Discontinue use of JUnit 3 APIs

This commit also ensures that the JSR-330 TCK is executed with the
normal build by adhering to naming conventions for test classes.

See gh-22894

spring-web/src/test/java/org/springframework/http/server/reactive/ContextPathCompositeHandlerTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -30,8 +30,8 @@ import org.springframework.http.HttpStatus;
 import org.springframework.mock.http.server.reactive.test.MockServerHttpRequest;
 import org.springframework.mock.http.server.reactive.test.MockServerHttpResponse;
 
-import static junit.framework.TestCase.assertFalse;
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 
@@ -42,7 +42,6 @@ import static org.junit.Assert.fail;
  */
 public class ContextPathCompositeHandlerTests {
 
-
 	@Test
 	public void invalidContextPath() {
 		testInvalid("  ", "Context path must not be empty");

spring-web/src/test/java/org/springframework/http/server/reactive/ListenerWriteProcessorTests.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.http.server.reactive;
 
 import java.io.IOException;
@@ -26,9 +27,9 @@ import org.reactivestreams.Subscription;
 
 import org.springframework.core.io.buffer.DataBuffer;
 
-import static junit.framework.TestCase.assertEquals;
-import static junit.framework.TestCase.assertNotNull;
-import static junit.framework.TestCase.assertSame;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertSame;
 import static org.mockito.Mockito.mock;
 
 /**

spring-web/src/test/java/org/springframework/http/server/reactive/ServerHttpResponseTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -32,10 +32,10 @@ import org.springframework.core.io.buffer.DefaultDataBufferFactory;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.ResponseCookie;
 
-import static junit.framework.TestCase.assertTrue;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertSame;
+import static org.junit.Assert.assertTrue;
 
 /**
  * @author Rossen Stoyanchev
@@ -43,7 +43,6 @@ import static org.junit.Assert.assertSame;
  */
 public class ServerHttpResponseTests {
 
-
 	@Test
 	public void writeWith() throws Exception {
 		TestServerHttpResponse response = new TestServerHttpResponse();

spring-web/src/test/java/org/springframework/web/bind/support/WebExchangeDataBinderTests.java

@@ -41,9 +41,9 @@ import org.springframework.util.LinkedMultiValueMap;
 import org.springframework.util.MultiValueMap;
 import org.springframework.web.server.ServerWebExchange;
 
-import static junit.framework.TestCase.assertFalse;
 import static org.junit.Assert.assertArrayEquals;
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertTrue;
 import static org.springframework.core.ResolvableType.forClass;

spring-web/src/test/java/org/springframework/web/server/session/InMemoryWebSessionStoreTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.web.server.session;
 
 import java.time.Clock;
@@ -26,10 +27,10 @@ import org.junit.Test;
 import org.springframework.beans.DirectFieldAccessor;
 import org.springframework.web.server.WebSession;
 
-import static junit.framework.TestCase.assertSame;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertSame;
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 

spring-web/src/test/java/org/springframework/web/util/DefaultUriBuilderFactoryTests.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.web.util;
 
 import java.net.URI;
@@ -24,7 +25,7 @@ import org.junit.Test;
 import org.springframework.web.util.DefaultUriBuilderFactory.EncodingMode;
 
 import static java.util.Collections.singletonMap;
-import static junit.framework.TestCase.assertEquals;
+import static org.junit.Assert.assertEquals;
 
 /**
  * Unit tests for {@link DefaultUriBuilderFactory}.