X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=test%2Fjalview%2Fdatamodel%2FAllColsIteratorTest.java;fp=test%2Fjalview%2Fdatamodel%2FAllColsIteratorTest.java;h=3942f0b37185d3f5ac42514b78c26dc9db8b50e8;hb=18565b7cf82c50da2d6266f885fa6ebef929db79;hp=fbb20be2c5f6de109067f1752588fac273e82c45;hpb=499d28231522cf0f831b4d3acf944f00c8ece3a4;p=jalview.git

diff --git a/test/jalview/datamodel/AllColsIteratorTest.java b/test/jalview/datamodel/AllColsIteratorTest.java
index fbb20be..3942f0b 100644
--- a/test/jalview/datamodel/AllColsIteratorTest.java
+++ b/test/jalview/datamodel/AllColsIteratorTest.java
@@ -82,4 +82,21 @@ public class AllColsIteratorTest
     AllColsIterator it = new AllColsIterator(0, 3, hiddenCols);
     it.remove();
   }
+
+  /*
+   * Test iterator behaves correctly when there is only one element in the collection
+   */
+  @Test(groups = { "Functional" })
+  public void testOneElement()
+  {
+    HiddenColumns hidden = new HiddenColumns();
+    AllColsIterator it = new AllColsIterator(0, 0, hidden);
+    int count = 0;
+    while (it.hasNext())
+    {
+      it.next();
+      count++;
+    }
+    assertTrue(count == 1, "hasNext() is false after 1 iteration");
+  }
 }