diff --git a/src/main/js/app/directive/ngx-datatable-doubleclick.directive.spec.ts b/src/main/js/app/directive/ngx-datatable-doubleclick.directive.spec.ts
new file mode 100644
index 0000000..9a1dff4
--- /dev/null
+++ b/src/main/js/app/directive/ngx-datatable-doubleclick.directive.spec.ts
@@ -0,0 +1,76 @@
+import {Component} from '@angular/core';
+import {ComponentFixture, TestBed} from '@angular/core/testing';
+import {By} from '@angular/platform-browser';
+import {NgxDatatableDblClickDirective} from './ngx-datatable-doubleclick.directive';
+import {Model} from '@swimlane/ngx-datatable';
+
+@Component({
+  template: `
+    <div
+      onDblClick
+      (onDblClick)="onRowDblClick($event)">
+    </div>
+  `,
+})
+class TestComponent {
+  onRowDblClick = jasmine.createSpy('onRowDblClick');
+}
+
+describe('NgxDatatableDblClickDirective', () => {
+  let fixture: ComponentFixture<TestComponent>;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({
+      imports: [NgxDatatableDblClickDirective], // Use `imports` for standalone directives
+      declarations: [TestComponent],
+    });
+    fixture = TestBed.createComponent(TestComponent);
+    fixture.detectChanges();
+  });
+
+  it('should add "onDblClick" class to the host element', () => {
+    const hostElement = fixture.debugElement.query(By.directive(NgxDatatableDblClickDirective));
+    expect(hostElement.nativeElement.classList).toContain('onDblClick');
+  });
+
+  it('should emit "dblClick" event when a dblclick event with a row is received', () => {
+    const hostElement = fixture.debugElement.query(By.directive(NgxDatatableDblClickDirective));
+    const directive = hostElement.injector.get(NgxDatatableDblClickDirective);
+
+    const testRow = {id: 1, name: 'Test Row'};
+    const mockEvent: Model = {
+      type: 'dblclick',
+      row: testRow,
+      event: new MouseEvent('dblclick'),
+      rowElement: document.createElement('tr'),
+      cellElement: document.createElement('td'),
+      cellIndex: 0,
+    };
+
+    directive.onActivate(mockEvent);
+
+    fixture.detectChanges();
+    const testComponent = fixture.componentInstance;
+    expect(testComponent.onRowDblClick).toHaveBeenCalledWith(testRow);
+  });
+
+  it('should not emit "dblClick" event for non-dblclick events', () => {
+    const hostElement = fixture.debugElement.query(By.directive(NgxDatatableDblClickDirective));
+    const directive = hostElement.injector.get(NgxDatatableDblClickDirective);
+
+    const mockEvent: Model = {
+      type: 'click',
+      row: {id: 1, name: 'Test Row'},
+      event: new MouseEvent('click'),
+      rowElement: document.createElement('tr'),
+      cellElement: document.createElement('td'),
+      cellIndex: 0,
+    };
+
+    directive.onActivate(mockEvent);
+
+    fixture.detectChanges();
+    const testComponent = fixture.componentInstance;
+    expect(testComponent.onRowDblClick).not.toHaveBeenCalled();
+  });
+});
diff --git a/src/main/js/app/model/demo.mock.ts b/src/main/js/app/model/demo.mock.ts
new file mode 100644
index 0000000..9d3b95c
--- /dev/null
+++ b/src/main/js/app/model/demo.mock.ts
@@ -0,0 +1,16 @@
+import {Demo, DemoFilter} from './demo.model';
+
+export const demoFilterMock : DemoFilter = {
+  eingangVon: '20241224',
+  eingangBis: '20241230',
+  system: 'ABC',
+  nachrichtentyp: 'BCD',
+  nummer1: '12345678',
+  nummer2: '23456789',
+};
+
+export const demoListMock : Demo[] = [{
+  name: 'Name 1',
+  gender: 'Gender 1',
+  company: 'Company 1'
+}];
diff --git a/src/main/js/app/model/problemdetail.mock.ts b/src/main/js/app/model/problemdetail.mock.ts
new file mode 100644
index 0000000..18ccab5
--- /dev/null
+++ b/src/main/js/app/model/problemdetail.mock.ts
@@ -0,0 +1,5 @@
+import {ProblemDetail} from './problemdetail.model';
+
+export const problemdetailMock : ProblemDetail = {
+  todo: 'TODO'
+}
diff --git a/src/main/js/app/providers/german-date.provider.spec.ts b/src/main/js/app/providers/german-date.provider.spec.ts
new file mode 100644
index 0000000..95042c4
--- /dev/null
+++ b/src/main/js/app/providers/german-date.provider.spec.ts
@@ -0,0 +1,77 @@
+import {TestBed} from '@angular/core/testing';
+import {DateAdapter, MAT_DATE_FORMATS, MAT_DATE_LOCALE} from '@angular/material/core';
+import {provideGermanDate} from './german-date.provider';
+import {GermanDateAdapter} from './german-date.provider';
+
+describe('GermanDateAdapter', () => {
+  let adapter: GermanDateAdapter;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({
