362 lines
12 KiB
HTML
362 lines
12 KiB
HTML
<html>
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<head>
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<script src="../../../resources/js-test.js"></script>
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</head>
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<body>
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<div id="description"></div>
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<div id="console"></div>
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<script>
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description("Test DataView.");
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var intArray1 = [0, 1, 2, 3, 100, 101, 102, 103, 128, 129, 130, 131, 252, 253, 254, 255];
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var intArray2 = [31, 32, 33, 0, 1, 2, 3, 100, 101, 102, 103, 128, 129, 130, 131, 252, 253, 254, 255];
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var emptyArray = [204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204, 204];
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var arayBuffer = null;
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var view = null;
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var viewStart = 0;
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var viewLength = 0;
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function getElementSize(func)
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{
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switch (func) {
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case "Int8":
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case "Uint8":
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return 1;
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case "Int16":
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case "Uint16":
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return 2;
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case "Int32":
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case "Uint32":
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case "Float32":
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return 4;
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case "Float64":
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return 8;
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default:
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debug("Should not reached");
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}
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}
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function checkGet(func, index, expected, littleEndian)
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{
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var expr = "view.get" + func + "(" + index;
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if (littleEndian != undefined) {
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expr += ", ";
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expr += littleEndian ? "true" : "false";
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}
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expr += ")";
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if (index >= 0 && index + getElementSize(func) - 1 < view.byteLength)
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shouldBe(expr, expected);
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else
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shouldThrow(expr);
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}
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function checkSet(func, index, value, littleEndian)
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{
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var expr = "view.set" + func + "(" + index + ", " + value;
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if (littleEndian != undefined) {
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expr += ", ";
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expr += littleEndian ? "true" : "false";
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}
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expr += ")";
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if (index >= 0 && index + getElementSize(func) - 1 < view.byteLength) {
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shouldBeUndefined(expr);
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checkGet(func, index, value, littleEndian);
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} else
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shouldThrow(expr);
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}
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function test(isTestingGet, func, index, value, littleEndian)
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{
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if (isTestingGet)
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checkGet(func, index, value, littleEndian);
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else
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checkSet(func, index, value, littleEndian);
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}
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function createDataView(array, frontPaddingNum, littleEndian, start, length)
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{
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if (!littleEndian)
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array.reverse();
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var paddingArray = new Array(frontPaddingNum);
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arrayBuffer = (new Uint8Array(paddingArray.concat(array))).buffer;
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viewStart = (start != undefined) ? start : 0;
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viewLength = (length != undefined) ? length : arrayBuffer.byteLength - viewStart;
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view = new DataView(arrayBuffer, viewStart, viewLength);
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if (!littleEndian)
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array.reverse(); // restore the array.
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}
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function runIntegerTestCases(isTestingGet, array, start, length)
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{
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createDataView(array, 0, true, start, length);
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test(isTestingGet, "Int8", 0, "0");
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test(isTestingGet, "Int8", 8, "-128");
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test(isTestingGet, "Int8", 15, "-1");
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test(isTestingGet, "Uint8", 0, "0");
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test(isTestingGet, "Uint8", 8, "128");
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test(isTestingGet, "Uint8", 15, "255");
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// Little endian.
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test(isTestingGet, "Int16", 0, "256", true);
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test(isTestingGet, "Int16", 5, "26213", true);
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test(isTestingGet, "Int16", 9, "-32127", true);
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test(isTestingGet, "Int16", 14, "-2", true);
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// Big endian.
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test(isTestingGet, "Int16", 0, "1");
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test(isTestingGet, "Int16", 5, "25958");
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test(isTestingGet, "Int16", 9, "-32382");
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test(isTestingGet, "Int16", 14, "-257");
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// Little endian.
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test(isTestingGet, "Uint16", 0, "256", true);
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test(isTestingGet, "Uint16", 5, "26213", true);
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test(isTestingGet, "Uint16", 9, "33409", true);
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test(isTestingGet, "Uint16", 14, "65534", true);
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// Big endian.
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test(isTestingGet, "Uint16", 0, "1");
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test(isTestingGet, "Uint16", 5, "25958");
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test(isTestingGet, "Uint16", 9, "33154");
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test(isTestingGet, "Uint16", 14, "65279");
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// Little endian.
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test(isTestingGet, "Int32", 0, "50462976", true);
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test(isTestingGet, "Int32", 3, "1717920771", true);
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test(isTestingGet, "Int32", 6, "-2122291354", true);
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test(isTestingGet, "Int32", 9, "-58490239", true);
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test(isTestingGet, "Int32", 12, "-66052", true);
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// Big endian.
