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authorGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
committerGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
commite06ec920f7a5d784e674c4c4b4e6d1da3dc7391d (patch)
tree55713f725f77b44ebfec86e4eec3ce33e71458ca /node_modules/to-arraybuffer/test.js
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-rw-r--r--node_modules/to-arraybuffer/test.js57
1 files changed, 57 insertions, 0 deletions
diff --git a/node_modules/to-arraybuffer/test.js b/node_modules/to-arraybuffer/test.js
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+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()
+})