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author | 2020-11-16 00:10:28 +0100 | |
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committer | 2020-11-16 00:10:28 +0100 | |
commit | e06ec920f7a5d784e674c4c4b4e6d1da3dc7391d (patch) | |
tree | 55713f725f77b44ebfec86e4eec3ce33e71458ca /node_modules/to-arraybuffer/test.js | |
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Diffstat (limited to 'node_modules/to-arraybuffer/test.js')
-rw-r--r-- | node_modules/to-arraybuffer/test.js | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/node_modules/to-arraybuffer/test.js b/node_modules/to-arraybuffer/test.js new file mode 100644 index 0000000..1814ae3 --- /dev/null +++ b/node_modules/to-arraybuffer/test.js @@ -0,0 +1,57 @@ +var Buffer = require('buffer').Buffer +var test = require('tape') + +var toArrayBuffer = require('.') + +function elementsEqual (ab, buffer) { + var view = new Uint8Array(ab) + for (var i = 0; i < view.length; i++) { + if (view[i] !== buffer[i]) { + return false + } + } + return true +} + +test('Basic behavior', function (t) { + var buf = new Buffer(10) + for (var i = 0; i < 10; i++) { + buf[i] = i + } + + var ab = toArrayBuffer(buf) + + t.equals(ab.byteLength, 10, 'correct length') + t.ok(elementsEqual(ab, buf), 'elements equal') + t.end() +}) + +test('Behavior when input is a subarray 1', function (t) { + var origBuf = new Buffer(10) + for (var i = 0; i < 10; i++) { + origBuf[i] = i + } + var buf = origBuf.slice(1) + + var ab = toArrayBuffer(buf) + + t.equals(ab.byteLength, 9, 'correct length') + t.ok(elementsEqual(ab, buf), 'elements equal') + t.notOk(ab === buf.buffer, 'the underlying ArrayBuffer is not returned when incorrect') + t.end() +}) + +test('Behavior when input is a subarray 2', function (t) { + var origBuf = new Buffer(10) + for (var i = 0; i < 10; i++) { + origBuf[i] = i + } + var buf = origBuf.slice(0, 9) + + var ab = toArrayBuffer(buf) + + t.equals(ab.byteLength, 9, 'correct length') + t.ok(elementsEqual(ab, buf), 'elements equal') + t.notOk(ab === buf.buffer, 'the underlying ArrayBuffer is not returned when incorrect') + t.end() +}) |