additional theme support tests

src/app/app.component.spec.ts

@@ -1,7 +1,7 @@
 import { Store, StoreModule } from '@ngrx/store';
 import { ComponentFixture, inject, TestBed, waitForAsync } from '@angular/core/testing';
 import { CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
-import { CommonModule } from '@angular/common';
+import { CommonModule, DOCUMENT } from '@angular/common';
 import { ActivatedRoute, Router } from '@angular/router';
 import { TranslateLoader, TranslateModule } from '@ngx-translate/core';
 import { Angulartics2GoogleAnalytics } from 'angulartics2/ga';
@@ -32,7 +32,9 @@ import { storeModuleConfig } from './app.reducer';
 import { LocaleService } from './core/locale/locale.service';
 import { authReducer } from './core/auth/auth.reducer';
 import { provideMockStore } from '@ngrx/store/testing';
-import {GoogleAnalyticsService} from './statistics/google-analytics.service';
+import { GoogleAnalyticsService } from './statistics/google-analytics.service';
+import { ThemeService } from './shared/theme-support/theme.service';
+import { getMockThemeService } from './shared/mocks/theme-service.mock';
 
 let comp: AppComponent;
 let fixture: ComponentFixture<AppComponent>;
@@ -73,6 +75,7 @@ describe('App component', () => {
       { provide: CSSVariableService, useClass: CSSVariableServiceStub },
       { provide: HostWindowService, useValue: new HostWindowServiceStub(800) },
       { provide: LocaleService, useValue: getMockLocaleService() },
+      { provide: ThemeService, useValue: getMockThemeService() },
       provideMockStore({ initialState }),
       AppComponent,
       RouteService
@@ -143,4 +146,32 @@ describe('App component', () => {
       });
     });
   });
+
+  describe('when ThemeService returns a custom theme', () => {
+    let document;
+    let headSpy;
+
+    beforeEach(() => {
+      // NOTE: Cannot override providers once components have been compiled, so TestBed needs to be reset
+      TestBed.resetTestingModule();
+      TestBed.configureTestingModule(defaultTestBedConf);
+      TestBed.overrideProvider(ThemeService, {useValue: getMockThemeService('custom')});
+      document = TestBed.inject(DOCUMENT);
+      headSpy = jasmine.createSpyObj('head', ['appendChild']);
+      spyOn(document, 'getElementsByTagName').and.returnValue([headSpy]);
+      fixture = TestBed.createComponent(AppComponent);
+      comp = fixture.componentInstance;
+      fixture.detectChanges();
+    });
+
+    it('should append a link element with the correct attributes to the head element', () => {
+      const link = document.createElement('link');
+      link.setAttribute('rel', 'stylesheet');
+      link.setAttribute('type', 'text/css');
+      link.setAttribute('class', 'theme-css');
+      link.setAttribute('href', '/custom-theme.css');
+
+      expect(headSpy.appendChild).toHaveBeenCalledWith(link);
+    });
+  });
 });

src/app/shared/mocks/theme-service.mock.ts

@@ -1,7 +1,9 @@
 import { ThemeService } from '../theme-support/theme.service';
+import { of as observableOf } from 'rxjs';
 
-export function getMockThemeService(): ThemeService {
+export function getMockThemeService(themeName = 'base'): ThemeService {
   return jasmine.createSpyObj('themeService', {
-    getThemeName: 'base'
+    getThemeName: themeName,
+    getThemeName$: observableOf(themeName)
   });
 }

src/app/shared/theme-support/test/custom/themed-test.component.spec.ts

@@ -0,0 +1,11 @@
+import { Component } from '@angular/core';
+
+// noinspection AngularMissingOrInvalidDeclarationInModule
+@Component({
+  selector: 'ds-test-component',
+  template: ''
+})
+export class TestComponent {
+  type = 'themed';
+  testInput = 'unset';
+}

src/app/shared/theme-support/test/test.component.spec.ts

@@ -0,0 +1,11 @@
+import { Component } from '@angular/core';
+
+// noinspection AngularMissingOrInvalidDeclarationInModule
+@Component({
+  selector: 'ds-test-component',
+  template: ''
+})
+export class TestComponent {
+  type = 'default';
+  testInput = 'unset';
+}

