Merge branch 'develop' into features/JAL-250_hideredundantseqs

[jalview.git] / test / jalview / datamodel / AllColsIteratorTest.java

diff --git a/test/jalview/datamodel/AllColsIteratorTest.java b/test/jalview/datamodel/AllColsIteratorTest.java
new file mode 100644 (file)
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+++ b/test/jalview/datamodel/AllColsIteratorTest.java
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+/*
+ * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
+ * Copyright (C) $$Year-Rel$$ The Jalview Authors
+ * 
+ * This file is part of Jalview.
+ * 
+ * Jalview is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License 
+ * as published by the Free Software Foundation, either version 3
+ * of the License, or (at your option) any later version.
+ *  
+ * Jalview is distributed in the hope that it will be useful, but 
+ * WITHOUT ANY WARRANTY; without even the implied warranty 
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
+ * PURPOSE.  See the GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with Jalview.  If not, see <http://www.gnu.org/licenses/>.
+ * The Jalview Authors are detailed in the 'AUTHORS' file.
+ */
+package jalview.datamodel;
+
+import static org.testng.Assert.assertTrue;
+
+import java.util.NoSuchElementException;
+
+import org.testng.annotations.BeforeClass;
+import org.testng.annotations.Test;
+
+public class AllColsIteratorTest
+{
+  HiddenColumns hiddenCols;
+  
+  @BeforeClass
+  public void setup()
+  {
+    hiddenCols = new HiddenColumns();
+   hiddenCols.hideColumns(2,4);
+  }
+  
+
+  /*
+   * Test iterator iterates through collection correctly
+   */
+  @Test(groups = { "Functional" })
+  public void testHasNextAndNext()
+  {
+    AllColsIterator it = new AllColsIterator(0, 3, hiddenCols);
+    int count = 0;
+    while (it.hasNext())
+    {
+      it.next();
+      count++;
+    }
+    assertTrue(count == 4, "hasNext() is false after 4 iterations");
+  }
+
+  /*
+   * Test iterator throws NoSuchElementException at end of iteration
+   */
+  @Test(
+    groups = { "Functional" },
+    expectedExceptions = { NoSuchElementException.class })
+  public void testLastNext() throws NoSuchElementException
+  {
+    AllColsIterator it = new AllColsIterator(0, 3, hiddenCols);
+    while (it.hasNext())
+    {
+      it.next();
+    }
+    it.next();
+  }
+
+  /*
+   * Test iterator throws UnsupportedOperationException on call to remove
+   */
+  @Test(
+    groups = { "Functional" },
+    expectedExceptions = { UnsupportedOperationException.class })
+  public void testRemove() throws UnsupportedOperationException
+  {
+    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");
+  }
+}