Fixed Unit Test: added matChip in declaration of material module

Author: ptechofficial

src/app/component/circular-heatmap/circular-heatmap.component.spec.ts

@@ -3,6 +3,7 @@ import { ComponentFixture, TestBed } from '@angular/core/testing';
 import { ymlService } from 'src/app/service/yaml-parser/yaml-parser.service';
 import { CircularHeatmapComponent } from './circular-heatmap.component';
 import { RouterTestingModule } from '@angular/router/testing';
+import { MatChip } from '@angular/material/chips';
 
 describe('CircularHeatmapComponent', () => {
   let component: CircularHeatmapComponent;
@@ -15,6 +16,11 @@ describe('CircularHeatmapComponent', () => {
       declarations: [CircularHeatmapComponent],
     }).compileComponents();
   });
+  beforeEach(async () => {
+    TestBed.configureTestingModule({
+      declarations: [MatChip],
+    }).compileComponents();
+  });
 
   beforeEach(() => {
     fixture = TestBed.createComponent(CircularHeatmapComponent);