+      providers: provideGermanDate(),
+    });
+
+    adapter = TestBed.inject(DateAdapter) as GermanDateAdapter;
+  });
+
+  describe('parse', () => {
+    it('should parse a valid German date string', () => {
+      const date = adapter.parse('25.12.2024');
+      expect(date).toEqual(new Date(2024, 11, 25)); // Months are 0-indexed in JavaScript
+    });
+
+    it('should return null for an invalid German date string', () => {
+      const date = adapter.parse('31.02.2024'); // Invalid date
+      expect(date).toBeNull();
+    });
+
+    it('should parse a timestamp', () => {
+      const timestamp = new Date(2024, 11, 25).getTime();
+      const date = adapter.parse(timestamp);
+      expect(date).toEqual(new Date(2024, 11, 25));
+    });
+
+    it('should return null for an invalid value', () => {
+      const date = adapter.parse('invalid-date');
+      expect(date).toBeNull();
+    });
+  });
+
+  describe('format', () => {
+    it('should format a date into German format', () => {
+      const date = new Date(2024, 11, 25); // December 25, 2024
+      const formatted = adapter.format(date, {});
+      expect(formatted).toBe('25.12.2024');
+    });
+  });
+});
+
+describe('provideGermanDate', () => {
+  it('should provide the correct providers', () => {
+    const providers = provideGermanDate(); // This is an array of providers
+    const matDateLocaleProvider = providers.find(
+      (p): p is { provide: typeof MAT_DATE_LOCALE; useValue: string } =>
+        (p as any).provide === MAT_DATE_LOCALE
+    );
+    const dateAdapterProvider = providers.find(
+      (p): p is { provide: typeof DateAdapter; useClass: typeof GermanDateAdapter } =>
+        (p as any).provide === DateAdapter
+    );
+    const matDateFormatsProvider = providers.find(
+      (p): p is { provide: typeof MAT_DATE_FORMATS; useValue: any } =>
+        (p as any).provide === MAT_DATE_FORMATS
+    );
+
+    expect(matDateLocaleProvider?.useValue).toBe('de-DE');
+    expect(dateAdapterProvider?.useClass).toBe(GermanDateAdapter);
+    expect(matDateFormatsProvider?.useValue).toEqual({
+      parse: { dateInput: ['dd.MM.yyyy'] },
+      display: {
+        dateInput: 'dd.MM.yyyy',
+        monthYearLabel: 'DD.MM.yyyy',
+        dateA11yLabel: 'LL',
+        monthYearA11yLabel: 'MMMM yyyy',
+      },
+    });
+  });
+});
diff --git a/src/main/js/app/providers/german-date.provider.ts b/src/main/js/app/providers/german-date.provider.ts
index 37f1ce3..b24a5b3 100644
--- a/src/main/js/app/providers/german-date.provider.ts
+++ b/src/main/js/app/providers/german-date.provider.ts
@@ -2,7 +2,7 @@ import {DateAdapter, MAT_DATE_FORMATS, MAT_DATE_LOCALE, NativeDateAdapter} from
 import {Provider} from '@angular/core';
 import moment from 'moment';
 
-class GermanDateAdapter extends NativeDateAdapter {
+export class GermanDateAdapter extends NativeDateAdapter {
   override parse(value: any): Date | null {
     if (typeof value === 'string' && value.indexOf('.') > -1) {
       const parsedDate = moment(value, 'DD.MM.YYYY', true);
diff --git a/src/main/js/app/store/demo/demo.action.spec.ts b/src/main/js/app/store/demo/demo.action.spec.ts
new file mode 100644
index 0000000..cd92399
--- /dev/null
+++ b/src/main/js/app/store/demo/demo.action.spec.ts
@@ -0,0 +1,29 @@
+import { searchDemosAction, searchDemosActionSuccess, searchDemosActionFail, DemoActionTypes } from './demo.actions';
+import {demoFilterMock, demoListMock} from '../../model/demo.mock';
+import {problemdetailMock} from '../../model/problemdetail.mock';
+
+describe('Demo Actions', () => {
+  it('should create the SEARCH_DEMOS action with the correct payload', () => {
+    const filter = demoFilterMock;
+    const action = searchDemosAction({ filter });
+
+    expect(action.type).toBe(DemoActionTypes.SEARCH_DEMOS);
+    expect(action.filter).toEqual(filter);
+  });
+
+  it('should create the SEARCH_DEMOS_SUCCESS action with the correct payload', () => {
+    const demoList = demoListMock;
+    const action = searchDemosActionSuccess({ demoList });
+
+    expect(action.type).toBe(DemoActionTypes.SEARCH_DEMOS_SUCCESS);
+    expect(action.demoList).toEqual(demoList);
+  });
+
+  it('should create the SEARCH_DEMOS_FAIL action with the correct payload', () => {
+    const error = problemdetailMock;
+    const action = searchDemosActionFail({ error });
+
+    expect(action.type).toBe(DemoActionTypes.SEARCH_DEMOS_FAIL);
+    expect(action.error).toEqual(error);
+  });
+});