1 files changed, 64 insertions, 0 deletions
diff --git a/devtools/client/inspector/changes/test/browser_changes_rule_add.js b/devtools/client/inspector/changes/test/browser_changes_rule_add.js
new file mode 100644
index 0000000000..215f1f3605
--- /dev/null
+++ b/devtools/client/inspector/changes/test/browser_changes_rule_add.js
@@ -0,0 +1,64 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test that adding a new CSS rule in the Rules view is tracked in the Changes panel.
+// Renaming the selector of the new rule should overwrite the tracked selector.
+
+const TEST_URI = `
+  <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);
+  const panel = doc.querySelector("#sidebar-panel-changes");
+
+  await selectNode("div", inspector);
+  await testTrackAddNewRule(store, inspector, ruleView, panel);
+  await testTrackRenameNewRule(store, inspector, ruleView, panel);
+});
+
+async function testTrackAddNewRule(store, inspector, ruleView, panel) {
+  const onTrackChange = waitForDispatch(store, "TRACK_CHANGE");
+  info("Adding a new CSS rule in the Rule view");
+  await addNewRule(inspector, ruleView);
+  info("Pressing escape to leave the editor");
+  EventUtils.synthesizeKey("KEY_Escape");
+  info("Waiting for changes to be tracked");
+  await onTrackChange;
+
+  const addedSelectors = getAddedSelectors(panel);
+  const removedSelectors = getRemovedSelectors(panel);
+  is(addedSelectors.length, 1, "One selector was tracked as added");
+  is(addedSelectors.item(0).title, "div", "New rule's has DIV selector");
+  is(removedSelectors.length, 0, "No selectors tracked as removed");
+}
+
+async function testTrackRenameNewRule(store, inspector, ruleView, panel) {
+  info("Focusing the first rule's selector name in the Rule view");
+  const ruleEditor = getRuleViewRuleEditor(ruleView, 1);
+  const editor = await focusEditableField(ruleView, ruleEditor.selectorText);
+  info("Entering a new selector name");
+  editor.input.value = ".test";
+
+  // Expect two "TRACK_CHANGE" actions: one for removal, one for addition.
+  const onTrackChange = waitForDispatch(store, "TRACK_CHANGE", 2);
+  const onRuleViewChanged = once(ruleView, "ruleview-changed");
+  EventUtils.synthesizeKey("KEY_Enter");
+  await onRuleViewChanged;
+  info("Waiting for changes to be tracked");
+  await onTrackChange;
+
+  const addedSelectors = getAddedSelectors(panel);
+  const removedSelectors = getRemovedSelectors(panel);
+  is(addedSelectors.length, 1, "One selector was tracked as added");
+  is(
+    addedSelectors.item(0).title,
+    ".test",
+    "New rule's selector was updated in place."
+  );
+  is(removedSelectors.length, 0, "No selectors tracked as removed");
+}