test: improve test coverage throughout (#45)

Author: AlexZangerle

build.gradle.kts

@@ -100,8 +100,12 @@ dependencies {
 
   testImplementation(platform("org.junit:junit-bom:5.9.1"))
   testImplementation("org.junit.jupiter:junit-jupiter")
+  testImplementation("org.junit-pioneer:junit-pioneer:2.2.0")
 
   testImplementation("org.mockito:mockito-core:5.11.0")
+  testImplementation("org.mockito:mockito-inline:5.2.0")
+  testImplementation("org.mockito.kotlin:mockito-kotlin:5.3.1")
+
   implementation(kotlin("stdlib-jdk8"))
 }
 

src/main/java/at/ac/uibk/dps/cirrina/cirrina/Runtime.kt

@@ -54,6 +54,13 @@ class Runtime(
   fun findInstance(stateMachineId: Id): StateMachine? =
     stateMachines.firstOrNull { it.stateMachineInstanceId == stateMachineId }
 
+  /**
+   * Get all current state machine instances.
+   *
+   * @return A list of state machine instances.
+   */
+  fun getAllInstances(): List<StateMachine> = stateMachines
+
   /**
    * Run the specified state machines defined in a CSML project.
    *