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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.
88 lines
2.7 KiB
JavaScript
88 lines
2.7 KiB
JavaScript
import assert from 'assert';
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import { stubTrue, stubOne, stubA, stubFalse, slice } from './utils.js';
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import overEvery from '../overEvery.js';
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describe('overEvery', function() {
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it('should create a function that returns `true` if all predicates return truthy', function() {
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var over = overEvery(stubTrue, stubOne, stubA);
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assert.strictEqual(over(), true);
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});
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it('should return `false` as soon as a predicate returns falsey', function() {
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var count = 0,
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countFalse = function() { count++; return false; },
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countTrue = function() { count++; return true; },
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over = overEvery(countTrue, countFalse, countTrue);
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assert.strictEqual(over(), false);
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assert.strictEqual(count, 2);
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});
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it('should use `_.identity` when a predicate is nullish', function() {
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var over = overEvery(undefined, null);
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assert.strictEqual(over(true), true);
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assert.strictEqual(over(false), false);
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});
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it('should work with `_.property` shorthands', function() {
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var over = overEvery('b', 'a');
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assert.strictEqual(over({ 'a': 1, 'b': 1 }), true);
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assert.strictEqual(over({ 'a': 0, 'b': 1 }), false);
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});
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it('should work with `_.matches` shorthands', function() {
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var over = overEvery({ 'b': 2 }, { 'a': 1 });
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assert.strictEqual(over({ 'a': 1, 'b': 2 }), true);
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assert.strictEqual(over({ 'a': 0, 'b': 2 }), false);
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});
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it('should work with `_.matchesProperty` shorthands', function() {
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var over = overEvery([['b', 2], ['a', 1]]);
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assert.strictEqual(over({ 'a': 1, 'b': 2 }), true);
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assert.strictEqual(over({ 'a': 0, 'b': 2 }), false);
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});
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it('should differentiate between `_.property` and `_.matchesProperty` shorthands', function() {
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var over = overEvery(['a', 1]);
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assert.strictEqual(over({ 'a': 1, '1': 1 }), true);
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assert.strictEqual(over({ 'a': 1, '1': 0 }), false);
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assert.strictEqual(over({ 'a': 0, '1': 1 }), false);
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over = overEvery([['a', 1]]);
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assert.strictEqual(over({ 'a': 1 }), true);
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assert.strictEqual(over({ 'a': 2 }), false);
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});
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it('should flatten `predicates`', function() {
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var over = overEvery(stubTrue, [stubFalse]);
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assert.strictEqual(over(), false);
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});
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it('should provide arguments to predicates', function() {
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var args;
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var over = overEvery(function() {
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args = slice.call(arguments);
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});
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over('a', 'b', 'c');
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assert.deepStrictEqual(args, ['a', 'b', 'c']);
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});
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it('should use `this` binding of function for `predicates`', function() {
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var over = overEvery(function() { return this.b; }, function() { return this.a; }),
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object = { 'over': over, 'a': 1, 'b': 2 };
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assert.strictEqual(object.over(), true);
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object.a = 0;
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assert.strictEqual(object.over(), false);
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});
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});
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