JAVA-4529: Rename some unit tests to integration tests

jee-7/src/test/java/com/baeldung/batch/understanding/CustomCheckPointIntegrationTest.java

@@ -12,7 +12,7 @@ import javax.batch.runtime.StepExecution;
 
 import org.junit.jupiter.api.Test;
 
-class CustomCheckPointUnitTest {
+class CustomCheckPointIntegrationTest {
     @Test
     public void givenChunk_whenCustomCheckPoint_thenCommitCountIsThree() throws Exception {
         JobOperator jobOperator = BatchRuntime.getJobOperator();

jee-7/src/test/java/com/baeldung/batch/understanding/JobSequenceIntegrationTest.java

@@ -16,7 +16,7 @@ import javax.batch.runtime.StepExecution;
 
 import org.junit.jupiter.api.Test;
 
-class JobSequenceUnitTest {
+class JobSequenceIntegrationTest {
     @Test
     public void givenTwoSteps_thenBatch_CompleteWithSuccess() throws Exception {
         JobOperator jobOperator = BatchRuntime.getJobOperator();

jee-7/src/test/java/com/baeldung/batch/understanding/SimpleBatchLetIntegrationTest.java

@@ -11,7 +11,7 @@ import javax.batch.runtime.JobExecution;
 
 import org.junit.jupiter.api.Test;
 
-class SimpleBatchLetUnitTest {
+class SimpleBatchLetIntegrationTest {
     @Test
     public void givenBatchLet_thenBatch_CompleteWithSuccess() throws Exception {
         JobOperator jobOperator = BatchRuntime.getJobOperator();

jee-7/src/test/java/com/baeldung/batch/understanding/SimpleChunkIntegrationTest.java

@@ -16,7 +16,7 @@ import javax.batch.runtime.StepExecution;
 
 import org.junit.jupiter.api.Test;
 
-class SimpleChunkUnitTest {
+class SimpleChunkIntegrationTest {
     @Test
     public void givenChunk_thenBatch_CompletesWithSucess() throws Exception {
         JobOperator jobOperator = BatchRuntime.getJobOperator();

jee-7/src/test/java/com/baeldung/batch/understanding/SimpleErrorChunkIntegrationTest.java

@@ -13,7 +13,7 @@ import javax.batch.runtime.StepExecution;
 
 import org.junit.jupiter.api.Test;
 
-class SimpleErrorChunkUnitTest {
+class SimpleErrorChunkIntegrationTest {
 
     @Test
     public void givenChunkError_thenBatch_CompletesWithFailed() throws Exception {