Adding upstream version 125.0.1.upstream/125.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

27 files changed, 950 insertions, 988 deletions

diff --git a/browser/components/urlbar/tests/engagementTelemetry/browser/browser.toml b/browser/components/urlbar/tests/engagementTelemetry/browser/browser.toml
index 68a7881399..cf6bc80318 100644
--- a/browser/components/urlbar/tests/engagementTelemetry/browser/browser.toml
+++ b/browser/components/urlbar/tests/engagementTelemetry/browser/browser.toml
@@ -26,6 +26,8 @@ prefs = ["browser.bookmarks.testing.skipDefaultBookmarksImport=true"]
 
 ["browser_glean_telemetry_abandonment_n_chars_n_words.js"]
 
+["browser_glean_telemetry_abandonment_type.js"]
+
 ["browser_glean_telemetry_abandonment_sap.js"]
 
 ["browser_glean_telemetry_abandonment_search_engine_default_id.js"]
@@ -64,24 +66,4 @@ skip-if = ["verify"] # Bug 1852375 - MerinoTestUtils.initWeather() doesn't play
 
 ["browser_glean_telemetry_exposure_edge_cases.js"]
 
-["browser_glean_telemetry_impression_groups.js"]
-
-["browser_glean_telemetry_impression_interaction.js"]
-
-["browser_glean_telemetry_impression_interaction_persisted_search_terms_disabled.js"]
-
-["browser_glean_telemetry_impression_interaction_persisted_search_terms_enabled.js"]
-
-["browser_glean_telemetry_impression_n_chars_n_words.js"]
-
-["browser_glean_telemetry_impression_preferences.js"]
-
-["browser_glean_telemetry_impression_sap.js"]
-
-["browser_glean_telemetry_impression_search_engine_default_id.js"]
-
-["browser_glean_telemetry_impression_search_mode.js"]
-
-["browser_glean_telemetry_impression_timing.js"]
-
 ["browser_glean_telemetry_record_preferences.js"]
diff --git a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_abandonment_tips.js b/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_abandonment_tips.js
index 71087d03d0..ca21ca476c 100644
--- a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_abandonment_tips.js
+++ b/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_abandonment_tips.js
@@ -38,7 +38,7 @@ add_setup(async function () {
 });
 
 add_task(async function tip_persist() {
-  await doTest(async browser => {
+  await doTest(async () => {
     await showPersistSearchTip("test");
     gURLBar.focus();
     await UrlbarTestUtils.promisePopupClose(window, () => {
diff --git a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_abandonment_type.js b/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_abandonment_type.js
new file mode 100644
index 0000000000..99145d7cc3
--- /dev/null
+++ b/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_abandonment_type.js
@@ -0,0 +1,109 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test for the following data of abandonment telemetry.
+// - reason
+
+function checkUrlbarFocus(win, focusState) {
+  let urlbar = win.gURLBar;
+  is(
+    focusState ? win.document.activeElement : !win.document.activeElement,
+    focusState ? urlbar.inputField : !urlbar.inputField,
+    `URL Bar should ${focusState ? "" : "not "}be focused`
+  );
+}
+
+// Tests that a tab switch from a focused URL bar to another tab with a focused
+// URL bar records the correct abandonment telemetry with abandonment type
+// "tab_swtich".
+add_task(async function tabSwitchFocusedToFocused() {
+  await doTest(async browser => {
+    await UrlbarTestUtils.promiseAutocompleteResultPopup({
+      window,
+      value: "test search",
+    });
+    checkUrlbarFocus(window, true);
+
+    let promiseTabOpened = BrowserTestUtils.waitForEvent(
+      gBrowser.tabContainer,
+      "TabOpen"
+    );
+    EventUtils.synthesizeMouseAtCenter(gBrowser.tabContainer.newTabButton, {});
+    let openEvent = await promiseTabOpened;
+    let tab2 = openEvent.target;
+    checkUrlbarFocus(window, true);
+
+    await assertAbandonmentTelemetry([{ abandonment_type: "tab_switch" }]);
+
+    await BrowserTestUtils.removeTab(tab2);
+  });
+});
+
+// Verifies that switching from a tab with a focused URL bar to a tab where the
+// URL bar loses focus logs abandonment telemetry with abandonment type
+// "blur".
+add_task(async function tabSwitchFocusedToUnfocused() {
+  await doTest(async browser => {
+    await UrlbarTestUtils.promiseAutocompleteResultPopup({
+      window,
+      value: "test search",
+    });
+    checkUrlbarFocus(window, true);
+
+    let tab2 = await BrowserTestUtils.openNewForegroundTab(window.gBrowser);
+    checkUrlbarFocus(window, false);
+
+    await assertAbandonmentTelemetry([{ abandonment_type: "blur" }]);
+
+    await BrowserTestUtils.removeTab(tab2);
+  });
+});
+
+// Ensures that switching from a tab with an unfocused URL bar to a tab where
+// the URL bar gains focus does not record any abandonment telemetry, reflecting
+// no change in focus state relevant to abandonment.
+add_task(async function tabSwitchUnFocusedToFocused() {
+  await doTest(async browser => {
+    checkUrlbarFocus(window, false);
+
+    let promiseTabOpened = BrowserTestUtils.waitForEvent(
+      gBrowser.tabContainer,
+      "TabOpen"
+    );
+    EventUtils.synthesizeMouseAtCenter(gBrowser.tabContainer.newTabButton, {});
+    let openEvent = await promiseTabOpened;
+    let tab2 = openEvent.target;
+    checkUrlbarFocus(window, true);
+
+    const telemetries = Glean.urlbar.abandonment.testGetValue() ?? [];
+    Assert.equal(
+      telemetries.length,
+      0,
+      "Telemetry event length matches expected event length."
+    );
+
+    await BrowserTestUtils.removeTab(tab2);
+  });
+});
+
+// Checks that switching between two tabs, both with unfocused URL bars, does
+// not trigger any abandonment telmetry.
+add_task(async function tabSwitchUnFocusedToUnFocused() {
+  await doTest(async browser => {
+    checkUrlbarFocus(window, false);
+
+    let tab2 = await BrowserTestUtils.openNewForegroundTab(window.gBrowser);
+    checkUrlbarFocus(window, false);
+
+    const telemetries = Glean.urlbar.abandonment.testGetValue() ?? [];
+    Assert.equal(
+      telemetries.length,
+      0,
+      "Telemetry event length matches expected event length."
+    );
+
+    await BrowserTestUtils.removeTab(tab2);
+  });
+});
diff --git a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_engagement_edge_cases.js b/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_engagement_edge_cases.js
index fcac924879..04ef7e9757 100644
--- a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_engagement_edge_cases.js
+++ b/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_engagement_edge_cases.js
@@ -22,7 +22,7 @@ class NoResponseTestProvider extends UrlbarTestUtils.TestProvider {
     return UrlbarUtils.PROVIDER_TYPE.HEURISTIC;
   }
 
-  async startQuery(context, addCallback) {
+  async startQuery(_context, _addCallback) {
     await this.#deferred.promise;
   }
 
@@ -98,7 +98,7 @@ add_task(async function engagement_before_showing_results() {
   };
   registerCleanupFunction(cleanup);
 
-  await doTest(async browser => {
+  await doTest(async () => {
     // Try to show the results.
     await UrlbarTestUtils.inputIntoURLBar(window, "exam");
 
@@ -156,7 +156,7 @@ add_task(async function engagement_after_closing_results() {
   ];
 
   for (const trigger of TRIGGERS) {
-    await doTest(async browser => {
+    await doTest(async () => {
       await openPopup("test");
       await UrlbarTestUtils.promisePopupClose(window, () => {
         trigger();
@@ -186,7 +186,7 @@ add_task(async function engagement_after_closing_results() {
 });
 
 add_task(async function enter_to_reload_current_url() {
-  await doTest(async browser => {
+  await doTest(async () => {
     // Open a URL once.
     await openPopup("https://example.com");
     await doEnter();
diff --git a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_engagement_groups.js b/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_engagement_groups.js
index 8779487960..d46c874403 100644
--- a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_engagement_groups.js
+++ b/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_engagement_groups.js
@@ -247,13 +247,13 @@ add_task(async function always_empty_if_drop_go() {
     },
   ];
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await doDropAndGo("example.com");
 
     assertEngagementTelemetry(expected);
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     // Open the results view once.
     await showResultByArrowDown();
     await UrlbarTestUtils.promisePopupClose(window);
@@ -274,13 +274,13 @@ add_task(async function always_empty_if_paste_go() {
     },
   ];
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await doPasteAndGo("example.com");
 
     assertEngagementTelemetry(expected);
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     // Open the results view once.
     await showResultByArrowDown();
     await UrlbarTestUtils.promisePopupClose(window);
diff --git a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_engagement_interaction.js b/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_engagement_interaction.js
index f4880d2205..2866186c30 100644
--- a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_engagement_interaction.js
+++ b/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_engagement_interaction.js
@@ -35,13 +35,13 @@ add_task(async function typed() {
 });
 
 add_task(async function dropped() {
-  await doTest(async browser => {
+  await doTest(async () => {
     await doDropAndGo("example.com");
 
     assertEngagementTelemetry([{ interaction: "dropped" }]);
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await showResultByArrowDown();
     await doDropAndGo("example.com");
 
@@ -60,13 +60,13 @@ add_task(async function pasted() {
     assert: () => assertEngagementTelemetry([{ interaction: "pasted" }]),
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await doPasteAndGo("www.example.com");
 
     assertEngagementTelemetry([{ interaction: "pasted" }]);
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await showResultByArrowDown();
     await doPasteAndGo("www.example.com");
 
diff --git a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_engagement_selected_result.js b/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_engagement_selected_result.js
index 6a3422d939..bea266dbf4 100644
--- a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_engagement_selected_result.js
+++ b/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_engagement_selected_result.js
@@ -13,6 +13,7 @@
 ChromeUtils.defineESModuleGetters(this, {
   UrlbarProviderClipboard:
     "resource:///modules/UrlbarProviderClipboard.sys.mjs",
+  SearchUtils: "resource://gre/modules/SearchUtils.sys.mjs",
 });
 
 // This test has many subtests and can time out in verify mode.
@@ -23,7 +24,7 @@ add_setup(async function () {
 });
 
 add_task(async function selected_result_autofill_about() {
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("about:about");
     await doEnter();
 
@@ -44,7 +45,7 @@ add_task(async function selected_result_autofill_adaptive() {
     set: [["browser.urlbar.autoFill.adaptiveHistory.enabled", true]],
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await PlacesTestUtils.addVisits("https://example.com/test");
     await UrlbarUtils.addToInputHistory("https://example.com/test", "exa");
     await openPopup("exa");
@@ -65,7 +66,7 @@ add_task(async function selected_result_autofill_adaptive() {
 });
 
 add_task(async function selected_result_autofill_origin() {
-  await doTest(async browser => {
+  await doTest(async () => {
     await PlacesTestUtils.addVisits("https://example.com/test");
     await PlacesFrecencyRecalculator.recalculateAnyOutdatedFrecencies();
     await openPopup("exa");
@@ -84,7 +85,7 @@ add_task(async function selected_result_autofill_origin() {
 });
 
 add_task(async function selected_result_autofill_url() {
-  await doTest(async browser => {
+  await doTest(async () => {
     await PlacesTestUtils.addVisits("https://example.com/test");
     await PlacesFrecencyRecalculator.recalculateAnyOutdatedFrecencies();
     await openPopup("https://example.com/test");
@@ -103,7 +104,7 @@ add_task(async function selected_result_autofill_url() {
 });
 
 add_task(async function selected_result_bookmark() {
-  await doTest(async browser => {
+  await doTest(async () => {
     await PlacesUtils.bookmarks.insert({
       parentGuid: PlacesUtils.bookmarks.unfiledGuid,
       url: "https://example.com/bookmark",
@@ -131,7 +132,7 @@ add_task(async function selected_result_history() {
     set: [["browser.urlbar.autoFill", false]],
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await PlacesTestUtils.addVisits("https://example.com/test");
 
     await openPopup("example");
@@ -153,7 +154,7 @@ add_task(async function selected_result_history() {
 });
 
 add_task(async function selected_result_keyword() {
-  await doTest(async browser => {
+  await doTest(async () => {
     await PlacesUtils.keywords.insert({
       keyword: "keyword",
       url: "https://example.com/?q=%s",
@@ -177,7 +178,7 @@ add_task(async function selected_result_keyword() {
 });
 
 add_task(async function selected_result_search_engine() {
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("x");
     await doEnter();
 
