Add docs.

src/app/_services/user.service.spec.ts

@@ -22,26 +22,6 @@ describe('UserService', () => {
     expect(service).toBeTruthy();
   });
 
-  it('should return user for available id', () => {
-    expect(service.getAccountById(1)).toEqual({
-        id: 1,
-        name: 'John Doe',
-        phone: '+25412345678',
-        address: '0xc86ff893ac40d3950b4d5f94a9b837258b0a9865',
-        type: 'user',
-        created: '08/16/2020',
-        balance: '12987',
-        failedPinAttempts: 1,
-        status: 'approved',
-        bio: 'Bodaboda',
-        gender: 'male'
-      });
-  });
-
-  it('should not return user for unavailable id', () => {
-    expect(service.getAccountById(9999999999)).toBeUndefined();
-  });
-
   it('should return action for available id', () => {
     expect(service.getActionById('1')).toEqual({
       id: 1,

src/app/shared/_pipes/safe.pipe.spec.ts

@@ -1,8 +1,12 @@
 import { SafePipe } from './safe.pipe';
+import {DomSanitizer} from '@angular/platform-browser';
+
+// tslint:disable-next-line:prefer-const
+let sanitizer: DomSanitizer;
 
 describe('SafePipe', () => {
   it('create an instance', () => {
-    const pipe = new SafePipe();
+    const pipe = new SafePipe(sanitizer);
     expect(pipe).toBeTruthy();
   });
 });