test(architecture): add clean architecture test

Author: andrea-acampora

src/test/kotlin/architecture/CleanArchitectureTest.kt

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2023. Smart Operating Block
+ *
+ * Use of this source code is governed by an MIT-style
+ * license that can be found in the LICENSE file or at
+ * https://opensource.org/licenses/MIT.
+ */
+
+package architecture
+
+import com.tngtech.archunit.core.importer.ClassFileImporter
+import com.tngtech.archunit.library.Architectures.layeredArchitecture
+import io.kotest.core.spec.style.StringSpec
+
+class CleanArchitectureTest : StringSpec({
+    "Test that the layers of Clean Architecture are respected" {
+        layeredArchitecture()
+            .consideringAllDependencies()
+            .layer("entity").definedBy("..entity..")
+            .layer("usecase").definedBy("..usecase..")
+            .layer("application").definedBy("..application..")
+            .layer("infrastructure").definedBy("..infrastructure..")
+            .whereLayer("entity").mayOnlyBeAccessedByLayers("usecase", "application", "infrastructure")
+            .whereLayer("usecase").mayOnlyBeAccessedByLayers("application", "infrastructure")
+            .whereLayer("application").mayOnlyBeAccessedByLayers("infrastructure")
+            .whereLayer("infrastructure").mayNotBeAccessedByAnyLayer()
+            .check(
+                ClassFileImporter()
+                    .withImportOption { !it.contains("/test/") } // ignore tests classes
+                    .importPackages("entity", "usecase", "application", "infrastructure")
+            )
+    }
+})