1 files changed, 54 insertions, 0 deletions
diff --git a/devtools/client/animationinspector/test/unit/test_timeScale_dimensions.js b/devtools/client/animationinspector/test/unit/test_timeScale_dimensions.js
new file mode 100644
index 000000000..f6d80e60b
--- /dev/null
+++ b/devtools/client/animationinspector/test/unit/test_timeScale_dimensions.js
@@ -0,0 +1,54 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* Any copyright is dedicated to the Public Domain.
+   https://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const Cu = Components.utils;
+const {require} = Cu.import("resource://devtools/shared/Loader.jsm", {});
+const {TimeScale} = require("devtools/client/animationinspector/utils");
+
+const TEST_ENDDELAY_X = [{
+  desc: "Testing positive-endDelay animations",
+  animations: [{
+    previousStartTime: 0,
+    duration: 500,
+    playbackRate: 1,
+    iterationCount: 3,
+    delay: 500,
+    endDelay: 500
+  }],
+  expectedEndDelayX: 80
+}, {
+  desc: "Testing negative-endDelay animations",
+  animations: [{
+    previousStartTime: 0,
+    duration: 500,
+    playbackRate: 1,
+    iterationCount: 9,
+    delay: 500,
+    endDelay: -500
+  }],
+  expectedEndDelayX: 90
+}];
+
+function run_test() {
+  do_print("Test calculating endDelayX");
+
+  // Be independent of possible prior tests
+  TimeScale.reset();
+
+  for (let {desc, animations, expectedEndDelayX} of TEST_ENDDELAY_X) {
+    do_print(`Adding animations: ${desc}`);
+
+    for (let state of animations) {
+      TimeScale.addAnimation(state);
+
+      let {endDelayX} = TimeScale.getAnimationDimensions({state});
+      equal(endDelayX, expectedEndDelayX);
+
+      TimeScale.reset();
+    }
+  }
+}