efce13b1e1
Update shank.md Update shank.md Update shank.js Update shank.test.js Update tag_database remove testlog
23 lines
619 B
JavaScript
23 lines
619 B
JavaScript
const expect = require("expect");
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const shank = require("./shank.js");
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test("shank is a Function", () => {
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expect(shank).toBeInstanceOf(Function);
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});
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const names = ['alpha', 'bravo', 'charlie'];
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test("Returns an array with the added elements.", () => {
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expect(shank(names, 1, 0, 'delta')).toEqual(['alpha', 'delta', 'bravo', 'charlie']);
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});
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test("Returns an array with the removed elements.", () => {
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expect(shank(names, 1, 1)).toEqual(['alpha', 'charlie']);
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});
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test("Does not mutate the original array", () => {
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shank(names, 1, 0, 'delta');
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expect(names).toEqual(['alpha', 'bravo', 'charlie']);
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});
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