Add ability to directly specify endpoints in tests

This makes it easy to specify eactly what endpoint is being
tested.

core/runtime/src/main/java/io/quarkus/runtime/test/TestHttpEndpointProvider.java

@@ -0,0 +1,24 @@
+package io.quarkus.runtime.test;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.ServiceLoader;
+import java.util.function.Function;
+
+/**
+ * Interface that can be used to integrate with the TestHTTPEndpoint infrastructure
+ */
+public interface TestHttpEndpointProvider {
+
+    Function<Class<?>, String> endpointProvider();
+
+    static List<Function<Class<?>, String>> load() {
+        List<Function<Class<?>, String>> ret = new ArrayList<>();
+        for (TestHttpEndpointProvider i : ServiceLoader.load(TestHttpEndpointProvider.class,
+                Thread.currentThread().getContextClassLoader())) {
+            ret.add(i.endpointProvider());
+        }
+        return ret;
+    }
+
+}

docs/src/main/asciidoc/getting-started-testing.adoc

@@ -228,6 +228,118 @@ public class StaticContentTest {
 
 For now `@TestHTTPResource` allows you to inject `URI`, `URL` and `String` representations of the URL.
 
+== Testing a specific endpoint
+
+Both RESTassured and `@TestHTTPResource` allow you to specify the endpoint class you are testing rather than hard coding
+a path. This currently supports both JAX-RS endpoints and Servlets. This makes it a lot easier to see exactly which endpoints
+a given test is testing.
+
+For the purposes of these examples I am going to assume we have an endpoint that looks like the following:
+
+[source,java]
+----
+@Path("/hello")
+public class GreetingResource {
+
+    @GET
+    @Produces(MediaType.TEXT_PLAIN)
+    public String hello() {
+        return "hello";
+    }
+}
+----
+
+NOTE: This currently does not support the `@ApplicationPath()` annotation to set the JAX-RS context path. Use the
+`quarkus.resteasy.path` config value instead if you want a custom context path.
+
+=== TestHTTPResource
+
+You can the use the `io.quarkus.test.common.http.TestHTTPEndpoint` annotation to specify the endpoint path, and the path
+will be extracted from the provided endpoint. If you also specify a value for the `TestHTTPResource` endpoint it will
+be appended to the end of the endpoint path.
+
+[source,java]
+----
+package org.acme.getting.started.testing;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+import java.nio.charset.StandardCharsets;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import io.quarkus.test.common.http.TestHTTPEndpoint;
+import io.quarkus.test.common.http.TestHTTPResource;
+import io.quarkus.test.junit.QuarkusTest;
+
+@QuarkusTest
+public class StaticContentTest {
+
+    @TestHTTPEndpoint(GreetingResource.class)  // <1>
+    @TestHTTPResource
+    URL url;
+
+    @Test
+    public void testIndexHtml() throws Exception {
+        try (InputStream in = url.openStream()) {
+            String contents = readStream(in);
+            Assertions.assertTrue(contents.equals("hello"));
+        }
+    }
+
+    private static String readStream(InputStream in) throws IOException {
+        byte[] data = new byte[1024];
+        int r;
+        ByteArrayOutputStream out = new ByteArrayOutputStream();
+        while ((r = in.read(data)) > 0) {
+            out.write(data, 0, r);
+        }
+        return new String(out.toByteArray(), StandardCharsets.UTF_8);
+    }
+}
+----
+<1> Because `GreetingResource` is annotated with `@Path("/hello")` the injected URL
+will end with `/hello`.
+
+=== RESTassured
+
+To control the RESTassured base path (i.e. the default path that serves as the root for every
+request) you can use the `io.quarkus.test.common.http.TestHTTPEndpoint` annotation. This can
+be applied at the class or method level. To test out greeting resource we would do:
+
+[source,java]
+----
+package org.acme.getting.started.testing;
+
+import io.quarkus.test.junit.QuarkusTest;
+import io.quarkus.test.common.http.TestHTTPEndpoint;
+import org.junit.jupiter.api.Test;
+
+import java.util.UUID;
+
+import static io.restassured.RestAssured.given;
+import static org.hamcrest.CoreMatchers.is;
+
+@QuarkusTest
+@TestHTTPEndpoint(GreetingResource.class) //<1>
+public class GreetingResourceTest {
+
+    @Test
+    public void testHelloEndpoint() {
+        given()
+          .when().get()    //<2>
+          .then()
+             .statusCode(200)
+             .body(is("hello"));
+    }
+}
+----
+<1> This tells RESTAssured to prefix all requests with `/hello`.
+<2> Note we don't need to specify a path here, as `/hello` is the default for this test
+
 == Injection into tests
 
