more bloomfilter tests

src/com/metamolecular/mx/fingerprint/BloomFilter.java

@@ -58,7 +58,7 @@ public class BloomFilter<E> implements Set<E>
 
   /**
    * Simplified constructor that sets the number of expected elements equal to
-   * the number of bits (a standard practice for cheminformatics applications).
+   * the number of bits.
    * 
    * @param bitArraySize
    *            The number of bits in the bit array (often called 'm' in the

src/com/metamolecular/mx/test/BloomFilterTest.java

@@ -90,6 +90,25 @@ public void testItLacksAStringNotIncludedInBulkAdd()
 
     assertFalse(filter.contains("CCCCC"));
   }
+
+  public void testItSetsBitsOnAddingString()
+  {
+    doNew();
+
+    filter.add("Foo");
+
+    assertFalse(filter.toBitSet().cardinality() == 0);
+  }
+
+  public void testItClears()
+  {
+    doNew();
+
+    filter.addAll(Arrays.asList("C", "CC", "CCC", "CCCC"));
+    filter.clear();
+
+    assertEquals(0, filter.toBitSet().cardinality());
+  }
 
   public void testItGivesTheExpectedFalsePositiveRate()
   {