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85 lines
1.8 KiB
85 lines
1.8 KiB
if (process.env.OBJECT_IMPL) global.TYPED_ARRAY_SUPPORT = false |
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var B = require('../').Buffer |
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var test = require('tape') |
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test('instanceof Buffer', function (t) { |
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var buf = new B([1, 2]) |
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t.ok(buf instanceof B) |
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t.end() |
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}) |
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test('convert to Uint8Array in modern browsers', function (t) { |
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if (B.TYPED_ARRAY_SUPPORT) { |
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var buf = new B([1, 2]) |
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var uint8array = new Uint8Array(buf.buffer) |
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t.ok(uint8array instanceof Uint8Array) |
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t.equal(uint8array[0], 1) |
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t.equal(uint8array[1], 2) |
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} else { |
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t.pass('object impl: skipping test') |
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} |
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t.end() |
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}) |
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test('indexes from a string', function (t) { |
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var buf = new B('abc') |
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t.equal(buf[0], 97) |
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t.equal(buf[1], 98) |
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t.equal(buf[2], 99) |
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t.end() |
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}) |
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test('indexes from an array', function (t) { |
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var buf = new B([ 97, 98, 99 ]) |
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t.equal(buf[0], 97) |
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t.equal(buf[1], 98) |
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t.equal(buf[2], 99) |
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t.end() |
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}) |
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test('setting index value should modify buffer contents', function (t) { |
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var buf = new B([ 97, 98, 99 ]) |
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t.equal(buf[2], 99) |
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t.equal(buf.toString(), 'abc') |
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buf[2] += 10 |
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t.equal(buf[2], 109) |
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t.equal(buf.toString(), 'abm') |
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t.end() |
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}) |
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test('storing negative number should cast to unsigned', function (t) { |
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var buf = new B(1) |
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if (B.TYPED_ARRAY_SUPPORT) { |
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// This does not work with the object implementation -- nothing we can do! |
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buf[0] = -3 |
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t.equal(buf[0], 253) |
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} |
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buf = new B(1) |
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buf.writeInt8(-3, 0) |
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t.equal(buf[0], 253) |
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t.end() |
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}) |
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test('test that memory is copied from array-like', function (t) { |
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if (B.TYPED_ARRAY_SUPPORT) { |
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var u = new Uint8Array(4) |
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var b = new B(u) |
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b[0] = 1 |
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b[1] = 2 |
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b[2] = 3 |
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b[3] = 4 |
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t.equal(u[0], 0) |
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t.equal(u[1], 0) |
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t.equal(u[2], 0) |
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t.equal(u[3], 0) |
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} else { |
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t.pass('object impl: skipping test') |
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} |
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t.end() |
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})
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