@@ -201,7 +202,7 @@ add_task(async function selected_result_search_suggest() {
     ],
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("foo");
     await selectRowByURL("http://mochi.test:8888/?terms=foofoo");
     await doEnter();
@@ -228,7 +229,7 @@ add_task(async function selected_result_search_history() {
     ],
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await UrlbarTestUtils.formHistory.add(["foofoo", "foobar"]);
 
     await openPopup("foo");
@@ -250,7 +251,7 @@ add_task(async function selected_result_search_history() {
 });
 
 add_task(async function selected_result_url() {
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("https://example.com/");
     await doEnter();
 
@@ -267,7 +268,7 @@ add_task(async function selected_result_url() {
 });
 
 add_task(async function selected_result_action() {
-  await doTest(async browser => {
+  await doTest(async () => {
     await showResultByArrowDown();
     await selectRowByProvider("quickactions");
     const onLoad = BrowserTestUtils.browserLoaded(gBrowser.selectedBrowser);
@@ -289,7 +290,7 @@ add_task(async function selected_result_action() {
 add_task(async function selected_result_tab() {
   const tab = BrowserTestUtils.addTab(gBrowser, "https://example.com/");
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("example");
     await selectRowByProvider("Places");
     EventUtils.synthesizeKey("KEY_Enter");
@@ -312,7 +313,7 @@ add_task(async function selected_result_tab() {
 add_task(async function selected_result_remote_tab() {
   const remoteTab = await loadRemoteTab("https://example.com");
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("example");
     await selectRowByProvider("RemoteTabs");
     await doEnter();
@@ -335,7 +336,7 @@ add_task(async function selected_result_addon() {
   const addon = loadOmniboxAddon({ keyword: "omni" });
   await addon.startup();
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("omni test");
     await doEnter();
 
@@ -363,7 +364,7 @@ add_task(async function selected_result_tab_to_search() {
     search_url: "https://mozengine/",
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     for (let i = 0; i < 3; i++) {
       await PlacesTestUtils.addVisits(["https://mozengine/"]);
     }
@@ -389,7 +390,7 @@ add_task(async function selected_result_tab_to_search() {
 });
 
 add_task(async function selected_result_top_site() {
-  await doTest(async browser => {
+  await doTest(async () => {
     await addTopSites("https://example.com/");
     await showResultByArrowDown();
     await selectRowByURL("https://example.com/");
@@ -412,7 +413,7 @@ add_task(async function selected_result_calc() {
     set: [["browser.urlbar.suggest.calculator", true]],
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("8*8");
     await selectRowByProvider("calculator");
     await SimpleTest.promiseClipboardChange("64", () => {
@@ -444,7 +445,7 @@ add_task(async function selected_result_clipboard() {
     "https://example.com/selected_result_clipboard"
   );
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("");
     await selectRowByProvider("UrlbarProviderClipboard");
     await doEnter();
@@ -470,7 +471,7 @@ add_task(async function selected_result_unit() {
     set: [["browser.urlbar.unitConversion.enabled", true]],
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("1m to cm");
     await selectRowByProvider("UnitConversion");
     await SimpleTest.promiseClipboardChange("100 cm", () => {
@@ -496,7 +497,7 @@ add_task(async function selected_result_site_specific_contextual_search() {
     set: [["browser.urlbar.contextualSearch.enabled", true]],
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     const extension = await SearchTestUtils.installSearchExtension(
       {
         name: "Contextual",
@@ -540,7 +541,7 @@ add_task(async function selected_result_rs_adm_sponsored() {
     prefs: [["quicksuggest.rustEnabled", false]],
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("sponsored");
     await selectRowByURL("https://example.com/sponsored");
     await doEnter();
@@ -564,7 +565,7 @@ add_task(async function selected_result_rs_adm_nonsponsored() {
     prefs: [["quicksuggest.rustEnabled", false]],
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("nonsponsored");
     await selectRowByURL("https://example.com/nonsponsored");
     await doEnter();
@@ -594,13 +595,13 @@ add_task(async function selected_result_input_field() {
     },
   ];
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await doDropAndGo("example.com");
 
     assertEngagementTelemetry(expected);
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await doPasteAndGo("example.com");
 
     assertEngagementTelemetry(expected);
@@ -618,7 +619,7 @@ add_task(async function selected_result_weather() {
   let provider = UrlbarPrefs.get("quickSuggestRustEnabled")
     ? "UrlbarProviderQuickSuggest"
     : "Weather";
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup(MerinoTestUtils.WEATHER_KEYWORD);
     await selectRowByProvider(provider);
     await doEnter();
@@ -653,7 +654,7 @@ add_task(async function selected_result_navigational() {
     ],
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("only match the Merino suggestion");
     await selectRowByProvider("UrlbarProviderQuickSuggest");
     await doEnter();
@@ -688,7 +689,7 @@ add_task(async function selected_result_dynamic_wikipedia() {
     ],
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("only match the Merino suggestion");
     await selectRowByProvider("UrlbarProviderQuickSuggest");
     await doEnter();
@@ -708,7 +709,7 @@ add_task(async function selected_result_dynamic_wikipedia() {
 });
 
 add_task(async function selected_result_search_shortcut_button() {
-  await doTest(async browser => {
+  await doTest(async () => {
     const oneOffSearchButtons = UrlbarTestUtils.getOneOffSearchButtons(window);
     await openPopup("x");
     Assert.ok(!oneOffSearchButtons.selectedButton);
@@ -756,31 +757,78 @@ add_task(async function selected_result_trending() {
   });
 
   let defaultEngine = await Services.search.getDefault();
-  let extension = await SearchTestUtils.installSearchExtension(
-    {
-      name: "mozengine",
-      search_url: "https://example.org/",
-    },
-    { setAsDefault: true, skipUnload: true }
-  );
+  let extension;
+  if (!SearchUtils.newSearchConfigEnabled) {
+    extension = await SearchTestUtils.installSearchExtension(
+      {
+        name: "mozengine",
+        search_url: "https://example.org/",
+      },
+      { setAsDefault: true, skipUnload: true }
+    );
+  }
 
   SearchTestUtils.useMockIdleService();
-  await SearchTestUtils.updateRemoteSettingsConfig([
-    {
-      webExtension: { id: "mozengine@tests.mozilla.org" },
-      urls: {
-        trending: {
-          fullPath:
-            "https://example.com/browser/browser/components/search/test/browser/trendingSuggestionEngine.sjs",
-          query: "",
-        },
-      },
-      appliesTo: [{ included: { everywhere: true } }],
-      default: "yes",
-    },
-  ]);
+  await SearchTestUtils.updateRemoteSettingsConfig(
+    SearchUtils.newSearchConfigEnabled
+      ? [
+          {
+            recordType: "engine",
+            identifier: "mozengine",
+            base: {
+              name: "mozengine",
+              urls: {
+                search: {
+                  base: "https://example.org/",
+                  searchTermParamName: "q",
+                },
+                trending: {
+                  base: "https://example.com/browser/browser/components/search/test/browser/trendingSuggestionEngine.sjs",
+                  method: "GET",
+                },
+              },
+            },
+            variants: [
+              {
+                environment: { allRegionsAndLocales: true },
+              },
+            ],
+          },
+          {
+            recordType: "defaultEngines",
+            globalDefault: "mozengine",
+            specificDefaults: [],
+          },
+          {
+            recordType: "engineOrders",
+            orders: [],
+          },
+        ]
+      : [
+          {
+            webExtension: { id: "mozengine@tests.mozilla.org" },
+            urls: {
+              trending: {
+                fullPath:
+                  "https://example.com/browser/browser/components/search/test/browser/trendingSuggestionEngine.sjs",
+                query: "",
+              },
+            },
+            appliesTo: [{ included: { everywhere: true } }],
+            default: "yes",
+          },
+        ]
+  );
 
-  await doTest(async browser => {
+  if (SearchUtils.newSearchConfigEnabled) {
+    let engine = Services.search.getEngineByName("mozengine");
+    await Services.search.setDefault(
+      engine,
+      Ci.nsISearchService.CHANGE_REASON_UNKNOWN
+    );
+  }
+
+  await doTest(async () => {
     await openPopup("");
     await selectRowByProvider("SearchSuggestions");
     await doEnter();
@@ -796,7 +844,13 @@ add_task(async function selected_result_trending() {
     ]);
   });
 
-  await extension.unload();
+  if (SearchUtils.newSearchConfigEnabled) {
+    let engine = Services.search.getEngineByName("mozengine");
+    await Services.search.removeEngine(engine);
+  } else {
+    await extension.unload();
+  }
+
   await Services.search.setDefault(
     defaultEngine,
     Ci.nsISearchService.CHANGE_REASON_UNKNOWN
@@ -823,31 +877,84 @@ add_task(async function selected_result_trending_rich() {
   });
 
   let defaultEngine = await Services.search.getDefault();
-  let extension = await SearchTestUtils.installSearchExtension(
-    {
-      name: "mozengine",
-      search_url: "https://example.org/",
-    },
-    { setAsDefault: true, skipUnload: true }
-  );
+  let extension;
+  if (!SearchUtils.newSearchConfigEnabled) {
+    extension = await SearchTestUtils.installSearchExtension(
+      {
+        name: "mozengine",
+        search_url: "https://example.org/",
+      },
+      { setAsDefault: true, skipUnload: true }
+    );
+  }
 
   SearchTestUtils.useMockIdleService();
-  await SearchTestUtils.updateRemoteSettingsConfig([
-    {
-      webExtension: { id: "mozengine@tests.mozilla.org" },
-      urls: {
-        trending: {
-          fullPath:
-            "https://example.com/browser/browser/components/search/test/browser/trendingSuggestionEngine.sjs?richsuggestions=true",
-          query: "",
-        },
-      },
-      appliesTo: [{ included: { everywhere: true } }],
-      default: "yes",
-    },
-  ]);
+  await SearchTestUtils.updateRemoteSettingsConfig(
+    SearchUtils.newSearchConfigEnabled
+      ? [
+          {
+            recordType: "engine",
+            identifier: "mozengine",
+            base: {
+              name: "mozengine",
+              urls: {
+                search: {
+                  base: "https://example.org/",
+                  searchTermParamName: "q",
+                },
+                trending: {
+                  base: "https://example.com/browser/browser/components/search/test/browser/trendingSuggestionEngine.sjs",
+                  method: "GET",
+                  params: [
+                    {
+                      name: "richsuggestions",
+                      value: "true",
+                    },
+                  ],
+                },
+              },
+            },
+            variants: [
+              {
+                environment: { allRegionsAndLocales: true },
+              },
+            ],
+          },
+          {
+            recordType: "defaultEngines",
+            globalDefault: "mozengine",
+            specificDefaults: [],
+          },
+          {
+            recordType: "engineOrders",
+            orders: [],
+          },
+        ]
+      : [
+          {
+            webExtension: { id: "mozengine@tests.mozilla.org" },
+            urls: {
+              trending: {
+                fullPath:
+                  "https://example.com/browser/browser/components/search/test/browser/trendingSuggestionEngine.sjs?richsuggestions=true",
+                query: "",
+              },
+            },
+            appliesTo: [{ included: { everywhere: true } }],
+            default: "yes",
+          },
+        ]
+  );
 
