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Diffstat (limited to 'javascript/triangle/triangle.spec.js')
-rw-r--r-- | javascript/triangle/triangle.spec.js | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/javascript/triangle/triangle.spec.js b/javascript/triangle/triangle.spec.js new file mode 100644 index 0000000..afa2aef --- /dev/null +++ b/javascript/triangle/triangle.spec.js @@ -0,0 +1,104 @@ +import { Triangle } from './triangle'; + +describe('Triangle', () => { + describe('equilateral triangle', () => { + test('all sides are equal', () => { + const triangle = new Triangle(2, 2, 2); + expect(triangle.isEquilateral).toBe(true); + }); + + test('any side is unequal', () => { + const triangle = new Triangle(2, 3, 2); + expect(triangle.isEquilateral).toBe(false); + }); + + test('no sides are equal', () => { + const triangle = new Triangle(5, 4, 6); + expect(triangle.isEquilateral).toBe(false); + }); + + test('all zero sides is not a triangle', () => { + const triangle = new Triangle(0, 0, 0); + expect(triangle.isEquilateral).toBe(false); + }); + + test('sides may be floats', () => { + const triangle = new Triangle(0.5, 0.5, 0.5); + expect(triangle.isEquilateral).toBe(true); + }); + }); + + describe('isosceles triangle', () => { + test('last two sides are equal', () => { + const triangle = new Triangle(3, 4, 4); + expect(triangle.isIsosceles).toBe(true); + }); + + test('first two sides are equal', () => { + const triangle = new Triangle(4, 4, 3); + expect(triangle.isIsosceles).toBe(true); + }); + + test('first and last sides are equal', () => { + const triangle = new Triangle(4, 3, 4); + expect(triangle.isIsosceles).toBe(true); + }); + + test('equilateral triangles are also isosceles', () => { + const triangle = new Triangle(4, 4, 4); + expect(triangle.isIsosceles).toBe(true); + }); + + test('no sides are equal', () => { + const triangle = new Triangle(2, 3, 4); + expect(triangle.isIsosceles).toBe(false); + }); + + test('first triangle inequality violation', () => { + const triangle = new Triangle(1, 1, 3); + expect(triangle.isIsosceles).toBe(false); + }); + + test('second triangle inequality violation', () => { + const triangle = new Triangle(1, 3, 1); + expect(triangle.isIsosceles).toBe(false); + }); + + test('third triangle inequality violation', () => { + const triangle = new Triangle(3, 1, 1); + expect(triangle.isIsosceles).toBe(false); + }); + + test('sides may be floats', () => { + const triangle = new Triangle(0.5, 0.4, 0.5); + expect(triangle.isIsosceles).toBe(true); + }); + }); + + describe('scalene triangle', () => { + test('no sides are equal', () => { + const triangle = new Triangle(5, 4, 6); + expect(triangle.isScalene).toBe(true); + }); + + test('all sides are equal', () => { + const triangle = new Triangle(4, 4, 4); + expect(triangle.isScalene).toBe(false); + }); + + test('two sides are equal', () => { + const triangle = new Triangle(4, 4, 3); + expect(triangle.isScalene).toBe(false); + }); + + test('may not violate triangle inequality', () => { + const triangle = new Triangle(7, 3, 2); + expect(triangle.isScalene).toBe(false); + }); + + test('sides may be floats', () => { + const triangle = new Triangle(0.5, 0.4, 0.6); + expect(triangle.isScalene).toBe(true); + }); + }); +}); |