Merge pull request #1399 from poixen/counters

Added unit tests and javadoc for Counter class.

Mage/src/test/java/mage/counters/CounterTest.java

@@ -0,0 +1,135 @@
+package mage.counters;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Custom unit tests for {@link Counter}
+ */
+public class CounterTest {
+
+    private Counter counter;
+
+    @Before
+    public void setUp() {
+        counter = new Counter("test", 1);
+    }
+
+
+    @Test
+    public void shouldIncreaseCounter() {
+        // given
+
+        // when
+        counter.increase();
+
+        // then
+        assertEquals(2, counter.getCount());
+        assertEquals("test", counter.getName());
+    }
+
+
+    @Test
+    public void shouldAddMana() {
+        // given
+
+        // when
+        counter.add(5);
+
+        // then
+        assertEquals(6, counter.getCount());
+    }
+
+
+    @Test
+    public void shouldDecreaseCounter() {
+        // given
+
+
+        // when
+        counter.decrease();
+
+        // then
+        assertEquals(0, counter.getCount());
+    }
+
+
+    @Test
+    public void shouldNotDecreaseToLessThanZero() {
+        // given
+
+        // when
+        counter.decrease();
+        counter.decrease();
+
+        // then
+        assertEquals(0, counter.getCount());
+    }
+
+
+    @Test
+    public void shouldRemoveCounters() {
+        // given
+
+
+        // when
+        counter.remove(1);
+
+        // then
+        assertEquals(0, counter.getCount());
+    }
+
+
+    @Test
+    public void shouldNotRemoveMoreCountersThanAvailable() {
+        // given
+
+        // when
+        counter.remove(10);
+
+        // then
+        assertEquals(0, counter.getCount());
+    }
+
+
+    @Test
+    public void shouldReturnCopy() {
+        // given
+
+        // when
+        Counter copy = counter.copy();
+
+        // then
+        assertEquals(copy, counter);
+        assertFalse(copy == counter);
+    }
+
+
+    @Test
+    public void shouldCreateCounterFromCounter() {
+        // given
+
+        // when
+        Counter copy = new Counter(counter);
+
+        // then
+        assertEquals(1, copy.getCount());
+        assertEquals("test", copy.getName());
+    }
+
+
+    @Test
+    public void shouldCreatDefaultCounter() {
+        // given
+
+
+        // when
+        Counter defaultCounter = new Counter("default");
+
+        // then
+        assertEquals(1, defaultCounter.getCount());
+        assertEquals("default", defaultCounter.getName());
+    }
+}