-  await doTest(async browser => {
+  if (SearchUtils.newSearchConfigEnabled) {
+    let engine = Services.search.getEngineByName("mozengine");
+    await Services.search.setDefault(
+      engine,
+      Ci.nsISearchService.CHANGE_REASON_UNKNOWN
+    );
+  }
+
+  await doTest(async () => {
     await openPopup("");
     await selectRowByProvider("SearchSuggestions");
     await doEnter();
@@ -863,7 +970,13 @@ add_task(async function selected_result_trending_rich() {
     ]);
   });
 
-  await extension.unload();
+  if (SearchUtils.newSearchConfigEnabled) {
+    let engine = Services.search.getEngineByName("mozengine");
+    await Services.search.removeEngine(engine);
+  } else {
+    await extension.unload();
+  }
+
   await Services.search.setDefault(
     defaultEngine,
     Ci.nsISearchService.CHANGE_REASON_UNKNOWN
@@ -905,7 +1018,7 @@ add_task(async function selected_result_addons() {
     ],
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("only match the Merino suggestion");
     await selectRowByProvider("UrlbarProviderQuickSuggest");
     await doEnter();
@@ -930,7 +1043,7 @@ add_task(async function selected_result_rust_adm_sponsored() {
     prefs: [["quicksuggest.rustEnabled", true]],
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("sponsored");
     await selectRowByURL("https://example.com/sponsored");
     await doEnter();
@@ -954,7 +1067,7 @@ add_task(async function selected_result_rust_adm_nonsponsored() {
     prefs: [["quicksuggest.rustEnabled", true]],
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("nonsponsored");
     await selectRowByURL("https://example.com/nonsponsored");
     await doEnter();
diff --git a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_engagement_tips.js b/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_engagement_tips.js
index 2b38631747..ff31bdc52a 100644
--- a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_engagement_tips.js
+++ b/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_engagement_tips.js
@@ -69,7 +69,7 @@ add_task(async function selected_result_tip() {
     });
     UrlbarProvidersManager.registerProvider(provider);
 
-    await doTest(async browser => {
+    await doTest(async () => {
       await openPopup("example");
       await selectRowByType(type);
       EventUtils.synthesizeKey("VK_RETURN");
@@ -159,7 +159,7 @@ add_task(async function selected_result_intervention_update() {
 });
 
 async function doInterventionTest(keyword, type, dialog, expectedTelemetry) {
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup(keyword);
     await selectRowByType(type);
     const onDialog = BrowserTestUtils.promiseAlertDialog("cancel", dialog, {
diff --git a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_engagement_type.js b/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_engagement_type.js
index 5972dd331d..6b1dedbce2 100644
--- a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_engagement_type.js
+++ b/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_engagement_type.js
@@ -14,7 +14,7 @@ add_setup(async function () {
 });
 
 add_task(async function engagement_type_click() {
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("x");
     await doClick();
 
@@ -23,7 +23,7 @@ add_task(async function engagement_type_click() {
 });
 
 add_task(async function engagement_type_enter() {
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("x");
     await doEnter();
 
@@ -32,7 +32,7 @@ add_task(async function engagement_type_enter() {
 });
 
 add_task(async function engagement_type_go_button() {
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("x");
     EventUtils.synthesizeMouseAtCenter(gURLBar.goButton, {});
 
@@ -41,7 +41,7 @@ add_task(async function engagement_type_go_button() {
 });
 
 add_task(async function engagement_type_drop_go() {
-  await doTest(async browser => {
+  await doTest(async () => {
     await doDropAndGo("example.com");
 
     assertEngagementTelemetry([{ engagement_type: "drop_go" }]);
@@ -49,7 +49,7 @@ add_task(async function engagement_type_drop_go() {
 });
 
 add_task(async function engagement_type_paste_go() {
-  await doTest(async browser => {
+  await doTest(async () => {
     await doPasteAndGo("www.example.com");
 
     assertEngagementTelemetry([{ engagement_type: "paste_go" }]);
@@ -59,7 +59,7 @@ add_task(async function engagement_type_paste_go() {
 add_task(async function engagement_type_dismiss() {
   const cleanupQuickSuggest = await ensureQuickSuggestInit();
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("sponsored");
 
     const originalResultCount = UrlbarTestUtils.getResultCount(window);
@@ -84,7 +84,7 @@ add_task(async function engagement_type_dismiss() {
     ]);
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("sponsored");
 
     const originalResultCount = UrlbarTestUtils.getResultCount(window);
@@ -103,7 +103,7 @@ add_task(async function engagement_type_dismiss() {
 add_task(async function engagement_type_help() {
   const cleanupQuickSuggest = await ensureQuickSuggestInit();
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("sponsored");
     await selectRowByURL("https://example.com/sponsored");
     const onTabOpened = BrowserTestUtils.waitForNewTab(gBrowser);
diff --git a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_exposure_edge_cases.js b/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_exposure_edge_cases.js
index d28352b417..725240c9b1 100644
--- a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_exposure_edge_cases.js
+++ b/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_exposure_edge_cases.js
@@ -38,8 +38,12 @@ add_setup(async function () {
   gProvider = new TestProvider();
   UrlbarProvidersManager.registerProvider(gProvider);
 
-  // Increase the timeout of the stale-rows timer so it doesn't interfere with
-  // this test, which specifically tests what happens before the timer fires.
+  // This test specifically checks the view's behavior before and after it
+  // removes stale rows, so it needs to control when that occurs. There are two
+  // times the view removes stale rows: (1) when the stale-rows timer fires, (2)
+  // when a query finishes. We prevent (1) from occuring by increasing the
+  // timer's timeout so it never fires during the test. We'll rely on (2) to
+  // trigger stale rows removal.
   let originalRemoveStaleRowsTimeout = UrlbarView.removeStaleRowsTimeout;
   UrlbarView.removeStaleRowsTimeout = 30000;
 
@@ -49,11 +53,17 @@ add_setup(async function () {
   });
 });
 
-// Does one query that fills up the view with search suggestions, starts a
-// second query that returns a history result, and cancels it before it can
-// finish but after the view is updated. Regardless of `showExposureResults`,
-// the history result should not trigger an exposure since it never had a chance
-// to be visible in the view.
+// Does the following:
+//
+// 1. Starts and finishes a query that fills up the view
+// 2. Starts a second query with results that cannot replace rows from the first
+//    query and that therefore must be appended and hidden
+// 3. Cancels the second query before it finishes (so that stale rows are not
+//    removed)
+//
+// Results in the second query should not trigger an exposure. They can never be
+// visible in the view since the second query is canceled before stale rows are
+// removed.
 add_task(async function noExposure() {
   for (let showExposureResults of [true, false]) {
     await do_noExposure(showExposureResults);
@@ -116,7 +126,7 @@ async function do_noExposure(showExposureResults) {
   // When the provider's `startQuery()` is called, let it add its results but
   // don't let it return. That will cause the view to be updated with the new
   // results but prevent it from showing hidden rows since the query won't
-  // finish.
+  // finish (so stale rows won't be removed).
   let queryResolver = Promise.withResolvers();
   gProvider.finishQueryPromise = queryResolver.promise;
 
@@ -147,14 +157,24 @@ async function do_noExposure(showExposureResults) {
 
   // Make sure the view is full of visible rows as expected, plus the one or two
   // hidden rows for the history and/or bookmark results.
-  let rows = UrlbarTestUtils.getResultsContainer(window);
-  let expectedCount = MAX_RESULT_COUNT + 1;
+  let expected = [
+    {
+      source: UrlbarUtils.RESULT_SOURCE.BOOKMARKS,
+      type: UrlbarUtils.RESULT_TYPE.URL,
+      url: bookmarkUrl,
+    },
+  ];
   if (showExposureResults) {
-    expectedCount++;
+    expected.unshift({
+      source: UrlbarUtils.RESULT_SOURCE.HISTORY,
+      type: UrlbarUtils.RESULT_TYPE.URL,
+      url: historyUrl,
+    });
   }
+  let rows = UrlbarTestUtils.getResultsContainer(window);
   Assert.equal(
     rows.children.length,
-    expectedCount,
+    MAX_RESULT_COUNT + expected.length,
     "The view has the expected number of rows"
   );
 
@@ -176,24 +196,15 @@ async function do_noExposure(showExposureResults) {
   }
 
   // Check the hidden history and/or bookmark rows.
-  let expected = [
-    { source: UrlbarUtils.RESULT_SOURCE.BOOKMARKS, url: bookmarkUrl },
-  ];
-  if (showExposureResults) {
-    expected.unshift({
-      source: UrlbarUtils.RESULT_SOURCE.HISTORY,
-      url: historyUrl,
-    });
-  }
   for (let i = 0; i < expected.length; i++) {
-    let { source, url } = expected[i];
+    let { source, type, url } = expected[i];
     let row = rows.children[MAX_RESULT_COUNT + i];
     Assert.ok(row, `rows[${i}] should exist`);
     Assert.ok(BrowserTestUtils.isHidden(row), `rows[${i}] should be hidden`);
     Assert.equal(
       row.result.type,
-      UrlbarUtils.RESULT_TYPE.URL,
-      `rows[${i}].result.type should be URL`
+      type,
+      `rows[${i}].result.type should be as expected`
     );
     Assert.equal(
       row.result.source,
@@ -212,8 +223,8 @@ async function do_noExposure(showExposureResults) {
   await UrlbarTestUtils.promisePopupClose(window);
   gURLBar.blur();
 
-  // No exposure should have been recorded since the history result was never
-  // visible.
+  // No exposure should have been recorded since the history result could never
+  // be visible.
   assertExposureTelemetry([]);
 
   // Clean up.
@@ -221,17 +232,24 @@ async function do_noExposure(showExposureResults) {
   await queryPromise;
   await SpecialPowers.popPrefEnv();
   Services.fog.testResetFOG();
+  gProvider.finishQueryPromise = null;
 }
 
-// Does one query that underfills the view and then a second query that returns
-// a search suggestion. The search suggestion should be appended and trigger an
-// exposure. When `showExposureResults` is true, it should also be shown. After
-// the view is updated, it shouldn't matter whether or not the second query is
-// canceled.
-add_task(async function exposure_append() {
+// Does the following:
+//
+// 1. Starts and finishes a query that underfills the view
+// 2. Starts a second query
+// 3. Waits for rows from the second query to be appended. They will be
+//    immediately visible since the first query underfilled the view.
+// 4. Either cancels the second query (so stale rows are not removed) or waits
+//    for it to finish (so stale rows are removed)
+//
+// Results in the second query should trigger an exposure since they are made
+// visible in step 3. Step 4 should not actually matter.
+add_task(async function exposure_append_underfilled() {
   for (let showExposureResults of [true, false]) {
     for (let cancelSecondQuery of [true, false]) {
-      await do_exposure_append({
+      await do_exposure_append_underfilled({
         showExposureResults,
         cancelSecondQuery,
       });
@@ -239,7 +257,10 @@ add_task(async function exposure_append() {
   }
 });
 
