#80 started tests

Author: Malte Jörgens

src/test/java/com/arangodb/springframework/ArangoTransactionalTestConfiguration.java

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+package com.arangodb.springframework;
+
+import com.arangodb.springframework.repository.query.QueryTransactionBridge;
+import com.arangodb.springframework.transaction.ArangoTransactionManager;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.TestExecutionListeners;
+import org.springframework.test.context.transaction.TransactionalTestExecutionListener;
+import org.springframework.transaction.annotation.EnableTransactionManagement;
+
+@EnableTransactionManagement
+@TestExecutionListeners(TransactionalTestExecutionListener.class)
+@Import(ArangoTransactionManager.class)
+public class ArangoTransactionalTestConfiguration extends ArangoTestConfiguration {
+
+	@Bean
+	public QueryTransactionBridge queryTransactionBridge() {
+		return new QueryTransactionBridge();
+	}
+}

src/test/java/com/arangodb/springframework/transaction/ArangoTransactionManagerRepositoryTest.java

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+package com.arangodb.springframework.transaction;
+
+import com.arangodb.springframework.AbstractArangoTest;
+import com.arangodb.springframework.ArangoTransactionalTestConfiguration;
+import com.arangodb.springframework.repository.HumanBeingRepository;
+import com.arangodb.springframework.testdata.HumanBeing;
+import org.junit.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.transaction.TestTransaction;
+import org.springframework.transaction.annotation.Transactional;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
+
+@ContextConfiguration(classes = { ArangoTransactionalTestConfiguration.class })
+public class ArangoTransactionManagerRepositoryTest extends AbstractArangoTest {
+
+	private final HumanBeing anakin = new HumanBeing("Anakin", "Skywalker", false);
+
+	@Autowired
+	private HumanBeingRepository humanBeingRepository;
+
+	@Test
+	public void shouldWorkWithoutTransaction() {
+		assertDoesNotThrow(() -> humanBeingRepository.save(anakin));
+	}
+
+	@Test
+	@Transactional
+	public void shouldWorkWithinTransaction() {
+		TestTransaction.flagForCommit();
+		assertDoesNotThrow(() -> humanBeingRepository.save(anakin));
+	}
+
+	@Test
+	@Transactional
+	public void shouldRollbackWithinTransaction() {
+		humanBeingRepository.save(anakin);
+		TestTransaction.flagForRollback();
+		TestTransaction.end();
+
+		assertThat(humanBeingRepository.findByNameAndSurname(anakin.getName(), anakin.getSurname())).isNotPresent();
+	}
+}