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Move TypedArrayUtils to common

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It belongs here since the renderers will use it
This commit is contained in:
Daniel Imms
2018-11-23 08:08:30 -08:00
parent 4f18717940
commit 1b5ef5d93a
3 changed files with 1 additions and 1 deletions
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src/common/TypedArrayUtils.test.ts
+158
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/**
* Copyright (c) 2018 The xterm.js authors. All rights reserved.
* @license MIT
*/
import { assert } from 'chai';
import { fillFallback } from './TypedArrayUtils';
type TypedArray = Uint8Array | Uint16Array | Uint32Array | Uint8ClampedArray
| Int8Array | Int16Array | Int32Array
| Float32Array | Float64Array;
// we explicitly test against the looping version in the test cases
function loopFill(array: TypedArray, value: number, start: number = 0, end?: number | undefined): TypedArray {
if (start >= array.length) {
return array;
}
start = (array.length + start) % array.length;
if (end === undefined) {
end = array.length;
}
if (end >= array.length) {
end = array.length;
} else {
end = (array.length + end) % array.length;
}
for (let i = start; i < end; ++i) {
array[i] = value;
}
return array;
}
describe('polyfill conformance tests', function(): void {
function deepEquals(a: TypedArray, b: TypedArray): void {
assert.equal(a.length, b.length);
for (let i = 0; i < a.length; ++i) {
assert.equal(a[i], b[i]);
}
}
describe('TypedArray.fill', function(): void {
it('should work with all typed array types', function(): void {
const u81 = new Uint8Array(5);
const u82 = new Uint8Array(5);
deepEquals(fillFallback(u81, 2), u82.fill(2));
deepEquals(fillFallback(u81, -1), u82.fill(-1));
const u161 = new Uint16Array(5);
const u162 = new Uint16Array(5);
deepEquals(fillFallback(u161, 2), u162.fill(2));
deepEquals(fillFallback(u161, 65535), u162.fill(65535));
deepEquals(fillFallback(u161, -1), u162.fill(-1));
const u321 = new Uint32Array(5);
const u322 = new Uint32Array(5);
deepEquals(fillFallback(u321, 2), u322.fill(2));
deepEquals(fillFallback(u321, 65537), u322.fill(65537));
deepEquals(fillFallback(u321, -1), u322.fill(-1));
const i81 = new Int8Array(5);
const i82 = new Int8Array(5);
deepEquals(fillFallback(i81, 2), i82.fill(2));
deepEquals(fillFallback(i81, -1), i82.fill(-1));
const i161 = new Int16Array(5);
const i162 = new Int16Array(5);
deepEquals(fillFallback(i161, 2), i162.fill(2));
deepEquals(fillFallback(i161, 65535), i162.fill(65535));
deepEquals(fillFallback(i161, -1), i162.fill(-1));
const i321 = new Int32Array(5);
const i322 = new Int32Array(5);
deepEquals(fillFallback(i321, 2), i322.fill(2));
deepEquals(fillFallback(i321, 65537), i322.fill(65537));
deepEquals(fillFallback(i321, -1), i322.fill(-1));
const f321 = new Float32Array(5);
const f322 = new Float32Array(5);
deepEquals(fillFallback(f321, 1.2345), f322.fill(1.2345));
const f641 = new Float64Array(5);
const f642 = new Float64Array(5);
deepEquals(fillFallback(f641, 1.2345), f642.fill(1.2345));
const u8Clamped1 = new Uint8ClampedArray(5);
const u8Clamped2 = new Uint8ClampedArray(5);
deepEquals(fillFallback(u8Clamped1, 2), u8Clamped2.fill(2));
deepEquals(fillFallback(u8Clamped1, 257), u8Clamped2.fill(257));
});
it('should work with all typed array types - explicit looping', function(): void {
const u81 = new Uint8Array(5);
const u82 = new Uint8Array(5);
deepEquals(loopFill(u81, 2), u82.fill(2));
deepEquals(loopFill(u81, -1), u82.fill(-1));
const u161 = new Uint16Array(5);
const u162 = new Uint16Array(5);
deepEquals(loopFill(u161, 2), u162.fill(2));
deepEquals(loopFill(u161, 65535), u162.fill(65535));
deepEquals(loopFill(u161, -1), u162.fill(-1));
const u321 = new Uint32Array(5);
const u322 = new Uint32Array(5);
deepEquals(loopFill(u321, 2), u322.fill(2));
deepEquals(loopFill(u321, 65537), u322.fill(65537));
deepEquals(loopFill(u321, -1), u322.fill(-1));
const i81 = new Int8Array(5);
const i82 = new Int8Array(5);
deepEquals(loopFill(i81, 2), i82.fill(2));
deepEquals(loopFill(i81, -1), i82.fill(-1));
const i161 = new Int16Array(5);
const i162 = new Int16Array(5);
deepEquals(loopFill(i161, 2), i162.fill(2));
deepEquals(loopFill(i161, 65535), i162.fill(65535));
deepEquals(loopFill(i161, -1), i162.fill(-1));
const i321 = new Int32Array(5);
const i322 = new Int32Array(5);
deepEquals(loopFill(i321, 2), i322.fill(2));
deepEquals(loopFill(i321, 65537), i322.fill(65537));
deepEquals(loopFill(i321, -1), i322.fill(-1));
const f321 = new Float32Array(5);
const f322 = new Float32Array(5);
deepEquals(loopFill(f321, 1.2345), f322.fill(1.2345));
const f641 = new Float64Array(5);
const f642 = new Float64Array(5);
deepEquals(loopFill(f641, 1.2345), f642.fill(1.2345));
const u8Clamped1 = new Uint8ClampedArray(5);
const u8Clamped2 = new Uint8ClampedArray(5);
deepEquals(loopFill(u8Clamped1, 2), u8Clamped2.fill(2));
deepEquals(loopFill(u8Clamped1, 257), u8Clamped2.fill(257));
});
it('start offset', function(): void {
for (let i = -2; i < 10; ++i) {
const u81 = new Uint8Array(5);
const u82 = new Uint8Array(5);
const u83 = new Uint8Array(5);
deepEquals(fillFallback(u81, 2, i), u83.fill(2, i));
deepEquals(fillFallback(u81, -1, i), u83.fill(-1, i));
deepEquals(loopFill(u82, 2, i), u83.fill(2, i));
deepEquals(loopFill(u82, -1, i), u83.fill(-1, i));
}
});
it('end offset', function(): void {
for (let i = -2; i < 10; ++i) {
const u81 = new Uint8Array(5);
const u82 = new Uint8Array(5);
const u83 = new Uint8Array(5);
deepEquals(fillFallback(u81, 2, 0, i), u83.fill(2, 0, i));
deepEquals(fillFallback(u81, -1, 0, i), u83.fill(-1, 0, i));
deepEquals(loopFill(u82, 2, 0, i), u83.fill(2, 0, i));
deepEquals(loopFill(u82, -1, 0, i), u83.fill(-1, 0, i));
}
});
it('start/end offset', function(): void {
for (let i = -2; i < 10; ++i) {
for (let j = -2; j < 10; ++j) {
const u81 = new Uint8Array(5);
const u82 = new Uint8Array(5);
const u83 = new Uint8Array(5);
deepEquals(fillFallback(u81, 2, i, j), u83.fill(2, i, j));
deepEquals(fillFallback(u81, -1, i, j), u83.fill(-1, i, j));
deepEquals(loopFill(u82, 2, i, j), u83.fill(2, i, j));
deepEquals(loopFill(u82, -1, i, j), u83.fill(-1, i, j));
}
}
});
});
});