Import wpt@40665266227e475bc4a56884247d8c09d78dfb6a

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

+"use strict";
+
+function testAddRange(exception, range, endpoints, qualifier, testName) {
+    test(function() {
+        assert_equals(exception, null, "Test setup must not throw exceptions");
+
+        selection.addRange(range);
+
+        assert_equals(range.startContainer, endpoints[0],
+            "addRange() must not modify the startContainer of the Range it's given");
+        assert_equals(range.startOffset, endpoints[1],
+            "addRange() must not modify the startOffset of the Range it's given");
+        assert_equals(range.endContainer, endpoints[2],
+            "addRange() must not modify the endContainer of the Range it's given");
+        assert_equals(range.endOffset, endpoints[3],
+            "addRange() must not modify the endOffset of the Range it's given");
+    }, testName + ": " + qualifier + " addRange() must not throw exceptions or modify the range it's given");
+
+    test(function() {
+        assert_equals(exception, null, "Test setup must not throw exceptions");
+
+        assert_equals(selection.rangeCount, 1, "rangeCount must be 1");
+    }, testName + ": " + qualifier + " addRange() must result in rangeCount being 1");
+
+    // From here on out we check selection.getRangeAt(selection.rangeCount - 1)
+    // so as not to double-fail Gecko.
+
+    test(function() {
+        assert_equals(exception, null, "Test setup must not throw exceptions");
+        assert_not_equals(selection.rangeCount, 0, "Cannot proceed with tests if rangeCount is 0");
+
+        var newRange = selection.getRangeAt(selection.rangeCount - 1);
+
+        assert_not_equals(newRange, null,
+            "getRangeAt(rangeCount - 1) must not return null");
+        assert_equals(typeof newRange, "object",
+            "getRangeAt(rangeCount - 1) must return an object");
+
+        assert_equals(newRange.startContainer, range.startContainer,
+            "startContainer of the Selection's last Range must match the added Range");
+        assert_equals(newRange.startOffset, range.startOffset,
+            "startOffset of the Selection's last Range must match the added Range");
+        assert_equals(newRange.endContainer, range.endContainer,
+            "endContainer of the Selection's last Range must match the added Range");
+        assert_equals(newRange.endOffset, range.endOffset,
+            "endOffset of the Selection's last Range must match the added Range");
+    }, testName + ": " + qualifier + " addRange() must result in the selection's last range having the specified endpoints");
+
+    test(function() {
+        assert_equals(exception, null, "Test setup must not throw exceptions");
+        assert_not_equals(selection.rangeCount, 0, "Cannot proceed with tests if rangeCount is 0");
+
+        assert_equals(selection.getRangeAt(selection.rangeCount - 1), range,
+            "getRangeAt(rangeCount - 1) must return the same object we added");
+    }, testName + ": " + qualifier + " addRange() must result in the selection's last range being the same object we added");
+
+    // Let's not test many different modifications -- one should be enough.
+    test(function() {
+        assert_equals(exception, null, "Test setup must not throw exceptions");
+        assert_not_equals(selection.rangeCount, 0, "Cannot proceed with tests if rangeCount is 0");
+
+        if (range.startContainer == paras[0].firstChild
+        && range.startOffset == 0
+        && range.endContainer == paras[0].firstChild
+        && range.endOffset == 2) {
+            // Just in case . . .
+            range.setStart(paras[0].firstChild, 1);
+        } else {
+            range.setStart(paras[0].firstChild, 0);
+            range.setEnd(paras[0].firstChild, 2);
+        }
+
+        var newRange = selection.getRangeAt(selection.rangeCount - 1);
+
+        assert_equals(newRange.startContainer, range.startContainer,
+            "After mutating the " + qualifier + " added Range, startContainer of the Selection's last Range must match the added Range");
+        assert_equals(newRange.startOffset, range.startOffset,
+            "After mutating the " + qualifier + " added Range, startOffset of the Selection's last Range must match the added Range");
+        assert_equals(newRange.endContainer, range.endContainer,
+            "After mutating the " + qualifier + " added Range, endContainer of the Selection's last Range must match the added Range");
+        assert_equals(newRange.endOffset, range.endOffset,
+            "After mutating the " + qualifier + " added Range, endOffset of the Selection's last Range must match the added Range");
+    }, testName + ": modifying the " + qualifier + " added range must modify the Selection's last Range");
+
+    // Now test the other way too.
