selection: Align collapse-NN.html and extend-NN.html to the latest draft.

third_party/WebKit/LayoutTests/external/wpt/selection/collapse.js

 "use strict";
 
 function testCollapse(range, point) {
     selection.removeAllRanges();
     var addedRange;
     if (range) {
         addedRange = range.cloneRange();
         selection.addRange(addedRange);
     }
 
     if (point[0].nodeType == Node.DOCUMENT_TYPE_NODE) {
         assert_throws("INVALID_NODE_TYPE_ERR", function() {
             selection.collapse(point[0], point[1]);
         }, "Must throw INVALID_NODE_TYPE_ERR when collapse()ing if the node is a DocumentType");
         return;
     }
 
     if (point[1] < 0 || point[1] > getNodeLength(point[0])) {
         assert_throws("INDEX_SIZE_ERR", function() {
             selection.collapse(point[0], point[1]);
         }, "Must throw INDEX_SIZE_ERR when collapse()ing if the offset is negative or greater than the node's length");
         return;
     }
 
+    if (!document.contains(point[0])) {
+        assertSelectionNoChange(function() {
+            selection.collapse(point[0], point[1]);
+        });
+        return;
+    }
+
     selection.collapse(point[0], point[1]);
 
     assert_equals(selection.rangeCount, 1,
         "selection.rangeCount must equal 1 after collapse()");
     assert_equals(selection.focusNode, point[0],
         "focusNode must equal the node we collapse()d to");
     assert_equals(selection.focusOffset, point[1],
         "focusOffset must equal the offset we collapse()d to");
     assert_equals(selection.focusNode, selection.anchorNode,
         "focusNode and anchorNode must be equal after collapse()");
@@ skipping 49 matching lines @@
             }
         }, "Set up range " + i + " " + testRanges[i]);
         for (var j = 0; j < testPoints.length; j++) {
             tests.push(["Range " + i + " " + testRanges[i] + ", point " + j + " " + testPoints[j], range, testPointsCached[j]]);
         }
     }
 
     generate_tests(testCollapse, tests);
 }