1 files changed, 74 insertions, 0 deletions
diff --git a/devtools/client/animationinspector/test/browser_animation_keyframe_markers.js b/devtools/client/animationinspector/test/browser_animation_keyframe_markers.js
new file mode 100644
index 000000000..789c0efb6
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+++ b/devtools/client/animationinspector/test/browser_animation_keyframe_markers.js
@@ -0,0 +1,74 @@
+/* vim: set ts=2 et sw=2 tw=80: */
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test that when an animation is selected and its list of properties is shown,
+// there are keyframes markers next to each property being animated.
+
+const EXPECTED_PROPERTIES = [
+  "backgroundColor",
+  "backgroundPosition",
+  "backgroundSize",
+  "borderBottomLeftRadius",
+  "borderBottomRightRadius",
+  "borderTopLeftRadius",
+  "borderTopRightRadius",
+  "filter",
+  "height",
+  "transform",
+  "width"
+];
+
+add_task(function* () {
+  yield addTab(URL_ROOT + "doc_keyframes.html");
+  let {panel} = yield openAnimationInspector();
+  let timeline = panel.animationsTimelineComponent;
+
+  info("Expand the animation");
+  yield clickOnAnimation(panel, 0);
+
+  ok(timeline.rootWrapperEl.querySelectorAll(".frames .keyframes").length,
+     "There are container elements for displaying keyframes");
+
+  let data = yield getExpectedKeyframesData(timeline.animations[0]);
+  for (let propertyName in data) {
+    info("Check the keyframe markers for " + propertyName);
+    let widthMarkerSelector = ".frame[data-property=" + propertyName + "]";
+    let markers = timeline.rootWrapperEl.querySelectorAll(widthMarkerSelector);
+
+    is(markers.length, data[propertyName].length,
+       "The right number of keyframes was found for " + propertyName);
+
+    let offsets = [...markers].map(m => parseFloat(m.dataset.offset));
+    let values = [...markers].map(m => m.dataset.value);
+    for (let i = 0; i < markers.length; i++) {
+      is(markers[i].dataset.offset, offsets[i],
+         "Marker " + i + " for " + propertyName + " has the right offset");
+      is(markers[i].dataset.value, values[i],
+         "Marker " + i + " for " + propertyName + " has the right value");
+    }
+  }
+});
+
+function* getExpectedKeyframesData(animation) {
+  // We're testing the UI state here, so it's fine to get the list of expected
+  // properties from the animation actor.
+  let properties = yield animation.getProperties();
+  let data = {};
+
+  for (let expectedProperty of EXPECTED_PROPERTIES) {
+    data[expectedProperty] = [];
+    for (let {name, values} of properties) {
+      if (name !== expectedProperty) {
+        continue;
+      }
+      for (let {offset, value} of values) {
+        data[expectedProperty].push({offset, value});
+      }
+    }
+  }
+
+  return data;
+}