src/app/shared/theme-support/theme.effects.spec.ts

@@ -1,9 +1,8 @@
 import { ThemeEffects } from './theme.effects';
-import { Observable } from 'rxjs';
+import { of as observableOf } from 'rxjs';
 import { TestBed } from '@angular/core/testing';
 import { provideMockActions } from '@ngrx/effects/testing';
 import { LinkService } from '../../core/cache/builders/link.service';
-import { getMockLinkService } from '../mocks/link-service.mock';
 import { cold, hot } from 'jasmine-marbles';
 import { ROOT_EFFECTS_INIT } from '@ngrx/effects';
 import { SetThemeAction } from './theme.actions';
@@ -19,43 +18,91 @@ import { DSpaceObject } from '../../core/shared/dspace-object.model';
 import { Item } from '../../core/shared/item.model';
 import { Collection } from '../../core/shared/collection.model';
 import { COLLECTION } from '../../core/shared/collection.resource-type';
+import {
+  createNoContentRemoteDataObject$,
+  createSuccessfulRemoteDataObject$
+} from '../remote-data.utils';
 import { BASE_THEME_NAME } from './theme.constants';
 
+/**
+ * LinkService able to mock recursively resolving DSO parent links
+ * Every time resolveLinkWithoutAttaching is called, it returns the next object in the array of ancestorDSOs until
+ * none are left, after which it returns a no-content remote-date
+ */
+class MockLinkService {
+  index = -1;
+
+  constructor(private ancestorDSOs: DSpaceObject[]) {
+  }
+
+  resolveLinkWithoutAttaching() {
+    if (this.index >= this.ancestorDSOs.length - 1) {
+      return createNoContentRemoteDataObject$();
+    } else {
+      this.index++;
+      return createSuccessfulRemoteDataObject$(this.ancestorDSOs[this.index]);
+    }
+  }
+}
+
 describe('ThemeEffects', () => {
   let themeEffects: ThemeEffects;
   let linkService: LinkService;
   let initialState;
-  let actions: Observable<any>;
+
+  let ancestorDSOs: DSpaceObject[];
 
   function init() {
-    linkService = getMockLinkService();
+    ancestorDSOs = [
+      Object.assign(new Collection(), {
+        type: COLLECTION.value,
+        uuid: 'collection-uuid',
+        _links: { owningCommunity: { href: 'owning-community-link' } }
+      }),
+      Object.assign(new Community(), {
+        type: COMMUNITY.value,
+        uuid: 'sub-community-uuid',
+        _links: { parentCommunity: { href: 'parent-community-link' } }
+      }),
+      Object.assign(new Community(), {
+        type: COMMUNITY.value,
+        uuid: 'top-community-uuid',
+      }),
+    ];
+    linkService = new MockLinkService(ancestorDSOs) as any;
     initialState = {
+      theme: {
         currentTheme: 'custom',
+      },
     };
   }
 
-  beforeEach(() => {
+  function setupEffectsWithActions(mockActions) {
     init();
     TestBed.configureTestingModule({
       providers: [
         ThemeEffects,
         { provide: LinkService, useValue: linkService },
         provideMockStore({ initialState }),
-        provideMockActions(() => actions)
+        provideMockActions(() => mockActions)
       ]
     });
 
     themeEffects = TestBed.inject(ThemeEffects);
-  });
+  }
 
   describe('initTheme$', () => {
-    it('should set the default theme', () => {
+    beforeEach(() => {
-      actions = hot('--a-', {
+      setupEffectsWithActions(
+        hot('--a-', {
           a: {
             type: ROOT_EFFECTS_INIT
           }
+        })
+      );
     });
 
+    it('should set the default theme', () => {
       const expected = cold('--b-', {
         b: new SetThemeAction(BASE_THEME_NAME)
       });
@@ -64,15 +111,23 @@ describe('ThemeEffects', () => {
     });
   });
 
-  // TODO: Fix test
+  describe('updateThemeOnRouteChange$', () => {
-  xdescribe('updateThemeOnRouteChange$', () => {
-    it('test', () => {
     const url = '/test/route';
     const dso = Object.assign(new Community(), {
       type: COMMUNITY.value,
       uuid: '0958c910-2037-42a9-81c7-dca80e3892b4',
     });
-      actions = hot('--ab-', {
+
+    function spyOnPrivateMethods() {
+      spyOn((themeEffects as any), 'getAncestorDSOs').and.returnValue(() => observableOf([dso]));
+      spyOn((themeEffects as any), 'matchThemeToDSOs').and.returnValue(new Theme({ name: 'custom' }));
+      spyOn((themeEffects as any), 'getActionForMatch').and.returnValue(new SetThemeAction('custom'));
+    }
+
+    describe('when a resolved action is present', () => {
+      beforeEach(() => {
+        setupEffectsWithActions(
+          hot('--ab-', {
             a: {
               type: ROUTER_NAVIGATED,
               payload: { routerState: { url } },
@@ -81,25 +136,79 @@ describe('ThemeEffects', () => {
               type: ResolverActionTypes.RESOLVED,
               payload: { url, dso },
             }
+          })
+        );
+        spyOnPrivateMethods();
       });
 
