Reinstate Spring for GraphQL auto-configuration

This commit adds the Spring for GraphQL auto-configuration back
into Spring Boot 3.0, now that a 1.1.0 release is scheduled with the
required baseline. This release also needs GraphQL Java 19.0 as a
baseline.

Closes gh-31809

spring-boot-project/spring-boot-test/src/test/java/org/springframework/boot/test/graphql/tester/HttpGraphQlTesterContextCustomizerIntegrationTests.java

@@ -0,0 +1,88 @@
+/*
+ * Copyright 2012-2022 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.test.graphql.tester;
+
+import java.util.Collections;
+import java.util.Map;
+
+import org.junit.jupiter.api.Test;
+import reactor.core.publisher.Mono;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.web.embedded.tomcat.TomcatReactiveWebServerFactory;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.io.buffer.DefaultDataBufferFactory;
+import org.springframework.graphql.test.tester.HttpGraphQlTester;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.server.reactive.ContextPathCompositeHandler;
+import org.springframework.http.server.reactive.HttpHandler;
+import org.springframework.http.server.reactive.ServerHttpRequest;
+import org.springframework.http.server.reactive.ServerHttpResponse;
+import org.springframework.test.annotation.DirtiesContext;
+
+/**
+ * Integration test for {@link HttpGraphQlTesterContextCustomizer}.
+ *
+ * @author Brian Clozel
+ */
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT,
+		properties = "spring.main.web-application-type=reactive")
+@DirtiesContext
+class HttpGraphQlTesterContextCustomizerIntegrationTests {
+
+	@Autowired
+	HttpGraphQlTester graphQlTester;
+
+	@Test
+	void shouldHandleGraphQlRequests() {
+		this.graphQlTester.document("{}").executeAndVerify();
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	static class TestConfig {
+
+		@Bean
+		TomcatReactiveWebServerFactory webServerFactory() {
+			return new TomcatReactiveWebServerFactory(0);
+		}
+
+		@Bean
+		HttpHandler httpHandler() {
+			TestHandler httpHandler = new TestHandler();
+			Map<String, HttpHandler> handlersMap = Collections.singletonMap("/graphql", httpHandler);
+			return new ContextPathCompositeHandler(handlersMap);
+		}
+
+	}
+
+	static class TestHandler implements HttpHandler {
+
+		private static final DefaultDataBufferFactory factory = new DefaultDataBufferFactory();
+
+		@Override
+		public Mono<Void> handle(ServerHttpRequest request, ServerHttpResponse response) {
+			response.setStatusCode(HttpStatus.OK);
+			response.getHeaders().setContentType(MediaType.APPLICATION_JSON);
+			return response.writeWith(Mono.just(factory.wrap("{\"data\":{}}".getBytes())));
+		}
+
+	}
+
+}

spring-boot-project/spring-boot-test/src/test/java/org/springframework/boot/test/graphql/tester/HttpGraphQlTesterContextCustomizerWithCustomBasePathTests.java

@@ -0,0 +1,88 @@
+/*
+ * Copyright 2012-2022 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.test.graphql.tester;
+
+import java.util.Collections;
+import java.util.Map;
+
+import org.junit.jupiter.api.Test;
+import reactor.core.publisher.Mono;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.web.embedded.tomcat.TomcatReactiveWebServerFactory;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.io.buffer.DefaultDataBufferFactory;
+import org.springframework.graphql.test.tester.HttpGraphQlTester;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.server.reactive.ContextPathCompositeHandler;
+import org.springframework.http.server.reactive.HttpHandler;
+import org.springframework.http.server.reactive.ServerHttpRequest;
+import org.springframework.http.server.reactive.ServerHttpResponse;
+import org.springframework.test.context.TestPropertySource;
+
+/**
+ * Tests for {@link HttpGraphQlTesterContextCustomizer} with a custom context path for a
+ * Reactive web application.
+ *
+ * @author Brian Clozel
+ */
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
+@TestPropertySource(properties = { "spring.main.web-application-type=reactive", "spring.webflux.base-path=/test" })
+class HttpGraphQlTesterContextCustomizerWithCustomBasePathTests {
+
+	@Autowired
+	HttpGraphQlTester graphQlTester;
+
+	@Test
+	void shouldHandleGraphQlRequests() {
+		this.graphQlTester.document("{}").executeAndVerify();
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	static class TestConfig {
+
+		@Bean
+		TomcatReactiveWebServerFactory webServerFactory() {
+			return new TomcatReactiveWebServerFactory(0);
+		}
+
+		@Bean
+		HttpHandler httpHandler() {
+			TestHandler httpHandler = new TestHandler();
+			Map<String, HttpHandler> handlersMap = Collections.singletonMap("/test/graphql", httpHandler);
+			return new ContextPathCompositeHandler(handlersMap);
+		}
+
+	}
+
+	static class TestHandler implements HttpHandler {
+
+		private static final DefaultDataBufferFactory factory = new DefaultDataBufferFactory();
+
+		@Override
+		public Mono<Void> handle(ServerHttpRequest request, ServerHttpResponse response) {
+			response.setStatusCode(HttpStatus.OK);
+			response.getHeaders().setContentType(MediaType.APPLICATION_JSON);
+			return response.writeWith(Mono.just(factory.wrap("{\"data\":{}}".getBytes())));
+		}
+
+	}
+
+}

spring-boot-project/spring-boot-test/src/test/java/org/springframework/boot/test/graphql/tester/HttpGraphQlTesterContextCustomizerWithCustomContextPathTests.java

@@ -0,0 +1,80 @@
+/*
+ * Copyright 2012-2022 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.test.graphql.tester;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.graphql.test.tester.HttpGraphQlTester;
+import org.springframework.http.MediaType;
+import org.springframework.test.context.TestPropertySource;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.servlet.DispatcherServlet;
+
+/**
+ * Tests for {@link HttpGraphQlTesterContextCustomizer} with a custom context path for a
+ * Servlet web application.
+ *
+ * @author Brian Clozel
+ */
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
+@TestPropertySource(properties = "server.servlet.context-path=/test")
+class HttpGraphQlTesterContextCustomizerWithCustomContextPathTests {
+
+	@Autowired
+	HttpGraphQlTester graphQlTester;
+
+	@Test
+	void shouldHandleGraphQlRequests() {
+		this.graphQlTester.document("{}").executeAndVerify();
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	@Import(TestController.class)
+	static class TestConfig {
+
+		@Bean
+		TomcatServletWebServerFactory webServerFactory() {
+			TomcatServletWebServerFactory factory = new TomcatServletWebServerFactory(0);
+			factory.setContextPath("/test");
+			return factory;
+		}
+
+		@Bean
+		DispatcherServlet dispatcherServlet() {
+			return new DispatcherServlet();
+		}
+
+	}
+
+	@RestController
+	static class TestController {
+
+		@PostMapping(path = "/graphql", produces = MediaType.APPLICATION_JSON_VALUE)
+		String graphql() {
+			return "{}";
+		}
+
+	}
+
+}