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test(isTestingGet, "Int32", 0, "66051");
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test(isTestingGet, "Int32", 3, "56911206");
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test(isTestingGet, "Int32", 6, "1718059137");
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test(isTestingGet, "Int32", 9, "-2122152964");
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test(isTestingGet, "Int32", 12, "-50462977");
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// Little endian.
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test(isTestingGet, "Uint32", 0, "50462976", true);
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test(isTestingGet, "Uint32", 3, "1717920771", true);
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test(isTestingGet, "Uint32", 6, "2172675942", true);
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test(isTestingGet, "Uint32", 9, "4236477057", true);
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test(isTestingGet, "Uint32", 12, "4294901244", true);
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// Big endian.
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test(isTestingGet, "Uint32", 0, "66051");
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test(isTestingGet, "Uint32", 3, "56911206");
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test(isTestingGet, "Uint32", 6, "1718059137");
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test(isTestingGet, "Uint32", 9, "2172814332");
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test(isTestingGet, "Uint32", 12, "4244504319");
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}
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function testFloat(isTestingGet, func, array, start, expected)
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{
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// Little endian.
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createDataView(array, 0, true, start);
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test(isTestingGet, func, 0, expected, true);
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createDataView(array, 3, true, start);
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test(isTestingGet, func, 3, expected, true);
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createDataView(array, 7, true, start);
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test(isTestingGet, func, 7, expected, true);
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createDataView(array, 10, true, start);
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test(isTestingGet, func, 10, expected, true);
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// Big endian.
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createDataView(array, 0, false);
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test(isTestingGet, func, 0, expected, false);
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createDataView(array, 3, false);
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test(isTestingGet, func, 3, expected, false);
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createDataView(array, 7, false);
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test(isTestingGet, func, 7, expected, false);
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createDataView(array, 10, false);
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test(isTestingGet, func, 10, expected, false);
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}
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function runFloatTestCases(isTestingGet, start)
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{
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testFloat(isTestingGet, "Float32", isTestingGet ? [0, 0, 32, 65] : emptyArray, start, "10");
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testFloat(isTestingGet, "Float32", isTestingGet ? [164, 112, 157, 63] : emptyArray, start, "1.2300000190734863");
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testFloat(isTestingGet, "Float32", isTestingGet ? [95, 53, 50, 199] : emptyArray, start, "-45621.37109375");
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testFloat(isTestingGet, "Float32", isTestingGet ? [255, 255, 255, 127] : emptyArray, start, "NaN");
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testFloat(isTestingGet, "Float32", isTestingGet ? [255, 255, 255, 255] : emptyArray, start, "-NaN");
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testFloat(isTestingGet, "Float64", isTestingGet ? [0, 0, 0, 0, 0, 0, 36, 64] : emptyArray, start, "10");
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testFloat(isTestingGet, "Float64", isTestingGet ? [174, 71, 225, 122, 20, 174, 243, 63] : emptyArray, start, "1.23");
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testFloat(isTestingGet, "Float64", isTestingGet ? [181, 55, 248, 30, 242, 179, 87, 193] : emptyArray, start, "-6213576.4839");
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testFloat(isTestingGet, "Float64", isTestingGet ? [255, 255, 255, 255, 255, 255, 255, 127] : emptyArray, start, "NaN");
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testFloat(isTestingGet, "Float64", isTestingGet ? [255, 255, 255, 255, 255, 255, 255, 255] : emptyArray, start, "-NaN");
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}
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function runNegativeIndexTests(isTestingGet)
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{
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createDataView(intArray1, 0, true, 0, 16);
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test(isTestingGet, "Int8", -1, "0");
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test(isTestingGet, "Int8", -2, "0");
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test(isTestingGet, "Uint8", -1, "0");
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test(isTestingGet, "Uint8", -2, "0");
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test(isTestingGet, "Int16", -1, "0");
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test(isTestingGet, "Int16", -2, "0");
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test(isTestingGet, "Int16", -3, "0");
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test(isTestingGet, "Uint16", -1, "0");
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test(isTestingGet, "Uint16", -2, "0");
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test(isTestingGet, "Uint16", -3, "0");
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test(isTestingGet, "Int32", -1, "0");
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test(isTestingGet, "Int32", -3, "0");
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test(isTestingGet, "Int32", -5, "0");
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test(isTestingGet, "Uint32", -1, "0");
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test(isTestingGet, "Uint32", -3, "0");
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test(isTestingGet, "Uint32", -5, "0");
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createDataView([0, 0, 0, 0, 0, 0, 36, 64], 0, true, 0, 8);
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test(isTestingGet, "Float32", -1, "0");
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test(isTestingGet, "Float32", -3, "0");
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test(isTestingGet, "Float32", -5, "0");
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test(isTestingGet, "Float64", -1, "0");
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test(isTestingGet, "Float64", -5, "0");
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test(isTestingGet, "Float64", -9, "0");
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}
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function runConstructorTests()
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{
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arrayBuffer = (new Uint8Array([1, 2])).buffer;
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debug("");
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debug("Test for constructor not called as a function");
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var expr = "DataView(new ArrayBuffer)";
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// Use try/catch instead of calling shouldThrow to avoid different exception message being reported from different platform.
