Add tests for DataView.prototype.getUint8

test/built-ins/DataView/prototype/getUint8/byteoffset-is-different-integer-throws.js

+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getuint8
+es6id: 24.2.4.10
+description: >
+  Throws a RangeError if numberIndex ≠ getIndex
+info: |
+  24.2.4.10 DataView.prototype.getUint8 ( byteOffset )
+
+  1. Let v be the this value.
+  2. Return ? GetViewValue(v, byteOffset, true, "Uint8").
+
+  24.2.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type )
+
+  ...
+  4. Let numberIndex be ? ToNumber(requestIndex).
+  5. Let getIndex be ToInteger(numberIndex).
+  6. If numberIndex ≠ getIndex or getIndex < 0, throw a RangeError exception.
+  ...
+---*/
+
+var buffer = new ArrayBuffer(12);
+var sample = new DataView(buffer, 0);
+
+assert.throws(RangeError, function() {
+  sample.getUint8();
+}, "no args");
+
+assert.throws(RangeError, function() {
+  sample.getUint8(undefined);
+}, "undefined");
+
+assert.throws(RangeError, function() {
+  sample.getUint8(1.1);
+}, "floating number");
+
+assert.throws(RangeError, function() {
+  sample.getUint8(0.1);
+}, "0.1");
+
+assert.throws(RangeError, function() {
+  sample.getUint8(NaN);
+}, "NaN");
+
+assert.throws(RangeError, function() {
+  sample.getUint8(-0.1);
+}, "-0.1");
+
+assert.throws(RangeError, function() {
+  sample.getUint8(-1.1);
+}, "-1.1");

test/built-ins/DataView/prototype/getUint8/byteoffset-is-negative-throws.js

+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getuint8
+es6id: 24.2.4.10
+description: >
+  Throws a RangeError if getIndex < 0
+info: |
+  24.2.4.10 DataView.prototype.getUint8 ( byteOffset )
+
+  1. Let v be the this value.
+  2. Return ? GetViewValue(v, byteOffset, true, "Uint8").
+
+  24.2.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type )
+
+  ...
+  4. Let numberIndex be ? ToNumber(requestIndex).
+  5. Let getIndex be ToInteger(numberIndex).
+  6. If numberIndex ≠ getIndex or getIndex < 0, throw a RangeError exception.
+  ...
+---*/
+
+var buffer = new ArrayBuffer(12);
+var sample = new DataView(buffer, 0);
+
+assert.throws(RangeError, function() {
+  sample.getUint8(-1);
+}, "-1");
+
+assert.throws(RangeError, function() {
+  sample.getUint8(-Infinity);
+}, "-Infinity");

test/built-ins/DataView/prototype/getUint8/detached-buffer-after-integer-byteoffset.js

+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getuint8
+es6id: 24.2.4.10
+description: >
+  Detached buffer is checked after checking If numberIndex ≠ getIndex or
+  getIndex < 0,
+info: |
+  24.2.4.10 DataView.prototype.getUint8 ( byteOffset )
+
+  1. Let v be the this value.
+  2. Return ? GetViewValue(v, byteOffset, true, "Uint8").
+
+  24.2.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type )
+
+  ...
+  6. If numberIndex ≠ getIndex or getIndex < 0, throw a RangeError exception.
+  ...
+  8. Let buffer be the value of view's [[ViewedArrayBuffer]] internal slot.
+  9. If IsDetachedBuffer(buffer) is true, throw a TypeError exception.
+  ...
+includes: [detachArrayBuffer.js]
+---*/
+
+var buffer = new ArrayBuffer(8);
+var sample = new DataView(buffer, 0);
+
+$DETACHBUFFER(buffer);
+assert.throws(RangeError, function() {
+  sample.getUint8(1.1);
+});
+
+assert.throws(RangeError, function() {
+  sample.getUint8(-1);
+});

test/built-ins/DataView/prototype/getUint8/detached-buffer-before-outofrange-byteoffset.js

+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getuint8
+es6id: 24.2.4.10
+description: >
+  Detached buffer is checked before out of range byteOffset's value
+info: |
+  24.2.4.10 DataView.prototype.getUint8 ( byteOffset )
+
+  1. Let v be the this value.
+  2. Return ? GetViewValue(v, byteOffset, true, "Uint8").
+
+  24.2.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type )
+
+  ...
+  8. Let buffer be the value of view's [[ViewedArrayBuffer]] internal slot.
+  9. If IsDetachedBuffer(buffer) is true, throw a TypeError exception.
+  ...
+  13. If getIndex + elementSize > viewSize, throw a RangeError exception.
+  ...
+includes: [detachArrayBuffer.js]
+---*/
+
+var sample;
+var buffer = new ArrayBuffer(12);
+
+sample = new DataView(buffer, 0);
+
+$DETACHBUFFER(buffer);
+
+assert.throws(TypeError, function() {
+  sample.getUint8(Infinity);
+}, "Infinity");
+
+assert.throws(TypeError, function() {
+  sample.getUint8(13);
+}, "13");

