Add REST Assured sample

rest-assured/src/test/java/com/example/restassured/SampleRestAssuredApplicationTests.java

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+/*
+ * Copyright 2014-2022 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 com.example.restassured;
+
+import static io.restassured.RestAssured.given;
+import static org.hamcrest.CoreMatchers.is;
+import static org.springframework.restdocs.operation.preprocess.Preprocessors.modifyUris;
+import static org.springframework.restdocs.operation.preprocess.Preprocessors.preprocessRequest;
+import static org.springframework.restdocs.restassured.RestAssuredRestDocumentation.document;
+import static org.springframework.restdocs.restassured.RestAssuredRestDocumentation.documentationConfiguration;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
+import org.springframework.boot.test.web.server.LocalServerPort;
+import org.springframework.restdocs.RestDocumentationContextProvider;
+import org.springframework.restdocs.RestDocumentationExtension;
+
+import io.restassured.builder.RequestSpecBuilder;
+import io.restassured.specification.RequestSpecification;
+
+@ExtendWith(RestDocumentationExtension.class)
+@SpringBootTest(webEnvironment=WebEnvironment.RANDOM_PORT)
+public class SampleRestAssuredApplicationTests {
+
+	private RequestSpecification documentationSpec;
+
+	@LocalServerPort
+	private int port;
+
+	@BeforeEach
+	public void setUp(RestDocumentationContextProvider restDocumentation) {
+		this.documentationSpec = new RequestSpecBuilder()
+				.addFilter(documentationConfiguration(restDocumentation)).build();
+	}
+
+	@Test
+	public void sample() {
+		given(this.documentationSpec)
+				.accept("text/plain")
+				.filter(document("sample",
+						preprocessRequest(modifyUris()
+								.scheme("https")
+								.host("api.example.com")
+								.removePort())))
+		.when()
+				.port(this.port)
+				.get("/")
+		.then()
+				.assertThat().statusCode(is(200));
+	}
+
+}