Use Gradle test fixture support for spring-web

See gh-23550

spring-test/spring-test.gradle

@@ -46,6 +46,7 @@ dependencies {
 	testCompile(testFixtures(project(":spring-context")))
 	testCompile(testFixtures(project(":spring-core")))
 	testCompile(testFixtures(project(":spring-tx")))
+	testCompile(testFixtures(project(":spring-web")))
 	testCompile("javax.annotation:javax.annotation-api")
 	testCompile("javax.cache:cache-api")
 	testCompile("javax.ejb:javax.ejb-api")

spring-test/src/test/java/org/springframework/test/web/reactive/server/samples/bind/HttpServerTests.java

@@ -21,10 +21,10 @@ import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
 import org.springframework.http.server.reactive.HttpHandler;
-import org.springframework.http.server.reactive.bootstrap.ReactorHttpServer;
 import org.springframework.test.web.reactive.server.WebTestClient;
 import org.springframework.web.reactive.function.server.RouterFunctions;
 import org.springframework.web.reactive.function.server.ServerResponse;
+import org.springframework.web.testfixture.http.server.reactive.bootstrap.ReactorHttpServer;
 
 import static org.springframework.web.reactive.function.server.RequestPredicates.GET;
 import static org.springframework.web.reactive.function.server.RouterFunctions.route;

spring-test/src/test/java/org/springframework/test/web/servlet/setup/StandaloneMockMvcBuilderTests.java

@@ -29,7 +29,7 @@ import com.fasterxml.jackson.databind.ser.impl.UnknownSerializer;
 import org.junit.jupiter.api.Test;
 
 import org.springframework.http.converter.json.SpringHandlerInstantiator;
-import org.springframework.mock.web.test.MockHttpServletRequest;
+import org.springframework.mock.web.MockHttpServletRequest;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.context.WebApplicationContext;