test/built-ins/DataView/prototype/getUint8/detached-buffer.js

+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getuint8
+es6id: 24.2.4.10
+description: >
+  Throws a TypeError if buffer is detached
+info: |
+  24.2.4.10 DataView.prototype.getUint8 ( byteOffset )
+
+  1. Let v be the this value.
+  2. Return ? GetViewValue(v, byteOffset, true, "Uint8").
+
+  24.2.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type )
+
+  ...
+  8. Let buffer be the value of view's [[ViewedArrayBuffer]] internal slot.
+  9. If IsDetachedBuffer(buffer) is true, throw a TypeError exception.
+  ...
+includes: [detachArrayBuffer.js]
+---*/
+
+var buffer = new ArrayBuffer(1);
+var sample = new DataView(buffer, 0);
+
+$DETACHBUFFER(buffer);
+assert.throws(TypeError, function() {
+  sample.getUint8(0);
+});

test/built-ins/DataView/prototype/getUint8/index-is-out-of-range.js

+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getuint8
+es6id: 24.2.4.10
+description: >
+  Throws a RangeError if getIndex + elementSize > viewSize
+info: |
+  24.2.4.10 DataView.prototype.getUint8 ( byteOffset )
+
+  1. Let v be the this value.
+  2. Return ? GetViewValue(v, byteOffset, true, "Uint8").
+
+  24.2.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type )
+
+  ...
+  10. Let viewOffset be the value of view's [[ByteOffset]] internal slot.
+  11. Let viewSize be the value of view's [[ByteLength]] internal slot.
+  12. Let elementSize be the Number value of the Element Size value specified in
+  Table 50 for Element Type type.
+  13. If getIndex + elementSize > viewSize, throw a RangeError exception.
+  ...
+---*/
+
+var sample;
+var buffer = new ArrayBuffer(12);
+
+sample = new DataView(buffer, 0);
+
+assert.throws(RangeError, function() {
+  sample.getUint8(Infinity);
+}, "getIndex == Infinity");
+
+assert.throws(RangeError, function() {
+  sample.getUint8(13);
+}, "13 + 1 > 12");
+
+assert.throws(RangeError, function() {
+  sample.getUint8(12);
+}, "12 + 1 > 12");
+
+sample = new DataView(buffer, 11);
+assert.throws(RangeError, function() {
+  sample.getUint8(1);
+}, "1 + 1 > 1 (offset)");
+
+sample = new DataView(buffer, 0, 1);
+assert.throws(RangeError, function() {
+  sample.getUint8(1);
+}, "1 + 1 > 1 (length)");
+
+sample = new DataView(buffer, 4, 1);
+assert.throws(RangeError, function() {
+  sample.getUint8(1);
+}, "1 + 1 > 1 (offset+length)");
+
+sample = new DataView(buffer, 4, 0);
+assert.throws(RangeError, function() {
+  sample.getUint8(0);
+}, "0 + 1 > 0 (offset+length)");

test/built-ins/DataView/prototype/getUint8/return-abrupt-from-tonumber-byteoffset-symbol.js

+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getuint8
+es6id: 24.2.4.10
+description: >
+  Return abrupt from ToNumber(symbol byteOffset)
+info: |
+  24.2.4.10 DataView.prototype.getUint8 ( byteOffset )
+
+  1. Let v be the this value.
+  2. Return ? GetViewValue(v, byteOffset, true, "Uint8").
+
+  24.2.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type )
+
+  ...
+  4. Let numberIndex be ? ToNumber(requestIndex).
+  ...
+features: [Symbol]
+---*/
+
+var buffer = new ArrayBuffer(1);
+var sample = new DataView(buffer, 0);
+
+var s = Symbol("1");
+
+assert.throws(TypeError, function() {
+  sample.getUint8(s);
+});

test/built-ins/DataView/prototype/getUint8/return-abrupt-from-tonumber-byteoffset.js

