JAL-98 throw exception (unhandled) for int overthrow while counting

[jalview.git] / test / jalview / ext / android / SparseIntArrayTest.java

diff --git a/test/jalview/ext/android/SparseIntArrayTest.java b/test/jalview/ext/android/SparseIntArrayTest.java
index 3919e33..0ce0467 100644 (file)
--- a/test/jalview/ext/android/SparseIntArrayTest.java
+++ b/test/jalview/ext/android/SparseIntArrayTest.java
@@ -1,6 +1,7 @@
 package jalview.ext.android;
 
 import static org.testng.Assert.assertEquals;
+import static org.testng.Assert.fail;
 
 import org.testng.annotations.Test;
 
@@ -35,9 +36,89 @@ public class SparseIntArrayTest
     assertEquals(counter.add('Q', 4), 11);
 
     counter.put('x', Integer.MAX_VALUE);
-    counter.add('x', 1);
+    try
+    {
+      counter.add('x', 1);
+      fail("expected exception");
+    } catch (ArithmeticException e)
+    {
+      // expected
+    }
   
     counter.put('y', Integer.MIN_VALUE);
-    counter.add('y', -1);
+    try
+    {
+      counter.add('y', -1);
+      fail("expected exception");
+    } catch (ArithmeticException e)
+    {
+      // expected
+    }
   }
+
+  @Test(groups = "Functional")
+  public void testCheckOverflow()
+  {
+    // things that don't overflow:
+    SparseIntArray.checkOverflow(Integer.MAX_VALUE, 0);
+    SparseIntArray.checkOverflow(Integer.MAX_VALUE, -1);
+    SparseIntArray.checkOverflow(Integer.MAX_VALUE, Integer.MIN_VALUE);
+    SparseIntArray.checkOverflow(Integer.MAX_VALUE, -Integer.MAX_VALUE);
+    SparseIntArray.checkOverflow(0, -Integer.MAX_VALUE);
+    SparseIntArray.checkOverflow(0, Integer.MIN_VALUE);
+    SparseIntArray.checkOverflow(Integer.MIN_VALUE, 0);
+    SparseIntArray.checkOverflow(Integer.MIN_VALUE, 1);
+    SparseIntArray.checkOverflow(Integer.MIN_VALUE, Integer.MAX_VALUE);
+
+    // and some that do
+    try
+    {
+      SparseIntArray.checkOverflow(Integer.MAX_VALUE, 1);
+      fail("expected exception");
+    } catch (ArithmeticException e)
+    {
+      // expected
+    }
+    try
+    {
+      SparseIntArray.checkOverflow(Integer.MAX_VALUE - 1, 2);
+      fail("expected exception");
+    } catch (ArithmeticException e)
+    {
+      // expected
+    }
+    try
+    {
+      SparseIntArray.checkOverflow(1, Integer.MAX_VALUE);
+      fail("expected exception");
+    } catch (ArithmeticException e)
+    {
+      // expected
+    }
+    try
+    {
+      SparseIntArray.checkOverflow(Integer.MIN_VALUE, -1);
+      fail("expected exception");
+    } catch (ArithmeticException e)
+    {
+      // expected
+    }
+    try
+    {
+      SparseIntArray.checkOverflow(Integer.MIN_VALUE + 1, -2);
+      fail("expected exception");
+    } catch (ArithmeticException e)
+    {
+      // expected
+    }
+    try
+    {
+      SparseIntArray.checkOverflow(-1, Integer.MIN_VALUE);
+      fail("expected exception");
+    } catch (ArithmeticException e)
+    {
+      // expected
+    }
+  }
+
 }