1 files changed, 68 insertions, 0 deletions
diff --git a/devtools/client/inspector/changes/test/browser_changes_declaration_rename.js b/devtools/client/inspector/changes/test/browser_changes_declaration_rename.js
new file mode 100644
index 0000000000..245ce50121
--- /dev/null
+++ b/devtools/client/inspector/changes/test/browser_changes_declaration_rename.js
@@ -0,0 +1,68 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test that renaming the property of a CSS declaration in the Rule view is tracked.
+
+const TEST_URI = `
+  <style type='text/css'>
+    div {
+      color: red;
+    }
+  </style>
+  <div></div>
+`;
+
+add_task(async function () {
+  await addTab("data:text/html;charset=utf-8," + encodeURIComponent(TEST_URI));
+  const { inspector, view: ruleView } = await openRuleView();
+  const { document: doc, store } = selectChangesView(inspector);
+
+  await selectNode("div", inspector);
+  const prop = getTextProperty(ruleView, 1, { color: "red" });
+
+  let onTrackChange;
+
+  const oldPropertyName = "color";
+  const newPropertyName = "background-color";
+
+  info(`Rename the CSS declaration name to ${newPropertyName}`);
+  onTrackChange = waitForDispatch(store, "TRACK_CHANGE");
+  await renameProperty(ruleView, prop, newPropertyName);
+  info("Wait for the change to be tracked");
+  await onTrackChange;
+
+  const removeDecl = getRemovedDeclarations(doc);
+  const addDecl = getAddedDeclarations(doc);
+
+  is(removeDecl.length, 1, "One declaration tracked as removed");
+  is(
+    removeDecl[0].property,
+    oldPropertyName,
+    `Removed declaration has old property name: ${oldPropertyName}`
+  );
+  is(addDecl.length, 1, "One declaration tracked as added");
+  is(
+    addDecl[0].property,
+    newPropertyName,
+    `Added declaration has new property name: ${newPropertyName}`
+  );
+
+  info(
+    `Reverting the CSS declaration name to ${oldPropertyName} should clear changes.`
+  );
+  onTrackChange = waitForDispatch(store, "TRACK_CHANGE");
+  await renameProperty(ruleView, prop, oldPropertyName);
+  info("Wait for the change to be tracked");
+  await onTrackChange;
+
+  await waitFor(
+    () => !getRemovedDeclarations(doc).length,
+    "No declaration tracked as removed"
+  );
+  await waitFor(
+    () => !getAddedDeclarations(doc).length,
+    "No declaration tracked as added"
+  );
+});