22 lines
693 B
JavaScript
22 lines
693 B
JavaScript
const expect = require('expect');
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const binomialCoefficient = require('./binomialCoefficient.js');
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test('binomialCoefficient is a Function', () => {
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expect(binomialCoefficient).toBeInstanceOf(Function);
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});
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test('Returns the appropriate value', () => {
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expect(binomialCoefficient(8, 2)).toBe(28);
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});
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test('Returns the appropriate value', () => {
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expect(binomialCoefficient(0, 0)).toBe(1);
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});
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test('Returns the appropriate value', () => {
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expect(binomialCoefficient(5, 3)).toBe(10);
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});
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test('Returns NaN', () => {
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expect(Number.isNaN(binomialCoefficient(NaN, 3))).toBeTruthy();
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});
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test('Returns NaN', () => {
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expect(Number.isNaN(binomialCoefficient(5, NaN))).toBeTruthy();
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});
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