Bug 1371115 - Part 14: add tests for moz prefixed properties. r=hiro

Since we implement following properties animatable, append to test.

* -moz-border-bottom-colors
* -moz-border-left-colors
* -moz-border-right-colors
* -moz-border-top-colors

MozReview-Commit-ID: E3zWaDcRdtE

--HG--
extra : rebase_source : 27301a4bc354f14cf3f90e8c8271be6022d99721

dom/animation/test/mozilla/test_moz-prefixed-properties.html

@@ -13,6 +13,18 @@
 "use strict";
 
 const testcases = [
+  {
+    property: "-moz-border-bottom-colors",
+  },
+  {
+    property: "-moz-border-left-colors",
+  },
+  {
+    property: "-moz-border-right-colors",
+  },
+  {
+    property: "-moz-border-top-colors",
+  },
   {
     property: "-moz-box-align"
   },
@@ -24,10 +36,6 @@ const testcases = [
   },
   {
     property: "-moz-box-orient",
-    expectedValueMap: {
-      "block-axis": "vertical",
-      "inline-axis": "horizontal",
-    }
   },
   {
     property: "-moz-box-pack"
@@ -84,9 +92,7 @@ testcases.forEach(testcase => {
         target.animate({ [property.domProp]: [value, "inherit"] },
                        { duration: 1000, delay: -500 } );
 
-      const expectedValue =
-        testcase.expectedValueMap && testcase.expectedValueMap[value]
-        ? testcase.expectedValueMap[value] : value;
+      const expectedValue = getComputedStyle(container)[property.domProp];
       assert_equals(getComputedStyle(target)[property.domProp], expectedValue,
                     `Computed style shoud be "${ expectedValue }"`);
     }, `Test inherit value for "${ testcase.property }" `