fix(ivy): ngOnChanges should be inherited from super class (#28563)

PR Close #28563

packages/core/test/acceptance/inherit_definition_feature_spec.ts

@@ -0,0 +1,60 @@
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
+import {Component, Directive, Input, OnChanges, Type} from '@angular/core';
+import {TestBed} from '@angular/core/testing';
+
+describe('ngOnChanges', () => {
+  it('should be inherited when super is a directive', () => {
+    const log: string[] = [];
+
+    @Directive({selector: '[superDir]'})
+    class SuperDirective implements OnChanges {
+      @Input() someInput = '';
+
+      ngOnChanges() { log.push('on changes!'); }
+    }
+
+    @Directive({selector: '[subDir]'})
+    class SubDirective extends SuperDirective {
+    }
+
+    TestBed.configureTestingModule({declarations: [AppComp, SubDirective]});
+    TestBed.overrideComponent(
+        AppComp, {set: new Component({template: '<div subDir [someInput]="1"></div>'})});
+    const fixture = TestBed.createComponent(AppComp);
+    fixture.detectChanges();
+
+    expect(log).toEqual(['on changes!']);
+  });
+
+  it('should be inherited when super is a simple class', () => {
+    const log: string[] = [];
+
+    class SuperClass {
+      ngOnChanges() { log.push('on changes!'); }
+    }
+
+    @Directive({selector: '[subDir]'})
+    class SubDirective extends SuperClass {
+      @Input() someInput = '';
+    }
+
+    TestBed.configureTestingModule({declarations: [AppComp, SubDirective]});
+    TestBed.overrideComponent(
+        AppComp, {set: new Component({template: '<div subDir [someInput]="1"></div>'})});
+    const fixture = TestBed.createComponent(AppComp);
+    fixture.detectChanges();
+
+    expect(log).toEqual(['on changes!']);
+  });
+});
+
+@Component({selector: 'app-comp', template: ``})
+class AppComp {
+}