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try {
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eval(expr);
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testFailed(expr + " does not throw exception");
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} catch (e) {
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testPassed(expr + " threw exception");
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}
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debug("");
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debug("Test for constructor taking 1 argument");
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shouldBeDefined("view = new DataView(arrayBuffer)");
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shouldBe("view.byteOffset", "0");
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shouldBe("view.byteLength", "2");
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debug("");
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debug("Test for constructor taking 2 arguments");
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shouldBeDefined("view = new DataView(arrayBuffer, 1)");
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shouldBe("view.byteOffset", "1");
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shouldBe("view.byteLength", "1");
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debug("");
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debug("Test for constructor taking 3 arguments");
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shouldBeDefined("view = new DataView(arrayBuffer, 0, 1)");
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shouldBe("view.byteOffset", "0");
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shouldBe("view.byteLength", "1");
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debug("");
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debug("Test for constructor throwing exception");
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shouldThrow("view = new DataView(arrayBuffer, 0, 3)");
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shouldThrow("view = new DataView(arrayBuffer, 1, 2)");
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shouldThrow("view = new DataView(arrayBuffer, 2, 1)");
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debug("");
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debug("Test for constructor throwing wrong byteoffset exception");
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shouldThrow("view = new Int32Array(new ArrayBuffer(100), 1, 1)");
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debug("");
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debug("Test for constructor wrong length exception takes precedence over wrong byteoffset exception");
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shouldThrow("view = new Int32Array(new ArrayBuffer(100), 1, 101)");
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}
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function runGetTests()
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{
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debug("");
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debug("Test for get methods that work");
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runIntegerTestCases(true, intArray1, 0, 16);
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runFloatTestCases(true, 0);
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debug("");
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debug("Test for get methods that might read beyond range");
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runIntegerTestCases(true, intArray2, 3, 2);
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runFloatTestCases(true, 3);
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debug("");
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debug("Test for get methods that read from negative index");
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runNegativeIndexTests(true);
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debug("");
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debug("Test for missing arguments passed to get methods");
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view = new DataView((new Uint8Array([1, 2, 3, 4, 5, 6, 7, 8])).buffer);
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shouldNotThrow("view.getInt8()");
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shouldNotThrow("view.getUint8()");
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shouldNotThrow("view.getInt16()");
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shouldNotThrow("view.getUint16()");
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shouldNotThrow("view.getInt32()");
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shouldNotThrow("view.getUint32()");
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shouldNotThrow("view.getFloat32()");
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shouldNotThrow("view.getFloat64()");
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}
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function runSetTests()
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{
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debug("");
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debug("Test for set methods that work");
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runIntegerTestCases(false, emptyArray, 0, 16);
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runFloatTestCases(false);
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debug("");
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debug("Test for set methods that might write beyond the range");
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runIntegerTestCases(false, emptyArray, 3, 2);
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runFloatTestCases(false, 7);
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debug("");
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debug("Test for set methods that write to negative index");
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runNegativeIndexTests(false);
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debug("");
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debug("Test for missing arguments passed to set methods");
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view = new DataView((new Uint8Array([1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8])).buffer);
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shouldNotThrow("view.setInt8()");
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shouldNotThrow("view.setUint8()");
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shouldNotThrow("view.setInt16()");
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shouldNotThrow("view.setUint16()");
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shouldNotThrow("view.setInt32()");
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shouldNotThrow("view.setUint32()");
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shouldNotThrow("view.setFloat32()");
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shouldNotThrow("view.setFloat64()");
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shouldNotThrow("view.setInt8(1)");
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shouldNotThrow("view.setUint8(1)");
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shouldNotThrow("view.setInt16(1)");
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shouldNotThrow("view.setUint16(1)");
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shouldNotThrow("view.setInt32(1)");
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shouldNotThrow("view.setUint32(1)");
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shouldNotThrow("view.setFloat32(1)");
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shouldNotThrow("view.setFloat64(1)");
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}
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function runIndexingTests()
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{
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debug("");
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debug("Test for indexing that should not work");
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view = new DataView((new Uint8Array([1, 2])).buffer);
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shouldBeUndefined("view[0]");
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shouldBeDefined("view[0] = 3");
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shouldBe("view.getUint8(0)", "1");
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}
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runConstructorTests();
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runGetTests();
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runSetTests();
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runIndexingTests();
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</script>
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</body>
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</html>
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