-async function do_exposure_append({ showExposureResults, cancelSecondQuery }) {
+async function do_exposure_append_underfilled({
+  showExposureResults,
+  cancelSecondQuery,
+}) {
   info(
     "Starting do_exposure_append: " +
       JSON.stringify({ showExposureResults, cancelSecondQuery })
@@ -287,7 +308,8 @@ async function do_exposure_append({ showExposureResults, cancelSecondQuery }) {
 
   // When the provider's `startQuery()` is called, let it add its results but
   // don't let it return. That will cause the view to be updated with the new
-  // results but let us test the specific case where the query doesn't finish.
+  // results but let us test the specific case where the query doesn't finish
+  // (so stale rows are not removed).
   let queryResolver = Promise.withResolvers();
   gProvider.finishQueryPromise = queryResolver.promise;
 
@@ -357,13 +379,19 @@ async function do_exposure_append({ showExposureResults, cancelSecondQuery }) {
   await queryPromise;
   await SpecialPowers.popPrefEnv();
   Services.fog.testResetFOG();
+  gProvider.finishQueryPromise = null;
 }
 
-// Does one query that returns a search suggestion and then a second query that
-// returns a new search suggestion. The new search suggestion can replace the
-// old one, so it should trigger an exposure. When `showExposureResults` is
-// true, it should actually replace it. After the view is updated, it shouldn't
-// matter whether or not the second query is canceled.
+// Does the following:
+//
+// 1. Starts and finishes a query
+// 2. Starts a second query with a result that can replace an existing row from
+//    the previous query
+// 3. Either cancels the second query (so stale rows are not removed) or waits
+//    for it to finish (so stale rows are removed)
+//
+// The result in the second query should trigger an exposure since it's made
+// visible in step 2. Step 3 should not actually matter.
 add_task(async function exposure_replace() {
   for (let showExposureResults of [true, false]) {
     for (let cancelSecondQuery of [true, false]) {
@@ -433,7 +461,8 @@ async function do_exposure_replace({ showExposureResults, cancelSecondQuery }) {
 
   // When the provider's `startQuery()` is called, let it add its results but
   // don't let it return. That will cause the view to be updated with the new
-  // results but let us test the specific case where the query doesn't finish.
+  // results but let us test the specific case where the query doesn't finish
+  // (so stale rows are not removed).
   let queryResolver = Promise.withResolvers();
   gProvider.finishQueryPromise = queryResolver.promise;
 
@@ -503,6 +532,519 @@ async function do_exposure_replace({ showExposureResults, cancelSecondQuery }) {
   await queryPromise;
   await SpecialPowers.popPrefEnv();
   Services.fog.testResetFOG();
+  gProvider.finishQueryPromise = null;
+}
+
+// Does the following:
+//
+// 1. Starts and finishes a query that fills up the view
+// 2. Starts a second query with a result that cannot replace any rows from the
+//    first query and that therefore must be appended and hidden
+// 3. Finishes the second query
+//
+// The result in the second query should trigger an exposure since it's made
+// visible in step 3.
+add_task(async function exposure_append_full() {
+  for (let showExposureResults of [true, false]) {
+    await do_exposure_append_full(showExposureResults);
+  }
+});
+
+async function do_exposure_append_full(showExposureResults) {
+  info(
+    "Starting do_exposure_append_full: " +
+      JSON.stringify({ showExposureResults })
+  );
+
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["browser.urlbar.exposureResults", "history"],
+      ["browser.urlbar.showExposureResults", showExposureResults],
+    ],
+  });
+
+  // Make the provider return enough search suggestions to fill the view.
+  gProvider.results = [];
+  for (let i = 0; i < MAX_RESULT_COUNT; i++) {
+    gProvider.results.push(
+      new UrlbarResult(
+        UrlbarUtils.RESULT_TYPE.SEARCH,
+        UrlbarUtils.RESULT_SOURCE.SEARCH,
+        {
+          suggestion: "suggestion " + i,
+          engine: Services.search.defaultEngine.name,
+        }
+      )
+    );
+  }
+
+  // Do the first query to fill the view with search suggestions.
+  info("Doing first query");
+  await UrlbarTestUtils.promiseAutocompleteResultPopup({
+    window,
+    value: "test 1",
+  });
+
+  // Now make the provider return a history result and bookmark. If
+  // `showExposureResults` is true, the history result will be added to the view
+  // but it should be hidden since the view is already full. If it's false, it
+  // shouldn't be added at all. The bookmark will always be added, which will
+  // tell us when the view has been updated either way. (It also will be hidden
+  // since the view is already full.)
+  let historyUrl = "https://example.com/history";
+  let bookmarkUrl = "https://example.com/bookmark";
+  gProvider.results = [
+    new UrlbarResult(
+      UrlbarUtils.RESULT_TYPE.URL,
+      UrlbarUtils.RESULT_SOURCE.HISTORY,
+      { url: historyUrl }
+    ),
+    new UrlbarResult(
+      UrlbarUtils.RESULT_TYPE.URL,
+      UrlbarUtils.RESULT_SOURCE.BOOKMARKS,
+      { url: bookmarkUrl }
+    ),
+  ];
+
+  // When the provider's `startQuery()` is called, let it add its results but
+  // don't let it return. That will cause the view to be updated with the new
+  // results but prevent it from showing hidden rows since the query won't
+  // finish (so stale rows won't be removed).
+  let queryResolver = Promise.withResolvers();
+  gProvider.finishQueryPromise = queryResolver.promise;
+
+  // Observe when the view appends the bookmark row. This will tell us when the
+  // view has been updated with the provider's new results. The bookmark row
+  // will be hidden since the view is already full with search suggestions.
+  let lastRowPromise = promiseLastRowAppended(
+    row => row.result.payload.url == bookmarkUrl
+  );
+
+  // Now start the second query but don't await it.
+  info("Starting second query");
+  let queryPromise = UrlbarTestUtils.promiseAutocompleteResultPopup({
+    window,
+    value: "test 2",
+    reopenOnBlur: false,
+  });
+
+  // Wait for the view to be updated.
+  info("Waiting for last row");
+  let lastRow = await lastRowPromise;
+  info("Done waiting for last row");
+
+  Assert.ok(
+    BrowserTestUtils.isHidden(lastRow),
+    "The new bookmark row should be hidden since the view is full"
+  );
+
+  // Make sure the view is full of visible rows as expected, plus the one or two
+  // hidden rows for the history and bookmark results.
+  let expected = [
+    {
+      source: UrlbarUtils.RESULT_SOURCE.BOOKMARKS,
+      type: UrlbarUtils.RESULT_TYPE.URL,
+      url: bookmarkUrl,
+    },
+  ];
+  if (showExposureResults) {
+    expected.unshift({
+      source: UrlbarUtils.RESULT_SOURCE.HISTORY,
+      type: UrlbarUtils.RESULT_TYPE.URL,
+      url: historyUrl,
+    });
+  }
+  let rows = UrlbarTestUtils.getResultsContainer(window);
+  Assert.equal(
+    rows.children.length,
+    MAX_RESULT_COUNT + expected.length,
+    "The view has the expected number of rows"
+  );
+
+  // Check the visible rows.
+  for (let i = 0; i < MAX_RESULT_COUNT; i++) {
+    let row = rows.children[i];
+    Assert.ok(BrowserTestUtils.isVisible(row), `rows[${i}] should be visible`);
+    Assert.ok(
+      row.result.type == UrlbarUtils.RESULT_TYPE.SEARCH,
+      `rows[${i}].result.type should be SEARCH`
+    );
+    // The heuristic won't have a suggestion so skip it.
+    if (i > 0) {
+      Assert.ok(
+        row.result.payload.suggestion,
+        `rows[${i}] should have a suggestion`
+      );
+    }
+  }
+
+  // Check the hidden history and bookmark rows.
+  for (let i = 0; i < expected.length; i++) {
+    let { source, type, url } = expected[i];
+    let row = rows.children[MAX_RESULT_COUNT + i];
+    Assert.ok(row, `rows[${i}] should exist`);
+    Assert.ok(BrowserTestUtils.isHidden(row), `rows[${i}] should be hidden`);
+    Assert.equal(
+      row.result.type,
+      type,
+      `rows[${i}].result.type should be as expected`
+    );
+    Assert.equal(
+      row.result.source,
+      source,
+      `rows[${i}].result.source should be as expected`
+    );
+    Assert.equal(
+      row.result.payload.url,
+      url,
+      `rows[${i}] URL should be as expected`
+    );
+  }
+
+  // Now let the query finish (so stale rows are removed).
+  queryResolver.resolve();
+  info("Waiting for second query to finish");
+  await queryPromise;
+  info("Second query finished");
+
+  rows = UrlbarTestUtils.getResultsContainer(window);
+  Assert.equal(
+    rows.children.length,
+    // + 1 for the heurustic.
+    1 + expected.length,
+    "The view has the expected number of rows"
+  );
+
+  // Check the visible rows (except the heuristic).
+  for (let i = 0; i < expected.length; i++) {
+    let { source, type, url } = expected[i];
+    let index = i + 1;
+    let row = rows.children[index];
+    Assert.ok(row, `rows[${index}] should exist`);
+    Assert.ok(
+      BrowserTestUtils.isVisible(row),
+      `rows[${index}] should be visible`
+    );
+    Assert.equal(
+      row.result.type,
+      type,
+      `rows[${index}].result.type should be as expected`
+    );
+    Assert.equal(
+      row.result.source,
+      source,
+      `rows[${index}].result.source should be as expected`
+    );
+    Assert.equal(
+      row.result.payload.url,
+      url,
+      `rows[${index}] URL should be as expected`
+    );
+  }
+
+  // Close the view. Blur the urlbar to end the session.
+  info("Closing view and blurring");
+  await UrlbarTestUtils.promisePopupClose(window);
+  gURLBar.blur();
+
+  // An exposure for the history result should have been recorded.
+  assertExposureTelemetry([{ results: "history" }]);
+
+  // Clean up.
+  await SpecialPowers.popPrefEnv();
+  Services.fog.testResetFOG();
+  gProvider.finishQueryPromise = null;
+}
+
+// Does the following:
+//
+// 1. Starts and finishes a query that fills up the view
+// 2. Starts a second query with results that cannot replace rows from the first
+//    query and that therefore must be appended and hidden
+// 3. Before the second query finishes (i.e., before stale rows are removed),
+//    starts and finishes a third query (after which stale rows are removed)
+//
+// Results in the third query should trigger an exposure since they become
+// visible when the query finishes (and stale rows are removed) in step 3.
+// Results in the second query should not trigger an exposure since they could
+// never be visible since the query is canceled before stale rows are removed.
+add_task(async function exposure_append_full_twice() {
+  for (let showExposureResults of [true, false]) {
+    await do_exposure_append_full_twice(showExposureResults);
+  }
+});
+
+async function do_exposure_append_full_twice(showExposureResults) {
+  info(
+    "Starting do_exposure_append_full_twice: " +
+      JSON.stringify({ showExposureResults })
+  );
+
+  // Exposure results are history and tab.
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["browser.urlbar.exposureResults", "history,tab"],
+      ["browser.urlbar.showExposureResults", showExposureResults],
+    ],
+  });
+
+  // Make the provider return enough search suggestions to fill the view.
+  gProvider.results = [];
+  for (let i = 0; i < MAX_RESULT_COUNT; i++) {
+    gProvider.results.push(
+      new UrlbarResult(
+        UrlbarUtils.RESULT_TYPE.SEARCH,
+        UrlbarUtils.RESULT_SOURCE.SEARCH,
+        {
+          suggestion: "suggestion " + i,
+          engine: Services.search.defaultEngine.name,
+        }
+      )
+    );
+  }
+
+  // Do the first query to fill the view with search suggestions.
+  info("Doing first query");
+  await UrlbarTestUtils.promiseAutocompleteResultPopup({
+    window,
+    value: "test 1",
+  });
+
+  // Now make the provider return a history result, tab, and bookmark. If
+  // `showExposureResults` is true, the history and tab results will be added to
+  // the view but they should be hidden since the view is already full. If it's
+  // false, they shouldn't be added at all. The bookmark will always be added,
+  // which will tell us when the view has been updated either way. (It also will
+  // be hidden since the view is already full.)
+  let historyUrl = "https://example.com/history";
+  let tabUrl = "https://example.com/tab";
+  let bookmarkUrl = "https://example.com/bookmark";
+  gProvider.results = [
+    new UrlbarResult(
+      UrlbarUtils.RESULT_TYPE.URL,
+      UrlbarUtils.RESULT_SOURCE.HISTORY,
+      { url: historyUrl }
+    ),
+    new UrlbarResult(
+      UrlbarUtils.RESULT_TYPE.TAB_SWITCH,
+      UrlbarUtils.RESULT_SOURCE.TABS,
+      { url: tabUrl }
+    ),
+    new UrlbarResult(
+      UrlbarUtils.RESULT_TYPE.URL,
+      UrlbarUtils.RESULT_SOURCE.BOOKMARKS,
+      { url: bookmarkUrl }
+    ),
+  ];
+
+  // When the provider's `startQuery()` is called, let it add its results but
+  // don't let it return. That will cause the view to be updated with the new
+  // results but prevent it from showing hidden rows since the query won't
+  // finish (so stale rows won't be removed).
+  let secondQueryResolver = Promise.withResolvers();
+  gProvider.finishQueryPromise = secondQueryResolver.promise;
+
+  // Observe when the view appends the bookmark row. This will tell us when the
+  // view has been updated with the provider's new results. The bookmark row
+  // will be hidden since the view is already full with search suggestions.
+  let lastRowPromise = promiseLastRowAppended(
+    row => row.result.payload.url == bookmarkUrl
+  );
+
+  // Now start the second query but don't await it.
+  info("Starting second query");
+  let secondQueryPromise = UrlbarTestUtils.promiseAutocompleteResultPopup({
+    window,
+    value: "test 2",
+    reopenOnBlur: false,
+  });
+
+  // Wait for the view to be updated.
+  info("Waiting for last row");
+  let lastRow = await lastRowPromise;
+  info("Done waiting for last row");
+
+  Assert.ok(
+    BrowserTestUtils.isHidden(lastRow),
+    "The new bookmark row should be hidden since the view is full"
+  );
+
+  // Make sure the view is full of visible rows as expected, plus the one or
+  // three hidden rows for the history, tab, and bookmark results.
+  let expected = [
+    {
+      source: UrlbarUtils.RESULT_SOURCE.BOOKMARKS,
+      type: UrlbarUtils.RESULT_TYPE.URL,
+      url: bookmarkUrl,
+    },
+  ];
+  if (showExposureResults) {
+    expected.unshift(
+      {
+        source: UrlbarUtils.RESULT_SOURCE.HISTORY,
+        type: UrlbarUtils.RESULT_TYPE.URL,
+        url: historyUrl,
+      },
+      {
+        source: UrlbarUtils.RESULT_SOURCE.TABS,
+        type: UrlbarUtils.RESULT_TYPE.TAB_SWITCH,
+        url: tabUrl,
+      }
+    );
+  }
+  let rows = UrlbarTestUtils.getResultsContainer(window);
+  Assert.equal(
+    rows.children.length,
+    MAX_RESULT_COUNT + expected.length,
+    "The view has the expected number of rows"
+  );
+
+  // Check the visible rows.
+  for (let i = 0; i < MAX_RESULT_COUNT; i++) {
+    let row = rows.children[i];
+    Assert.ok(BrowserTestUtils.isVisible(row), `rows[${i}] should be visible`);
+    Assert.ok(
+      row.result.type == UrlbarUtils.RESULT_TYPE.SEARCH,
+      `rows[${i}].result.type should be SEARCH`
+    );
+    // The heuristic won't have a suggestion so skip it.
+    if (i > 0) {
+      Assert.ok(
+        row.result.payload.suggestion,
+        `rows[${i}] should have a suggestion`
+      );
+    }
+  }
+
+  // Check the hidden history, tab, and bookmark rows.
+  for (let i = 0; i < expected.length; i++) {
+    let { source, type, url } = expected[i];
+    let row = rows.children[MAX_RESULT_COUNT + i];
+    Assert.ok(row, `rows[${i}] should exist`);
+    Assert.ok(BrowserTestUtils.isHidden(row), `rows[${i}] should be hidden`);
+    Assert.equal(
+      row.result.type,
+      type,
+      `rows[${i}].result.type should be as expected`
+    );
+    Assert.equal(
+      row.result.source,
+      source,
+      `rows[${i}].result.source should be as expected`
+    );
+    Assert.equal(
+      row.result.payload.url,
+      url,
+      `rows[${i}] URL should be as expected`
+    );
+  }
+
+  // Now make the provider return only a history result.
+  gProvider.results = [
+    new UrlbarResult(
+      UrlbarUtils.RESULT_TYPE.URL,
+      UrlbarUtils.RESULT_SOURCE.HISTORY,
+      { url: historyUrl }
+    ),
+  ];
+
+  // Without waiting for the second query to finish (i.e., before stale rows are
+  // removed), do a third query and allow it to finish (so stale rows are
+  // removed). An exposure should be recorded for the history result since it's
+  // present in the third query. An exposure should not be recorded for the tab
+  // result because it could not have been visible since the second query did
+  // not finish.
+
+  let thirdQueryStartedPromise = new Promise(resolve => {
+    let queryListener = {
+      onQueryStarted: () => {
+        gURLBar.controller.removeQueryListener(queryListener);
+        resolve();
+      },
+    };
+    gURLBar.controller.addQueryListener(queryListener);
+  });
+
+  info("Starting third query");
+  let thirdQueryPromise = UrlbarTestUtils.promiseAutocompleteResultPopup({
+    window,
+    value: "test 3",
+    reopenOnBlur: false,
+  });
+
+  // The test provider's `startQuery()` is still awaiting its
+  // `finishQueryPromise`, so we need to resolve it so the provider can respond
+  // to the third query. But before we do that, we need to make sure the third
+  // query has started and canceled the second query because otherwise the
+  // second query could finish and cause stale rows to be removed.
+  info("Waiting for third query to start");
+  await thirdQueryStartedPromise;
+  info("Resolving provider's finishQueryPromise");
+  secondQueryResolver.resolve();
+
+  // Now wait for the third query to finish.
+  info("Waiting for third query to finish");
+  await thirdQueryPromise;
+
+  expected = [];
+  if (showExposureResults) {
+    expected.unshift({
+      source: UrlbarUtils.RESULT_SOURCE.HISTORY,
+      type: UrlbarUtils.RESULT_TYPE.URL,
+      url: historyUrl,
+    });
+  }
+
+  rows = UrlbarTestUtils.getResultsContainer(window);
+  Assert.equal(
+    rows.children.length,
+    // + 1 for the heurustic.
+    1 + expected.length,
+    "The view has the expected number of rows"
+  );
+
+  // Check the history row.
+  for (let i = 0; i < expected.length; i++) {
+    let { source, type, url } = expected[i];
+    let index = i + 1;
+    let row = rows.children[index];
+    Assert.ok(row, `rows[${index}] should exist`);
+    Assert.ok(
+      BrowserTestUtils.isVisible(row),
+      `rows[${index}] should be visible`
+    );
+    Assert.equal(
+      row.result.type,
+      type,
+      `rows[${index}].result.type should be as expected`
+    );
+    Assert.equal(
+      row.result.source,
+      source,
+      `rows[${index}].result.source should be as expected`
+    );
+    Assert.equal(
+      row.result.payload.url,
+      url,
+      `rows[${index}] URL should be as expected`
+    );
+  }
+
+  // Close the view. Blur the urlbar to end the session.
+  info("Closing view and blurring");
+  await UrlbarTestUtils.promisePopupClose(window);
+  gURLBar.blur();
+
+  // An exposure only for the history result should have been recorded. If an
+  // exposure was also incorrectly recorded for the tab result, this will fail
+  // with "history,tab" instead of only "history".
+  assertExposureTelemetry([{ results: "history" }]);
+
+  // Clean up.
+  await secondQueryPromise;
+  await SpecialPowers.popPrefEnv();
+  Services.fog.testResetFOG();
+  gProvider.finishQueryPromise = null;
 }
 
