1 files changed, 78 insertions, 0 deletions
diff --git a/tests/src/cgeo/geocaching/utils/MemorySubjectTest.java b/tests/src/cgeo/geocaching/utils/MemorySubjectTest.java
new file mode 100644
index 0000000..30e4f60
--- /dev/null
+++ b/tests/src/cgeo/geocaching/utils/MemorySubjectTest.java
@@ -0,0 +1,78 @@
+package cgeo.geocaching.utils;
+
+import android.test.AndroidTestCase;
+
+public class MemorySubjectTest extends AndroidTestCase {
+
+    private static class Observer implements IObserver<Integer> {
+        public int times = 0;
+        public Integer value;
+
+        @Override
+        public void update(final Integer data) {
+            value = data;
+            times++;
+        }
+    }
+
+    private Observer observer;
+    private MemorySubject<Integer> memorySubject;
+
+    @Override
+    public void setUp() {
+        observer = new Observer();
+        memorySubject = new MemorySubject<Integer>();
+    }
+
+    public void testInitial() {
+        assertNull(observer.value);
+        assertEquals(0, observer.times);
+        assertNull(memorySubject.getMemory());
+    }
+
+    public void testMemory() {
+        memorySubject.addObserver(observer);
+        memorySubject.notifyObservers(10);
+        assertEquals(Integer.valueOf(10), observer.value);
+        assertEquals(1, observer.times);
+        assertEquals(Integer.valueOf(10), memorySubject.getMemory());
+        memorySubject.notifyObservers(20);
+        assertEquals(Integer.valueOf(20), observer.value);
+        assertEquals(2, observer.times);
+        assertEquals(Integer.valueOf(20), memorySubject.getMemory());
+    }
+
+    public void testAttach() {
+        memorySubject.notifyObservers(10);
+        assertNull(observer.value);
+        assertEquals(0, observer.times);
+        memorySubject.addObserver(observer);
+        assertEquals(Integer.valueOf(10), observer.value);
+        assertEquals(1, observer.times);
+        memorySubject.notifyObservers(20);
+        assertEquals(Integer.valueOf(20), observer.value);
+        assertEquals(2, observer.times);
+    }
+
+    public void testDetach() {
+        memorySubject.addObserver(observer);
+        memorySubject.notifyObservers(10);
+        assertEquals(Integer.valueOf(10), observer.value);
+        assertEquals(1, observer.times);
+        assertEquals(Integer.valueOf(10), memorySubject.getMemory());
+        memorySubject.deleteObserver(observer);
+        memorySubject.notifyObservers(20);
+        assertEquals(Integer.valueOf(10), observer.value);
+        assertEquals(1, observer.times);
+        assertEquals(Integer.valueOf(20), memorySubject.getMemory());
+    }
+
+    public void testMultiple() {
+        final Observer otherObserver = new Observer();
+        memorySubject.addObserver(otherObserver);
+        testDetach();
+        assertEquals(Integer.valueOf(20), otherObserver.value);
+        assertEquals(2, otherObserver.times);
+    }
+
+}