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
27 lines
837 B
JavaScript
27 lines
837 B
JavaScript
const {binomialCoefficient} = require('./_30s.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 the appropriate value', () => {
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expect(binomialCoefficient(8, -1)).toBe(0);
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});
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test('Returns the appropriate value', () => {
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expect(binomialCoefficient(8, 1)).toBe(8);
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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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