DATAREDIS-294 - TypedTuple should allow sorting using java sort().

Updated Comparable type information to allow usage with standard java sort.

src/test/java/org/springframework/data/redis/core/DefaultTypedTupleUnitTests.java

@@ -0,0 +1,64 @@
+/*
+ * Copyright 2014 the original author or authors.
+ *
+ * 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 org.springframework.data.redis.core;
+
+import static org.hamcrest.core.IsEqual.*;
+import static org.junit.Assert.*;
+
+import org.junit.Test;
+import org.springframework.data.redis.core.ZSetOperations.TypedTuple;
+
+/**
+ * @author Christoph Strobl
+ */
+public class DefaultTypedTupleUnitTests {
+
+	private static final TypedTuple<String> WITH_SCORE_1 = new DefaultTypedTuple<String>("foo", 1D);
+	private static final TypedTuple<String> ANOTHER_ONE_WITH_SCORE_1 = new DefaultTypedTuple<String>("another", 1D);
+	private static final TypedTuple<String> WITH_SCORE_2 = new DefaultTypedTuple<String>("bar", 2D);
+	private static final TypedTuple<String> WITH_SCORE_NULL = new DefaultTypedTuple<String>("foo", null);
+
+	/**
+	 * @see DATAREDIS-294
+	 */
+	@Test
+	public void compareToShouldUseScore() {
+
+		assertThat(WITH_SCORE_1.compareTo(WITH_SCORE_2), equalTo(-1));
+		assertThat(WITH_SCORE_2.compareTo(WITH_SCORE_1), equalTo(1));
+		assertThat(WITH_SCORE_1.compareTo(ANOTHER_ONE_WITH_SCORE_1), equalTo(0));
+	}
+
+	/**
+	 * @see DATAREDIS-294
+	 */
+	@Test
+	public void compareToShouldConsiderGivenNullAsZeroScore() {
+
+		assertThat(WITH_SCORE_1.compareTo(null), equalTo(1));
+		assertThat(WITH_SCORE_NULL.compareTo(null), equalTo(0));
+	}
+
+	/**
+	 * @see DATAREDIS-294
+	 */
+	@Test
+	public void compareToShouldConsiderNullScoreAsZeroScore() {
+
+		assertThat(WITH_SCORE_1.compareTo(WITH_SCORE_NULL), equalTo(1));
+		assertThat(WITH_SCORE_NULL.compareTo(WITH_SCORE_1), equalTo(-1));
+	}
+}