Draft: Add integration tests for benchmarks

Start implementing #166

• add integration test plugin
• setup testcontainers for kafka streams uc
• create example test for uc1

theodolite-benchmarks/buildSrc/src/main/groovy/theodolite.uc-kafka-streams.gradle

@@ -4,6 +4,7 @@ plugins {
 
   // make executable
   id 'application'
+  id 'com.coditory.integration-test' // enable integration tests
 }
 
 repositories {
@@ -26,6 +27,35 @@ dependencies {
     implementation 'org.slf4j:slf4j-simple:1.7.25'
     implementation project(':application-kafkastreams-commons')
 
-    // Use JUnit test framework
-    testImplementation 'junit:junit:4.12'
+    // Tests
+    testImplementation 'org.junit.jupiter:junit-jupiter-api:5.7.1'
+    testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.7.1'
+
+    implementation platform('org.testcontainers:testcontainers-bom:1.15.2') //import bom
+    testImplementation 'org.testcontainers:testcontainers'
+    testImplementation 'org.testcontainers:junit-jupiter'
+    testImplementation 'org.testcontainers:kafka'
+}
+
+tasks.withType(Test) {
+// test {
+    useJUnitPlatform()
+
+    // Log events of tests
+    testLogging {
+        events = ["passed", "failed", "skipped"]
+        exceptionFormat = "full"
+        showStandardStreams = true
+    }
+
+    // Log test summary
+    afterSuite { desc, result ->
+        if (!desc.parent) {
+            println "\nTest result: ${result.resultType}"
+            println "Test summary: ${result.testCount} tests, " +
+                    "${result.successfulTestCount} succeeded, " +
+                    "${result.failedTestCount} failed, " +
+                    "${result.skippedTestCount} skipped"
+        }
+    }
 }