Add type converter for Key<ReservedList> and Key<PremiumList> (#796)

* Add converter for reservedlist and premiumlist keys

* Remove public modifier from test classes

core/src/test/java/google/registry/persistence/converter/PremiumListKeyConverterTest.java

@@ -0,0 +1,90 @@
+// Copyright 2020 The Nomulus Authors. All Rights Reserved.
+//
+// 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 google.registry.persistence.converter;
+
+import static com.google.common.truth.Truth.assertThat;
+import static google.registry.model.common.EntityGroupRoot.getCrossTldKey;
+import static google.registry.persistence.transaction.TransactionManagerFactory.jpaTm;
+
+import com.googlecode.objectify.Key;
+import google.registry.model.ImmutableObject;
+import google.registry.model.registry.label.PremiumList;
+import google.registry.testing.AppEngineExtension;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+/** Unit tests for {@link PremiumListKeyConverter}. */
+class PremiumListKeyConverterTest {
+
+  @RegisterExtension
+  final AppEngineExtension appEngine =
+      AppEngineExtension.builder()
+          .withDatastoreAndCloudSql()
+          .withJpaUnitTestEntities(PremiumListEntity.class)
+          .build();
+
+  private final PremiumListKeyConverter converter = new PremiumListKeyConverter();
+
+  @Test
+  void convertToDatabaseColumn_returnsNullIfInputIsNull() {
+    assertThat(converter.convertToDatabaseColumn(null)).isNull();
+  }
+
+  @Test
+  void convertToDatabaseColumn_convertsCorrectly() {
+    assertThat(
+            converter.convertToDatabaseColumn(
+                Key.create(getCrossTldKey(), PremiumList.class, "testList")))
+        .isEqualTo("testList");
+  }
+
+  @Test
+  void convertToEntityAttribute_returnsNullIfInputIsNull() {
+    assertThat(converter.convertToEntityAttribute(null)).isNull();
+  }
+
+  @Test
+  void convertToEntityAttribute_convertsCorrectly() {
+    assertThat(converter.convertToEntityAttribute("testList"))
+        .isEqualTo(Key.create(getCrossTldKey(), PremiumList.class, "testList"));
+  }
+
+  @Test
+  void testRoundTrip() {
+    Key<PremiumList> key = Key.create(getCrossTldKey(), PremiumList.class, "test");
+    PremiumListEntity testEntity = new PremiumListEntity(key);
+    jpaTm().transact(() -> jpaTm().getEntityManager().persist(testEntity));
+    PremiumListEntity persisted =
+        jpaTm().transact(() -> jpaTm().getEntityManager().find(PremiumListEntity.class, "test"));
+    assertThat(persisted.premiumList).isEqualTo(key);
+  }
+
+  @Entity(name = "PremiumListEntity")
+  private static class PremiumListEntity extends ImmutableObject {
+
+    @Id String name;
+
+    Key<PremiumList> premiumList;
+
+    public PremiumListEntity() {}
+
+    PremiumListEntity(Key<PremiumList> premiumList) {
+      this.name = premiumList.getName();
+      this.premiumList = premiumList;
+    }
+  }
+}

core/src/test/java/google/registry/persistence/converter/ReservedListKeyConverterTest.java

@@ -0,0 +1,90 @@
+// Copyright 2020 The Nomulus Authors. All Rights Reserved.
+//
+// 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 google.registry.persistence.converter;
+
+import static com.google.common.truth.Truth.assertThat;
+import static google.registry.model.common.EntityGroupRoot.getCrossTldKey;
+import static google.registry.persistence.transaction.TransactionManagerFactory.jpaTm;
+
+import com.googlecode.objectify.Key;
+import google.registry.model.ImmutableObject;
+import google.registry.model.registry.label.ReservedList;
+import google.registry.testing.AppEngineExtension;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+/** Unit tests for {@link ReservedListKeyConverter}. */
+class ReservedListKeyConverterTest {
+
+  @RegisterExtension
+  final AppEngineExtension appEngine =
+      AppEngineExtension.builder()
+          .withDatastoreAndCloudSql()
+          .withJpaUnitTestEntities(ReservedListEntity.class)
+          .build();
+
+  private final ReservedListKeyConverter converter = new ReservedListKeyConverter();
+
+  @Test
+  void convertToDatabaseColumn_returnsNullIfInputIsNull() {
+    assertThat(converter.convertToDatabaseColumn(null)).isNull();
+  }
+
+  @Test
+  void convertToDatabaseColumn_convertsCorrectly() {
+    assertThat(
+            converter.convertToDatabaseColumn(
+                Key.create(getCrossTldKey(), ReservedList.class, "testList")))
+        .isEqualTo("testList");
+  }
+
+  @Test
+  void convertToEntityAttribute_returnsNullIfInputIsNull() {
+    assertThat(converter.convertToEntityAttribute(null)).isNull();
+  }
+
+  @Test
+  void convertToEntityAttribute_convertsCorrectly() {
+    assertThat(converter.convertToEntityAttribute("testList"))
+        .isEqualTo(Key.create(getCrossTldKey(), ReservedList.class, "testList"));
+  }
+
+  @Test
+  void testRoundTrip() {
+    Key<ReservedList> key = Key.create(getCrossTldKey(), ReservedList.class, "test");
+    ReservedListEntity testEntity = new ReservedListEntity(key);
+    jpaTm().transact(() -> jpaTm().getEntityManager().persist(testEntity));
+    ReservedListEntity persisted =
+        jpaTm().transact(() -> jpaTm().getEntityManager().find(ReservedListEntity.class, "test"));
+    assertThat(persisted.reservedList).isEqualTo(key);
+  }
+
+  @Entity(name = "ReservedListEntity")
+  private static class ReservedListEntity extends ImmutableObject {
+
+    @Id String name;
+
+    Key<ReservedList> reservedList;
+
+    public ReservedListEntity() {}
+
+    ReservedListEntity(Key<ReservedList> reservedList) {
+      this.name = reservedList.getName();
+      this.reservedList = reservedList;
+    }
+  }
+}