1 files changed, 156 insertions, 0 deletions
diff --git a/browser/components/translations/tests/browser/browser_translations_telemetry_switch_languages.js b/browser/components/translations/tests/browser/browser_translations_telemetry_switch_languages.js
new file mode 100644
index 0000000000..6c06abab95
--- /dev/null
+++ b/browser/components/translations/tests/browser/browser_translations_telemetry_switch_languages.js
@@ -0,0 +1,156 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/**
+ * Tests the telemetry events for switching the from-language.
+ */
+add_task(async function test_translations_telemetry_switch_from_language() {
+  const { cleanup, runInPage } = await loadTestPage({
+    page: SPANISH_PAGE_URL,
+    languagePairs: LANGUAGE_PAIRS,
+  });
+
+  await FullPageTranslationsTestUtils.assertTranslationsButton(
+    { button: true },
+    "The button is available."
+  );
+
+  await FullPageTranslationsTestUtils.assertPageIsUntranslated(runInPage);
+
+  await FullPageTranslationsTestUtils.openTranslationsPanel({
+    onOpenPanel: FullPageTranslationsTestUtils.assertPanelViewDefault,
+  });
+
+  FullPageTranslationsTestUtils.assertSelectedFromLanguage("es");
+  FullPageTranslationsTestUtils.switchSelectedFromLanguage("en");
+
+  await TestTranslationsTelemetry.assertEvent(Glean.translationsPanel.open, {
+    expectedEventCount: 1,
+    expectNewFlowId: true,
+    finalValuePredicates: [
+      value => value.extra.auto_show === "false",
+      value => value.extra.view_name === "defaultView",
+      value => value.extra.opened_from === "translationsButton",
+      value => value.extra.document_language === "es",
+    ],
+  });
+  await TestTranslationsTelemetry.assertEvent(
+    Glean.translationsPanel.changeFromLanguage,
+    {
+      expectedEventCount: 1,
+      expectNewFlowId: false,
+      finalValuePredicates: [value => value.extra.language === "en"],
+    }
+  );
+
+  FullPageTranslationsTestUtils.switchSelectedFromLanguage("es");
+
+  await TestTranslationsTelemetry.assertEvent(
+    Glean.translationsPanel.changeFromLanguage,
+    {
+      expectedEventCount: 2,
+      expectNewFlowId: false,
+      finalValuePredicates: [value => value.extra.language === "es"],
+    }
+  );
+
+  FullPageTranslationsTestUtils.switchSelectedFromLanguage("");
+
+  await TestTranslationsTelemetry.assertEvent(
+    Glean.translationsPanel.changeFromLanguage,
+    {
+      expectedEventCount: 2,
+    }
+  );
+
+  FullPageTranslationsTestUtils.switchSelectedFromLanguage("en");
+
+  await TestTranslationsTelemetry.assertEvent(
+    Glean.translationsPanel.changeFromLanguage,
+    {
+      expectedEventCount: 3,
+      expectNewFlowId: false,
+      finalValuePredicates: [value => value.extra.language === "en"],
+    }
+  );
+
+  await cleanup();
+});
+
+/**
+ * Tests the telemetry events for switching the to-language.
+ */
+add_task(async function test_translations_telemetry_switch_to_language() {
+  const { cleanup, runInPage } = await loadTestPage({
+    page: SPANISH_PAGE_URL,
+    languagePairs: LANGUAGE_PAIRS,
+  });
+
+  await FullPageTranslationsTestUtils.assertTranslationsButton(
+    { button: true },
+    "The button is available."
+  );
+
+  await FullPageTranslationsTestUtils.assertPageIsUntranslated(runInPage);
+
+  await FullPageTranslationsTestUtils.openTranslationsPanel({
+    onOpenPanel: FullPageTranslationsTestUtils.assertPanelViewDefault,
+  });
+
+  FullPageTranslationsTestUtils.assertSelectedToLanguage("en");
+  FullPageTranslationsTestUtils.switchSelectedToLanguage("fr");
+
+  await TestTranslationsTelemetry.assertEvent(Glean.translationsPanel.open, {
+    expectedEventCount: 1,
+    expectNewFlowId: true,
+    finalValuePredicates: [
+      value => value.extra.auto_show === "false",
+      value => value.extra.view_name === "defaultView",
+      value => value.extra.opened_from === "translationsButton",
+      value => value.extra.document_language === "es",
+    ],
+  });
+  await TestTranslationsTelemetry.assertEvent(
+    Glean.translationsPanel.changeToLanguage,
+    {
+      expectedEventCount: 1,
+      expectNewFlowId: false,
+      finalValuePredicates: [value => value.extra.language === "fr"],
+    }
+  );
+
+  FullPageTranslationsTestUtils.switchSelectedToLanguage("en");
+
+  await TestTranslationsTelemetry.assertEvent(
+    Glean.translationsPanel.changeToLanguage,
+    {
+      expectedEventCount: 2,
+      expectNewFlowId: false,
+      finalValuePredicates: [value => value.extra.language === "en"],
+    }
+  );
+
+  FullPageTranslationsTestUtils.switchSelectedToLanguage("");
+
+  await TestTranslationsTelemetry.assertEvent(
+    Glean.translationsPanel.changeToLanguage,
+    {
+      expectedEventCount: 2,
+    }
+  );
+
+  FullPageTranslationsTestUtils.switchSelectedToLanguage("en");
+
+  await TestTranslationsTelemetry.assertEvent(
+    Glean.translationsPanel.changeToLanguage,
+    {
+      expectedEventCount: 3,
+      expectNewFlowId: false,
+      finalValuePredicates: [value => value.extra.language === "en"],
+    }
+  );
+
+  await cleanup();
+});