1 files changed, 65 insertions, 0 deletions
diff --git a/javatests/com/google/gerrit/server/cache/serialize/StringCacheSerializerTest.java b/javatests/com/google/gerrit/server/cache/serialize/StringCacheSerializerTest.java
new file mode 100644
index 0000000000..fa3b7d73ff
--- /dev/null
+++ b/javatests/com/google/gerrit/server/cache/serialize/StringCacheSerializerTest.java
@@ -0,0 +1,65 @@
+// 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 java.nio.charset.CharacterCodingException;
+import java.nio.charset.StandardCharsets;
+import org.junit.Test;
+
+public class StringCacheSerializerTest {
+  @Test
+  public void serialize() {
+    assertThat(StringCacheSerializer.INSTANCE.serialize("")).isEmpty();
+    assertThat(StringCacheSerializer.INSTANCE.serialize("abc"))
+        .isEqualTo(new byte[] {'a', 'b', 'c'});
+    assertThat(StringCacheSerializer.INSTANCE.serialize("a\u1234c"))
+        .isEqualTo(new byte[] {'a', (byte) 0xe1, (byte) 0x88, (byte) 0xb4, 'c'});
+  }
+
+  @Test
+  public void serializeInvalidChar() {
+    // Can't use UTF-8 for the test, since it can encode all Unicode code points.
+    try {
+      StringCacheSerializer.serialize(StandardCharsets.US_ASCII, "\u1234");
+      assert_().fail("expected IllegalStateException");
+    } catch (IllegalStateException expected) {
+      assertThat(expected).hasCauseThat().isInstanceOf(CharacterCodingException.class);
+    }
+  }
+
+  @Test
+  public void deserialize() {
+    assertThat(StringCacheSerializer.INSTANCE.deserialize(new byte[0])).isEmpty();
+    assertThat(StringCacheSerializer.INSTANCE.deserialize(new byte[] {'a', 'b', 'c'}))
+        .isEqualTo("abc");
+    assertThat(
+            StringCacheSerializer.INSTANCE.deserialize(
+                new byte[] {'a', (byte) 0xe1, (byte) 0x88, (byte) 0xb4, 'c'}))
+        .isEqualTo("a\u1234c");
+  }
+
+  @Test
+  public void deserializeInvalidChar() {
+    try {
+      StringCacheSerializer.INSTANCE.deserialize(new byte[] {(byte) 0xff});
+      assert_().fail("expected IllegalStateException");
+    } catch (IllegalStateException expected) {
+      assertThat(expected).hasCauseThat().isInstanceOf(CharacterCodingException.class);
+    }
+  }
+}