#49 : Add unit tests

src/utils/math.test.js

@@ -0,0 +1,19 @@
+import {
+  getDistance,
+} from './math.js'
+
+describe('getDistance', () => {
+  it('returns correct distance between 2 points laying in one horizontal line', () => {
+    const p1 = { x: 0, y: 0 }
+    const p2 = { x: 5, y: 0 }
+
+    expect(getDistance(p1, p2)).toBe(5)
+  })
+
+  it('returns correct distance between 2 points', () => {
+    const p1 = { x: 1, y: 1 }
+    const p2 = { x: 5, y: 4 }
+
+    expect(getDistance(p1, p2)).toBe(5)
+  })
+})