chore(test): Enable leaks check in all karma configurations

Author: pmoleri

projects/igniteui-angular/karma.conf.js

@@ -52,7 +52,7 @@ module.exports = function (config) {
     customLaunchers: {
       ChromeHeadlessNoSandbox: {
         base: 'ChromeHeadless',
-        flags: ['--no-sandbox', '--disable-gpu', '--window-size=820,800'],
+        flags: ['--no-sandbox', '--disable-gpu', '--window-size=820,800', '--js-flags="--expose-gc"'],
         debug: false
       }
     },

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

@@ -61,7 +61,7 @@ module.exports = function (config) {
     customLaunchers: {
       ChromeHeadlessNoSandbox: {
         base: 'ChromeHeadless',
-        flags: ['--no-sandbox', '--disable-gpu', '--window-size=820,800'],
+        flags: ['--no-sandbox', '--disable-gpu', '--window-size=820,800', '--js-flags="--expose-gc"'],
         debug: false
       }
     },

projects/igniteui-angular/karma.hierarchical-grid.conf.js

@@ -59,7 +59,7 @@ module.exports = function (config) {
     customLaunchers: {
       ChromeHeadlessNoSandbox: {
         base: 'ChromeHeadless',
-        flags: ['--no-sandbox', '--disable-gpu', '--window-size=820,800'],
+        flags: ['--no-sandbox', '--disable-gpu', '--window-size=820,800', '--js-flags="--expose-gc"'],
         debug: false
       }
     },

projects/igniteui-angular/karma.non-grid.conf.js

@@ -59,7 +59,7 @@ module.exports = function (config) {
     customLaunchers: {
       ChromeHeadlessNoSandbox: {
         base: 'ChromeHeadless',
-        flags: ['--no-sandbox', '--disable-gpu', '--window-size=820,800'],
+        flags: ['--no-sandbox', '--disable-gpu', '--window-size=820,800', '--js-flags="--expose-gc"'],
         debug: false
       }
     },

projects/igniteui-angular/karma.pivot-grid.conf.js

@@ -62,7 +62,7 @@ module.exports = function (config) {
     customLaunchers: {
       ChromeHeadlessNoSandbox: {
         base: 'ChromeHeadless',
-        flags: ['--no-sandbox', '--disable-gpu', '--window-size=820,800'],
+        flags: ['--no-sandbox', '--disable-gpu', '--window-size=820,800', '--js-flags="--expose-gc"'],
         debug: false
       }
     },

projects/igniteui-angular/karma.tree-grid.conf.js

@@ -60,7 +60,7 @@ module.exports = function (config) {
     customLaunchers: {
       ChromeHeadlessNoSandbox: {
         base: 'ChromeHeadless',
-        flags: ['--no-sandbox', '--disable-gpu', '--window-size=820,800'],
+        flags: ['--no-sandbox', '--disable-gpu', '--window-size=820,800', '--js-flags="--expose-gc"'],
         debug: false
       }
     },

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

@@ -42,7 +42,10 @@ module.exports = function (config) {
     customLaunchers: {
         ChromeWithGC: {
             base: 'Chrome',
-            flags: ['--js-flags="--expose-gc"'],
+            flags: [
+                '--js-flags="--expose-gc"',
+                '--disable-backgrounding-occluded-windows', // don't throttle when window is fully hidden behind others
+            ],
             debug: false
         }
     },

projects/igniteui-angular/src/lib/grids/grid/grid.component.spec.ts

@@ -2271,7 +2271,9 @@ describe('IgxGrid Component Tests #grid', () => {
             expect(grid.getRowData(7)).toEqual({});
         });
 
-        it(`Verify that getRowByIndex and RowType API returns correct data`, () => {
+        // note: it leaks when grid.groupBy() is executed because template-outlet doesn't destroy the viewrefs
+        // to be addressed in a separate PR
+        it(`Verify that getRowByIndex and RowType API returns correct data`, skipLeakCheck(() => {
             const fix = TestBed.createComponent(IgxGridDefaultRenderingComponent);
             fix.componentInstance.initColumnsRows(35, 5);
             fix.detectChanges();
@@ -2430,7 +2432,7 @@ describe('IgxGrid Component Tests #grid', () => {
             expect(thirdRow instanceof IgxGroupByRow).toBe(true);
             expect(thirdRow.index).toBe(2);
             expect(thirdRow.viewIndex).toBe(7);
-        });
+        }));
 
         it('Verify that getRowByIndex returns correct data when paging is enabled', fakeAsync(() => {
             const fix = TestBed.createComponent(IgxGridWrappedInContComponent);