X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=test%2Fjalview%2Fdatamodel%2FSequenceTest.java;h=71719ddbf5639f3602c37843e9ade7b257deb712;hb=cf1d48fde41e88a6c05c8333f4e9e00459b0b4d9;hp=5c5c5c31d600ed748bfd3cb3bf51b351f6a02d86;hpb=ce36ce68c3ec8d050f70163833e28f58e26bde89;p=jalview.git

diff --git a/test/jalview/datamodel/SequenceTest.java b/test/jalview/datamodel/SequenceTest.java
index 5c5c5c3..71719dd 100644
--- a/test/jalview/datamodel/SequenceTest.java
+++ b/test/jalview/datamodel/SequenceTest.java
@@ -78,7 +78,17 @@ public class SequenceTest
     // change sequence, should trigger an update of cached result
     sq.setSequence("ASDFASDFADSF");
     assertTrue(sq.isProtein());
+    /*
+     * in situ change of sequence doesn't change hashcode :-O
+     * (sequence should not expose internal implementation)
+     */
+    for (int i = 0; i < sq.getSequence().length; i++)
+    {
+      sq.getSequence()[i] = "acgtu".charAt(i % 5);
+    }
+    assertTrue(sq.isProtein()); // but it isn't
   }
+
   @Test(groups = { "Functional" })
   public void testGetAnnotation()
   {