+      it('should set the theme it receives from the DSO', () => {
         const expected = cold('--b-', {
-        b: new SetThemeAction('Publications community (uuid)')
+          b: new SetThemeAction('custom')
         });
 
-      expect(themeEffects.initTheme$).toBeObservable(expected);
+        expect(themeEffects.updateThemeOnRouteChange$).toBeObservable(expected);
       });
     });
 
+    describe('when no resolved action is present', () => {
+      beforeEach(() => {
+        setupEffectsWithActions(
+          hot('--a-', {
+            a: {
+              type: ROUTER_NAVIGATED,
+              payload: { routerState: { url } },
+            },
+          })
+        );
+        spyOnPrivateMethods();
+      });
+
+      it('should set the theme it receives from the route url', () => {
+        const expected = cold('--b-', {
+          b: new SetThemeAction('custom')
+        });
+
+        expect(themeEffects.updateThemeOnRouteChange$).toBeObservable(expected);
+      });
+    });
+
+    describe('when no themes are present', () => {
+      beforeEach(() => {
+        setupEffectsWithActions(
+          hot('--a-', {
+            a: {
+              type: ROUTER_NAVIGATED,
+              payload: { routerState: { url } },
+            },
+          })
+        );
+        (themeEffects as any).themes = [];
+      });
+
+      it('should return an empty action', () => {
+        const expected = cold('--b-', {
+          b: new NoOpAction()
+        });
+
+        expect(themeEffects.updateThemeOnRouteChange$).toBeObservable(expected);
+      });
+    });
+  });
+
+  describe('private functions', () => {
+    beforeEach(() => {
+      setupEffectsWithActions(hot('-', {}));
+    });
+
     describe('getActionForMatch', () => {
-    it('should return a SET action if the name doesn\'t match', () => {
+      it('should return a SET action if the new theme differs from the current theme', () => {
         const theme = new Theme({ name: 'new-theme' });
-      expect((themeEffects as any).getActionForMatch(theme, 'not-matching')).toEqual(new SetThemeAction('new-theme'));
+        expect((themeEffects as any).getActionForMatch(theme, 'old-theme')).toEqual(new SetThemeAction('new-theme'));
       });
 
-    it('should return an empty action if the name matches', () => {
+      it('should return an empty action if the new theme equals the current theme', () => {
-      const theme = new Theme({ name: 'new-theme' });
+        const theme = new Theme({ name: 'old-theme' });
-      expect((themeEffects as any).getActionForMatch(theme, 'new-theme')).toEqual(new NoOpAction());
+        expect((themeEffects as any).getActionForMatch(theme, 'old-theme')).toEqual(new NoOpAction());
       });
     });
 
@@ -170,4 +279,36 @@ describe('ThemeEffects', () => {
         });
       });
     });
+
+    describe('getAncestorDSOs', () => {
+      it('should return an array of the provided DSO and its ancestors', (done) => {
+        const dso = Object.assign(new Item(), {
+          type: ITEM.value,
+          uuid: 'item-uuid',
+          _links: { owningCollection: { href: 'owning-collection-link' } },
+        });
+
+        observableOf(dso).pipe(
+          (themeEffects as any).getAncestorDSOs()
+        ).subscribe((result) => {
+          expect(result).toEqual([dso, ...ancestorDSOs]);
+          done();
+        });
+      });
+
+      it('should return an array of just the provided DSO if it doesn\'t have any parents', (done) => {
+        const dso = {
+          type: ITEM.value,
+          uuid: 'item-uuid',
+        };
+
+        observableOf(dso).pipe(
+          (themeEffects as any).getAncestorDSOs()
+        ).subscribe((result) => {
+          expect(result).toEqual([dso]);
+          done();
+        });
+      });
+    });
+  });
 });

