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test: add property for RangeError in test-buffer-copy
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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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mritunjayz authored and MylesBorins committed Nov 27, 2018
1 parent d1ac802 commit a15de48
Showing 1 changed file with 13 additions and 5 deletions.
18 changes: 13 additions & 5 deletions test/parallel/test-buffer-copy.js
Original file line number Diff line number Diff line change
@@ -1,10 +1,17 @@
'use strict';

require('../common');
const common = require('../common');
const assert = require('assert');

const b = Buffer.allocUnsafe(1024);
const c = Buffer.allocUnsafe(512);

const errorProperty = {
code: 'ERR_INDEX_OUT_OF_RANGE',
type: RangeError,
message: 'Index out of range'
};

let cntr = 0;

{
Expand Down Expand Up @@ -107,9 +114,9 @@ bb.fill('hello crazy world');
b.copy(c, 0, 100, 10);

// copy throws at negative sourceStart
assert.throws(function() {
Buffer.allocUnsafe(5).copy(Buffer.allocUnsafe(5), 0, -1);
}, RangeError);
common.expectsError(
() => Buffer.allocUnsafe(5).copy(Buffer.allocUnsafe(5), 0, -1),
errorProperty);

{
// check sourceEnd resets to targetEnd if former is greater than the latter
Expand All @@ -122,7 +129,8 @@ assert.throws(function() {
}

// throw with negative sourceEnd
assert.throws(() => b.copy(c, 0, 0, -1), RangeError);
common.expectsError(
() => b.copy(c, 0, -1), errorProperty);

// when sourceStart is greater than sourceEnd, zero copied
assert.strictEqual(b.copy(c, 0, 100, 10), 0);
Expand Down

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