Use assertThat from Hamcrest instead of JUnit 4

org.junit.Assert.assertThat() is deprecated as of JUnit 4.13.

See gh-22894

spring-jdbc/src/test/java/org/springframework/jdbc/config/JdbcNamespaceIntegrationTests.java

@@ -40,6 +40,7 @@ import org.springframework.tests.Assume;
 import org.springframework.tests.TestGroup;
 
 import static org.hamcrest.CoreMatchers.*;
+import static org.hamcrest.MatcherAssert.assertThat;
 import static org.junit.Assert.*;
 import static org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseFactory.*;
 

spring-jdbc/src/test/java/org/springframework/jdbc/core/JdbcTemplateTests.java

@@ -54,6 +54,7 @@ import org.springframework.jdbc.support.SQLStateSQLExceptionTranslator;
 import org.springframework.util.LinkedCaseInsensitiveMap;
 import org.springframework.util.StringUtils;
 
+import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.*;
 import static org.junit.Assert.*;
 import static org.mockito.BDDMockito.*;

spring-jdbc/src/test/java/org/springframework/jdbc/core/namedparam/BeanPropertySqlParameterSourceTests.java

@@ -24,6 +24,7 @@ import org.junit.Test;
 
 import org.springframework.tests.sample.beans.TestBean;
 
+import static org.hamcrest.MatcherAssert.assertThat;
 import static org.junit.Assert.*;
 
 /**

spring-jdbc/src/test/java/org/springframework/jdbc/core/support/SqlLobValueTests.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.jdbc.core.support;
 
 import java.io.ByteArrayInputStream;
@@ -33,6 +34,7 @@ import org.mockito.MockitoAnnotations;
 import org.springframework.jdbc.support.lob.LobCreator;
 import org.springframework.jdbc.support.lob.LobHandler;
 
+import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.*;
 import static org.junit.Assert.*;
 import static org.mockito.BDDMockito.*;

spring-jdbc/src/test/java/org/springframework/jdbc/datasource/DelegatingDataSourceTests.java

@@ -23,8 +23,8 @@ import javax.sql.DataSource;
 
 import org.junit.Test;
 
+import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.*;
-import static org.junit.Assert.*;
 import static org.mockito.BDDMockito.*;
 
 /**

spring-jdbc/src/test/java/org/springframework/jdbc/datasource/init/AbstractDatabaseInitializationTests.java

@@ -27,8 +27,8 @@ import org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseBuilder;
 import org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseType;
 import org.springframework.transaction.support.TransactionSynchronizationManager;
 
+import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.*;
-import static org.junit.Assert.*;
 
 /**
  * Abstract base class for integration tests involving database initialization.

spring-jdbc/src/test/java/org/springframework/jdbc/datasource/init/AbstractDatabasePopulatorTests.java

@@ -25,6 +25,7 @@ import org.springframework.jdbc.datasource.DataSourceUtils;
 import org.springframework.transaction.support.TransactionSynchronizationManager;
 
 import static org.hamcrest.Matchers.*;
+import static org.hamcrest.MatcherAssert.assertThat;
 import static org.junit.Assert.*;
 import static org.mockito.Mockito.*;
 

spring-jdbc/src/test/java/org/springframework/jdbc/datasource/init/H2DatabasePopulatorTests.java

@@ -19,8 +19,8 @@ package org.springframework.jdbc.datasource.init;
 import org.junit.Test;
 import org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseType;
 
+import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.*;
-import static org.junit.Assert.*;
 
 /**
  * @author Sam Brannen

spring-jdbc/src/test/java/org/springframework/jdbc/object/SqlQueryTests.java

@@ -41,6 +41,7 @@ import org.springframework.jdbc.core.SqlParameter;
 import org.springframework.lang.Nullable;
 import org.springframework.util.StringUtils;
 
+import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.*;
 import static org.junit.Assert.*;
 import static org.mockito.BDDMockito.*;

spring-jdbc/src/test/java/org/springframework/jdbc/support/SQLErrorCodesFactoryTests.java

@@ -28,6 +28,7 @@ import org.springframework.core.io.ClassPathResource;
 import org.springframework.core.io.Resource;
 
 import static org.hamcrest.CoreMatchers.*;
+import static org.hamcrest.MatcherAssert.assertThat;
 import static org.junit.Assert.*;
 import static org.mockito.BDDMockito.*;
 

spring-jdbc/src/test/java/org/springframework/jdbc/support/SQLExceptionCustomTranslatorTests.java

@@ -25,6 +25,7 @@ import org.springframework.dao.TransientDataAccessResourceException;
 import org.springframework.jdbc.BadSqlGrammarException;
 
 import static org.hamcrest.CoreMatchers.*;
+import static org.hamcrest.MatcherAssert.assertThat;
 import static org.junit.Assert.*;
 
 /**