MOBILE-4069 tests: Add unit tests for CoreMath

src/core/singletons/tests/math.test.ts

@@ -0,0 +1,29 @@
+// (C) Copyright 2015 Moodle Pty Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import { CoreMath } from '@singletons/math';
+
+describe('CoreMath singleton', () => {
+
+    it('clamps values', () => {
+        expect(CoreMath.clamp(150, 100, 200)).toEqual(150);
+        expect(CoreMath.clamp(25, 100, 200)).toEqual(100);
+        expect(CoreMath.clamp(-100, 100, 200)).toEqual(100);
+        expect(CoreMath.clamp(500, 100, 200)).toEqual(200);
+        expect(CoreMath.clamp(50.55, 100.11, 200.22)).toEqual(100.11);
+        expect(CoreMath.clamp(100, -200.22, -100.11)).toEqual(-100.11);
+        expect(CoreMath.clamp(-500, -200.22, -100.11)).toEqual(-200.22);
+    });
+
+});