31 lines
770 B
JavaScript
31 lines
770 B
JavaScript
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import {expect} from 'chai';
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import M from '../index.js';
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describe('Equations', () => {
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it('should work with one variable', () => {
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let equation = M.equation('x+2');
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expect(equation(2)).to.equal(4);
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});
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it('should work with multiple variables', () => {
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let equation = M.equation('x+y');
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expect(equation(2, 4)).to.equal(6);
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});
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it('should work with multiple instances of the same variable', () => {
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let equation = M.equation('x*x');
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expect(equation(4)).to.equal(16);
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});
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it('should only accept lowercase letters', () => {
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let equation = M.equation('X+2');
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expect(equation).to.throw();
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});
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it('Test case', () => {
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let equation = M.equation('2+x*(y+4)+z^2');
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expect(equation(2, 4, 3)).to.equal(27);
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});
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});
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