test($compile): relax SVG circle verification for "unsized" parents

This currently only seems to be the case on MS Edge (tested on version 25.10586.0.0, Win 10).

Author: gkalpak

test/ng/compileSpec.js

@@ -231,11 +231,26 @@ describe('$compile', function() {
 
   describe('svg namespace transcludes', function() {
     // this method assumes some sort of sized SVG element is being inspected.
-    function assertIsValidSvgCircle(elem) {
+    function assertIsValidSvgCircle(elem, possiblyUnsizedParent) {
       expect(isUnknownElement(elem)).toBe(false);
       expect(isSVGElement(elem)).toBe(true);
+
       var box = elem.getBoundingClientRect();
-      expect(box.width === 0 && box.height === 0).toBe(false);
+      var hasWidthOrHeight = (box.width !== 0) || (box.height !== 0);
+
+      if (possiblyUnsizedParent && !hasWidthOrHeight) {
+        // On MS Edge, assuming `<svg><foreignObject><svg><circle /></svg></foreignObject></svg>`,
+        // the nested `svg` and `circle` both have 0 width/height, despite having the appropriate
+        // attributes set.
+        // In that case, even if the `$compiler` has done its job well, the bounding `ClientRect` is
+        // not a reliable way to verify a valid SVG circle.
+        var parent = elem.parentNode;
+        var parentBox = parent && parent.getBoundingClientRect();
+
+        hasWidthOrHeight = parentBox && (parentBox.width === 0) && (parentBox.height === 0);
+      }
+
+      expect(hasWidthOrHeight).toBe(true);
     }
 
     it('should handle transcluded svg elements', inject(function($compile) {
@@ -309,7 +324,7 @@ describe('$compile', function() {
         document.body.appendChild(element[0]);
 
         var circle = element.find('circle');
-        assertIsValidSvgCircle(circle[0]);
+        assertIsValidSvgCircle(circle[0], true);
       }));
     }