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57 lines
1.3 KiB
57 lines
1.3 KiB
var Buffer = require('buffer').Buffer |
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var test = require('tape') |
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var toArrayBuffer = require('.') |
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function elementsEqual (ab, buffer) { |
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var view = new Uint8Array(ab) |
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for (var i = 0; i < view.length; i++) { |
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if (view[i] !== buffer[i]) { |
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return false |
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} |
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} |
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return true |
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} |
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test('Basic behavior', function (t) { |
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var buf = new Buffer(10) |
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for (var i = 0; i < 10; i++) { |
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buf[i] = i |
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} |
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var ab = toArrayBuffer(buf) |
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t.equals(ab.byteLength, 10, 'correct length') |
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t.ok(elementsEqual(ab, buf), 'elements equal') |
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t.end() |
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}) |
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test('Behavior when input is a subarray 1', function (t) { |
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var origBuf = new Buffer(10) |
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for (var i = 0; i < 10; i++) { |
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origBuf[i] = i |
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} |
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var buf = origBuf.slice(1) |
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var ab = toArrayBuffer(buf) |
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t.equals(ab.byteLength, 9, 'correct length') |
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t.ok(elementsEqual(ab, buf), 'elements equal') |
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t.notOk(ab === buf.buffer, 'the underlying ArrayBuffer is not returned when incorrect') |
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t.end() |
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}) |
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test('Behavior when input is a subarray 2', function (t) { |
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var origBuf = new Buffer(10) |
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for (var i = 0; i < 10; i++) { |
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origBuf[i] = i |
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} |
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var buf = origBuf.slice(0, 9) |
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var ab = toArrayBuffer(buf) |
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t.equals(ab.byteLength, 9, 'correct length') |
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t.ok(elementsEqual(ab, buf), 'elements equal') |
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t.notOk(ab === buf.buffer, 'the underlying ArrayBuffer is not returned when incorrect') |
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t.end() |
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})
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