1 files changed, 79 insertions, 0 deletions
diff --git a/devtools/client/netmonitor/test/browser_net_json-empty.js b/devtools/client/netmonitor/test/browser_net_json-empty.js
new file mode 100644
index 0000000000..0179a97d49
--- /dev/null
+++ b/devtools/client/netmonitor/test/browser_net_json-empty.js
@@ -0,0 +1,79 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/**
+ * Tests if empty JSON responses are properly displayed.
+ */
+
+add_task(async function () {
+  const { tab, monitor } = await initNetMonitor(
+    JSON_EMPTY_URL + "?name=empty",
+    { requestCount: 1 }
+  );
+  info("Starting test... ");
+
+  const { document, store, windowRequire } = monitor.panelWin;
+  const { L10N } = windowRequire("devtools/client/netmonitor/src/utils/l10n");
+  const Actions = windowRequire("devtools/client/netmonitor/src/actions/index");
+
+  store.dispatch(Actions.batchEnable(false));
+
+  // Execute requests.
+  await performRequests(monitor, tab, 1);
+
+  const onResponsePanelReady = waitForDOM(
+    document,
+    "#response-panel .data-header"
+  );
+
+  store.dispatch(Actions.toggleNetworkDetails());
+  clickOnSidebarTab(document, "response");
+
+  await onResponsePanelReady;
+
+  const codeMirrorReady = waitForDOM(
+    document,
+    "#response-panel .CodeMirror-code"
+  );
+
+  const header = document.querySelector(
+    "#response-panel .raw-data-toggle-input .devtools-checkbox-toggle"
+  );
+  clickElement(header, monitor);
+
+  await codeMirrorReady;
+
+  const tabpanel = document.querySelector("#response-panel");
+  is(
+    tabpanel.querySelectorAll(".empty-notice").length,
+    0,
+    "The empty notice should not be displayed in this tabpanel."
+  );
+
+  is(
+    tabpanel.querySelector(".response-error-header") === null,
+    true,
+    "The response error header doesn't have the intended visibility."
+  );
+  is(
+    tabpanel.querySelector(".CodeMirror-code") === null,
+    false,
+    "The response editor has the intended visibility."
+  );
+  is(
+    tabpanel.querySelector(".response-image-box") === null,
+    true,
+    "The response image box doesn't have the intended visibility."
+  );
+
+  const jsonView = tabpanel.querySelector(".data-label") || {};
+  is(
+    jsonView.textContent === L10N.getStr("jsonScopeName"),
+    true,
+    "The response json view has the intended visibility."
+  );
+
+  await teardown(monitor);
+});