+    test(function() {
+        assert_equals(exception, null, "Test setup must not throw exceptions");
+        assert_not_equals(selection.rangeCount, 0, "Cannot proceed with tests if rangeCount is 0");
+
+        var newRange = selection.getRangeAt(selection.rangeCount - 1);
+
+        if (newRange.startContainer == paras[0].firstChild
+        && newRange.startOffset == 4
+        && newRange.endContainer == paras[0].firstChild
+        && newRange.endOffset == 6) {
+            newRange.setStart(paras[0].firstChild, 5);
+        } else {
+            newRange.setStart(paras[0].firstChild, 4);
+            newRange.setStart(paras[0].firstChild, 6);
+        }
+
+        assert_equals(newRange.startContainer, range.startContainer,
+            "After " + qualifier + " addRange(), after mutating the Selection's last Range, startContainer of the Selection's last Range must match the added Range");
+        assert_equals(newRange.startOffset, range.startOffset,
+            "After " + qualifier + " addRange(), after mutating the Selection's last Range, startOffset of the Selection's last Range must match the added Range");
+        assert_equals(newRange.endContainer, range.endContainer,
+            "After " + qualifier + " addRange(), after mutating the Selection's last Range, endContainer of the Selection's last Range must match the added Range");
+        assert_equals(newRange.endOffset, range.endOffset,
+            "After " + qualifier + " addRange(), after mutating the Selection's last Range, endOffset of the Selection's last Range must match the added Range");
+    }, testName + ": modifying the Selection's last Range must modify the " + qualifier + " added Range");
+}
+
+// Do only n evals, not n^2
+var testRangesEvaled = testRanges.map(eval);
+
+// Run a subset of all of addRange tests.
+// Huge number of tests in a single file causes problems. Each of
+// addRange-NN.html runs a part of them.
+//
+// startIndex - Start index in testRanges array
+// optionalEndIndex - End index in testRanges array + 1. If this argument is
+//     omitted, testRanges.length is applied.
+function testAddRangeSubSet(startIndex, optionalEndIndex) {
+    var endIndex = optionalEndIndex === undefined ? testRanges.length : optionalEndIndex;
+    if (startIndex < 0 || startIndex >= testRanges.length)
+        throw "Sanity check: Specified index is invalid.";
+    if (endIndex < 0 || endIndex > testRanges.length)
+        throw "Sanity check: Specified index is invalid.";
+
+    for (var i = startIndex; i < endIndex; i++) {
+        for (var j = 0; j < testRanges.length; j++) {
+            var testName = "Range " + i + " " + testRanges[i]
+                + " followed by Range " + j + " " + testRanges[j];
+
+            var exception = null;
+            try {
+                selection.removeAllRanges();
+
+                var endpoints1 = testRangesEvaled[i];
+                var range1 = ownerDocument(endpoints1[0]).createRange();
+                range1.setStart(endpoints1[0], endpoints1[1]);
+                range1.setEnd(endpoints1[2], endpoints1[3]);
+
+                if (range1.startContainer !== endpoints1[0]) {
+                    throw "Sanity check: the first Range we created must have the desired startContainer";
+                }
+                if (range1.startOffset !== endpoints1[1]) {
+                    throw "Sanity check: the first Range we created must have the desired startOffset";
+                }
+                if (range1.endContainer !== endpoints1[2]) {
+                    throw "Sanity check: the first Range we created must have the desired endContainer";
+                }
+                if (range1.endOffset !== endpoints1[3]) {
+                    throw "Sanity check: the first Range we created must have the desired endOffset";
+                }
+
+                var endpoints2 = testRangesEvaled[j];
+                var range2 = ownerDocument(endpoints2[0]).createRange();
+                range2.setStart(endpoints2[0], endpoints2[1]);
+                range2.setEnd(endpoints2[2], endpoints2[3]);
+
+                if (range2.startContainer !== endpoints2[0]) {
+                    throw "Sanity check: the second Range we created must have the desired startContainer";
+                }
+                if (range2.startOffset !== endpoints2[1]) {
+                    throw "Sanity check: the second Range we created must have the desired startOffset";
+                }
+                if (range2.endContainer !== endpoints2[2]) {
+                    throw "Sanity check: the second Range we created must have the desired endContainer";
+                }
+                if (range2.endOffset !== endpoints2[3]) {
+                    throw "Sanity check: the second Range we created must have the desired endOffset";
+                }
+            } catch (e) {
+                exception = e;
+            }
+
+            testAddRange(exception, range1, endpoints1, "first", testName);
+            testAddRange(exception, range2, endpoints2, "second", testName);
+        }
+    }
+}
+