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| author | ruki <waruqi@gmail.com> | 2018-11-08 00:38:48 +0800 |
|---|---|---|
| committer | ruki <waruqi@gmail.com> | 2018-11-07 21:53:09 +0800 |
| commit | 26105034da4fcce7ac883c899d781f016559310d (patch) | |
| tree | c459a5dc4e3aa0972d9919033ece511ce76dd129 /node_modules/buffer/test/constructor.js | |
| parent | 2c77f00f1a7ecb6c8192f9c16d3b2001b254a107 (diff) | |
| download | xmake-docs-26105034da4fcce7ac883c899d781f016559310d.tar.gz xmake-docs-26105034da4fcce7ac883c899d781f016559310d.zip | |
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Diffstat (limited to 'node_modules/buffer/test/constructor.js')
| -rw-r--r-- | node_modules/buffer/test/constructor.js | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/node_modules/buffer/test/constructor.js b/node_modules/buffer/test/constructor.js new file mode 100644 index 00000000..cec5cdcb --- /dev/null +++ b/node_modules/buffer/test/constructor.js @@ -0,0 +1,193 @@ +if (process.env.OBJECT_IMPL) global.TYPED_ARRAY_SUPPORT = false +var B = require('../').Buffer +var test = require('tape') + +test('new buffer from array', function (t) { + t.equal( + new B([1, 2, 3]).toString(), + '\u0001\u0002\u0003' + ) + t.end() +}) + +test('new buffer from array w/ negatives', function (t) { + t.equal( + new B([-1, -2, -3]).toString('hex'), + 'fffefd' + ) + t.end() +}) + +test('new buffer from array with mixed signed input', function (t) { + t.equal( + new B([-255, 255, -128, 128, 512, -512, 511, -511]).toString('hex'), + '01ff80800000ff01' + ) + t.end() +}) + +test('new buffer from string', function (t) { + t.equal( + new B('hey', 'utf8').toString(), + 'hey' + ) + t.end() +}) + +test('new buffer from buffer', function (t) { + var b1 = new B('asdf') + var b2 = new B(b1) + t.equal(b1.toString('hex'), b2.toString('hex')) + t.end() +}) + +test('new buffer from ArrayBuffer', function (t) { + if (typeof ArrayBuffer !== 'undefined') { + var arraybuffer = new Uint8Array([0, 1, 2, 3]).buffer + var b = new B(arraybuffer) + t.equal(b.length, 4) + t.equal(b[0], 0) + t.equal(b[1], 1) + t.equal(b[2], 2) + t.equal(b[3], 3) + t.equal(b[4], undefined) + } + t.end() +}) + +test('new buffer from ArrayBuffer, shares memory', function (t) { + if (Buffer.TYPED_ARRAY_SUPPORT) { + var u = new Uint8Array([0, 1, 2, 3]) + var arraybuffer = u.buffer + var b = new B(arraybuffer) + t.equal(b.length, 4) + t.equal(b[0], 0) + t.equal(b[1], 1) + t.equal(b[2], 2) + t.equal(b[3], 3) + t.equal(b[4], undefined) + + // changing the Uint8Array (and thus the ArrayBuffer), changes the Buffer + u[0] = 10 + t.equal(b[0], 10) + u[1] = 11 + t.equal(b[1], 11) + u[2] = 12 + t.equal(b[2], 12) + u[3] = 13 + t.equal(b[3], 13) + } + t.end() +}) + +test('new buffer from Uint8Array', function (t) { + if (typeof Uint8Array !== 'undefined') { + var b1 = new Uint8Array([0, 1, 2, 3]) + var b2 = new B(b1) + t.equal(b1.length, b2.length) + t.equal(b1[0], 0) + t.equal(b1[1], 1) + t.equal(b1[2], 2) + t.equal(b1[3], 3) + t.equal(b1[4], undefined) + } + t.end() +}) + +test('new buffer from Uint16Array', function (t) { + if (typeof Uint16Array !== 'undefined') { + var b1 = new Uint16Array([0, 1, 2, 3]) + var b2 = new B(b1) + t.equal(b1.length, b2.length) + t.equal(b1[0], 0) + t.equal(b1[1], 1) + t.equal(b1[2], 2) + t.equal(b1[3], 3) + t.equal(b1[4], undefined) + } + t.end() +}) + +test('new buffer from Uint32Array', function (t) { + if (typeof Uint32Array !== 'undefined') { + var b1 = new Uint32Array([0, 1, 2, 3]) + var b2 = new B(b1) + t.equal(b1.length, b2.length) + t.equal(b1[0], 0) + t.equal(b1[1], 1) + t.equal(b1[2], 2) + t.equal(b1[3], 3) + t.equal(b1[4], undefined) + } + t.end() +}) + +test('new buffer from Int16Array', function (t) { + if (typeof Int16Array !== 'undefined') { + var b1 = new Int16Array([0, 1, 2, 3]) + var b2 = new B(b1) + t.equal(b1.length, b2.length) + t.equal(b1[0], 0) + t.equal(b1[1], 1) + t.equal(b1[2], 2) + t.equal(b1[3], 3) + t.equal(b1[4], undefined) + } + t.end() +}) + +test('new buffer from Int32Array', function (t) { + if (typeof Int32Array !== 'undefined') { + var b1 = new Int32Array([0, 1, 2, 3]) + var b2 = new B(b1) + t.equal(b1.length, b2.length) + t.equal(b1[0], 0) + t.equal(b1[1], 1) + t.equal(b1[2], 2) + t.equal(b1[3], 3) + t.equal(b1[4], undefined) + } + t.end() +}) + +test('new buffer from Float32Array', function (t) { + if (typeof Float32Array !== 'undefined') { + var b1 = new Float32Array([0, 1, 2, 3]) + var b2 = new B(b1) + t.equal(b1.length, b2.length) + t.equal(b1[0], 0) + t.equal(b1[1], 1) + t.equal(b1[2], 2) + t.equal(b1[3], 3) + t.equal(b1[4], undefined) + } + t.end() +}) + +test('new buffer from Float64Array', function (t) { + if (typeof Float64Array !== 'undefined') { + var b1 = new Float64Array([0, 1, 2, 3]) + var b2 = new B(b1) + t.equal(b1.length, b2.length) + t.equal(b1[0], 0) + t.equal(b1[1], 1) + t.equal(b1[2], 2) + t.equal(b1[3], 3) + t.equal(b1[4], undefined) + } + t.end() +}) + +test('new buffer from buffer.toJSON() output', function (t) { + if (typeof JSON === 'undefined') { + // ie6, ie7 lack support + t.end() + return + } + var buf = new B('test') + var json = JSON.stringify(buf) + var obj = JSON.parse(json) + var copy = new B(obj) + t.ok(buf.equals(copy)) + t.end() +}) |