 So far we have only covered integration style tests that test the app via HTTP endpoints, but what if we want to do unit

extensions/resteasy-server-common/runtime/src/main/java/io/quarkus/resteasy/server/common/runtime/RESTEasyTestHttpProvider.java

@@ -0,0 +1,70 @@
+package io.quarkus.resteasy.server.common.runtime;
+
+import java.lang.annotation.Annotation;
+import java.lang.reflect.InvocationTargetException;
+import java.util.Optional;
+import java.util.function.Function;
+
+import javax.ws.rs.Path;
+
+import org.eclipse.microprofile.config.ConfigProvider;
+
+import io.quarkus.runtime.test.TestHttpEndpointProvider;
+
+public class RESTEasyTestHttpProvider implements TestHttpEndpointProvider {
+    @Override
+    public Function<Class<?>, String> endpointProvider() {
+        return new Function<Class<?>, String>() {
+            @Override
+            public String apply(Class<?> aClass) {
+                String value = getPath(aClass);
+                if (value == null) {
+                    return null;
+                }
+                if (value.startsWith("/")) {
+                    value = value.substring(1);
+                }
+                //TODO: there is not really any way to handle @ApplicationPath, we could do something for @QuarkusTest apps but we can't for
+                //native apps, so we just have to document the limitation
+                String path = "/";
+                Optional<String> appPath = ConfigProvider.getConfig().getOptionalValue("quarkus.resteasy.path", String.class);
+                if (appPath.isPresent()) {
+                    path = appPath.get();
+                }
+                if (!path.endsWith("/")) {
+                    path = path + "/";
+                }
+                value = path + value;
+                return value;
+            }
+        };
+    }
+
+    private String getPath(Class<?> aClass) {
+        String value = null;
+        for (Annotation annotation : aClass.getAnnotations()) {
+            if (annotation.annotationType().getName().equals(Path.class.getName())) {
+                try {
+                    value = (String) annotation.annotationType().getMethod("value").invoke(annotation);
+                    break;
+                } catch (IllegalAccessException | InvocationTargetException | NoSuchMethodException e) {
+                    throw new RuntimeException(e);
+                }
+            }
+        }
+        if (value == null) {
+            for (Class<?> i : aClass.getInterfaces()) {
+                value = getPath(i);
+                if (value != null) {
+                    break;
+                }
+            }
+        }
+        if (value == null) {
+            if (aClass.getSuperclass() != Object.class) {
+                value = getPath(aClass.getSuperclass());
+            }
+        }
+        return value;
+    }
+}

extensions/resteasy-server-common/runtime/src/main/resources/META-INF/services/io.quarkus.runtime.test.TestHttpEndpointProvider

@@ -0,0 +1 @@
+io.quarkus.resteasy.server.common.runtime.RESTEasyTestHttpProvider

extensions/undertow/runtime/src/main/java/io/quarkus/undertow/runtime/UndertowTestHttpProvider.java

@@ -0,0 +1,57 @@
+package io.quarkus.undertow.runtime;
+
+import java.lang.annotation.Annotation;
+import java.lang.reflect.InvocationTargetException;
+import java.util.Optional;
+import java.util.function.Function;
+
+import javax.servlet.annotation.WebServlet;
+
+import org.eclipse.microprofile.config.ConfigProvider;
+
+import io.quarkus.runtime.test.TestHttpEndpointProvider;
+
+public class UndertowTestHttpProvider implements TestHttpEndpointProvider {
+    @Override
+    public Function<Class<?>, String> endpointProvider() {
+        return new Function<Class<?>, String>() {
+            @Override
+            public String apply(Class<?> aClass) {
+                String value = null;
+                for (Annotation annotation : aClass.getAnnotations()) {
+                    if (annotation.annotationType().getName().equals(WebServlet.class.getName())) {
+                        try {
+                            String[] patterns = (String[]) annotation.annotationType().getMethod("urlPatterns")
+                                    .invoke(annotation);
+                            if (patterns.length > 0) {
+                                value = patterns[0];
+                            }
+                        } catch (IllegalAccessException | InvocationTargetException | NoSuchMethodException e) {
+                            throw new RuntimeException(e);
+                        }
+                    }
+                }
+                if (value == null) {
+                    return null;
+                }
+                if (value.endsWith("/*")) {
+                    value = value.substring(0, value.length() - 1);
+                }
+                if (value.startsWith("/")) {
+                    value = value.substring(1);
+                }
+                String path = "/";
+                Optional<String> appPath = ConfigProvider.getConfig().getOptionalValue("quarkus.servlet.context-path",
+                        String.class);
+                if (appPath.isPresent()) {
+                    path = appPath.get();
+                }
+                if (!path.endsWith("/")) {
+                    path = path + "/";
+                }
+                value = path + value;
+                return value;
+            }
+        };
+    }
+}

