1 files changed, 127 insertions, 0 deletions
diff --git a/devtools/client/inspector/computed/test/browser_computed_matched-selectors-toggle.js b/devtools/client/inspector/computed/test/browser_computed_matched-selectors-toggle.js
new file mode 100644
index 0000000000..756d7d47c7
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+++ b/devtools/client/inspector/computed/test/browser_computed_matched-selectors-toggle.js
@@ -0,0 +1,127 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Tests that the computed view properties can be expanded and collapsed with
+// either the twisty or by dbl-clicking on the container.
+
+const TEST_URI = `
+  <style type="text/css"> ,
+    html { color: #000000; font-size: 15pt; }
+    h1 { color: red; }
+  </style>
+  <h1>Some header text</h1>
+`;
+
+add_task(async function () {
+  await addTab("data:text/html;charset=utf-8," + encodeURIComponent(TEST_URI));
+  const { inspector, view } = await openComputedView();
+  await selectNode("h1", inspector);
+
+  await testExpandOnTwistyClick(view, inspector);
+  await testCollapseOnTwistyClick(view, inspector);
+  await testExpandOnDblClick(view, inspector);
+  await testCollapseOnDblClick(view, inspector);
+});
+
+async function testExpandOnTwistyClick(
+  { styleDocument, styleWindow },
+  inspector
+) {
+  info("Testing that a property expands on twisty click");
+
+  info("Getting twisty element");
+  const twisty = styleDocument.querySelector(".computed-expandable");
+  ok(twisty, "Twisty found");
+
+  const onExpand = inspector.once("computed-view-property-expanded");
+  info("Clicking on the twisty element");
+  twisty.click();
+
+  await onExpand;
+
+  // Expanded means the matchedselectors div is not empty
+  const div = styleDocument.querySelector(
+    ".computed-property-content .matchedselectors"
+  );
+  ok(!!div.childNodes.length, "Matched selectors are expanded on twisty click");
+}
+
+async function testCollapseOnTwistyClick(
+  { styleDocument, styleWindow },
+  inspector
+) {
+  info("Testing that a property collapses on twisty click");
+
+  info("Getting twisty element");
+  const twisty = styleDocument.querySelector(".computed-expandable");
+  ok(twisty, "Twisty found");
+
+  const onCollapse = inspector.once("computed-view-property-collapsed");
+  info("Clicking on the twisty element");
+  twisty.click();
+
+  await onCollapse;
+
+  // Collapsed means the matchedselectors div is empty
+  const div = styleDocument.querySelector(
+    ".computed-property-content .matchedselectors"
+  );
+  ok(
+    div.childNodes.length === 0,
+    "Matched selectors are collapsed on twisty click"
+  );
+}
+
+async function testExpandOnDblClick({ styleDocument, styleWindow }, inspector) {
+  info("Testing that a property expands on container dbl-click");
+
+  info("Getting computed property container");
+  const container = styleDocument.querySelector(
+    "#computed-container .computed-property-view"
+  );
+  ok(container, "Container found");
+
+  container.scrollIntoView();
+
+  const onExpand = inspector.once("computed-view-property-expanded");
+  info("Dbl-clicking on the container");
+  EventUtils.synthesizeMouseAtCenter(container, { clickCount: 2 }, styleWindow);
+
+  await onExpand;
+
+  // Expanded means the matchedselectors div is not empty
+  const div = styleDocument.querySelector(
+    ".computed-property-content .matchedselectors"
+  );
+  ok(!!div.childNodes.length, "Matched selectors are expanded on dblclick");
+}
+
+async function testCollapseOnDblClick(
+  { styleDocument, styleWindow },
+  inspector
+) {
+  info("Testing that a property collapses on container dbl-click");
+
+  info("Getting computed property container");
+  const container = styleDocument.querySelector(
+    "#computed-container .computed-property-view"
+  );
+  ok(container, "Container found");
+
+  const onCollapse = inspector.once("computed-view-property-collapsed");
+  info("Dbl-clicking on the container");
+  EventUtils.synthesizeMouseAtCenter(container, { clickCount: 2 }, styleWindow);
+
+  await onCollapse;
+
+  // Collapsed means the matchedselectors div is empty
+  const div = styleDocument.querySelector(
+    ".computed-property-content .matchedselectors"
+  );
+  ok(
+    div.childNodes.length === 0,
+    "Matched selectors are collapsed on dblclick"
+  );
+}