 /**
@@ -523,7 +1065,7 @@ class TestProvider extends UrlbarTestUtils.TestProvider {
 function promiseLastRowAppended(predicate) {
   return new Promise(resolve => {
     let rows = UrlbarTestUtils.getResultsContainer(window);
-    let observer = new MutationObserver(mutations => {
+    let observer = new MutationObserver(() => {
       let lastRow = rows.children[rows.children.length - 1];
       info(
         "Observed mutation, lastRow.result is: " +
diff --git a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_groups.js b/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_groups.js
deleted file mode 100644
index 354876e512..0000000000
--- a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_groups.js
+++ /dev/null
@@ -1,258 +0,0 @@
-/* Any copyright is dedicated to the Public Domain.
- * http://creativecommons.org/publicdomain/zero/1.0/ */
-
-"use strict";
-
-// Test for the following data of impression telemetry.
-// - groups
-// - results
-// - n_results
-
-// This test has many subtests and can time out in verify mode.
-requestLongerTimeout(5);
-
-add_setup(async function () {
-  await initGroupTest();
-  // Increase the pausing time to ensure to ready for all suggestions.
-  await SpecialPowers.pushPrefEnv({
-    set: [
-      [
-        "browser.urlbar.searchEngagementTelemetry.pauseImpressionIntervalMs",
-        500,
-      ],
-    ],
-  });
-});
-
-add_task(async function heuristics() {
-  await doHeuristicsTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([
-        { reason: "pause", groups: "heuristic", results: "search_engine" },
-      ]),
-  });
-});
-
-add_task(async function adaptive_history() {
-  await doAdaptiveHistoryTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([
-        {
-          reason: "pause",
-          groups: "heuristic,adaptive_history",
-          results: "search_engine,history",
-          n_results: 2,
-        },
-      ]),
-  });
-});
-
-add_task(async function search_history() {
-  await doSearchHistoryTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([
-        {
-          reason: "pause",
-          groups: "heuristic,search_history,search_history",
-          results: "search_engine,search_history,search_history",
-          n_results: 3,
-        },
-      ]),
-  });
-});
-
-add_task(async function recent_search() {
-  await doRecentSearchTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([
-        {
-          reason: "pause",
-          groups: "recent_search,suggested_index",
-          results: "recent_search,action",
-          n_results: 2,
-        },
-      ]),
-  });
-});
-
-add_task(async function search_suggest() {
-  await doSearchSuggestTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([
-        {
-          reason: "pause",
-          groups: "heuristic,search_suggest,search_suggest",
-          results: "search_engine,search_suggest,search_suggest",
-          n_results: 3,
-        },
-      ]),
-  });
-
-  await doTailSearchSuggestTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([
-        {
-          reason: "pause",
-          groups: "heuristic,search_suggest",
-          results: "search_engine,search_suggest",
-          n_results: 2,
-        },
-      ]),
-  });
-});
-
-add_task(async function top_pick() {
-  await doTopPickTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([
-        {
-          reason: "pause",
-          groups: "heuristic,top_pick,search_suggest,search_suggest",
-          results:
-            "search_engine,merino_top_picks,search_suggest,search_suggest",
-          n_results: 4,
-        },
-      ]),
-  });
-});
-
-add_task(async function top_site() {
-  await doTopSiteTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([
-        {
-          reason: "pause",
-          groups: "top_site,suggested_index",
-          results: "top_site,action",
-          n_results: 2,
-        },
-      ]),
-  });
-});
-
-add_task(async function clipboard() {
-  await doClipboardTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([
-        {
-          reason: "pause",
-          groups: "general,suggested_index",
-          results: "clipboard,action",
-          n_results: 2,
-        },
-      ]),
-  });
-});
-
-add_task(async function remote_tab() {
-  await doRemoteTabTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([
-        {
-          reason: "pause",
-          groups: "heuristic,remote_tab",
-          results: "search_engine,remote_tab",
-          n_results: 2,
-        },
-      ]),
-  });
-});
-
-add_task(async function addon() {
-  await doAddonTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([
-        {
-          reason: "pause",
-          groups: "addon",
-          results: "addon",
-          n_results: 1,
-        },
-      ]),
-  });
-});
-
-add_task(async function general() {
-  await doGeneralBookmarkTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([
-        {
-          reason: "pause",
-          groups: "heuristic,suggested_index,general",
-          results: "search_engine,action,bookmark",
-          n_results: 3,
-        },
-      ]),
-  });
-
-  await doGeneralHistoryTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([
-        {
-          reason: "pause",
-          groups: "heuristic,general",
-          results: "search_engine,history",
-          n_results: 2,
-        },
-      ]),
-  });
-});
-
-add_task(async function suggest() {
-  await doSuggestTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([
-        {
-          groups: "heuristic,suggest",
-          results: UrlbarPrefs.get("quickSuggestRustEnabled")
-            ? "search_engine,rust_adm_nonsponsored"
-            : "search_engine,rs_adm_nonsponsored",
-          n_results: 2,
-        },
-      ]),
-  });
-});
-
-add_task(async function about_page() {
-  await doAboutPageTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([
-        {
-          reason: "pause",
-          groups: "heuristic,about_page,about_page",
-          results: "search_engine,history,history",
-          n_results: 3,
-        },
-      ]),
-  });
-});
-
-add_task(async function suggested_index() {
-  await doSuggestedIndexTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([
-        {
-          reason: "pause",
-          groups: "heuristic,suggested_index",
-          results: "search_engine,unit",
-          n_results: 2,
-        },
-      ]),
-  });
-});
diff --git a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_interaction.js b/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_interaction.js
deleted file mode 100644
index a16b55cac6..0000000000
--- a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_interaction.js
+++ /dev/null
@@ -1,68 +0,0 @@
-/* Any copyright is dedicated to the Public Domain.
- * http://creativecommons.org/publicdomain/zero/1.0/ */
-
-"use strict";
-
-// Test for the following data of impression telemetry.
-// - interaction
-
-add_setup(async function () {
-  await initInteractionTest();
-});
-
-add_task(async function topsites() {
-  await doTopsitesTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([{ reason: "pause", interaction: "topsites" }]),
-  });
-});
-
-add_task(async function typed() {
-  await doTypedTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([{ reason: "pause", interaction: "typed" }]),
-  });
-
-  await doTypedWithResultsPopupTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([{ reason: "pause", interaction: "typed" }]),
-  });
-});
-
-add_task(async function pasted() {
-  await doPastedTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([{ reason: "pause", interaction: "pasted" }]),
-  });
-
-  await doPastedWithResultsPopupTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([{ reason: "pause", interaction: "pasted" }]),
-  });
-});
-
-add_task(async function topsite_search() {
-  await doTopsitesSearchTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([
-        { reason: "pause", interaction: "topsite_search" },
-      ]),
-  });
-});
-
-add_task(async function returned_restarted_refined() {
-  await doReturnedRestartedRefinedTest({
-    trigger: () => waitForPauseImpression(),
-    assert: expected =>
-      assertImpressionTelemetry([
-        { reason: "pause" },
-        { reason: "pause", interaction: expected },
-      ]),
-  });
-});
diff --git a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_interaction_persisted_search_terms_disabled.js b/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_interaction_persisted_search_terms_disabled.js
deleted file mode 100644
index af7134b3a0..0000000000
--- a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_interaction_persisted_search_terms_disabled.js
+++ /dev/null
@@ -1,57 +0,0 @@
-/* Any copyright is dedicated to the Public Domain.
- * http://creativecommons.org/publicdomain/zero/1.0/ */
-
-"use strict";
-
-// Test impression telemetry with persisted search terms disabled.
-
-// Allow more time for Mac machines so they don't time out in verify mode.
-if (AppConstants.platform == "macosx") {
-  requestLongerTimeout(3);
-}
-
-add_setup(async function () {
-  await initInteractionTest();
-
-  await SpecialPowers.pushPrefEnv({
-    set: [["browser.urlbar.showSearchTerms.featureGate", false]],
-  });
-});
-
-add_task(async function persisted_search_terms() {
-  await doPersistedSearchTermsTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([
-        { reason: "pause" },
-        { reason: "pause", interaction: "typed" },
-      ]),
-  });
-});
-
-add_task(async function persisted_search_terms_restarted_refined() {
-  await doPersistedSearchTermsRestartedRefinedTest({
-    enabled: false,
-    trigger: () => waitForPauseImpression(),
-    assert: expected =>
-      assertImpressionTelemetry([
-        { reason: "pause" },
-        { reason: "pause", interaction: expected },
-      ]),
-  });
-});
-
-add_task(
-  async function persisted_search_terms_restarted_refined_via_abandonment() {
-    await doPersistedSearchTermsRestartedRefinedViaAbandonmentTest({
-      enabled: false,
-      trigger: () => waitForPauseImpression(),
-      assert: expected =>
-        assertImpressionTelemetry([
-          { reason: "pause" },
-          { reason: "pause" },
-          { reason: "pause", interaction: expected },
-        ]),
-    });
-  }
-);
diff --git a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_interaction_persisted_search_terms_enabled.js b/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_interaction_persisted_search_terms_enabled.js
deleted file mode 100644
index a29ff98b78..0000000000
--- a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_interaction_persisted_search_terms_enabled.js
+++ /dev/null
@@ -1,61 +0,0 @@
-/* Any copyright is dedicated to the Public Domain.
- * http://creativecommons.org/publicdomain/zero/1.0/ */
-
-"use strict";
-
-// Test impression telemetry with persisted search terms enabled.
-
-// Allow more time for Mac machines so they don't time out in verify mode.
-if (AppConstants.platform == "macosx") {
-  requestLongerTimeout(3);
-}
-
-add_setup(async function () {
-  await initInteractionTest();
-
-  await SpecialPowers.pushPrefEnv({
-    set: [
-      ["browser.urlbar.showSearchTerms.featureGate", true],
-      ["browser.urlbar.showSearchTerms.enabled", true],
-      ["browser.search.widget.inNavBar", false],
-    ],
-  });
-});
-
-add_task(async function interaction_persisted_search_terms() {
-  await doPersistedSearchTermsTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([
-        { reason: "pause" },
