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
17 lines
428 B
JavaScript
17 lines
428 B
JavaScript
const {functions} = require('./_30s.js');
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test('functions is a Function', () => {
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expect(functions).toBeInstanceOf(Function);
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});
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function Foo() {
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this.a = () => 1;
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this.b = () => 2;
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}
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Foo.prototype.c = () => 3;
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test('Returns own methods', () => {
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expect(functions(new Foo())).toEqual(['a', 'b']);
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});
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test('Returns own and inherited methods', () => {
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expect(functions(new Foo(), true)).toEqual(['a', 'b', 'c']);
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});
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