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test: add property for RangeError in test-buffer-copy
PR-URL: #23968 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
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test/parallel/test-buffer-copy.js

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Original file line numberDiff line numberDiff line change
@@ -1,10 +1,17 @@
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'use strict';
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require('../common');
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const common = require('../common');
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const assert = require('assert');
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const b = Buffer.allocUnsafe(1024);
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const c = Buffer.allocUnsafe(512);
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const errorProperty = {
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code: 'ERR_OUT_OF_RANGE',
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type: RangeError,
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message: 'Index out of range'
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};
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let cntr = 0;
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{
@@ -96,9 +103,9 @@ bb.fill('hello crazy world');
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b.copy(c, 0, 100, 10);
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// copy throws at negative sourceStart
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assert.throws(function() {
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Buffer.allocUnsafe(5).copy(Buffer.allocUnsafe(5), 0, -1);
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}, RangeError);
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common.expectsError(
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() => Buffer.allocUnsafe(5).copy(Buffer.allocUnsafe(5), 0, -1),
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errorProperty);
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{
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// check sourceEnd resets to targetEnd if former is greater than the latter
@@ -111,7 +118,8 @@ assert.throws(function() {
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}
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// throw with negative sourceEnd
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assert.throws(() => b.copy(c, 0, 0, -1), RangeError);
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common.expectsError(
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() => b.copy(c, 0, -1), errorProperty);
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// when sourceStart is greater than sourceEnd, zero copied
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assert.strictEqual(b.copy(c, 0, 100, 10), 0);

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