25 lines
437 B
JavaScript
25 lines
437 B
JavaScript
const expect = require('expect');
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const collatz = require('./collatz.js');
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test('collatz is a Function', () => {
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expect(collatz).toBeInstanceOf(Function);
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});
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test('When n is even, divide by 2', () => {
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expect(collatz(8), 4).toBe()
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});
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test('When n is odd, times by 3 and add 1', () => {
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expect(collatz(9), 28).toBe()
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});
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let n = 9;
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while(true){
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if (n === 1){
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break;
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}
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n = collatz(n);
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}
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