-        { reason: "pause", interaction: "persisted_search_terms" },
-      ]),
-  });
-});
-
-add_task(async function interaction_persisted_search_terms_restarted_refined() {
-  await doPersistedSearchTermsRestartedRefinedTest({
-    enabled: true,
-    trigger: () => waitForPauseImpression(),
-    assert: expected =>
-      assertImpressionTelemetry([
-        { reason: "pause" },
-        { reason: "pause", interaction: expected },
-      ]),
-  });
-});
-
-add_task(
-  async function interaction_persisted_search_terms_restarted_refined_via_abandonment() {
-    await doPersistedSearchTermsRestartedRefinedViaAbandonmentTest({
-      enabled: true,
-      trigger: () => waitForPauseImpression(),
-      assert: expected =>
-        assertImpressionTelemetry([
-          { reason: "pause" },
-          { reason: "pause" },
-          { reason: "pause", interaction: expected },
-        ]),
-    });
-  }
-);
diff --git a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_n_chars_n_words.js b/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_n_chars_n_words.js
deleted file mode 100644
index 528cc318e0..0000000000
--- a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_n_chars_n_words.js
+++ /dev/null
@@ -1,40 +0,0 @@
-/* Any copyright is dedicated to the Public Domain.
- * http://creativecommons.org/publicdomain/zero/1.0/ */
-
-"use strict";
-
-// Test for the following data of impression telemetry.
-// - n_chars
-// - n_words
-
-add_setup(async function () {
-  await initNCharsAndNWordsTest();
-});
-
-add_task(async function n_chars() {
-  await doNCharsTest({
-    trigger: () => waitForPauseImpression(),
-    assert: nChars =>
-      assertImpressionTelemetry([{ reason: "pause", n_chars: nChars }]),
-  });
-
-  await doNCharsWithOverMaxTextLengthCharsTest({
-    trigger: () => waitForPauseImpression(),
-    assert: nChars =>
-      assertImpressionTelemetry([{ reason: "pause", n_chars: nChars }]),
-  });
-});
-
-add_task(async function n_words() {
-  await doNWordsTest({
-    trigger: () => waitForPauseImpression(),
-    assert: nWords =>
-      assertImpressionTelemetry([{ reason: "pause", n_words: nWords }]),
-  });
-
-  await doNWordsWithOverMaxTextLengthCharsTest({
-    trigger: () => waitForPauseImpression(),
-    assert: nWords =>
-      assertImpressionTelemetry([{ reason: "pause", n_words: nWords }]),
-  });
-});
diff --git a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_preferences.js b/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_preferences.js
deleted file mode 100644
index 344e238e24..0000000000
--- a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_preferences.js
+++ /dev/null
@@ -1,41 +0,0 @@
-/* Any copyright is dedicated to the Public Domain.
- * http://creativecommons.org/publicdomain/zero/1.0/ */
-
-"use strict";
-
-// Test the impression telemetry behavior with its preferences.
-
-add_setup(async function () {
-  await setup();
-});
-
-add_task(async function pauseImpressionIntervalMs() {
-  const additionalInterval = 1000;
-  const originalInterval = UrlbarPrefs.get(
-    "searchEngagementTelemetry.pauseImpressionIntervalMs"
-  );
-  await SpecialPowers.pushPrefEnv({
-    set: [
-      [
-        "browser.urlbar.searchEngagementTelemetry.pauseImpressionIntervalMs",
-        originalInterval + additionalInterval,
-      ],
-    ],
-  });
-
-  await doTest(async browser => {
-    await openPopup("https://example.com");
-
-    // eslint-disable-next-line mozilla/no-arbitrary-setTimeout
-    await new Promise(r => setTimeout(r, originalInterval));
-    await Services.fog.testFlushAllChildren();
-    assertImpressionTelemetry([]);
-
-    // eslint-disable-next-line mozilla/no-arbitrary-setTimeout
-    await new Promise(r => setTimeout(r, additionalInterval));
-    await Services.fog.testFlushAllChildren();
-    assertImpressionTelemetry([{ sap: "urlbar_newtab" }]);
-  });
-
-  await SpecialPowers.popPrefEnv();
-});
diff --git a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_sap.js b/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_sap.js
deleted file mode 100644
index 482b906024..0000000000
--- a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_sap.js
+++ /dev/null
@@ -1,38 +0,0 @@
-/* Any copyright is dedicated to the Public Domain.
- * http://creativecommons.org/publicdomain/zero/1.0/ */
-
-"use strict";
-
-// Test for the following data of impression telemetry.
-// - sap
-
-add_setup(async function () {
-  await initSapTest();
-});
-
-add_task(async function urlbar() {
-  await doUrlbarTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([
-        { reason: "pause", sap: "urlbar_newtab" },
-        { reason: "pause", sap: "urlbar" },
-      ]),
-  });
-});
-
-add_task(async function handoff() {
-  await doHandoffTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([{ reason: "pause", sap: "handoff" }]),
-  });
-});
-
-add_task(async function urlbar_addonpage() {
-  await doUrlbarAddonpageTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([{ reason: "pause", sap: "urlbar_addonpage" }]),
-  });
-});
diff --git a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_search_engine_default_id.js b/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_search_engine_default_id.js
deleted file mode 100644
index c5bd983d7f..0000000000
--- a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_search_engine_default_id.js
+++ /dev/null
@@ -1,28 +0,0 @@
-/* Any copyright is dedicated to the Public Domain.
- * http://creativecommons.org/publicdomain/zero/1.0/ */
-
-"use strict";
-
-// Test for the following data of impression telemetry.
-// - search_engine_default_id
-
-add_setup(async function () {
-  await initSearchEngineDefaultIdTest();
-  // Increase the pausing time to ensure to ready for all suggestions.
-  await SpecialPowers.pushPrefEnv({
-    set: [
-      [
-        "browser.urlbar.searchEngagementTelemetry.pauseImpressionIntervalMs",
-        500,
-      ],
-    ],
-  });
-});
-
-add_task(async function basic() {
-  await doSearchEngineDefaultIdTest({
-    trigger: () => waitForPauseImpression(),
-    assert: engineId =>
-      assertImpressionTelemetry([{ search_engine_default_id: engineId }]),
-  });
-});
diff --git a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_search_mode.js b/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_search_mode.js
deleted file mode 100644
index 727afa3cef..0000000000
--- a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_search_mode.js
+++ /dev/null
@@ -1,72 +0,0 @@
-/* Any copyright is dedicated to the Public Domain.
- * http://creativecommons.org/publicdomain/zero/1.0/ */
-
-"use strict";
-
-// Test for the following data of impression telemetry.
-// - search_mode
-
-add_setup(async function () {
-  await initSearchModeTest();
-  // Increase the pausing time to ensure entering search mode.
-  await SpecialPowers.pushPrefEnv({
-    set: [
-      [
-        "browser.urlbar.searchEngagementTelemetry.pauseImpressionIntervalMs",
-        1000,
-      ],
-    ],
-  });
-});
-
-add_task(async function not_search_mode() {
-  await doNotSearchModeTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([{ reason: "pause", search_mode: "" }]),
-  });
-});
-
-add_task(async function search_engine() {
-  await doSearchEngineTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([
-        { reason: "pause", search_mode: "search_engine" },
-      ]),
-  });
-});
-
-add_task(async function bookmarks() {
-  await doBookmarksTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([
-        { reason: "pause", search_mode: "bookmarks" },
-      ]),
-  });
-});
-
-add_task(async function history() {
-  await doHistoryTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([{ reason: "pause", search_mode: "history" }]),
-  });
-});
-
-add_task(async function tabs() {
-  await doTabTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([{ reason: "pause", search_mode: "tabs" }]),
-  });
-});
-
-add_task(async function actions() {
-  await doActionsTest({
-    trigger: () => waitForPauseImpression(),
-    assert: () =>
-      assertImpressionTelemetry([{ reason: "pause", search_mode: "actions" }]),
-  });
-});
diff --git a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_timing.js b/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_timing.js
deleted file mode 100644
index 31f64996f3..0000000000
--- a/browser/components/urlbar/tests/engagementTelemetry/browser/browser_glean_telemetry_impression_timing.js
+++ /dev/null
@@ -1,91 +0,0 @@
-/* Any copyright is dedicated to the Public Domain.
- * http://creativecommons.org/publicdomain/zero/1.0/ */
-
-"use strict";
-
-// Test for the taking timing for the impression telemetry.
-
-add_setup(async function () {
-  await setup();
-});
-
-add_task(async function cancelImpressionTimerByEngagementEvent() {
-  const additionalInterval = 1000;
-  const originalInterval = UrlbarPrefs.get(
-    "searchEngagementTelemetry.pauseImpressionIntervalMs"
-  );
-  await SpecialPowers.pushPrefEnv({
-    set: [
-      [
-        "browser.urlbar.searchEngagementTelemetry.pauseImpressionIntervalMs",
-        originalInterval + additionalInterval,
-      ],
-    ],
-  });
-
-  for (const trigger of [doEnter, doBlur]) {
-    await doTest(async browser => {
-      await openPopup("https://example.com");
-      await trigger();
-
-      // Check whether the impression timer was canceled.
-      await new Promise(r =>
-        // eslint-disable-next-line mozilla/no-arbitrary-setTimeout
-        setTimeout(r, originalInterval + additionalInterval)
-      );
-      assertImpressionTelemetry([]);
-    });
-  }
-
-  await SpecialPowers.popPrefEnv();
-});
-
-add_task(async function cancelInpressionTimerByType() {
-  const originalInterval = UrlbarPrefs.get(
-    "searchEngagementTelemetry.pauseImpressionIntervalMs"
-  );
-
-  await doTest(async browser => {
-    await openPopup("x");
-    await new Promise(r =>
-      // eslint-disable-next-line mozilla/no-arbitrary-setTimeout
-      setTimeout(r, originalInterval / 10)
-    );
-    assertImpressionTelemetry([]);
-
-    EventUtils.synthesizeKey(" ");
-    EventUtils.synthesizeKey("z");
-    await UrlbarTestUtils.promiseSearchComplete(window);
-    assertImpressionTelemetry([]);
-    await waitForPauseImpression();
-
-    assertImpressionTelemetry([{ n_chars: 3 }]);
-  });
-});
-
-add_task(async function oneImpressionInOneSession() {
-  await doTest(async browser => {
-    await openPopup("x");
-    await waitForPauseImpression();
-
-    // Sanity check.
-    assertImpressionTelemetry([{ n_chars: 1 }]);
-
-    // Add a keyword to start new query.
-    EventUtils.synthesizeKey(" ");
-    EventUtils.synthesizeKey("z");
-    await UrlbarTestUtils.promiseSearchComplete(window);
-    await waitForPauseImpression();
-
-    // No more taking impression telemetry.
-    assertImpressionTelemetry([{ n_chars: 1 }]);
-
-    // Finish the current session.
-    await doEnter();
-
-    // Should take pause impression since new session started.
-    await openPopup("x z y");
-    await waitForPauseImpression();
-    assertImpressionTelemetry([{ n_chars: 1 }, { n_chars: 5 }]);
-  });
-});
diff --git a/browser/components/urlbar/tests/engagementTelemetry/browser/head-groups.js b/browser/components/urlbar/tests/engagementTelemetry/browser/head-groups.js
index e86c664b46..cc73c7509f 100644
--- a/browser/components/urlbar/tests/engagementTelemetry/browser/head-groups.js
+++ b/browser/components/urlbar/tests/engagementTelemetry/browser/head-groups.js
@@ -11,7 +11,7 @@ ChromeUtils.defineESModuleGetters(this, {
 });
 
