1 files changed, 43 insertions, 0 deletions
diff --git a/devtools/client/inspector/changes/test/browser_changes_declaration_remove.js b/devtools/client/inspector/changes/test/browser_changes_declaration_remove.js
new file mode 100644
index 0000000000..60b61c3196
--- /dev/null
+++ b/devtools/client/inspector/changes/test/browser_changes_declaration_remove.js
@@ -0,0 +1,43 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test that removing a CSS declaration from a rule 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" });
+
+  const onTrackChange = waitForDispatch(store, "TRACK_CHANGE");
+  info("Remove the first declaration");
+  await removeProperty(ruleView, prop);
+  info("Wait for change to be tracked");
+  await onTrackChange;
+
+  const removeDecl = getRemovedDeclarations(doc);
+  is(removeDecl.length, 1, "One declaration was tracked as removed");
+  is(
+    removeDecl[0].property,
+    "color",
+    "Correct declaration name was tracked as removed"
+  );
+  is(
+    removeDecl[0].value,
+    "red",
+    "Correct declaration value was tracked as removed"
+  );
+});