Polish tests

Closes gh-26708

spring-orm/src/test/java/org/springframework/orm/jpa/AbstractContainerEntityManagerFactoryIntegrationTests.java

 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2021 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.
@@ -224,8 +224,7 @@ public abstract class AbstractContainerEntityManagerFactoryIntegrationTests
 		q.setFlushMode(FlushModeType.AUTO);
 		List<Person> people = q.getResultList();
 		assertThat(people.size()).isEqualTo(0);
-		assertThatExceptionOfType(Exception.class).isThrownBy(() ->
-				q.getSingleResult())
+		assertThatExceptionOfType(Exception.class).isThrownBy(q::getSingleResult)
 			.withMessageContaining("closed");
 		// We would typically expect an IllegalStateException, but Hibernate throws a
 		// PersistenceException. So we assert the contents of the exception message instead.

spring-web/src/test/java/org/springframework/http/HttpEntityTests.java

 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2021 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.
@@ -31,7 +31,7 @@ import static org.assertj.core.api.Assertions.assertThat;
 public class HttpEntityTests {
 
 	@Test
-	public void noHeaders() {
+	void noHeaders() {
 		String body = "foo";
 		HttpEntity<String> entity = new HttpEntity<>(body);
 		assertThat(entity.getBody()).isSameAs(body);
@@ -39,7 +39,7 @@ public class HttpEntityTests {
 	}
 
 	@Test
-	public void httpHeaders() {
+	void httpHeaders() {
 		HttpHeaders headers = new HttpHeaders();
 		headers.setContentType(MediaType.TEXT_PLAIN);
 		String body = "foo";
@@ -50,7 +50,7 @@ public class HttpEntityTests {
 	}
 
 	@Test
-	public void multiValueMap() {
+	void multiValueMap() {
 		MultiValueMap<String, String> map = new LinkedMultiValueMap<>();
 		map.set("Content-Type", "text/plain");
 		String body = "foo";
@@ -61,30 +61,30 @@ public class HttpEntityTests {
 	}
 
 	@Test
-	public void testEquals() {
+	void testEquals() {
 		MultiValueMap<String, String> map1 = new LinkedMultiValueMap<>();
 		map1.set("Content-Type", "text/plain");
 
 		MultiValueMap<String, String> map2 = new LinkedMultiValueMap<>();
 		map2.set("Content-Type", "application/json");
 
-		assertThat(new HttpEntity<>().equals(new HttpEntity<Object>())).isTrue();
-		assertThat(new HttpEntity<>(map1).equals(new HttpEntity<Object>())).isFalse();
-		assertThat(new HttpEntity<>().equals(new HttpEntity<Object>(map2))).isFalse();
+		assertThat(new HttpEntity<>().equals(new HttpEntity<>())).isTrue();
+		assertThat(new HttpEntity<>(map1).equals(new HttpEntity<>())).isFalse();
+		assertThat(new HttpEntity<>().equals(new HttpEntity<>(map2))).isFalse();
 
-		assertThat(new HttpEntity<>(map1).equals(new HttpEntity<Object>(map1))).isTrue();
-		assertThat(new HttpEntity<>(map1).equals(new HttpEntity<Object>(map2))).isFalse();
+		assertThat(new HttpEntity<>(map1).equals(new HttpEntity<>(map1))).isTrue();
+		assertThat(new HttpEntity<>(map1).equals(new HttpEntity<>(map2))).isFalse();
 
 		assertThat(new HttpEntity<String>(null, null).equals(new HttpEntity<String>(null, null))).isTrue();
 		assertThat(new HttpEntity<>("foo", null).equals(new HttpEntity<String>(null, null))).isFalse();
 		assertThat(new HttpEntity<String>(null, null).equals(new HttpEntity<>("bar", null))).isFalse();
 
-		assertThat(new HttpEntity<>("foo", map1).equals(new HttpEntity<String>("foo", map1))).isTrue();
-		assertThat(new HttpEntity<>("foo", map1).equals(new HttpEntity<String>("bar", map1))).isFalse();
+		assertThat(new HttpEntity<>("foo", map1).equals(new HttpEntity<>("foo", map1))).isTrue();
+		assertThat(new HttpEntity<>("foo", map1).equals(new HttpEntity<>("bar", map1))).isFalse();
 	}
 
 	@Test
-	public void responseEntity() {
+	void responseEntity() {
 		HttpHeaders headers = new HttpHeaders();
 		headers.setContentType(MediaType.TEXT_PLAIN);
 		String body = "foo";
@@ -104,7 +104,7 @@ public class HttpEntityTests {
 	}
 
 	@Test
-	public void requestEntity() throws Exception {
+	void requestEntity() throws Exception {
 		HttpHeaders headers = new HttpHeaders();
 		headers.setContentType(MediaType.TEXT_PLAIN);
 		String body = "foo";

