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Add tests for edges cases of BufferList: - test operations when the length is 0 - test operations when the list only has one element PR-URL: https://github.com/nodejs/node/pull/10171 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Anna Henningsen <anna@addaleax.net>
28 lines
695 B
JavaScript
28 lines
695 B
JavaScript
// Flags: --expose_internals
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'use strict';
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require('../common');
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const assert = require('assert');
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const BufferList = require('internal/streams/BufferList');
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// Test empty buffer list.
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const emptyList = new BufferList();
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emptyList.shift();
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assert.deepStrictEqual(emptyList, new BufferList());
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assert.strictEqual(emptyList.join(','), '');
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assert.deepStrictEqual(emptyList.concat(0), Buffer.alloc(0));
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// Test buffer list with one element.
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const list = new BufferList();
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list.push('foo');
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assert.strictEqual(list.concat(1), 'foo');
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assert.strictEqual(list.join(','), 'foo');
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const shifted = list.shift();
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assert.strictEqual(shifted, 'foo');
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assert.deepStrictEqual(list, new BufferList());
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