Allow resolving the server URL via a property

Fixes #527

test-resources-server/src/main/java/io/micronaut/testresources/server/CompositeResolverLoader.java

@@ -35,7 +35,7 @@ public class CompositeResolverLoader implements ResolverLoader {
 
     private final List<TestResourcesResolver> resolvers;
 
-    public CompositeResolverLoader(List<TestResourcesResolver> resolverBeans) {
+    public CompositeResolverLoader(List<InjectableTestResourcesResolver> resolverBeans) {
         var loader = TestResourcesResolverLoader.getInstance();
         this.resolvers = new ArrayList<>(resolverBeans.size() + loader.getResolvers().size());
         this.resolvers.addAll(resolverBeans);

test-resources-server/src/main/java/io/micronaut/testresources/server/InjectableTestResourcesResolver.java

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2017-2024 original 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 io.micronaut.testresources.server;
+
+import io.micronaut.testresources.core.TestResourcesResolver;
+
+/**
+ * Marker interface for a {@link TestResourcesResolver} implementations that can be injected.
+ *
+ * @author Álvaro Sánchez-Mariscal
+ * @since 2.4.0
+ */
+public interface InjectableTestResourcesResolver extends TestResourcesResolver {
+
+}

test-resources-server/src/main/java/io/micronaut/testresources/server/InternalTestResourcesServiceResolver.java

@@ -34,7 +34,7 @@
  */
 @Internal
 @Singleton
-public class InternalTestResourcesServiceResolver implements TestResourcesResolver {
+public class InternalTestResourcesServiceResolver implements InjectableTestResourcesResolver {
 
     public static final String SERVER_URI = "micronaut.test.resources.server.uri";
 

test-resources-server/src/test/groovy/io/micronaut/testresources/server/TestResourcesControllerTest.groovy

@@ -20,7 +20,7 @@ class TestResourcesControllerTest extends Specification {
 
     def "verifies that server can instantiate container"() {
         expect:
-        client.resolvableProperties ==~ ['kafka.bootstrap.servers', 'failing.message', 'failing.container']
+        client.resolvableProperties ==~ ['kafka.bootstrap.servers', 'failing.message', 'failing.container', 'micronaut.test.resources.server.uri']
         client.listContainers().empty
 
         when:
@@ -40,7 +40,7 @@ class TestResourcesControllerTest extends Specification {
 
     def "can resolve a valid property after an error in a regular test resource"() {
         expect:
-        client.resolvableProperties ==~ ['kafka.bootstrap.servers', 'failing.message', 'failing.container']
+        client.resolvableProperties ==~ ['kafka.bootstrap.servers', 'failing.message', 'failing.container', 'micronaut.test.resources.server.uri']
         client.listContainers().empty
 
         when: "resolution of a property fails"
@@ -66,7 +66,7 @@ class TestResourcesControllerTest extends Specification {
 
     def "can resolve a valid property after an error in a container test resource"() {
         expect:
-        client.resolvableProperties ==~ ['kafka.bootstrap.servers', 'failing.message', 'failing.container']
+        client.resolvableProperties ==~ ['kafka.bootstrap.servers', 'failing.message', 'failing.container', 'micronaut.test.resources.server.uri']
         client.listContainers().empty
 
         when: "resolution of a property which starts a container"
@@ -96,7 +96,7 @@ class TestResourcesControllerTest extends Specification {
 
         then:
         url.isPresent()
-        url.get() == "http://localhost:8080"
+        url.get().startsWith("http://localhost:")
     }
 
     @Client("/")