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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.
102 lines
3.3 KiB
JavaScript
102 lines
3.3 KiB
JavaScript
import assert from 'assert';
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import lodashStable from 'lodash';
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import { noop } from './utils.js';
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import defaultsDeep from '../defaultsDeep.js';
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describe('defaultsDeep', function() {
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it('should deep assign source properties if missing on `object`', function() {
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var object = { 'a': { 'b': 2 }, 'd': 4 },
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source = { 'a': { 'b': 3, 'c': 3 }, 'e': 5 },
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expected = { 'a': { 'b': 2, 'c': 3 }, 'd': 4, 'e': 5 };
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assert.deepStrictEqual(defaultsDeep(object, source), expected);
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});
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it('should accept multiple sources', function() {
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var source1 = { 'a': { 'b': 3 } },
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source2 = { 'a': { 'c': 3 } },
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source3 = { 'a': { 'b': 3, 'c': 3 } },
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source4 = { 'a': { 'c': 4 } },
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expected = { 'a': { 'b': 2, 'c': 3 } };
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assert.deepStrictEqual(defaultsDeep({ 'a': { 'b': 2 } }, source1, source2), expected);
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assert.deepStrictEqual(defaultsDeep({ 'a': { 'b': 2 } }, source3, source4), expected);
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});
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it('should not overwrite `null` values', function() {
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var object = { 'a': { 'b': null } },
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source = { 'a': { 'b': 2 } },
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actual = defaultsDeep(object, source);
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assert.strictEqual(actual.a.b, null);
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});
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it('should not overwrite regexp values', function() {
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var object = { 'a': { 'b': /x/ } },
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source = { 'a': { 'b': /y/ } },
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actual = defaultsDeep(object, source);
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assert.deepStrictEqual(actual.a.b, /x/);
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});
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it('should not convert function properties to objects', function() {
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var actual = defaultsDeep({}, { 'a': noop });
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assert.strictEqual(actual.a, noop);
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actual = defaultsDeep({}, { 'a': { 'b': noop } });
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assert.strictEqual(actual.a.b, noop);
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});
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it('should overwrite `undefined` values', function() {
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var object = { 'a': { 'b': undefined } },
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source = { 'a': { 'b': 2 } },
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actual = defaultsDeep(object, source);
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assert.strictEqual(actual.a.b, 2);
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});
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it('should assign `undefined` values', function() {
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var source = { 'a': undefined, 'b': { 'c': undefined, 'd': 1 } },
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expected = lodashStable.cloneDeep(source),
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actual = defaultsDeep({}, source);
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assert.deepStrictEqual(actual, expected);
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});
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it('should merge sources containing circular references', function() {
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var object = {
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'foo': { 'b': { 'c': { 'd': {} } } },
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'bar': { 'a': 2 }
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};
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var source = {
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'foo': { 'b': { 'c': { 'd': {} } } },
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'bar': {}
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};
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object.foo.b.c.d = object;
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source.foo.b.c.d = source;
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source.bar.b = source.foo.b;
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var actual = defaultsDeep(object, source);
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assert.strictEqual(actual.bar.b, actual.foo.b);
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assert.strictEqual(actual.foo.b.c.d, actual.foo.b.c.d.foo.b.c.d);
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});
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it('should not modify sources', function() {
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var source1 = { 'a': 1, 'b': { 'c': 2 } },
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source2 = { 'b': { 'c': 3, 'd': 3 } },
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actual = defaultsDeep({}, source1, source2);
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assert.deepStrictEqual(actual, { 'a': 1, 'b': { 'c': 2, 'd': 3 } });
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assert.deepStrictEqual(source1, { 'a': 1, 'b': { 'c': 2 } });
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assert.deepStrictEqual(source2, { 'b': { 'c': 3, 'd': 3 } });
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});
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it('should not attempt a merge of a string into an array', function() {
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var actual = defaultsDeep({ 'a': ['abc'] }, { 'a': 'abc' });
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assert.deepStrictEqual(actual.a, ['abc']);
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});
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});
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