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

Gathers all shared test code in single place.

tests/unit/shared/Stubs/FunctionParameterCollectionStub.ts

@@ -0,0 +1,30 @@
+import { IFunctionParameter } from '@/application/Parser/Script/Compiler/Function/Parameter/IFunctionParameter';
+import { IFunctionParameterCollection } from '@/application/Parser/Script/Compiler/Function/Parameter/IFunctionParameterCollection';
+import { FunctionParameterStub } from './FunctionParameterStub';
+
+export class FunctionParameterCollectionStub implements IFunctionParameterCollection {
+  private parameters = new Array<IFunctionParameter>();
+
+  public addParameter(parameter: IFunctionParameter): void {
+    this.parameters.push(parameter);
+  }
+
+  public get all(): readonly IFunctionParameter[] {
+    return this.parameters;
+  }
+
+  public withParameterName(parameterName: string, isOptional = true) {
+    const parameter = new FunctionParameterStub()
+      .withName(parameterName)
+      .withOptionality(isOptional);
+    this.addParameter(parameter);
+    return this;
+  }
+
+  public withParameterNames(parameterNames: readonly string[], isOptional = true) {
+    for (const parameterName of parameterNames) {
+      this.withParameterName(parameterName, isOptional);
+    }
+    return this;
+  }
+}