extensions/undertow/runtime/src/main/resources/META-INF/services/io.quarkus.runtime.test.TestHttpEndpointProvider

@@ -0,0 +1 @@
+io.quarkus.undertow.runtime.UndertowTestHttpProvider

integration-tests/main/src/main/java/io/quarkus/it/faulttolerance/TestResource.java → integration-tests/main/src/main/java/io/quarkus/it/faulttolerance/FaultToleranceTestResource.java

@@ -7,7 +7,7 @@
 import javax.ws.rs.Path;
 
 @Path("/ft")
-public class TestResource {
+public class FaultToleranceTestResource {
 
     @Inject
     Service service;

integration-tests/main/src/main/java/io/quarkus/it/transaction/TransactionResource.java

@@ -9,7 +9,7 @@
 import javax.ws.rs.GET;
 import javax.ws.rs.Path;
 
-@Path("/txn")
+@Path("/txn/txendpoint")
 public class TransactionResource {
 
     @Inject

integration-tests/main/src/test/java/io/quarkus/it/main/FaultToleranceTestCase.java

@@ -9,13 +9,16 @@
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
+import io.quarkus.it.faulttolerance.FaultToleranceTestResource;
+import io.quarkus.test.common.http.TestHTTPEndpoint;
 import io.quarkus.test.common.http.TestHTTPResource;
 import io.quarkus.test.junit.QuarkusTest;
 
 @QuarkusTest
 public class FaultToleranceTestCase {
 
-    @TestHTTPResource("ft")
+    @TestHTTPEndpoint(FaultToleranceTestResource.class)
+    @TestHTTPResource
     URL uri;
 
     @Test

integration-tests/main/src/test/java/io/quarkus/it/main/JaxRSTestCase.java

@@ -15,6 +15,7 @@
 import org.junit.jupiter.api.Test;
 
 import io.quarkus.it.rest.TestResource;
+import io.quarkus.test.common.http.TestHTTPEndpoint;
 import io.quarkus.test.junit.QuarkusTest;
 import io.restassured.RestAssured;
 import io.restassured.parsing.Parser;
@@ -28,8 +29,9 @@ public void testJAXRS() {
     }
 
     @Test
+    @TestHTTPEndpoint(TestResource.class)
     public void testInteger() {
-        RestAssured.when().get("/test/int/10").then().body(is("11"));
+        RestAssured.when().get("/int/10").then().body(is("11"));
     }
 
     @Test

integration-tests/main/src/test/java/io/quarkus/it/main/ServletTestCase.java

@@ -5,15 +5,18 @@
 
 import org.junit.jupiter.api.Test;
 
+import io.quarkus.it.web.TestServlet;
+import io.quarkus.test.common.http.TestHTTPEndpoint;
 import io.quarkus.test.junit.QuarkusTest;
 import io.restassured.RestAssured;
 
 @QuarkusTest
 public class ServletTestCase {
 
     @Test
+    @TestHTTPEndpoint(TestServlet.class)
     public void testServlet() {
-        RestAssured.when().get("/testservlet").then()
+        RestAssured.when().get().then()
                 .body(is("A message"));
     }
 

integration-tests/main/src/test/java/io/quarkus/it/main/TransactionTestCase.java

@@ -4,15 +4,18 @@
 
 import org.junit.jupiter.api.Test;
 
+import io.quarkus.it.transaction.TransactionResource;
+import io.quarkus.test.common.http.TestHTTPEndpoint;
 import io.quarkus.test.junit.QuarkusTest;
 import io.restassured.RestAssured;
 
 @QuarkusTest
+@TestHTTPEndpoint(TransactionResource.class)
 public class TransactionTestCase {
 
     @Test
     public void testTransaction() {
-        RestAssured.when().get("/txn").then()
+        RestAssured.when().get().then()
                 .body(is("true"));
     }