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35 lines
1.0 KiB
35 lines
1.0 KiB
// 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 {toLength} = require('internal/util');
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const maxValue = Number.MAX_SAFE_INTEGER;
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const expectZero = [
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'0', '-0', NaN, {}, [], {'a': 'b'}, [1, 2], '0x', '0o', '0b', false,
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'', ' ', undefined, null, -1, -1.25, -1.1, -1.9, -Infinity
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];
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expectZero.forEach(function(value) {
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assert.strictEqual(toLength(value), 0);
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});
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assert.strictEqual(toLength(maxValue - 1), maxValue - 1);
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assert.strictEqual(maxValue, maxValue);
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assert.strictEqual(toLength(Infinity), maxValue);
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assert.strictEqual(toLength(maxValue + 1), maxValue);
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[
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'0x100', '0o100', '0b100', 0x100, -0x100, 0o100, -0o100, 0b100, -0b100, true
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].forEach(function(value) {
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assert.strictEqual(toLength(value), +value > 0 ? +value : 0);
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});
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const expectIntegers = new Map([
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[[1], 1], [[-1], 0], [['1'], 1], [['-1'], 0],
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[3.14, 3], [-3.14, 0], ['3.14', 3], ['-3.14', 0],
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]);
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expectIntegers.forEach(function(expected, value) {
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assert.strictEqual(toLength(value), expected);
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});
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