Move to junit5 in all framework tests

- Just a migration
- Replace RedisRule with EnabledOnRedis
- Replace MongoDbRule with EnabledOnMongoDb
- spring-statemachine-test and some docs contains refs to junit4
  but those are support packages and will stay in place.
- Fixes #779
- Relates #771

spring-statemachine-data/mongodb/src/test/java/org/springframework/statemachine/data/mongodb/EnabledOnMongoDb.java

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2019 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.statemachine.data.mongodb;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+import org.junit.jupiter.api.extension.ExtendWith;
+
+@Target({ ElementType.TYPE, ElementType.METHOD })
+@Retention(RetentionPolicy.RUNTIME)
+@Documented
+@ExtendWith(EnabledOnMongoDbCondition.class)
+public @interface EnabledOnMongoDb {
+}

spring-statemachine-data/mongodb/src/test/java/org/springframework/statemachine/data/mongodb/EnabledOnMongoDbCondition.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright 2019 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.statemachine.data.mongodb;
+
+import static org.junit.jupiter.api.extension.ConditionEvaluationResult.disabled;
+import static org.junit.jupiter.api.extension.ConditionEvaluationResult.enabled;
+
+import org.junit.jupiter.api.extension.ConditionEvaluationResult;
+import org.junit.jupiter.api.extension.ExecutionCondition;
+import org.junit.jupiter.api.extension.ExtensionContext;
+import org.springframework.util.SocketUtils;
+
+public class EnabledOnMongoDbCondition implements ExecutionCondition {
+
+	static final ConditionEvaluationResult ENABLED_ON_MONGO = enabled("Mongo DB found");
+
+	static final ConditionEvaluationResult DISABLED_ON_MONGO =	disabled("Mongo DB not found");
+
+	@Override
+	public ConditionEvaluationResult evaluateExecutionCondition(ExtensionContext context) {
+		try {
+			SocketUtils.findAvailableTcpPort(27017, 27017);
+			return DISABLED_ON_MONGO;
+		} catch (Exception e) {
+		}
+		return ENABLED_ON_MONGO;
+	}
+}

spring-statemachine-data/mongodb/src/test/java/org/springframework/statemachine/data/mongodb/MongoDbRepositoryTests.java

@@ -25,8 +25,7 @@ import static org.springframework.statemachine.TestUtils.resolveMachine;
 import java.util.ArrayList;
 import java.util.List;
 
-import org.junit.Rule;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
@@ -50,11 +49,9 @@ import org.springframework.statemachine.transition.TransitionKind;
  *
  * @author Janne Valkealahti
  */
+@EnabledOnMongoDb
 public class MongoDbRepositoryTests extends AbstractRepositoryTests {
 
-	@Rule
-	public MongoDbRule MongoDbAvailableRule = new MongoDbRule();
-
 	@Override
 	protected void cleanInternal() {
 		AnnotationConfigApplicationContext c = new AnnotationConfigApplicationContext();