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
359 B
JavaScript
12 lines
359 B
JavaScript
const {overArgs} = require('./_30s.js');
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test('overArgs is a Function', () => {
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expect(overArgs).toBeInstanceOf(Function);
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});
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const square = n => n * n;
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const double = n => n * 2;
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const fn = overArgs((x, y) => [x, y], [square, double]);
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test('Invokes the provided function with its arguments transformed', () => {
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expect(fn(9, 3)).toEqual([81, 6]);
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});
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