Trying to get the tests to pass, but still more work to do.

src/app/app.module.ts

@@ -49,7 +49,7 @@ import { MatDatepickerModule } from '@angular/material/datepicker';
 import { MatNativeDateModule, DateAdapter } from '@angular/material/core';
 import {MatPaginatorModule} from '@angular/material/paginator';
 import { CustomDateAdapter } from './custom-date-adapter';
-import { MatTableModule } from '@angular/material/table'  
+import { MatTableModule } from '@angular/material/table';
 import {MatGridListModule} from '@angular/material/grid-list';
 import {MatDividerModule} from '@angular/material/divider';
 import { SidebarComponent } from './sidebar/sidebar.component';
@@ -130,7 +130,7 @@ export function getBaseHref(platformLocation: PlatformLocation): string {
     ApiService,
     GraphService,
     CacheService,
-    SettingsService, 
+    SettingsService,
     MatDatepickerModule,
     {provide: DateAdapter, useClass: CustomDateAdapter },
     {provide: 'APP_ENVIRONMENT', useClass: ThisEnvironment},

src/app/custom-date-adapter.ts

@@ -1,11 +1,13 @@
 import { NativeDateAdapter } from '@angular/material/core';
+import {Injectable} from '@angular/core';
 
 
 /** Adapts the native JS Date for use with cdk-based components that work with dates. */
+@Injectable()
 export class CustomDateAdapter extends NativeDateAdapter {
-  
+
   getFirstDayOfWeek(): number {
    return 1;
   }
 
-}
+}

src/app/graphs/graphs.component.spec.ts

@@ -1,19 +1,43 @@
 import { ComponentFixture, TestBed } from '@angular/core/testing';
 
 import { GraphsComponent } from './graphs.component';
+import {HttpClientTestingModule, HttpTestingController} from '@angular/common/http/testing';
+import {MatBottomSheetModule} from '@angular/material/bottom-sheet';
+import {RouterTestingModule} from '@angular/router/testing';
+import {ApiService} from '../services/api.service';
+import {APP_BASE_HREF} from '@angular/common';
+import {Router} from '@angular/router';
+import {MockEnvironment} from '../testing/environment.mock';
+import {DateAdapter} from '@angular/material/core';
+import {CustomDateAdapter} from '../custom-date-adapter';
 
 describe('GraphsComponent', () => {
   let component: GraphsComponent;
   let fixture: ComponentFixture<GraphsComponent>;
-
-  beforeEach(async () => {
-    await TestBed.configureTestingModule({
-      declarations: [ GraphsComponent ]
-    })
-    .compileComponents();
-  });
+  let httpMock: HttpTestingController;
+  const mockEnvironment = new MockEnvironment();
+  const mockRouter = {
+    createUrlTree: jasmine.createSpy('createUrlTree'),
+    navigate: jasmine.createSpy('navigate')
+  };
 
   beforeEach(() => {
+    TestBed.configureTestingModule({
+      imports: [
+        HttpClientTestingModule,
+        MatBottomSheetModule,
+        RouterTestingModule.withRoutes([]),
+      ],
+      providers: [
+        ApiService,
+        {provide: 'APP_ENVIRONMENT', useValue: mockEnvironment},
+        {provide: APP_BASE_HREF, useValue: '/'},
+        {provide: Router, useValue: mockRouter},
+        {provide: Location, useValue: location},
+        {provide: DateAdapter, useClass: CustomDateAdapter }
+      ]
+    });
+    httpMock = TestBed.inject(HttpTestingController);
     fixture = TestBed.createComponent(GraphsComponent);
     component = fixture.componentInstance;
     fixture.detectChanges();

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

@@ -1,13 +1,43 @@
 import { TestBed } from '@angular/core/testing';
 
 import { GraphService } from './graph.service';
+import {HttpClientTestingModule, HttpTestingController} from '@angular/common/http/testing';
+import {MatBottomSheetModule} from '@angular/material/bottom-sheet';
+import {RouterTestingModule} from '@angular/router/testing';
+import {ApiService} from './api.service';
+import {APP_BASE_HREF} from '@angular/common';
+import {Router} from '@angular/router';
+import {MockEnvironment} from '../testing/environment.mock';
 
 describe('GraphService', () => {
+  let httpMock: HttpTestingController;
+  let location: Location;
   let service: GraphService;
+  const mockEnvironment = new MockEnvironment();
+  const mockRouter = {
+    createUrlTree: jasmine.createSpy('createUrlTree'),
+    navigate: jasmine.createSpy('navigate')
+  };
 
   beforeEach(() => {
-    TestBed.configureTestingModule({});
+    TestBed.configureTestingModule({
+      imports: [
+        HttpClientTestingModule,
+        MatBottomSheetModule,
+        RouterTestingModule.withRoutes([]),
+      ],
+      providers: [
+        ApiService,
+        {provide: 'APP_ENVIRONMENT', useValue: mockEnvironment},
+        {provide: APP_BASE_HREF, useValue: '/'},
+        {provide: Router, useValue: mockRouter},
+        {provide: Location, useValue: location},
+      ]
+    });
+
+    httpMock = TestBed.inject(HttpTestingController);
     service = TestBed.inject(GraphService);
+    location = TestBed.inject(Location);
   });
 
   it('should be created', () => {