Add unit test for RollingList

git-svn-id: http://svn.dmdirc.com/trunk@4418 00569f92-eb28-0410-84fd-f71c24880f

test/com/dmdirc/util/RollingListTest.java

@@ -0,0 +1,120 @@
+/*
+ * Copyright (c) 2006-2008 Chris Smith, Shane Mc Cormack, Gregory Holmes
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package com.dmdirc.util;
+
+import org.junit.Test;
+import static org.junit.Assert.*;
+
+public class RollingListTest extends junit.framework.TestCase {
+
+    @Test
+    public void testIsEmpty() {
+        final RollingList<String> rl = new RollingList<String>(1);
+        assertTrue(rl.isEmpty());
+        assertTrue(rl.getList().isEmpty());
+        
+        rl.add("Foo");
+        assertFalse(rl.isEmpty());
+        assertFalse(rl.getList().isEmpty());
+    }
+    
+    @Test
+    public void testRolling() {
+        final RollingList<String> rl = new RollingList<String>(1);
+        
+        rl.add("Foo");
+        rl.add("Bar");
+        rl.add("Baz");
+
+        assertEquals("Baz", rl.get(0));
+        assertEquals(1, rl.getList().size());
+        assertFalse(rl.contains("Bar"));
+    }
+    
+    @Test
+    public void testClear() {
+        final RollingList<String> rl = new RollingList<String>(3);
+        
+        rl.add("Foo");
+        rl.add("Bar");
+        rl.add("Baz");
+        rl.clear();
+        
+        assertTrue(rl.isEmpty());
+        assertTrue(rl.getList().isEmpty());
+    }
+    
+    @Test
+    public void testPositions() {
+        final RollingList<String> rl = new RollingList<String>(3);
+        
+        rl.add("Foo");
+        rl.add("Bar");
+        rl.add("Baz");
+        
+        assertEquals(0, rl.getPosition());
+        
+        rl.seekToEnd();
+        assertEquals(3, rl.getPosition());
+        
+        rl.seekToStart();
+        assertEquals(0, rl.getPosition());
+    }
+    
+    @Test
+    public void testPrevNext() {
+        final RollingList<String> rl = new RollingList<String>(3);
+        
+        rl.add("Foo");
+        rl.add("Bar");
+        rl.add("Baz");
+        
+        assertEquals("Bar", rl.getNext());
+        assertEquals("Baz", rl.getNext());
+        assertFalse(rl.hasNext());
+        assertTrue(rl.hasPrevious());
+        
+        assertEquals("Bar", rl.getPrevious());
+        assertEquals("Foo", rl.getPrevious());
+        assertFalse(rl.hasPrevious());
+        assertTrue(rl.hasNext());
+    }
+    
+    @Test
+    public void testEmpty() {
+        final RollingList<String> rl = new RollingList<String>(1, "Meep");
+        rl.add("Foo");
+        
+        assertEquals("Meep", rl.getNext());
+        assertFalse(rl.hasNext());
+        
+        rl.add("Bar");
+        
+        // The position moves when adding
+        assertTrue(rl.hasNext());
+        assertFalse(rl.hasPrevious());
+        assertEquals("Meep", rl.getNext());
+        assertEquals("Bar", rl.getPrevious());
+    }
+
+}