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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
2.2 KiB
JavaScript
64 lines
2.2 KiB
JavaScript
import assert from 'assert';
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import lodashStable from 'lodash';
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import { _, identity, stubZero, falsey } from './utils.js';
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describe('findIndex and indexOf', function() {
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lodashStable.each(['findIndex', 'indexOf'], function(methodName) {
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var array = [1, 2, 3, 1, 2, 3],
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func = _[methodName],
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resolve = methodName == 'findIndex' ? lodashStable.curry(lodashStable.eq) : identity;
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it('`_.' + methodName + '` should return the index of the first matched value', function() {
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assert.strictEqual(func(array, resolve(3)), 2);
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});
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it('`_.' + methodName + '` should work with a positive `fromIndex`', function() {
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assert.strictEqual(func(array, resolve(1), 2), 3);
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});
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it('`_.' + methodName + '` should work with a `fromIndex` >= `length`', function() {
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var values = [6, 8, Math.pow(2, 32), Infinity],
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expected = lodashStable.map(values, lodashStable.constant([-1, -1, -1]));
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var actual = lodashStable.map(values, function(fromIndex) {
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return [
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func(array, resolve(undefined), fromIndex),
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func(array, resolve(1), fromIndex),
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func(array, resolve(''), fromIndex)
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];
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});
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assert.deepStrictEqual(actual, expected);
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});
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it('`_.' + methodName + '` should work with a negative `fromIndex`', function() {
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assert.strictEqual(func(array, resolve(2), -3), 4);
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});
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it('`_.' + methodName + '` should work with a negative `fromIndex` <= `-length`', function() {
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var values = [-6, -8, -Infinity],
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expected = lodashStable.map(values, stubZero);
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var actual = lodashStable.map(values, function(fromIndex) {
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return func(array, resolve(1), fromIndex);
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});
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assert.deepStrictEqual(actual, expected);
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});
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it('`_.' + methodName + '` should treat falsey `fromIndex` values as `0`', function() {
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var expected = lodashStable.map(falsey, stubZero);
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var actual = lodashStable.map(falsey, function(fromIndex) {
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return func(array, resolve(1), fromIndex);
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});
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assert.deepStrictEqual(actual, expected);
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});
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it('`_.' + methodName + '` should coerce `fromIndex` to an integer', function() {
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assert.strictEqual(func(array, resolve(2), 1.2), 1);
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});
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});
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});
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