+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getuint8
+es6id: 24.2.4.10
+description: >
+  Return abrupt from ToNumber(byteOffset)
+info: |
+  24.2.4.10 DataView.prototype.getUint8 ( byteOffset )
+
+  1. Let v be the this value.
+  2. Return ? GetViewValue(v, byteOffset, true, "Uint8").
+
+  24.2.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type )
+
+  ...
+  4. Let numberIndex be ? ToNumber(requestIndex).
+  ...
+---*/
+
+var buffer = new ArrayBuffer(1);
+var sample = new DataView(buffer, 0);
+
+var bo1 = {
+  valueOf: function() {
+    throw new Test262Error();
+  }
+};
+
+var bo2 = {
+  toString: function() {
+    throw new Test262Error();
+  }
+};
+
+assert.throws(Test262Error, function() {
+  sample.getUint8(bo1);
+}, "valueOf");
+
+assert.throws(Test262Error, function() {
+  sample.getUint8(bo2);
+}, "toString");

test/built-ins/DataView/prototype/getUint8/return-value-clean-arraybuffer.js

+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getuint8
+es6id: 24.2.4.10
+description: >
+  Return value from Buffer using a clean ArrayBuffer
+info: |
+  24.2.4.10 DataView.prototype.getUint8 ( byteOffset )
+
+  1. Let v be the this value.
+  2. Return ? GetViewValue(v, byteOffset, true, "Uint8").
+
+  24.2.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type )
+
+  ...
+  14. Let bufferIndex be getIndex + viewOffset.
+  15. Return GetValueFromBuffer(buffer, bufferIndex, type, isLittleEndian).
+  ...
+
+  24.1.1.5 GetValueFromBuffer ( arrayBuffer, byteIndex, type [ , isLittleEndian
+  ] )
+
+  ...
+  8. If isLittleEndian is false, reverse the order of the elements of rawValue.
+  ...
+---*/
+
+var buffer = new ArrayBuffer(4);
+var sample = new DataView(buffer, 0);
+
+assert.sameValue(sample.getUint8(0), 0, "sample.getUint8(0)");
+assert.sameValue(sample.getUint8(1), 0, "sample.getUint8(1)");
+assert.sameValue(sample.getUint8(2), 0, "sample.getUint8(2)");
+assert.sameValue(sample.getUint8(3), 0, "sample.getUint8(3)");

test/built-ins/DataView/prototype/getUint8/return-values-coerced-byteoffset.js

+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getuint8
+es6id: 24.2.4.10
+description: >
+  Return values using coerced ToInteger byteOffset values
+info: |
+  24.2.4.10 DataView.prototype.getUint8 ( byteOffset )
+
+  1. Let v be the this value.
+  2. Return ? GetViewValue(v, byteOffset, true, "Uint8").
+
+  24.2.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type )
+
+  ...
+  14. Let bufferIndex be getIndex + viewOffset.
+  15. Return GetValueFromBuffer(buffer, bufferIndex, type, isLittleEndian).
+  ...
+
+  24.1.1.5 GetValueFromBuffer ( arrayBuffer, byteIndex, type [ , isLittleEndian
+  ] )
+
+  ...
+  8. If isLittleEndian is false, reverse the order of the elements of rawValue.
+  ...
+features: [DataView.prototype.setUint8]
+---*/
+
+var buffer = new ArrayBuffer(2);
+var sample = new DataView(buffer, 0);
+
+sample.setUint8(0, 39);
+sample.setUint8(1, 42);
+
+assert.sameValue(sample.getUint8(""), 39, "''");
+
+assert.sameValue(sample.getUint8("0"), 39, "'0'");
+
+assert.sameValue(sample.getUint8("1"), 42, "'1'");
+
+var obj1 = {
+  valueOf: function() {
+    return 1;
+  }
+};
+assert.sameValue(sample.getUint8(obj1), 42, "{}.valueOf");
+
+var obj2 = {
+  toString: function() {
+    return 1;
+  }
+};
+assert.sameValue(sample.getUint8(obj2), 42, "{}.toString");
+
+assert.sameValue(sample.getUint8(true), 42, "true");
+
+assert.sameValue(sample.getUint8(false), 39, "false");
+
+assert.sameValue(sample.getUint8(null), 39, "null");

test/built-ins/DataView/prototype/getUint8/return-values-custom-offset.js

+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getuint8
+es6id: 24.2.4.10
+description: >
+  Return values from Buffer using a custom offset
+info: |
+  24.2.4.10 DataView.prototype.getUint8 ( byteOffset )
+
+  1. Let v be the this value.
+  2. Return ? GetViewValue(v, byteOffset, true, "Uint8").
+
+  24.2.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type )
+
+  ...
+  14. Let bufferIndex be getIndex + viewOffset.
+  15. Return GetValueFromBuffer(buffer, bufferIndex, type, isLittleEndian).
+  ...
+
+  24.1.1.5 GetValueFromBuffer ( arrayBuffer, byteIndex, type [ , isLittleEndian
+  ] )
+
+  ...
+  8. If isLittleEndian is false, reverse the order of the elements of rawValue.
+  ...
+features: [DataView.prototype.setUint8]
+---*/
+
+var buffer = new ArrayBuffer(8);
+var sample = new DataView(buffer, 0);
+
+sample.setUint8(0, 7);
+sample.setUint8(1, 7);
+sample.setUint8(2, 7);
+sample.setUint8(3, 7);
+sample.setUint8(4, 1);
+sample.setUint8(5, 127);
+sample.setUint8(6, 128);
+sample.setUint8(7, 255);
+
+sample = new DataView(buffer, 4);
+
+assert.sameValue(sample.getUint8(0), 1);
+assert.sameValue(sample.getUint8(1), 127);
+assert.sameValue(sample.getUint8(2), 128);
+assert.sameValue(sample.getUint8(3), 255);

