logger service tests.

Author: SAINIAbhishek

src/app/services/logger/logger.service.spec.ts

@@ -13,4 +13,19 @@ describe('LoggerService', () => {
   it('should be created', () => {
     expect(service).toBeTruthy();
   });
+
+  it('should not have any messages at starting', () => {
+    expect(service.messages.length).toBe(0);
+  });
+
+  it('should add a message when log() is called', () => {
+    service.log('this is a new message');
+    expect(service.messages.length).toBe(1);
+  });
+
+  it('should clear all the messages when clear() is called', () => {
+    service.log('this is a new message');
+    service.clear();
+    expect(service.messages.length).toBe(0);
+  });
 });