test: Fixed some coverage issues

Author: terkelg

test/clamp-01.test.js

@@ -5,6 +5,10 @@ describe('Clamp value between 0 and 1', () => {
     expect(clamp01(1)).toBe(1)
   })
 
+  it('Expect clamp01 with 2 to be 1', () => {
+    expect(clamp01(2)).toBe(1)
+  })
+
   it('Expect clamp01 with 0.5 to be 0.5', () => {
     expect(clamp01(0.5)).toBe(0.5)
   })

test/delta-time.test.js

@@ -2,6 +2,6 @@ import { deltaTime } from '../src/math-toolbox'
 
 describe('Calculate delta time', () => {
   it('Test with default param of Date.now()', () => {
-    expect(deltaTime(Date.now() - 200)).toBe(200)
+    expect(deltaTime(Date.now() - 200)).toBeCloseTo(200, 1) // Some time the test is too slow
   })
 })