Type inference tests

kubernetes-client-api/src/test/java/io/fabric8/kubernetes/client/TypeInferenceTest.java

@@ -0,0 +1,83 @@
+/**
+ * Copyright (C) 2015 Red Hat, Inc.
+ *
+ * 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
+ *
+ *         http://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.fabric8.kubernetes.client;
+
+import io.fabric8.kubernetes.api.model.ConfigMap;
+import io.fabric8.kubernetes.api.model.HasMetadata;
+import io.fabric8.kubernetes.api.model.Service;
+import io.fabric8.kubernetes.api.model.apps.Deployment;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import java.util.Arrays;
+import java.util.Optional;
+
+class TypeInferenceTest {
+
+  // Commented-out due to compilation failure
+  // TODO: Enable after #5522 is fixed
+  //  @Test
+  //  void typeInferenceWithLambda() {
+  //    final ConfigMapDependentResource cdr = new ConfigMapDependentResource();
+  //    final DeploymentDependentResource ddr = new DeploymentDependentResource();
+  //    Arrays.asList(cdr, ddr).forEach(dr -> dr.reconcile());
+  //    Assertions.assertTrue(true);
+  //  }
+
+  @Test
+  void typeInferenceWithMethodReference() {
+    final ConfigMapDependentResource cdr = new ConfigMapDependentResource();
+    final DeploymentDependentResource ddr = new DeploymentDependentResource();
+    Arrays.asList(cdr, ddr).forEach(KubernetesDependentResource::reconcile);
+    Assertions.assertTrue(true);
+  }
+
+  static abstract class KubernetesDependentResource<R extends HasMetadata, P extends HasMetadata>
+      implements DependentResourceConfigurator<KubernetesDependentConfig<R>> {
+    void reconcile() {
+      // NOOP
+    }
+
+    @Override
+    public void configureWith(KubernetesDependentConfig<R> config) {
+
+    }
+
+    @Override
+    public Optional<KubernetesDependentConfig<R>> configuration() {
+      return Optional.empty();
+    }
+  }
+
+  static class KubernetesDependentConfig<R extends HasMetadata> {
+
+  }
+
+  interface DependentResourceConfigurator<C> {
+    void configureWith(C config);
+
+    Optional<C> configuration();
+  }
+
+  static final class ConfigMapDependentResource extends KubernetesDependentResource<ConfigMap, Service> {
+
+  }
+
+  static final class DeploymentDependentResource extends KubernetesDependentResource<Deployment, Service> {
+
+  }
+
+}