Merge pull request #48410 from geoand/#48400-take2

Properly document how to use @InjectMock with @ConfigMapping

Author: radcortez

docs/src/main/asciidoc/config-mappings.adoc

@@ -537,6 +537,7 @@ requires a spy:
 [source,java]
 ----
 @ConfigMapping(prefix = "app")
+@Unremovable
 public interface AppConfig {
     @WithDefault("app")
     String name();

integration-tests/injectmock/src/main/java/io/quarkus/it/mockbean/DummyMapping.java

@@ -0,0 +1,9 @@
+package io.quarkus.it.mockbean;
+
+import io.quarkus.arc.Unremovable;
+import io.smallrye.config.ConfigMapping;
+
+@ConfigMapping(prefix = "dummy")
+@Unremovable
+public interface DummyMapping {
+}

integration-tests/injectmock/src/test/java/io/quarkus/it/mockbean/ConfigMappingTest.java

@@ -0,0 +1,19 @@
+package io.quarkus.it.mockbean;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import io.quarkus.test.InjectMock;
+import io.quarkus.test.junit.QuarkusTest;
+
+@QuarkusTest
+public class ConfigMappingTest {
+
+    @InjectMock
+    DummyMapping dummyMapping;
+
+    @Test
+    public void testGreet() {
+        Assertions.assertNotNull(dummyMapping);
+    }
+}

integration-tests/injectmock/src/test/java/io/quarkus/it/mockbean/DummyMappingProducer.java

@@ -0,0 +1,22 @@
+package io.quarkus.it.mockbean;
+
+import jakarta.enterprise.context.ApplicationScoped;
+import jakarta.enterprise.inject.Produces;
+import jakarta.inject.Inject;
+
+import org.eclipse.microprofile.config.Config;
+
+import io.smallrye.config.SmallRyeConfig;
+
+public class DummyMappingProducer {
+
+    @Inject
+    Config config;
+
+    @Produces
+    @ApplicationScoped
+    @io.quarkus.test.Mock
+    DummyMapping server() {
+        return config.unwrap(SmallRyeConfig.class).getConfigMapping(DummyMapping.class);
+    }
+}