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

Gathers all shared test code in single place.

tests/unit/shared/Stubs/SharedFunctionCollectionStub.ts

@@ -0,0 +1,24 @@
+import { ISharedFunction, FunctionBodyType } from '@/application/Parser/Script/Compiler/Function/ISharedFunction';
+import { ISharedFunctionCollection } from '@/application/Parser/Script/Compiler/Function/ISharedFunctionCollection';
+import { SharedFunctionStub } from './SharedFunctionStub';
+
+export class SharedFunctionCollectionStub implements ISharedFunctionCollection {
+  private readonly functions = new Map<string, ISharedFunction>();
+
+  public withFunction(...funcs: readonly ISharedFunction[]) {
+    for (const func of funcs) {
+      this.functions.set(func.name, func);
+    }
+    return this;
+  }
+
+  public getFunctionByName(name: string): ISharedFunction {
+    if (this.functions.has(name)) {
+      return this.functions.get(name);
+    }
+    return new SharedFunctionStub(FunctionBodyType.Code)
+      .withName(name)
+      .withCode('code by SharedFunctionCollectionStub')
+      .withRevertCode('revert-code by SharedFunctionCollectionStub');
+  }
+}