DATACMNS-1432 - Added Streamable.toList() and ….toSet() for convenience.

src/test/java/org/springframework/data/util/StreamableUnitTests.java

@@ -0,0 +1,41 @@
+/*
+ * 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.util;
+
+import static org.assertj.core.api.Assertions.*;
+
+import java.util.Arrays;
+import java.util.stream.Stream;
+
+import org.junit.Test;
+
+/**
+ * Unit tests for {@link Streamable}
+ * 
+ * @author Oliver Gierke
+ * @soundtrack The Intersphere - Antitype (The Grand Delusion)
+ */
+public class StreamableUnitTests {
+
+	@Test // DATACMNS-1432
+	public void collectsToCollections() {
+
+		Streamable<Integer> streamable = Streamable.of(() -> Stream.of(1, 2, 1));
+
+		assertThat(streamable.toList()).containsExactly(1, 2, 1);
+		assertThat(streamable.toSet()).containsExactlyInAnyOrder(1, 2);
+	}
+}