From 348b3ca5ad6fc41c78a1be2d032e497dccdc88fe Mon Sep 17 00:00:00 2001
From: dhruba619 <dhruba619@gmail.com>
Date: Mon, 16 Jan 2017 22:04:47 +0530
Subject: [PATCH] BAEL-581 Convert Iterable to Stream

---
 .../IterableStreamConversionTest.java         | 44 +++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 core-java/src/test/java/com/baeldung/java/conversion/IterableStreamConversionTest.java

diff --git a/core-java/src/test/java/com/baeldung/java/conversion/IterableStreamConversionTest.java b/core-java/src/test/java/com/baeldung/java/conversion/IterableStreamConversionTest.java
new file mode 100644
index 0000000000..ba7339fc7e
--- /dev/null
+++ b/core-java/src/test/java/com/baeldung/java/conversion/IterableStreamConversionTest.java
@@ -0,0 +1,44 @@
+package com.baeldung.java.conversion;
+
+import java.util.Arrays;
+import java.util.Iterator;
+import java.util.List;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+import java.util.stream.StreamSupport;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class IterableStreamConversionTest {
+
+    @Test
+    public void givenIterable_whenConvertedToStream_thenTrue() {
+        String[] names = { "Testing", "Iterable", "conversion", "to", "Stream" };
+        StreamIterable<String> iterable = new StreamIterable<>(names);
+        Assert.assertTrue(StreamSupport.stream(iterable.spliterator(), false) instanceof Stream<?>);
+    }
+
+    @Test
+    public void whenConvertedToList_thenCorrect() {
+        String[] names = { "Testing", "Iterable", "conversion", "to", "Stream" };
+        StreamIterable<String> iterable = new StreamIterable<>(names);
+        Stream<String> convertedStream = StreamSupport.stream(iterable.spliterator(), false);
+        Assert.assertTrue(convertedStream.map(String::toUpperCase)
+            .collect(Collectors.toList()) instanceof List<?>);
+    }
+}
+
+class StreamIterable<T> implements Iterable<T> {
+    private List<T> list;
+
+    public StreamIterable(T[] array) {
+        this.list = Arrays.asList(array);
+    }
+
+    @Override
+    public Iterator<T> iterator() {
+        return list.iterator();
+    }
+
+}