83a6a6ea32
* chore: make aware eslint that we use jest By setting up the jest environment, we no longer need to declare the 'test' global in the configuration. * chore: don't need to import expect, it's a jest environment global * chore: don't need to import expect when creating undefined test
16 lines
593 B
JavaScript
16 lines
593 B
JavaScript
const {filterNonUnique} = require('./_30s.js');
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test('filterNonUnique is a Function', () => {
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expect(filterNonUnique).toBeInstanceOf(Function);
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});
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test('Filters out the non-unique values in an array', () => {
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expect(filterNonUnique([1, 2, 2, 3, 4, 4, 5])).toEqual([1, 3, 5]);
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});
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test('Works with multiple types of values in the same array', () => {
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expect(filterNonUnique([1, 2, 2, 3, 4, 4, 5, true, 'repeated text', 'repeated text', 'unique text'])).toEqual([1, 3, 5, true, 'unique text']);
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});
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test('No error on empty array', () => {
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expect(filterNonUnique([])).toEqual([]);
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});
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