src/app/shared/theme-support/themed.component.spec.ts

@@ -0,0 +1,97 @@
+import { ThemedComponent } from './themed.component';
+import { Component, NO_ERRORS_SCHEMA } from '@angular/core';
+import { ComponentFixture, TestBed, waitForAsync } from '@angular/core/testing';
+import { VarDirective } from '../utils/var.directive';
+import { ThemeService } from './theme.service';
+import { getMockThemeService } from '../mocks/theme-service.mock';
+import { TestComponent } from './test/test.component.spec';
+
+/* tslint:disable:max-classes-per-file */
+@Component({
+  selector: 'ds-test-themed-component',
+  templateUrl: './themed.component.html'
+})
+class TestThemedComponent extends ThemedComponent<TestComponent> {
+  protected inAndOutputNames: (keyof TestComponent & keyof this)[] = ['testInput'];
+
+  testInput = 'unset';
+
+  protected getComponentName(): string {
+    return 'TestComponent';
+  }
+  protected importThemedComponent(themeName: string): Promise<any> {
+    return import(`./test/${themeName}/themed-test.component.spec`);
+  }
+  protected importUnthemedComponent(): Promise<any> {
+    return import('./test/test.component.spec');
+  }
+}
+
+describe('ThemedComponent', () => {
+  let component: TestThemedComponent;
+  let fixture: ComponentFixture<TestThemedComponent>;
+  let themeService: ThemeService;
+
+  function setupTestingModuleForTheme(theme: string) {
+    themeService = getMockThemeService(theme);
+    TestBed.configureTestingModule({
+      imports: [],
+      declarations: [TestThemedComponent, VarDirective],
+      providers: [
+        { provide: ThemeService, useValue: themeService },
+      ],
+      schemas: [NO_ERRORS_SCHEMA]
+    }).compileComponents();
+  }
+
+  describe('when the current theme matches a themed component', () => {
+    beforeEach(waitForAsync(() => {
+      setupTestingModuleForTheme('custom');
+    }));
+
+    beforeEach(() => {
+      fixture = TestBed.createComponent(TestThemedComponent);
+      component = fixture.componentInstance;
+      component.testInput = 'changed';
+      fixture.detectChanges();
+    });
+
+    it('should set compRef to the themed component', waitForAsync(() => {
+      fixture.whenStable().then(() => {
+        expect((component as any).compRef.instance.type).toEqual('themed');
+      });
+    }));
+
+    it('should sync up this component\'s input with the themed component', waitForAsync(() => {
+      fixture.whenStable().then(() => {
+        expect((component as any).compRef.instance.testInput).toEqual('changed');
+      });
+    }));
+  });
+
+  describe('when the current theme doesn\'t match a themed component', () => {
+    beforeEach(waitForAsync(() => {
+      setupTestingModuleForTheme('non-existing-theme');
+    }));
+
+    beforeEach(() => {
+      fixture = TestBed.createComponent(TestThemedComponent);
+      component = fixture.componentInstance;
+      component.testInput = 'changed';
+      fixture.detectChanges();
+    });
+
+    it('should set compRef to the default component', waitForAsync(() => {
+      fixture.whenStable().then(() => {
+        expect((component as any).compRef.instance.type).toEqual('default');
+      });
+    }));
+
+    it('should sync up this component\'s input with the default component', waitForAsync(() => {
+      fixture.whenStable().then(() => {
+        expect((component as any).compRef.instance.testInput).toEqual('changed');
+      });
+    }));
+  });
+});
+/* tslint:enable:max-classes-per-file */

src/environments/mock-environment.ts

@@ -194,34 +194,27 @@ export const environment: Partial<GlobalConfig> = {
   },
   themes: [
     {
-      // name: 'default',
       name: 'full-item-page-theme',
       regex: 'items/aa6c6c83-3a83-4953-95d1-2bc2e67854d2/full'
     },
     {
-      // name: 'default',
       name: 'error-theme',
       regex: 'collections/aaaa.*'
     },
     {
-      // name: 'default',
       name: 'Item (handle)',
-      handle: '10673/1233' // Item inside publications community
+      handle: '10673/1233'
     },
     {
-      // name: 'mantis',
       name: 'blue',
-      regex: 'collections\/e8043bc2.*' // Publications/Thesis collections
+      regex: 'collections\/e8043bc2.*'
     },
     {
-      // name: 'mantis',
       name: 'Publications community (uuid)',
-      uuid: '0958c910-2037-42a9-81c7-dca80e3892b4' // Publications community
+      uuid: '0958c910-2037-42a9-81c7-dca80e3892b4'
     },
     {
-      // name: 'default',
       name: 'base',
-      // name: 'blue',
     },
   ],
 };