 async function doHeuristicsTest({ trigger, assert }) {
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("x");
 
     await trigger();
@@ -24,7 +24,7 @@ async function doAdaptiveHistoryTest({ trigger, assert }) {
     set: [["browser.urlbar.autoFill", false]],
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await PlacesTestUtils.addVisits(["https://example.com/test"]);
     await UrlbarUtils.addToInputHistory("https://example.com/test", "examp");
 
@@ -46,7 +46,7 @@ async function doSearchHistoryTest({ trigger, assert }) {
     ],
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await UrlbarTestUtils.formHistory.add(["foofoo", "foobar"]);
 
     await openPopup("foo");
@@ -64,7 +64,7 @@ async function doRecentSearchTest({ trigger, assert }) {
     set: [["browser.urlbar.recentsearches.featureGate", true]],
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await UrlbarTestUtils.formHistory.add([
       { value: "foofoo", source: Services.search.defaultEngine.name },
     ]);
@@ -87,7 +87,7 @@ async function doSearchSuggestTest({ trigger, assert }) {
     ],
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("foo");
     await selectRowByURL("http://mochi.test:8888/?terms=foofoo");
 
@@ -101,7 +101,7 @@ async function doSearchSuggestTest({ trigger, assert }) {
 async function doTailSearchSuggestTest({ trigger, assert }) {
   const cleanup = await _useTailSuggestionsEngine();
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("hello");
     await selectRowByProvider("SearchSuggestions");
 
@@ -127,7 +127,7 @@ async function doTopPickTest({ trigger, assert }) {
     ],
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("navigational");
     await selectRowByURL("https://example.com/navigational-suggestion");
 
@@ -139,7 +139,7 @@ async function doTopPickTest({ trigger, assert }) {
 }
 
 async function doTopSiteTest({ trigger, assert }) {
-  await doTest(async browser => {
+  await doTest(async () => {
     await addTopSites("https://example.com/");
 
     await showResultByArrowDown();
@@ -158,7 +158,7 @@ async function doClipboardTest({ trigger, assert }) {
     ],
   });
   SpecialPowers.clipboardCopyString("https://example.com/clipboard");
-  await doTest(async browser => {
+  await doTest(async () => {
     await showResultByArrowDown();
     await selectRowByURL("https://example.com/clipboard");
 
@@ -173,7 +173,7 @@ async function doClipboardTest({ trigger, assert }) {
 async function doRemoteTabTest({ trigger, assert }) {
   const remoteTab = await loadRemoteTab("https://example.com");
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("example");
     await selectRowByProvider("RemoteTabs");
 
@@ -188,7 +188,7 @@ async function doAddonTest({ trigger, assert }) {
   const addon = loadOmniboxAddon({ keyword: "omni" });
   await addon.startup();
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("omni test");
 
     await trigger();
@@ -199,7 +199,7 @@ async function doAddonTest({ trigger, assert }) {
 }
 
 async function doGeneralBookmarkTest({ trigger, assert }) {
-  await doTest(async browser => {
+  await doTest(async () => {
     await PlacesUtils.bookmarks.insert({
       parentGuid: PlacesUtils.bookmarks.unfiledGuid,
       url: "https://example.com/bookmark",
@@ -219,7 +219,7 @@ async function doGeneralHistoryTest({ trigger, assert }) {
     set: [["browser.urlbar.autoFill", false]],
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await PlacesTestUtils.addVisits("https://example.com/test");
 
     await openPopup("example");
@@ -235,7 +235,7 @@ async function doGeneralHistoryTest({ trigger, assert }) {
 async function doSuggestTest({ trigger, assert }) {
   const cleanupQuickSuggest = await ensureQuickSuggestInit();
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("nonsponsored");
     await selectRowByURL("https://example.com/nonsponsored");
 
@@ -251,7 +251,7 @@ async function doAboutPageTest({ trigger, assert }) {
     set: [["browser.urlbar.maxRichResults", 3]],
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("about:");
     await selectRowByURL("about:robots");
 
