Merge branch 'develop' of https://source.jalview.org/git/jalview into develop

[jalview.git] / test / jalview / util / SparseCountTest.java

diff --git a/test/jalview/util/SparseCountTest.java b/test/jalview/util/SparseCountTest.java
new file mode 100644 (file)
index 0000000..c9a07a1
--- /dev/null
+++ b/test/jalview/util/SparseCountTest.java
@@ -0,0 +1,79 @@
+package jalview.util;
+
+import static org.testng.Assert.assertEquals;
+import static org.testng.Assert.assertFalse;
+import static org.testng.Assert.assertTrue;
+
+import org.testng.annotations.Test;
+public class SparseCountTest
+{
+  @Test(groups = "Functional")
+  public void testAdd()
+  {
+    SparseCount p = new SparseCount(8);
+    p.add('a', 1);
+    p.add('b', 2);
+    p.add('a', 3);
+    p.add('b', -4);
+    assertEquals(p.size(), 2);
+    assertEquals(p.get('a'), 4);
+    assertEquals(p.get('b'), -2);
+  }
+
+  @Test(groups = "Functional")
+  public void testPut()
+  {
+    SparseCount p = new SparseCount(8);
+    p.put('a', 3);
+    p.add('b', 2);
+    p.put('b', 4);
+    assertEquals(p.size(), 2);
+    assertEquals(p.get('a'), 3);
+    assertEquals(p.get('b'), 4);
+  }
+
+  /**
+   * Test handling overflow of short by switching to counting ints
+   */
+  @Test(groups = "Functional")
+  public void testOverflow()
+  {
+    SparseCount p = new SparseCount(8);
+    p.put('a', Short.MAX_VALUE - 1);
+    p.add('a', 1);
+    assertFalse(p.isUsingInt());
+    p.add('a', 1);
+    assertTrue(p.isUsingInt());
+  }
+
+  /**
+   * Test handling underflow of short by switching to counting ints
+   */
+  @Test(groups = "Functional")
+  public void testUnderflow()
+  {
+    SparseCount p = new SparseCount(8);
+    p.put('a', Short.MIN_VALUE + 1);
+    p.add('a', -1);
+    assertFalse(p.isUsingInt());
+    p.add('a', -1);
+    assertTrue(p.isUsingInt());
+  }
+
+  @Test(groups = "Functional")
+  public void testKeyAt_ValueAt()
+  {
+    SparseCount p = new SparseCount(8);
+    p.put('W', 12);
+    p.put('K', 9);
+    p.put('R', 6);
+    assertEquals(p.size(), 3);
+    assertEquals(p.keyAt(0), 'K');
+    assertEquals(p.valueAt(0), 9);
+    assertEquals(p.keyAt(1), 'R');
+    assertEquals(p.valueAt(1), 6);
+    assertEquals(p.keyAt(2), 'W');
+    assertEquals(p.valueAt(2), 12);
+  }
+
+}