OZG-6988 implement button

Sub task: OZG-7446

alfa-client/libs/admin/statistik/src/lib/statistik-container/statistik-container.component.html

@@ -24,3 +24,10 @@
 
 -->
 <h1 class="heading-1" data-test-id="statistik-header-text">Statistik</h1>
+@if (!evaluateAdditionalFields) {
+  <ods-button
+    text="Weitere Felder auswerten"
+    (clickEmitter)="onEvaluateAdditionalFields()"
+    data-test-id="weitere-felder-auswerten-button"
+  ></ods-button>
+}

alfa-client/libs/admin/statistik/src/lib/statistik-container/statistik-container.component.spec.ts

@@ -21,13 +21,17 @@
  * Die sprachspezifischen Genehmigungen und Beschränkungen
  * unter der Lizenz sind dem Lizenztext zu entnehmen.
  */
+import { existsAsHtmlElement, notExistsAsHtmlElement, triggerEvent } from '@alfa-client/test-utils';
 import { ComponentFixture, TestBed } from '@angular/core/testing';
+import { getDataTestIdOf } from '../../../../../tech-shared/test/data-test';
 import { StatistikContainerComponent } from './statistik-container.component';
 
 describe('StatistikContainerComponent', () => {
   let component: StatistikContainerComponent;
   let fixture: ComponentFixture<StatistikContainerComponent>;
 
+  const evaluateAdditionalFieldsTestId: string = getDataTestIdOf('weitere-felder-auswerten-button');
+
   beforeEach(async () => {
     await TestBed.configureTestingModule({
       imports: [StatistikContainerComponent],
@@ -41,7 +45,60 @@ describe('StatistikContainerComponent', () => {
     fixture.detectChanges();
   });
 
-  it('should create', () => {
-    expect(component).toBeTruthy();
+  describe('component', () => {
+    it('should create', () => {
+      expect(component).toBeTruthy();
+    });
+
+    it('should set default values', () => {
+      expect(component.evaluateAdditionalFields).toBeDefined();
+      expect(component.evaluateAdditionalFields).toBeFalsy();
+    });
+
+    describe('onEvaluateAdditionalFieldsClick', () => {
+      it('should update component state', () => {
+        component.evaluateAdditionalFields = false;
+
+        component.onEvaluateAdditionalFields();
+
+        expect(component.evaluateAdditionalFields).toBeTruthy();
+      });
+    });
+  });
+
+  describe('template', () => {
+    describe('weiter felder auswerten button', () => {
+      it('should exists', () => {
+        fixture.detectChanges();
+
+        existsAsHtmlElement(fixture, evaluateAdditionalFieldsTestId);
+      });
+
+      it('should NOT exists', () => {
+        component.evaluateAdditionalFields = true;
+
+        fixture.detectChanges();
+
+        notExistsAsHtmlElement(fixture, evaluateAdditionalFieldsTestId);
+      });
+
+      describe('output', () => {
+        describe('clickEmitter', () => {
+          it('should call handler', () => {
+            component.onEvaluateAdditionalFields = jest.fn();
+            component.evaluateAdditionalFields = false;
+            fixture.detectChanges();
+
+            triggerEvent({
+              fixture,
+              elementSelector: evaluateAdditionalFieldsTestId,
+              name: 'clickEmitter',
+            });
+
+            expect(component.onEvaluateAdditionalFields).toHaveBeenCalled();
+          });
+        });
+      });
+    });
   });
 });

alfa-client/libs/admin/statistik/src/lib/statistik-container/statistik-container.component.ts

@@ -23,11 +23,18 @@
  */
 import { CommonModule } from '@angular/common';
 import { Component } from '@angular/core';
+import { ButtonComponent } from '@ods/system';
 
 @Component({
   selector: 'admin-statistik-container',
   templateUrl: './statistik-container.component.html',
   standalone: true,
-  imports: [CommonModule],
+  imports: [CommonModule, ButtonComponent],
 })
-export class StatistikContainerComponent {}
+export class StatistikContainerComponent {
+  public evaluateAdditionalFields: boolean = false;
+
+  public onEvaluateAdditionalFields(): void {
+    this.evaluateAdditionalFields = true;
+  }
+}