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182 lines
6.9 KiB
HTML
182 lines
6.9 KiB
HTML
<!doctype html>
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<title>Range.compareBoundaryPoints() tests</title>
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<link rel="author" title="Aryeh Gregor" href=ayg@aryeh.name>
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<meta name=timeout content=long>
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<div id=log></div>
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<script src=/resources/testharness.js></script>
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<script src=/resources/testharnessreport.js></script>
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<script src=../common.js></script>
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<script>
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"use strict";
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var testRangesCached = [];
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testRangesCached.push(document.createRange());
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testRangesCached[0].detach();
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for (var i = 0; i < testRangesShort.length; i++) {
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try {
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testRangesCached.push(rangeFromEndpoints(eval(testRangesShort[i])));
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} catch(e) {
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testRangesCached.push(null);
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}
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}
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var testRangesCachedClones = [];
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testRangesCachedClones.push(document.createRange());
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testRangesCachedClones[0].detach();
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for (var i = 1; i < testRangesCached.length; i++) {
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if (testRangesCached[i]) {
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testRangesCachedClones.push(testRangesCached[i].cloneRange());
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} else {
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testRangesCachedClones.push(null);
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}
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}
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// We want to run a whole bunch of extra tests with invalid "how" values (not
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// 0-3), but it's excessive to run them for every single pair of ranges --
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// there are too many of them. So just run them for a handful of the tests.
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var extraTests = [0, // detached
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1 + testRanges.indexOf("[paras[0].firstChild, 2, paras[0].firstChild, 8]"),
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1 + testRanges.indexOf("[paras[0].firstChild, 3, paras[3], 1]"),
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1 + testRanges.indexOf("[testDiv, 0, comment, 5]"),
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1 + testRanges.indexOf("[foreignDoc.documentElement, 0, foreignDoc.documentElement, 1]")];
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for (var i = 0; i < testRangesCached.length; i++) {
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var range1 = testRangesCached[i];
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var range1Desc = i + " " + (i == 0 ? "[detached]" : testRanges[i - 1]);
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for (var j = 0; j <= testRangesCachedClones.length; j++) {
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var range2;
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var range2Desc;
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if (j == testRangesCachedClones.length) {
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range2 = range1;
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range2Desc = "same as first range";
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} else {
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range2 = testRangesCachedClones[j];
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range2Desc = j + " " + (j == 0 ? "[detached]" : testRanges[j - 1]);
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}
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var hows = [Range.START_TO_START, Range.START_TO_END, Range.END_TO_END,
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Range.END_TO_START];
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if (extraTests.indexOf(i) != -1 && extraTests.indexOf(j) != -1) {
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// TODO: Make some type of reusable utility function to do this
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// work.
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hows.push(-1, 4, 5, NaN, -0, +Infinity, -Infinity);
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[65536, -65536, 65536*65536, 0.5, -0.5, -72.5].forEach(function(addend) {
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hows.push(-1 + addend, 0 + addend, 1 + addend,
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2 + addend, 3 + addend, 4 + addend);
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});
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hows.forEach(function(how) { hows.push(String(how)) });
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hows.push("6.5536e4", null, undefined, true, false, "", "quasit");
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}
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for (var k = 0; k < hows.length; k++) {
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var how = hows[k];
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test(function() {
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assert_not_equals(range1, null,
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"Creating context range threw an exception");
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assert_not_equals(range2, null,
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"Creating argument range threw an exception");
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// Convert how per WebIDL. TODO: Make some type of reusable
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// utility function to do this work.
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// "Let number be the result of calling ToNumber on the input
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// argument."
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var convertedHow = Number(how);
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// "If number is NaN, +0, −0, +∞, or −∞, return +0."
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if (isNaN(convertedHow)
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|| convertedHow == 0
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|| convertedHow == Infinity
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|| convertedHow == -Infinity) {
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convertedHow = 0;
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} else {
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// "Let posInt be sign(number) * floor(abs(number))."
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var posInt = (convertedHow < 0 ? -1 : 1) * Math.floor(Math.abs(convertedHow));
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// "Let int16bit be posInt modulo 2^16; that is, a finite
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// integer value k of Number type with positive sign and
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// less than 2^16 in magnitude such that the mathematical
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// difference of posInt and k is mathematically an integer
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// multiple of 2^16."
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//
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// "Return int16bit."
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convertedHow = posInt % 65536;
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if (convertedHow < 0) {
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convertedHow += 65536;
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}
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}
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// Now to the actual algorithm.
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// "If how is not one of
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// START_TO_START,
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// START_TO_END,
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// END_TO_END, and
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// END_TO_START,
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// throw a "NotSupportedError" exception and terminate these
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// steps."
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if (convertedHow != Range.START_TO_START
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&& convertedHow != Range.START_TO_END
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&& convertedHow != Range.END_TO_END
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&& convertedHow != Range.END_TO_START) {
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assert_throws("NOT_SUPPORTED_ERR", function() {
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range1.compareBoundaryPoints(how, range2);
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}, "NotSupportedError required if first parameter doesn't convert to 0-3 per WebIDL");
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return;
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}
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// "If context object's root is not the same as sourceRange's
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// root, throw a "WrongDocumentError" exception and terminate
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// these steps."
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if (furthestAncestor(range1.startContainer) != furthestAncestor(range2.startContainer)) {
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assert_throws("WRONG_DOCUMENT_ERR", function() {
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range1.compareBoundaryPoints(how, range2);
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}, "WrongDocumentError required if the ranges don't share a root");
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return;
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}
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// "If how is:
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// START_TO_START:
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// Let this point be the context object's start.
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// Let other point be sourceRange's start.
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// START_TO_END:
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// Let this point be the context object's end.
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// Let other point be sourceRange's start.
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// END_TO_END:
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// Let this point be the context object's end.
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// Let other point be sourceRange's end.
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// END_TO_START:
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// Let this point be the context object's start.
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// Let other point be sourceRange's end."
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var thisPoint = convertedHow == Range.START_TO_START || convertedHow == Range.END_TO_START
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? [range1.startContainer, range1.startOffset]
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: [range1.endContainer, range1.endOffset];
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var otherPoint = convertedHow == Range.START_TO_START || convertedHow == Range.START_TO_END
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? [range2.startContainer, range2.startOffset]
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: [range2.endContainer, range2.endOffset];
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// "If the position of this point relative to other point is
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// before
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// Return −1.
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// equal
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// Return 0.
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// after
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// Return 1."
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var position = getPosition(thisPoint[0], thisPoint[1], otherPoint[0], otherPoint[1]);
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var expected;
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if (position == "before") {
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expected = -1;
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} else if (position == "equal") {
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expected = 0;
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} else if (position == "after") {
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expected = 1;
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}
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assert_equals(range1.compareBoundaryPoints(how, range2), expected,
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"Wrong return value");
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}, i + "," + j + "," + k + ": context range " + range1Desc + ", argument range " + range2Desc + ", how " + format_value(how));
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}
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}
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}
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testDiv.style.display = "none";
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</script>
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