chore: Add support for Gitlab CI

This change adds the configuration of Gitlab CI in order to test on our
internal Gitlab instance.

3 files changed, 45 insertions, 12 deletions

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
new file mode 100644
index 00000000..a095f7e7
--- /dev/null
+++ b/.gitlab-ci.yml
@@ -0,0 +1,34 @@
+image: gradle:6.1-jdk13
+
+variables:
+    GRADLE_OPTS: "-Dorg.gradle.daemon=false"
+
+before_script:
+    - export GRADLE_USER_HOME=`pwd`/.gradle
+
+stages:
+    - build
+    - test
+
+build:
+    stage: build
+    script:
+        - gradle --build-cache assemble
+    allow_failure: false
+    cache:
+        key: "$CI_COMMIT_REF_NAME"
+        policy: push
+        paths:
+            - build
+            - .gradle
+
+test:
+    stage: test
+    script:
+        - gradle check
+    cache:
+        key: "$CI_COMMIT_REF_NAME"
+        policy: pull
+        paths:
+            - build
+            - .gradle
diff --git a/odcsim/odcsim-engine-omega/src/main/kotlin/com/atlarge/odcsim/engine/omega/OmegaSimulationEngine.kt b/odcsim/odcsim-engine-omega/src/main/kotlin/com/atlarge/odcsim/engine/omega/OmegaSimulationEngine.kt
index 15d3bd88..34e5fd9a 100644
--- a/odcsim/odcsim-engine-omega/src/main/kotlin/com/atlarge/odcsim/engine/omega/OmegaSimulationEngine.kt
+++ b/odcsim/odcsim-engine-omega/src/main/kotlin/com/atlarge/odcsim/engine/omega/OmegaSimulationEngine.kt
@@ -24,7 +24,6 @@
 
 package com.atlarge.odcsim.engine.omega
 
-import com.atlarge.odcsim.SimulationEngine
 import com.atlarge.odcsim.Behavior
 import com.atlarge.odcsim.Channel
 import com.atlarge.odcsim.ProcessContext
@@ -33,6 +32,16 @@ import com.atlarge.odcsim.ReceivePort
 import com.atlarge.odcsim.ReceiveRef
 import com.atlarge.odcsim.SendPort
 import com.atlarge.odcsim.SendRef
+import com.atlarge.odcsim.SimulationEngine
+import java.time.Clock
+import java.time.Instant
+import java.time.ZoneId
+import java.util.PriorityQueue
+import java.util.UUID
+import kotlin.coroutines.Continuation
+import kotlin.coroutines.CoroutineContext
+import kotlin.coroutines.coroutineContext
+import kotlin.coroutines.startCoroutine
 import kotlinx.coroutines.CancellableContinuation
 import kotlinx.coroutines.CoroutineDispatcher
 import kotlinx.coroutines.Delay
@@ -43,15 +52,6 @@ import kotlinx.coroutines.channels.Channel as KChannel
 import kotlinx.coroutines.isActive
 import kotlinx.coroutines.selects.SelectClause1
 import org.jetbrains.annotations.Async
-import java.time.Clock
-import java.time.Instant
-import java.time.ZoneId
-import java.util.PriorityQueue
-import java.util.UUID
-import kotlin.coroutines.Continuation
-import kotlin.coroutines.CoroutineContext
-import kotlin.coroutines.coroutineContext
-import kotlin.coroutines.startCoroutine
 
 /**
  * The reference implementation of the [SimulationEngine] instance for the OpenDC simulation core.
@@ -277,7 +277,6 @@ class OmegaSimulationEngine(rootBehavior: Behavior, override val name: String) :
             check(!closed) { "Port is closed" }
             schedule(Event.Send(clock.time, channelImpl, message))
         }
-
     }
 
     private class ReceivePortImpl<T : Any>(private val channel: ChannelImpl<T>) : ReceivePort<T> {
diff --git a/odcsim/odcsim-engine-omega/src/main/kotlin/com/atlarge/odcsim/engine/omega/OmegaSimulationEngineProvider.kt b/odcsim/odcsim-engine-omega/src/main/kotlin/com/atlarge/odcsim/engine/omega/OmegaSimulationEngineProvider.kt
index b9a1c30f..75bb2265 100644
--- a/odcsim/odcsim-engine-omega/src/main/kotlin/com/atlarge/odcsim/engine/omega/OmegaSimulationEngineProvider.kt
+++ b/odcsim/odcsim-engine-omega/src/main/kotlin/com/atlarge/odcsim/engine/omega/OmegaSimulationEngineProvider.kt
@@ -24,9 +24,9 @@
 
 package com.atlarge.odcsim.engine.omega
 
+import com.atlarge.odcsim.Behavior
 import com.atlarge.odcsim.SimulationEngine
 import com.atlarge.odcsim.SimulationEngineProvider
-import com.atlarge.odcsim.Behavior
 import java.util.ServiceLoader
 
 /**