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

 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2021 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.
@@ -45,20 +45,20 @@ public class ServletServerHttpRequestTests {
 
 
 	@BeforeEach
-	public void create() {
+	void create() {
 		mockRequest = new MockHttpServletRequest();
 		request = new ServletServerHttpRequest(mockRequest);
 	}
 
 
 	@Test
-	public void getMethod() {
+	void getMethod() {
 		mockRequest.setMethod("POST");
 		assertThat(request.getMethod()).as("Invalid method").isEqualTo(HttpMethod.POST);
 	}
 
 	@Test
-	public void getUriForSimplePath() throws URISyntaxException {
+	void getUriForSimplePath() throws URISyntaxException {
 		URI uri = new URI("https://example.com/path");
 		mockRequest.setScheme(uri.getScheme());
 		mockRequest.setServerName(uri.getHost());
@@ -69,7 +69,7 @@ public class ServletServerHttpRequestTests {
 	}
 
 	@Test
-	public void getUriWithQueryString() throws URISyntaxException {
+	void getUriWithQueryString() throws URISyntaxException {
 		URI uri = new URI("https://example.com/path?query");
 		mockRequest.setScheme(uri.getScheme());
 		mockRequest.setServerName(uri.getHost());
@@ -80,7 +80,7 @@ public class ServletServerHttpRequestTests {
 	}
 
 	@Test  // SPR-16414
-	public void getUriWithQueryParam() throws URISyntaxException {
+	void getUriWithQueryParam() throws URISyntaxException {
 		mockRequest.setScheme("https");
 		mockRequest.setServerPort(443);
 		mockRequest.setServerName("example.com");
@@ -90,7 +90,7 @@ public class ServletServerHttpRequestTests {
 	}
 
 	@Test  // SPR-16414
-	public void getUriWithMalformedQueryParam() throws URISyntaxException {
+	void getUriWithMalformedQueryParam() throws URISyntaxException {
 		mockRequest.setScheme("https");
 		mockRequest.setServerPort(443);
 		mockRequest.setServerName("example.com");
@@ -100,7 +100,7 @@ public class ServletServerHttpRequestTests {
 	}
 
 	@Test  // SPR-13876
-	public void getUriWithEncoding() throws URISyntaxException {
+	void getUriWithEncoding() throws URISyntaxException {
 		URI uri = new URI("https://example.com/%E4%B8%AD%E6%96%87" +
 				"?redirect=https%3A%2F%2Fgithub.com%2Fspring-projects%2Fspring-framework");
 		mockRequest.setScheme(uri.getScheme());
@@ -112,7 +112,7 @@ public class ServletServerHttpRequestTests {
 	}
 
 	@Test
-	public void getHeaders() {
+	void getHeaders() {
 		String headerName = "MyHeader";
 		String headerValue1 = "value1";
 		String headerValue2 = "value2";
@@ -132,7 +132,7 @@ public class ServletServerHttpRequestTests {
 	}
 
 	@Test
-	public void getHeadersWithEmptyContentTypeAndEncoding() {
+	void getHeadersWithEmptyContentTypeAndEncoding() {
 		String headerName = "MyHeader";
 		String headerValue1 = "value1";
 		String headerValue2 = "value2";
@@ -152,8 +152,8 @@ public class ServletServerHttpRequestTests {
 	}
 
 	@Test
-	public void getBody() throws IOException {
-		byte[] content = "Hello World".getBytes("UTF-8");
+	void getBody() throws IOException {
+		byte[] content = "Hello World".getBytes(StandardCharsets.UTF_8);
 		mockRequest.setContent(content);
 
 		byte[] result = FileCopyUtils.copyToByteArray(request.getBody());
@@ -161,16 +161,17 @@ public class ServletServerHttpRequestTests {
 	}
 
 	@Test
-	public void getFormBody() throws IOException {
+	void getFormBody() throws IOException {
 		// Charset (SPR-8676)
 		mockRequest.setContentType("application/x-www-form-urlencoded; charset=UTF-8");
 		mockRequest.setMethod("POST");
 		mockRequest.addParameter("name 1", "value 1");
-		mockRequest.addParameter("name 2", new String[] {"value 2+1", "value 2+2"});
+		mockRequest.addParameter("name 2", "value 2+1", "value 2+2");
 		mockRequest.addParameter("name 3", (String) null);
 
 		byte[] result = FileCopyUtils.copyToByteArray(request.getBody());
-		byte[] content = "name+1=value+1&name+2=value+2%2B1&name+2=value+2%2B2&name+3".getBytes("UTF-8");
+		byte[] content = "name+1=value+1&name+2=value+2%2B1&name+2=value+2%2B2&name+3".getBytes(
+				StandardCharsets.UTF_8);
 		assertThat(result).as("Invalid content returned").isEqualTo(content);
 	}