Add imports and providers to enable basic testing

src/app/services/db-completion.service.spec.ts

@@ -1,12 +1,16 @@
 import { TestBed } from '@angular/core/testing';
 
 import { DbCompletionService } from './db-completion.service';
+import { HttpClientModule } from '@angular/common/http';
 
 describe('DbCompletionService', () => {
   let service: DbCompletionService;
 
   beforeEach(() => {
-    TestBed.configureTestingModule({});
+    TestBed.configureTestingModule({
+      imports: [HttpClientModule],
+      providers: [DbCompletionService]
+    });
     service = TestBed.inject(DbCompletionService);
   });
 

src/app/services/db-status.service.spec.ts

@@ -1,11 +1,16 @@
 import { TestBed } from '@angular/core/testing';
 
 import { DbStatusService } from './db-status.service';
+import { HttpClientModule } from '@angular/common/http';
 
 describe('DbStatusService', () => {
   let service: DbStatusService;
 
   beforeEach(() => {
+    TestBed.configureTestingModule({
+      imports: [HttpClientModule],
+      providers: [DbStatusService]
+    });
     TestBed.configureTestingModule({});
     service = TestBed.inject(DbStatusService);
   });

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

@@ -1,12 +1,16 @@
 import { TestBed } from '@angular/core/testing';
 
 import { DeviceService } from './device.service';
+import { HttpClientModule } from '@angular/common/http';
 
 describe('DeviceService', () => {
   let service: DeviceService;
 
   beforeEach(() => {
-    TestBed.configureTestingModule({});
+    TestBed.configureTestingModule({
+      imports: [HttpClientModule],
+      providers: [DeviceService]
+    });
     service = TestBed.inject(DeviceService);
   });
 

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

@@ -1,12 +1,16 @@
 import { TestBed } from '@angular/core/testing';
 
 import { FolderService } from './folder.service';
+import { HttpClientModule } from '@angular/common/http';
 
 describe('FolderService', () => {
   let service: FolderService;
 
   beforeEach(() => {
-    TestBed.configureTestingModule({});
+    TestBed.configureTestingModule({
+      imports: [HttpClientModule],
+      providers: [FolderService]
+    });
     service = TestBed.inject(FolderService);
   });
 

src/app/services/system-config.service.spec.ts

@@ -1,12 +1,16 @@
 import { TestBed } from '@angular/core/testing';
 
 import { SystemConfigService } from './system-config.service';
+import { HttpClientModule } from '@angular/common/http';
 
 describe('SystemConfigService', () => {
   let service: SystemConfigService;
 
   beforeEach(() => {
-    TestBed.configureTestingModule({});
+    TestBed.configureTestingModule({
+      imports: [HttpClientModule],
+      providers: [SystemConfigService]
+    });
     service = TestBed.inject(SystemConfigService);
   });
 

src/app/services/system-connections.service.spec.ts

@@ -1,12 +1,16 @@
 import { TestBed } from '@angular/core/testing';
 
 import { SystemConnectionsService } from './system-connections.service';
+import { HttpClientModule } from '@angular/common/http';
 
 describe('SystemConnectionsService', () => {
   let service: SystemConnectionsService;
 
   beforeEach(() => {
-    TestBed.configureTestingModule({});
+    TestBed.configureTestingModule({
+      imports: [HttpClientModule],
+      providers: [SystemConnectionsService]
+    });
     service = TestBed.inject(SystemConnectionsService);
   });
 

src/app/services/system-status.service.spec.ts

@@ -1,12 +1,16 @@
 import { TestBed } from '@angular/core/testing';
 
 import { SystemStatusService } from './system-status.service';
+import { HttpClientModule } from '@angular/common/http';
 
 describe('SystemStatusService', () => {
   let service: SystemStatusService;
 
   beforeEach(() => {
-    TestBed.configureTestingModule({});
+    TestBed.configureTestingModule({
+      imports: [HttpClientModule],
+      providers: [SystemStatusService]
+    });
     service = TestBed.inject(SystemStatusService);
   });