1 files changed, 59 insertions, 0 deletions
diff --git a/javatests/com/google/gerrit/server/cache/serialize/EnumCacheSerializerTest.java b/javatests/com/google/gerrit/server/cache/serialize/EnumCacheSerializerTest.java
new file mode 100644
index 0000000000..0b80fc7bbe
--- /dev/null
+++ b/javatests/com/google/gerrit/server/cache/serialize/EnumCacheSerializerTest.java
@@ -0,0 +1,59 @@
+// Copyright (C) 2018 The Android Open Source Project
+//
+// 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.gerrit.server.cache.serialize;
+
+import static com.google.common.truth.Truth.assertThat;
+import static com.google.common.truth.Truth.assert_;
+import static java.nio.charset.StandardCharsets.UTF_8;
+
+import org.junit.Test;
+
+public class EnumCacheSerializerTest {
+  @Test
+  public void serialize() throws Exception {
+    assertRoundTrip(MyEnum.FOO);
+    assertRoundTrip(MyEnum.BAR);
+    assertRoundTrip(MyEnum.BAZ);
+  }
+
+  @Test
+  public void deserializeInvalidValues() throws Exception {
+    assertDeserializeFails(null);
+    assertDeserializeFails("".getBytes(UTF_8));
+    assertDeserializeFails("foo".getBytes(UTF_8));
+    assertDeserializeFails("QUUX".getBytes(UTF_8));
+  }
+
+  private enum MyEnum {
+    FOO,
+    BAR,
+    BAZ;
+  }
+
+  private static void assertRoundTrip(MyEnum e) throws Exception {
+    CacheSerializer<MyEnum> s = new EnumCacheSerializer<>(MyEnum.class);
+    assertThat(s.deserialize(s.serialize(e))).isEqualTo(e);
+  }
+
+  private static void assertDeserializeFails(byte[] in) {
+    CacheSerializer<MyEnum> s = new EnumCacheSerializer<>(MyEnum.class);
+    try {
+      s.deserialize(in);
+      assert_().fail("expected RuntimeException");
+    } catch (RuntimeException e) {
+      // Expected.
+    }
+  }
+}