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
12 lines
313 B
JavaScript
12 lines
313 B
JavaScript
const {isBoolean} = require('./_30s.js');
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test('isBoolean is a Function', () => {
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expect(isBoolean).toBeInstanceOf(Function);
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});
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test('passed value is not a boolean', () => {
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expect(isBoolean(null)).toBeFalsy();
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});
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test('passed value is not a boolean', () => {
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expect(isBoolean(false)).toBeTruthy();
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});
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