1 files changed, 63 insertions, 0 deletions
diff --git a/devtools/client/responsive/test/browser/browser_toolbox_rule_view.js b/devtools/client/responsive/test/browser/browser_toolbox_rule_view.js
new file mode 100644
index 0000000000..ff4bc4e39f
--- /dev/null
+++ b/devtools/client/responsive/test/browser/browser_toolbox_rule_view.js
@@ -0,0 +1,63 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Check that when the viewport is resized, the rule-view refreshes.
+
+const TEST_URI = `${URL_ROOT}doc_toolbox_rule_view.html`;
+
+addRDMTask(TEST_URI, async function ({ ui, manager }) {
+  info("Open the responsive design mode and set its size to 500x500 to start");
+  await setViewportSize(ui, manager, 500, 500);
+
+  info("Open the inspector, rule-view and select the test node");
+  const { inspector, view } = await openRuleView();
+  await selectNode("div", inspector);
+
+  info("Try shrinking the viewport and checking the applied styles");
+  await testShrink(view, ui, manager);
+
+  info("Try growing the viewport and checking the applied styles");
+  await testGrow(view, ui, manager);
+
+  info("Check that ESC still opens the split console");
+  await testEscapeOpensSplitConsole(inspector);
+
+  await closeToolbox();
+});
+
+async function testShrink(ruleView, ui, manager) {
+  is(numberOfRules(ruleView), 2, "Should have two rules initially.");
+
+  info("Resize to 100x100 and wait for the rule-view to update");
+  const onRefresh = ruleView.once("ruleview-refreshed");
+  await setViewportSize(ui, manager, 100, 100);
+  await onRefresh;
+
+  is(numberOfRules(ruleView), 3, "Should have three rules after shrinking.");
+}
+
+async function testGrow(ruleView, ui, manager) {
+  info("Resize to 500x500 and wait for the rule-view to update");
+  const onRefresh = ruleView.once("ruleview-refreshed");
+  await setViewportSize(ui, manager, 500, 500);
+  await onRefresh;
+
+  is(numberOfRules(ruleView), 2, "Should have two rules after growing.");
+}
+
+async function testEscapeOpensSplitConsole(inspector) {
+  ok(!inspector._toolbox._splitConsole, "Console is not split.");
+
+  info("Press escape");
+  const onSplit = inspector._toolbox.once("split-console");
+  EventUtils.synthesizeKey("KEY_Escape");
+  await onSplit;
+
+  ok(inspector._toolbox._splitConsole, "Console is split after pressing ESC.");
+}
+
+function numberOfRules(ruleView) {
+  return ruleView.element.querySelectorAll(".ruleview-code").length;
+}