chore(*): fixing combo tests

Author: kdinev

projects/igniteui-angular/karma.conf.js

@@ -9,7 +9,8 @@ module.exports = function (config) {
     frameworks: ['parallel', 'jasmine', '@angular-devkit/build-angular'],
     files: [
       { pattern: '../../node_modules/hammerjs/hammer.min.js', watched: false },
-      { pattern: '../../node_modules/hammer-simulator/index.js', watched: false }
+      { pattern: '../../node_modules/hammer-simulator/index.js', watched: false },
+      { pattern: './test.css', watched: false }
     ],
     plugins: [
       'karma-parallel',

projects/igniteui-angular/karma.watch.conf.js

@@ -7,7 +7,8 @@ module.exports = function (config) {
     frameworks: ['jasmine', '@angular-devkit/build-angular'],
     files: [
       { pattern: '../../node_modules/hammerjs/hammer.min.js', watched: false },
-      { pattern: '../../node_modules/hammer-simulator/index.js', watched: false }
+      { pattern: '../../node_modules/hammer-simulator/index.js', watched: false },
+      { pattern: './test.css', watched: false }
     ],
     plugins: [
         'karma-jasmine',

projects/igniteui-angular/src/lib/combo/combo.component.spec.ts

@@ -86,6 +86,11 @@ describe('igxCombo', () => {
         });
         mockSelection.get.and.returnValue(new Set([]));
         const mockDocument = jasmine.createSpyObj('DOCUMENT', [], { 'defaultView': { getComputedStyle: () => null }});
+        jasmine.getEnv().allowRespy(true);
+
+        afterAll(() => {
+            jasmine.getEnv().allowRespy(false);
+        });
 
         it('should correctly implement interface methods - ControlValueAccessor ', () => {
             combo = new IgxComboComponent(

projects/igniteui-angular/src/lib/simple-combo/simple-combo.component.spec.ts

@@ -72,6 +72,11 @@ describe('IgxSimpleCombo', () => {
         mockSelection.get.and.returnValue(new Set([]));
         const platformUtil = null;
         const mockDocument = jasmine.createSpyObj('DOCUMENT', [], { 'defaultView': { getComputedStyle: () => null }});
+        jasmine.getEnv().allowRespy(true);
+
+        afterAll(() => {
+            jasmine.getEnv().allowRespy(false);
+        });
 
         it('should properly call dropdown methods on toggle', () => {
             combo = new IgxSimpleComboComponent(
@@ -1910,8 +1915,6 @@ describe('IgxSimpleCombo', () => {
         });
 
         it('should not change selection when selectionChanging event is canceled', () => {
-            spyOn(combo.selectionChanging, 'emit').and.callThrough();
-
             fixture.detectChanges();
 
             combo.select('Connecticut');
@@ -1947,7 +1950,6 @@ describe('IgxSimpleCombo', () => {
 
 
         it('should preserved the input value of the combo when selectionChanging event is canceled', () => {
-            spyOn(combo.selectionChanging, 'emit').and.callThrough();
             fixture.detectChanges();
 
             const comboInput = fixture.debugElement.query(By.css(`.igx-input-group__input`));