Move stubs from ./stubs to ./shared/Stubs

Gathers all shared test code in single place.

tests/unit/shared/Stubs/ApplicationStub.ts

@@ -0,0 +1,34 @@
+import { IApplication } from '@/domain/IApplication';
+import { ICategoryCollection } from '@/domain/ICategoryCollection';
+import { OperatingSystem } from '@/domain/OperatingSystem';
+import { IProjectInformation } from '@/domain/IProjectInformation';
+import { ProjectInformationStub } from './ProjectInformationStub';
+
+export class ApplicationStub implements IApplication {
+  public info: IProjectInformation = new ProjectInformationStub();
+
+  public collections: ICategoryCollection[] = [];
+
+  public getCollection(operatingSystem: OperatingSystem): ICategoryCollection {
+    return this.collections.find((collection) => collection.os === operatingSystem);
+  }
+
+  public getSupportedOsList(): OperatingSystem[] {
+    return this.collections.map((collection) => collection.os);
+  }
+
+  public withCollection(collection: ICategoryCollection): ApplicationStub {
+    this.collections.push(collection);
+    return this;
+  }
+
+  public withProjectInformation(info: IProjectInformation): ApplicationStub {
+    this.info = info;
+    return this;
+  }
+
+  public withCollections(...collections: readonly ICategoryCollection[]): ApplicationStub {
+    this.collections.push(...collections);
+    return this;
+  }
+}