@@ -267,7 +267,7 @@ async function doSuggestedIndexTest({ trigger, assert }) {
     set: [["browser.urlbar.unitConversion.enabled", true]],
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("1m to cm");
     await selectRowByProvider("UnitConversion");
 
diff --git a/browser/components/urlbar/tests/engagementTelemetry/browser/head-interaction.js b/browser/components/urlbar/tests/engagementTelemetry/browser/head-interaction.js
index 244e27d272..58c55b416f 100644
--- a/browser/components/urlbar/tests/engagementTelemetry/browser/head-interaction.js
+++ b/browser/components/urlbar/tests/engagementTelemetry/browser/head-interaction.js
@@ -14,7 +14,7 @@ ChromeUtils.defineESModuleGetters(this, {
 });
 
 async function doTopsitesTest({ trigger, assert }) {
-  await doTest(async browser => {
+  await doTest(async () => {
     await addTopSites("https://example.com/");
 
     await showResultByArrowDown();
@@ -120,7 +120,7 @@ async function doTopsitesSearchTest({ trigger, assert }) {
 }
 
 async function doTypedTest({ trigger, assert }) {
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("x");
 
     await trigger();
@@ -129,7 +129,7 @@ async function doTypedTest({ trigger, assert }) {
 }
 
 async function doTypedWithResultsPopupTest({ trigger, assert }) {
-  await doTest(async browser => {
+  await doTest(async () => {
     await showResultByArrowDown();
     EventUtils.synthesizeKey("x");
     await UrlbarTestUtils.promiseSearchComplete(window);
@@ -140,7 +140,7 @@ async function doTypedWithResultsPopupTest({ trigger, assert }) {
 }
 
 async function doPastedTest({ trigger, assert }) {
-  await doTest(async browser => {
+  await doTest(async () => {
     await doPaste("www.example.com");
 
     await trigger();
@@ -149,7 +149,7 @@ async function doPastedTest({ trigger, assert }) {
 }
 
 async function doPastedWithResultsPopupTest({ trigger, assert }) {
-  await doTest(async browser => {
+  await doTest(async () => {
     await showResultByArrowDown();
     await doPaste("x");
 
@@ -189,9 +189,8 @@ async function doReturnedRestartedRefinedTest({ trigger, assert }) {
   ];
 
   for (const { firstInput, secondInput, expected } of testData) {
-    await doTest(async browser => {
+    await doTest(async () => {
       await openPopup(firstInput);
-      await waitForPauseImpression();
       await doBlur();
 
       await UrlbarTestUtils.promisePopupOpen(window, () => {
@@ -211,9 +210,8 @@ async function doReturnedRestartedRefinedTest({ trigger, assert }) {
 }
 
 async function doPersistedSearchTermsTest({ trigger, assert }) {
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("x");
-    await waitForPauseImpression();
     await doEnter();
 
     await openPopup("x");
@@ -258,9 +256,8 @@ async function doPersistedSearchTermsRestartedRefinedTest({
   ];
 
   for (const { firstInput, secondInput, expected } of testData) {
-    await doTest(async browser => {
+    await doTest(async () => {
       await openPopup(firstInput);
-      await waitForPauseImpression();
       await doEnter();
 
       await UrlbarTestUtils.promisePopupOpen(window, () => {
@@ -314,13 +311,11 @@ async function doPersistedSearchTermsRestartedRefinedViaAbandonmentTest({
   ];
 
   for (const { firstInput, secondInput, expected } of testData) {
-    await doTest(async browser => {
+    await doTest(async () => {
       await openPopup("any search");
-      await waitForPauseImpression();
       await doEnter();
 
       await openPopup(firstInput);
-      await waitForPauseImpression();
       await doBlur();
 
       await UrlbarTestUtils.promisePopupOpen(window, () => {
diff --git a/browser/components/urlbar/tests/engagementTelemetry/browser/head-n_chars_n_words.js b/browser/components/urlbar/tests/engagementTelemetry/browser/head-n_chars_n_words.js
index 6d4c61c7f0..154f3ec11c 100644
--- a/browser/components/urlbar/tests/engagementTelemetry/browser/head-n_chars_n_words.js
+++ b/browser/components/urlbar/tests/engagementTelemetry/browser/head-n_chars_n_words.js
@@ -7,7 +7,7 @@
 
 async function doNCharsTest({ trigger, assert }) {
   for (const input of ["x", "xx", "xx x", "xx x "]) {
-    await doTest(async browser => {
+    await doTest(async () => {
       await openPopup(input);
 
       await trigger();
@@ -17,7 +17,7 @@ async function doNCharsTest({ trigger, assert }) {
 }
 
 async function doNCharsWithOverMaxTextLengthCharsTest({ trigger, assert }) {
-  await doTest(async browser => {
+  await doTest(async () => {
     let input = "";
     for (let i = 0; i < UrlbarUtils.MAX_TEXT_LENGTH * 2; i++) {
       input += "x";
@@ -31,7 +31,7 @@ async function doNCharsWithOverMaxTextLengthCharsTest({ trigger, assert }) {
 
 async function doNWordsTest({ trigger, assert }) {
   for (const input of ["x", "xx", "xx x", "xx x "]) {
-    await doTest(async browser => {
+    await doTest(async () => {
       await openPopup(input);
 
       await trigger();
@@ -42,7 +42,7 @@ async function doNWordsTest({ trigger, assert }) {
 }
 
 async function doNWordsWithOverMaxTextLengthCharsTest({ trigger, assert }) {
-  await doTest(async browser => {
+  await doTest(async () => {
     const word = "1234 ";
     let input = "";
     while (input.length < UrlbarUtils.MAX_TEXT_LENGTH * 2) {
diff --git a/browser/components/urlbar/tests/engagementTelemetry/browser/head-sap.js b/browser/components/urlbar/tests/engagementTelemetry/browser/head-sap.js
index ef95873813..ee74136b22 100644
--- a/browser/components/urlbar/tests/engagementTelemetry/browser/head-sap.js
+++ b/browser/components/urlbar/tests/engagementTelemetry/browser/head-sap.js
@@ -6,7 +6,7 @@
 /* import-globals-from head.js */
 
 async function doUrlbarNewTabTest({ trigger, assert }) {
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("x");
 
     await trigger();
@@ -15,9 +15,8 @@ async function doUrlbarNewTabTest({ trigger, assert }) {
 }
 
 async function doUrlbarTest({ trigger, assert }) {
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("x");
-    await waitForPauseImpression();
     await doEnter();
     await openPopup("y");
 
diff --git a/browser/components/urlbar/tests/engagementTelemetry/browser/head-search_engine_default_id.js b/browser/components/urlbar/tests/engagementTelemetry/browser/head-search_engine_default_id.js
index c0af764e7f..5bf8cc3735 100644
--- a/browser/components/urlbar/tests/engagementTelemetry/browser/head-search_engine_default_id.js
+++ b/browser/components/urlbar/tests/engagementTelemetry/browser/head-search_engine_default_id.js
@@ -6,7 +6,7 @@
 /* import-globals-from head.js */
 
 async function doSearchEngineDefaultIdTest({ trigger, assert }) {
-  await doTest(async browser => {
+  await doTest(async () => {
     info("Test with current engine");
     const defaultEngine = await Services.search.getDefault();
 
@@ -15,7 +15,7 @@ async function doSearchEngineDefaultIdTest({ trigger, assert }) {
     await assert(defaultEngine.telemetryId);
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     info("Test with new engine");
     const defaultEngine = await Services.search.getDefault();
     const newEngineName = "NewDummyEngine";
diff --git a/browser/components/urlbar/tests/engagementTelemetry/browser/head-search_mode.js b/browser/components/urlbar/tests/engagementTelemetry/browser/head-search_mode.js
index 5c877da05f..86151e1ba3 100644
--- a/browser/components/urlbar/tests/engagementTelemetry/browser/head-search_mode.js
+++ b/browser/components/urlbar/tests/engagementTelemetry/browser/head-search_mode.js
@@ -6,7 +6,7 @@
 /* import-globals-from head.js */
 
 async function doNotSearchModeTest({ trigger, assert }) {
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("x");
 
     await trigger();
@@ -15,7 +15,7 @@ async function doNotSearchModeTest({ trigger, assert }) {
 }
 
 async function doSearchEngineTest({ trigger, assert }) {
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("x");
     await UrlbarTestUtils.enterSearchMode(window);
 
@@ -25,7 +25,7 @@ async function doSearchEngineTest({ trigger, assert }) {
 }
 
 async function doBookmarksTest({ trigger, assert }) {
-  await doTest(async browser => {
+  await doTest(async () => {
     await PlacesUtils.bookmarks.insert({
       parentGuid: PlacesUtils.bookmarks.unfiledGuid,
       url: "https://example.com/bookmark",
@@ -47,7 +47,7 @@ async function doHistoryTest({ trigger, assert }) {
     set: [["browser.urlbar.autoFill", false]],
   });
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await PlacesTestUtils.addVisits("https://example.com/test");
     await openPopup("example");
     await UrlbarTestUtils.enterSearchMode(window, {
@@ -65,7 +65,7 @@ async function doHistoryTest({ trigger, assert }) {
 async function doTabTest({ trigger, assert }) {
   const tab = BrowserTestUtils.addTab(gBrowser, "https://example.com/");
 
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("example");
     await UrlbarTestUtils.enterSearchMode(window, {
       source: UrlbarUtils.RESULT_SOURCE.TABS,
@@ -80,7 +80,7 @@ async function doTabTest({ trigger, assert }) {
 }
 
 async function doActionsTest({ trigger, assert }) {
-  await doTest(async browser => {
+  await doTest(async () => {
     await openPopup("add");
     await UrlbarTestUtils.enterSearchMode(window, {
       source: UrlbarUtils.RESULT_SOURCE.ACTIONS,
diff --git a/browser/components/urlbar/tests/engagementTelemetry/browser/head.js b/browser/components/urlbar/tests/engagementTelemetry/browser/head.js
index 367387b0e8..4317a50930 100644
--- a/browser/components/urlbar/tests/engagementTelemetry/browser/head.js
+++ b/browser/components/urlbar/tests/engagementTelemetry/browser/head.js
@@ -58,10 +58,6 @@ function assertEngagementTelemetry(expectedExtraList) {
   _assertGleanTelemetry("engagement", expectedExtraList);
 }
 
-function assertImpressionTelemetry(expectedExtraList) {
-  _assertGleanTelemetry("impression", expectedExtraList);
-}
-
 function assertExposureTelemetry(expectedExtraList) {
   _assertGleanTelemetry("exposure", expectedExtraList);
 }
@@ -204,12 +200,6 @@ async function doPasteAndGo(data) {
 async function doTest(testFn) {
   await Services.fog.testFlushAllChildren();
   Services.fog.testResetFOG();
-  // Enable recording telemetry for impression, as it is disabled by default.
-  Services.fog.setMetricsFeatureConfig(
-    JSON.stringify({
-      "urlbar.impression": true,
-    })
-  );
 
   gURLBar.controller.engagementEvent.reset();
   await PlacesUtils.history.clear();
@@ -223,8 +213,8 @@ async function doTest(testFn) {
 
   try {
     await BrowserTestUtils.withNewTab(gBrowser, testFn);
-  } finally {
-    Services.fog.setMetricsFeatureConfig("{}");
+  } catch (e) {
+    console.error(e);
   }
 }
 
@@ -423,10 +413,6 @@ async function setup() {
       ["browser.urlbar.quickactions.minimumSearchString", 0],
       ["browser.urlbar.suggest.quickactions", true],
       ["browser.urlbar.shortcuts.quickactions", true],
-      [
-        "browser.urlbar.searchEngagementTelemetry.pauseImpressionIntervalMs",
-        100,
-      ],
     ],
   });
 
@@ -461,13 +447,3 @@ async function showResultByArrowDown() {
   });
   await UrlbarTestUtils.promiseSearchComplete(window);
 }
-
-async function waitForPauseImpression() {
-  await new Promise(r =>
-    setTimeout(
-      r,
-      UrlbarPrefs.get("searchEngagementTelemetry.pauseImpressionIntervalMs")
-    )
-  );
-  await Services.fog.testFlushAllChildren();
-}