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- /* public/sum.test.js */
-
- describe('#sum()', function() {
- context('without arguments', function() {
-
- it('should return 0', function() {
- expect(sum()).to.equal(0)
- })
-
- })
-
- context('with number arguments', function() {
-
- it('should return sum of arguments', function() {
- expect(sum(1, 2, 3, 4, 5)).to.equal(15)
- })
-
- it('should return argument when only one argument is passed', function() {
- expect(sum(5)).to.equal(5)
- })
-
- })
-
- context('with non-number arguments', function() {
-
- it('should throw error', function() {
- expect(function() {
- sum(1, 2, '3', [4], 5)
- }).to.throw(TypeError, 'sum() expects only numbers.')
- })
-
- })
- })
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