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