test/built-ins/DataView/prototype/getUint8/return-values.js

+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getuint8
+es6id: 24.2.4.10
+description: >
+  Return values from Buffer
+info: |
+  24.2.4.10 DataView.prototype.getUint8 ( byteOffset )
+
+  1. Let v be the this value.
+  2. Return ? GetViewValue(v, byteOffset, true, "Uint8").
+
+  24.2.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type )
+
+  ...
+  14. Let bufferIndex be getIndex + viewOffset.
+  15. Return GetValueFromBuffer(buffer, bufferIndex, type, isLittleEndian).
+  ...
+
+  24.1.1.5 GetValueFromBuffer ( arrayBuffer, byteIndex, type [ , isLittleEndian
+  ] )
+
+  ...
+  8. If isLittleEndian is false, reverse the order of the elements of rawValue.
+  ...
+features: [DataView.prototype.setUint8]
+---*/
+
+var buffer = new ArrayBuffer(4);
+var sample = new DataView(buffer, 0);
+
+sample.setUint8(0, 127);
+sample.setUint8(1, 255);
+sample.setUint8(2, 0);
+sample.setUint8(3, 1);
+
+assert.sameValue(sample.getUint8(0), 127);
+assert.sameValue(sample.getUint8(1), 255);
+assert.sameValue(sample.getUint8(2), 0);
+assert.sameValue(sample.getUint8(3), 1);

test/built-ins/DataView/prototype/getUint8/this-has-no-dataview-internal.js

+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getuint8
+es6id: 24.2.4.10
+description: >
+  Throws a TypeError if this does not have a [[DataView]] internal slot
+info: |
+  24.2.4.10 DataView.prototype.getUint8 ( byteOffset )
+
+  1. Let v be the this value.
+  2. Return ? GetViewValue(v, byteOffset, true, "Uint8").
+
+  24.2.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type )
+
+  1. If Type(view) is not Object, throw a TypeError exception.
+  2. If view does not have a [[DataView]] internal slot, throw a TypeError
+  exception.
+  ...
+features: [Int8Array]
+---*/
+
+var getUint8 = DataView.prototype.getUint8;
+
+assert.throws(TypeError, function() {
+  getUint8.call({});
+}, "{}");
+
+assert.throws(TypeError, function() {
+  getUint8.call([]);
+}, "[]");
+
+var ab = new ArrayBuffer(1);
+assert.throws(TypeError, function() {
+  getUint8.call(ab);
+}, "ArrayBuffer");
+
+var ta = new Int8Array();
+assert.throws(TypeError, function() {
+  getUint8.call(ta);
+}, "TypedArray");

test/built-ins/DataView/prototype/getUint8/this-is-not-object.js

+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview.prototype.getuint8
+es6id: 24.2.4.10
+description: Throws a TypeError if this is not Object
+info: |
+  24.2.4.10 DataView.prototype.getUint8 ( byteOffset )
+
+  1. Let v be the this value.
+  2. Return ? GetViewValue(v, byteOffset, true, "Uint8").
+
+  24.2.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type )
+
+  1. If Type(view) is not Object, throw a TypeError exception.
+  ...
+features: [Symbol]
+---*/
+
+var getUint8 = DataView.prototype.getUint8;
+
+assert.throws(TypeError, function() {
+  getUint8.call(undefined);
+}, "undefined");
+
+assert.throws(TypeError, function() {
+  getUint8.call(null);
+}, "null");
+
+assert.throws(TypeError, function() {
+  getUint8.call(1);
+}, "1");
+
+assert.throws(TypeError, function() {
+  getUint8.call("string");
+}, "string");
+
+assert.throws(TypeError, function() {
+  getUint8.call(true);
+}, "true");
+
+assert.throws(TypeError, function() {
+  getUint8.call(false);
+}, "false");
+
+var s = Symbol("1");
+assert.throws(TypeError, function() {
+  getUint8.call(s);
+}, "symbol");