DATAREDIS-872 - Polishing.

Create unit tests for RedisAtomic counter initialization. Refactor setIfAbsent(…) method to initializeIfAbsent() to not expose additional API methods.

Original pull request: #367.

src/test/java/org/springframework/data/redis/support/atomic/RedisAtomicDoubleUnitTests.java

@@ -0,0 +1,51 @@
+/*
+ * Copyright 2018 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.support.atomic;
+
+import static org.mockito.Mockito.*;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnitRunner;
+import org.springframework.data.redis.core.RedisOperations;
+import org.springframework.data.redis.core.ValueOperations;
+import org.springframework.data.redis.serializer.RedisSerializer;
+
+/**
+ * Unit tests for {@link RedisAtomicDouble}.
+ * 
+ * @author Mark Paluch
+ */
+@RunWith(MockitoJUnitRunner.class)
+public class RedisAtomicDoubleUnitTests {
+
+	@Mock RedisOperations<String, Double> operationsMock;
+	@Mock ValueOperations<String, Double> valueOperationsMock;
+
+	@Test // DATAREDIS-872
+	@SuppressWarnings("unchecked")
+	public void shouldUseSetIfAbsentForInitialValue() {
+
+		when(operationsMock.opsForValue()).thenReturn(valueOperationsMock);
+		when(operationsMock.getKeySerializer()).thenReturn(mock(RedisSerializer.class));
+		when(operationsMock.getValueSerializer()).thenReturn(mock(RedisSerializer.class));
+
+		new RedisAtomicDouble("id", operationsMock);
+
+		verify(valueOperationsMock).setIfAbsent("id", 0d);
+	}
+}

src/test/java/org/springframework/data/redis/support/atomic/RedisAtomicIntegerUnitTests.java

@@ -0,0 +1,51 @@
+/*
+ * Copyright 2018 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.support.atomic;
+
+import static org.mockito.Mockito.*;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnitRunner;
+import org.springframework.data.redis.core.RedisOperations;
+import org.springframework.data.redis.core.ValueOperations;
+import org.springframework.data.redis.serializer.RedisSerializer;
+
+/**
+ * Unit tests for {@link RedisAtomicInteger}.
+ * 
+ * @author Mark Paluch
+ */
+@RunWith(MockitoJUnitRunner.class)
+public class RedisAtomicIntegerUnitTests {
+
+	@Mock RedisOperations<String, Integer> operationsMock;
+	@Mock ValueOperations<String, Integer> valueOperationsMock;
+
+	@Test // DATAREDIS-872
+	@SuppressWarnings("unchecked")
+	public void shouldUseSetIfAbsentForInitialValue() {
+
+		when(operationsMock.opsForValue()).thenReturn(valueOperationsMock);
+		when(operationsMock.getKeySerializer()).thenReturn(mock(RedisSerializer.class));
+		when(operationsMock.getValueSerializer()).thenReturn(mock(RedisSerializer.class));
+
+		new RedisAtomicInteger("id", operationsMock);
+
+		verify(valueOperationsMock).setIfAbsent("id", 0);
+	}
+}

src/test/java/org/springframework/data/redis/support/atomic/RedisAtomicLongUnitTests.java

@@ -0,0 +1,51 @@
+/*
+ * Copyright 2018 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.support.atomic;
+
+import static org.mockito.Mockito.*;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnitRunner;
+import org.springframework.data.redis.core.RedisOperations;
+import org.springframework.data.redis.core.ValueOperations;
+import org.springframework.data.redis.serializer.RedisSerializer;
+
+/**
+ * Unit tests for {@link RedisAtomicLong}.
+ * 
+ * @author Mark Paluch
+ */
+@RunWith(MockitoJUnitRunner.class)
+public class RedisAtomicLongUnitTests {
+
+	@Mock RedisOperations<String, Long> operationsMock;
+	@Mock ValueOperations<String, Long> valueOperationsMock;
+
+	@Test // DATAREDIS-872
+	@SuppressWarnings("unchecked")
+	public void shouldUseSetIfAbsentForInitialValue() {
+
+		when(operationsMock.opsForValue()).thenReturn(valueOperationsMock);
+		when(operationsMock.getKeySerializer()).thenReturn(mock(RedisSerializer.class));
+		when(operationsMock.getValueSerializer()).thenReturn(mock(RedisSerializer.class));
+
+		new RedisAtomicLong("id", operationsMock);
+
+		verify(valueOperationsMock).setIfAbsent("id", 0L);
+	}
+}