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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.
66 lines
1.7 KiB
JavaScript
66 lines
1.7 KiB
JavaScript
import assert from 'assert';
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import lodashStable from 'lodash';
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import concat from '../concat.js';
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describe('concat', function() {
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it('should shallow clone `array`', function() {
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var array = [1, 2, 3],
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actual = concat(array);
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assert.deepStrictEqual(actual, array);
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assert.notStrictEqual(actual, array);
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});
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it('should concat arrays and values', function() {
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var array = [1],
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actual = concat(array, 2, [3], [[4]]);
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assert.deepStrictEqual(actual, [1, 2, 3, [4]]);
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assert.deepStrictEqual(array, [1]);
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});
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it('should cast non-array `array` values to arrays', function() {
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var values = [, null, undefined, false, true, 1, NaN, 'a'];
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var expected = lodashStable.map(values, function(value, index) {
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return index ? [value] : [];
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});
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var actual = lodashStable.map(values, function(value, index) {
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return index ? concat(value) : concat();
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});
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assert.deepStrictEqual(actual, expected);
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expected = lodashStable.map(values, function(value) {
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return [value, 2, [3]];
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});
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actual = lodashStable.map(values, function(value) {
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return concat(value, [2], [[3]]);
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});
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assert.deepStrictEqual(actual, expected);
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});
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it('should treat sparse arrays as dense', function() {
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var expected = [],
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actual = concat(Array(1), Array(1));
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expected.push(undefined, undefined);
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assert.ok('0'in actual);
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assert.ok('1' in actual);
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assert.deepStrictEqual(actual, expected);
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});
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it('should return a new wrapped array', function() {
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var array = [1],
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wrapped = _(array).concat([2, 3]),
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actual = wrapped.value();
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assert.deepEqual(array, [1]);
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assert.deepEqual(actual, [1, 2, 3]);
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});
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});
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