Replace Assert.assertThat with MatcherAssert.assertThat

Assert.assertThat is deprecated with MatcherAssert.assertThat as the
replacement.

spring-batch-core/src/test/java/org/springframework/batch/core/step/item/FaultTolerantStepFactoryBeanRollbackTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2009-2014 the original author or authors.
+ * Copyright 2009-2020 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.
@@ -53,9 +53,9 @@
 import org.springframework.util.StringUtils;
 
 import static org.hamcrest.CoreMatchers.instanceOf;
+import static org.hamcrest.MatcherAssert.assertThat;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertThat;
 import static org.junit.Assert.assertTrue;
 import static org.springframework.batch.core.BatchStatus.FAILED;
 

spring-batch-infrastructure/src/test/java/org/springframework/batch/item/file/FlatFileItemReaderTests.java

@@ -15,12 +15,12 @@
  */
 package org.springframework.batch.item.file;
 
+import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.endsWith;
 import static org.hamcrest.Matchers.startsWith;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertThat;
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 

spring-batch-infrastructure/src/test/java/org/springframework/batch/item/kafka/KafkaItemReaderTests.java

@@ -43,11 +43,11 @@
 import org.springframework.kafka.test.utils.KafkaTestUtils;
 import org.springframework.util.concurrent.ListenableFuture;
 
+import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.containsInAnyOrder;
 import static org.hamcrest.Matchers.is;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertThat;
 import static org.junit.Assert.fail;
 
 /**

spring-batch-infrastructure/src/test/java/org/springframework/batch/item/xml/AbstractStaxEventWriterItemWriterTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2019 the original author or authors.
+ * Copyright 2010-2020 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.
@@ -43,7 +43,7 @@
 import org.springframework.util.ClassUtils;
 import org.springframework.util.StopWatch;
 
-import static org.junit.Assert.assertThat;
+import static org.hamcrest.MatcherAssert.assertThat;
 
 public abstract class AbstractStaxEventWriterItemWriterTests {
 

spring-batch-infrastructure/src/test/java/org/springframework/batch/item/xml/Jaxb2NamespaceMarshallingTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2019 the original author or authors.
+ * Copyright 2010-2020 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.
@@ -44,7 +44,7 @@
 import org.springframework.util.ClassUtils;
 import org.springframework.util.StopWatch;
 
-import static org.junit.Assert.assertThat;
+import static org.hamcrest.MatcherAssert.assertThat;
 import static org.junit.Assert.assertTrue;
 
 public class Jaxb2NamespaceMarshallingTests {

spring-batch-infrastructure/src/test/java/org/springframework/batch/item/xml/StaxEventItemReaderTests.java

@@ -15,8 +15,8 @@
  */
 package org.springframework.batch.item.xml;
 
+import org.hamcrest.MatcherAssert;
 import org.hamcrest.Matchers;
-import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;
 import org.springframework.batch.item.ExecutionContext;
@@ -634,7 +634,7 @@ public Object unmarshal(Source source) throws XmlMappingException {
 			reader.read();
 			fail("Should fail when XML contains DTD");
 		} catch (Exception e) {
-			Assert.assertThat(e.getMessage(), Matchers.containsString("Undeclared general entity \"entityex\""));
+			MatcherAssert.assertThat(e.getMessage(), Matchers.containsString("Undeclared general entity \"entityex\""));
 		}
 	}