17 lines
440 B
JavaScript
17 lines
440 B
JavaScript
const expect = require('expect');
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const {bindKey} = require('./_30s.js');
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test('bindKey is a Function', () => {
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expect(bindKey).toBeInstanceOf(Function);
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});
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const freddy = {
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user: 'fred',
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greet(greeting, punctuation) {
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return greeting + ' ' + this.user + punctuation;
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}
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};
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const freddyBound = bindKey(freddy, 'greet');
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test('Binds function to an object context', () => {
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expect(freddyBound('hi', '!')).toBe('hi fred!');
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});
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