feat: Add SuperObjectValue and unit test

src/main/java/com/google/api/generator/engine/ast/AnnotationNode.java

@@ -48,6 +48,10 @@ public static AnnotationNode withSuppressWarnings(String description) {
         .build();
   }
 
+  public static AnnotationNode withType(TypeNode type) {
+    return builder().setType(type).build();
+  }
+
   public static Builder builder() {
     return new AutoValue_AnnotationNode.Builder();
   }

src/main/java/com/google/api/generator/engine/ast/SuperObjectValue.java

@@ -0,0 +1,54 @@
+// Copyright 2020 Google LLC
+//
+// 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 com.google.api.generator.engine.ast;
+
+import com.google.auto.value.AutoValue;
+import com.google.common.base.Preconditions;
+
+@AutoValue
+public abstract class SuperObjectValue implements ObjectValue {
+  private static final String SUPER_VALUE = "super";
+
+  @Override
+  public abstract TypeNode type();
+
+  @Override
+  public String value() {
+    return SUPER_VALUE;
+  }
+
+  private static Builder builder() {
+    return new AutoValue_SuperObjectValue.Builder();
+  }
+
+  public static SuperObjectValue withType(TypeNode type) {
+    return builder().setType(type).build();
+  }
+
+  @AutoValue.Builder
+  abstract static class Builder {
+    abstract Builder setType(TypeNode type);
+
+    abstract SuperObjectValue autoBuild();
+
+    private SuperObjectValue build() {
+      SuperObjectValue superObjectValue = autoBuild();
+      Preconditions.checkState(
+          TypeNode.isReferenceType(superObjectValue.type()),
+          "super can only refer to object types");
+      return superObjectValue;
+    }
+  }
+}

src/main/java/com/google/api/generator/engine/ast/ThisObjectValue.java

@@ -0,0 +1,54 @@
+// Copyright 2020 Google LLC
+//
+// 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 com.google.api.generator.engine.ast;
+
+import com.google.auto.value.AutoValue;
+import com.google.common.base.Preconditions;
+
+@AutoValue
+public abstract class ThisObjectValue implements ObjectValue {
+  private static final String THIS_VALUE = "this";
+
+  @Override
+  public abstract TypeNode type();
+
+  @Override
+  public String value() {
+    return THIS_VALUE;
+  }
+
+  public static ThisObjectValue withType(TypeNode type) {
+    return builder().setType(type).build();
+  }
+
+  private static Builder builder() {
+    return new AutoValue_ThisObjectValue.Builder();
+  }
+
+  @AutoValue.Builder
+  abstract static class Builder {
+    abstract Builder setType(TypeNode type);
+
+    abstract ThisObjectValue autoBuild();
+
+    private ThisObjectValue build() {
+      ThisObjectValue thisObjectValue = autoBuild();
+      Preconditions.checkState(
+          TypeNode.isReferenceType(thisObjectValue.type()),
+          "The \"this\" object can only refer to object types");
+      return thisObjectValue;
+    }
+  }
+}

src/main/java/com/google/api/generator/gapic/composer/BUILD.bazel

@@ -25,5 +25,6 @@ java_library(
         "@io_grpc_java//api",
         "@io_grpc_java//protobuf",
         "@io_grpc_java//stub",
+        "@junit_junit//jar",
     ],
 )

src/main/java/com/google/api/generator/gapic/composer/Composer.java

@@ -68,6 +68,7 @@ public static List<GapicClass> generateMocksAndTestClasses(
     List<GapicClass> clazzes = new ArrayList<>();
     clazzes.add(MockServiceClassComposer.instance().generate(service, messageTypes));
     clazzes.add(MockServiceImplClassComposer.instance().generate(service, messageTypes));
+    clazzes.add(ServiceClientTestClassComposer.instance().generate(service, messageTypes));
     return clazzes;
   }