From c77c74abb9a0bb5bfa093d7e290289d6acbab389 Mon Sep 17 00:00:00 2001
From: Andrei Ciobanu <nomemory@users.noreply.github.com>
Date: Mon, 8 May 2017 23:00:09 +0300
Subject: [PATCH] Added unit test for arrayList shuffler.

---
 .../mockneat/unit/objects/Shufflers.java      |  1 -
 .../mockneat/unit/objects/ShufflersTest.java  | 55 +++++++++++++++++++
 2 files changed, 55 insertions(+), 1 deletion(-)

diff --git a/src/main/java/net/andreinc/mockneat/unit/objects/Shufflers.java b/src/main/java/net/andreinc/mockneat/unit/objects/Shufflers.java
index bd18c8d..a8176ef 100644
--- a/src/main/java/net/andreinc/mockneat/unit/objects/Shufflers.java
+++ b/src/main/java/net/andreinc/mockneat/unit/objects/Shufflers.java
@@ -105,7 +105,6 @@ public MockUnit<float[]> arrayFloat(float[] source) {
         return () -> supplier;
     }
 
-    //TODO add tests
     public <T> MockUnit<ArrayList<T>> arrayList(ArrayList<T> source) {
         notNull(source, "source");
         Supplier<ArrayList<T>> supplier = () -> {
diff --git a/src/test/java/net/andreinc/mockneat/unit/objects/ShufflersTest.java b/src/test/java/net/andreinc/mockneat/unit/objects/ShufflersTest.java
index 74ae1f3..42d007e 100644
--- a/src/test/java/net/andreinc/mockneat/unit/objects/ShufflersTest.java
+++ b/src/test/java/net/andreinc/mockneat/unit/objects/ShufflersTest.java
@@ -3,6 +3,7 @@
 import net.andreinc.mockneat.unit.objects.model.SimpleBean;
 import org.junit.Test;
 
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashSet;
 import java.util.Set;
@@ -281,4 +282,58 @@ public void testFloatArray() throws Exception {
                 }
         );
     }
+
+    @Test(expected = NullPointerException.class)
+    public void testArrayListNullSource() throws Exception {
+        M.shufflers().arrayList(null).val();
+    }
+
+
+    @Test
+    public void testArrayListEmptySource() throws Exception {
+        ArrayList<Double> al = new ArrayList<>();
+        ArrayList<Double> newAl = M.shufflers().arrayList(al).val();
+
+        assertNotNull(newAl);
+        assertTrue(al!=newAl);
+        assertTrue(newAl.size()==0);
+    }
+
+    @Test
+    public void testArrayListOneElement() throws Exception {
+        ArrayList<Double> al = new ArrayList<>();
+        al.add(1.0);
+
+        ArrayList<Double> newAl = M.shufflers().arrayList(al).val();
+
+        assertNotNull(newAl);
+        assertTrue(newAl!=al);
+        assertTrue(newAl.size() == 1);
+        assertTrue(newAl.get(0).equals(1.0));
+    }
+
+    @Test
+    public void testArrayListArray() throws Exception {
+        loop(
+                SHUFFLED_CYCLES,
+                MOCKS,
+                m -> {
+                    ArrayList<Double> al = (ArrayList<Double>) m.doubles()
+                            .list(ArrayList.class, 50)
+                            .val();
+
+                    Set<Double> possibleValues = new HashSet<>(al);
+
+                    ArrayList<Double> newAl = m.shufflers()
+                            .arrayList(al)
+                            .val();
+
+                    assertTrue(newAl!=al);
+                    assertTrue(al.size() == newAl.size());
+
+                    range(0, newAl.size())
+                            .forEach(i -> assertTrue(possibleValues.contains(newAl.get(i))));
+                }
+        );
+    }
 }