Update style manager tests

libs/utils/theming/src/lib/style-manager.spec.ts

 import { HttpClientTestingModule } from '@angular/common/http/testing';
 import { inject, TestBed } from '@angular/core/testing';
-import { StyleManager } from './style-manager';
+import { StyleManager, STYLE_MANAGER_CONFIG } from './style-manager';
 
 describe('StyleManager', () => {
   let styleManager: StyleManager;
@@ -8,7 +8,17 @@ describe('StyleManager', () => {
   beforeEach(() =>
     TestBed.configureTestingModule({
       imports: [HttpClientTestingModule],
-      providers: [StyleManager]
+      providers: [
+        StyleManager,
+        {
+          provide: STYLE_MANAGER_CONFIG,
+          useValue: [
+            { name: 'default', primary: '#ffffff', isDark: false, isDefault: true },
+            { name: 'test', primary: '#123456', isDark: false, isDefault: false },
+            { name: 'new', primary: '#000055', isDark: true, isDefault: false }
+          ]
+        }
+      ]
     })
   );
 
@@ -27,30 +37,31 @@ describe('StyleManager', () => {
   });
 
   it('should add stylesheet to head', () => {
-    styleManager.setStyle('test', 'test.css');
-    const styleEl = document.head.querySelector('.style-manager-test') as HTMLLinkElement;
+    styleManager.setCurrentTheme('test');
+    const styleEl = document.head.querySelector('.style-manager-theme') as HTMLLinkElement;
     expect(styleEl).not.toBeNull();
     expect(styleEl.href.endsWith('test.css')).toBe(true);
   });
 
   it('should change existing stylesheet', () => {
-    styleManager.setStyle('test', 'test.css');
-    const styleEl = document.head.querySelector('.style-manager-test') as HTMLLinkElement;
+    styleManager.setCurrentTheme('test');
+    const styleEl = document.head.querySelector('.style-manager-theme') as HTMLLinkElement;
     expect(styleEl).not.toBeNull();
     expect(styleEl.href.endsWith('test.css')).toBe(true);
 
-    styleManager.setStyle('test', 'new.css');
-    expect(styleEl.href.endsWith('new.css')).toBe(true);
+    styleManager.setCurrentTheme('new');
+    const styleEl2 = document.head.querySelector('.style-manager-theme') as HTMLLinkElement;
+    expect(styleEl2.href.endsWith('new.css')).toBe(true);
   });
 
-  it('should remove existing stylesheet', () => {
-    styleManager.setStyle('test', 'test.css');
-    let styleEl = document.head.querySelector('.style-manager-test') as HTMLLinkElement;
+  it('should remove alternate stylesheet', () => {
+    styleManager.setCurrentTheme('test');
+    const styleEl = document.head.querySelector('.style-manager-theme') as HTMLLinkElement;
     expect(styleEl).not.toBeNull();
     expect(styleEl.href.endsWith('test.css')).toBe(true);
 
-    styleManager.removeStyle('test');
-    styleEl = document.head.querySelector('.style-manager-test') as HTMLLinkElement;
-    expect(styleEl).toBeNull();
+    styleManager.setCurrentTheme('default');
+    const styleEl2 = document.head.querySelector('.style-manager-theme') as HTMLLinkElement;
+    expect(styleEl2).toBeNull();
   });
 });