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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.
72 lines
2.1 KiB
JavaScript
72 lines
2.1 KiB
JavaScript
import assert from 'assert';
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import lodashStable from 'lodash';
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import { noop, stubA, stubB, stubOne } from './utils.js';
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import invoke from '../invoke.js';
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describe('invoke', function() {
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it('should invoke a method on `object`', function() {
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var object = { 'a': lodashStable.constant('A') },
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actual = invoke(object, 'a');
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assert.strictEqual(actual, 'A');
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});
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it('should support invoking with arguments', function() {
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var object = { 'a': function(a, b) { return [a, b]; } },
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actual = invoke(object, 'a', 1, 2);
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assert.deepStrictEqual(actual, [1, 2]);
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});
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it('should not error on nullish elements', function() {
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var values = [null, undefined],
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expected = lodashStable.map(values, noop);
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var actual = lodashStable.map(values, function(value) {
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try {
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return invoke(value, 'a.b', 1, 2);
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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('should preserve the sign of `0`', function() {
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var object = { '-0': stubA, '0': stubB },
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props = [-0, Object(-0), 0, Object(0)];
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var actual = lodashStable.map(props, function(key) {
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return invoke(object, key);
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});
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assert.deepStrictEqual(actual, ['a', 'a', 'b', 'b']);
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});
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it('should support deep paths', function() {
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var object = { 'a': { 'b': function(a, b) { return [a, b]; } } };
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lodashStable.each(['a.b', ['a', 'b']], function(path) {
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var actual = invoke(object, path, 1, 2);
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assert.deepStrictEqual(actual, [1, 2]);
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});
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});
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it('should invoke deep property methods with the correct `this` binding', function() {
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var object = { 'a': { 'b': function() { return this.c; }, 'c': 1 } };
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lodashStable.each(['a.b', ['a', 'b']], function(path) {
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assert.deepStrictEqual(invoke(object, path), 1);
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});
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});
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it('should return an unwrapped value when implicitly chaining', function() {
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var object = { 'a': stubOne };
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assert.strictEqual(_(object).invoke('a'), 1);
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});
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it('should return a wrapped value when explicitly chaining', function() {
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var object = { 'a': stubOne };
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assert.ok(_(object).chain().invoke('a') instanceof _);
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});
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});
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