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* Install test dependencies. * Add initial test files. These files were created using a simplistic AST manipulator using `recast` to preserve formatting. There's bound to be a huge chunk of errors, but this serves as a good start. QUnit was replaced with Mocha, with ES2015 imports running via `esm`. As far as possible, QUnit-specific syntax has been replaced with Mocha's `describe` and `it`, while the native Node.js `assert` module is used for assertions. Files in the `test` directory ending in `.test.js` will be treated as test files. * Add initial passing files to test run.
64 lines
2.0 KiB
JavaScript
64 lines
2.0 KiB
JavaScript
import assert from 'assert';
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import lodashStable from 'lodash';
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import { _, falsey } from './utils.js';
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describe('indexOf methods', function() {
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lodashStable.each(['indexOf', 'lastIndexOf', 'sortedIndexOf', 'sortedLastIndexOf'], function(methodName) {
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var func = _[methodName],
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isIndexOf = !/last/i.test(methodName),
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isSorted = /^sorted/.test(methodName);
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it('`_.' + methodName + '` should accept a falsey `array`', function() {
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var expected = lodashStable.map(falsey, lodashStable.constant(-1));
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var actual = lodashStable.map(falsey, function(array, index) {
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try {
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return index ? func(array) : func();
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} catch (e) {}
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});
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assert.deepStrictEqual(actual, expected);
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});
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it('`_.' + methodName + '` should return `-1` for an unmatched value', function() {
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var array = [1, 2, 3],
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empty = [];
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assert.strictEqual(func(array, 4), -1);
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assert.strictEqual(func(array, 4, true), -1);
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assert.strictEqual(func(array, undefined, true), -1);
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assert.strictEqual(func(empty, undefined), -1);
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assert.strictEqual(func(empty, undefined, true), -1);
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});
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it('`_.' + methodName + '` should not match values on empty arrays', function() {
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var array = [];
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array[-1] = 0;
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assert.strictEqual(func(array, undefined), -1);
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assert.strictEqual(func(array, 0, true), -1);
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});
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it('`_.' + methodName + '` should match `NaN`', function() {
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var array = isSorted
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? [1, 2, NaN, NaN]
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: [1, NaN, 3, NaN, 5, NaN];
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if (isSorted) {
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assert.strictEqual(func(array, NaN, true), isIndexOf ? 2 : 3);
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}
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else {
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assert.strictEqual(func(array, NaN), isIndexOf ? 1 : 5);
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assert.strictEqual(func(array, NaN, 2), isIndexOf ? 3 : 1);
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assert.strictEqual(func(array, NaN, -2), isIndexOf ? 5 : 3);
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}
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});
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it('`_.' + methodName + '` should match `-0` as `0`', function() {
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assert.strictEqual(func([-0], 0), 0);
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assert.strictEqual(func([0], -0), 0);
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});
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});
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});
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