JAL-2759 BoundedStartRegionIterator test

diff --git a/test/jalview/datamodel/BoundedStartRegionIteratorTest.java b/test/jalview/datamodel/BoundedStartRegionIteratorTest.java
new file mode 100644 (file)
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+++ b/test/jalview/datamodel/BoundedStartRegionIteratorTest.java
@@ -0,0 +1,214 @@
+/*
+ * 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.assertEquals;
+import static org.testng.AssertJUnit.assertFalse;
+import static org.testng.AssertJUnit.assertTrue;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+import org.testng.annotations.Test;
+
+public class BoundedStartRegionIteratorTest
+{
+  /**
+   * Test the start region iterator
+   */
+  @Test(groups = { "Functional" })
+  public void testBasicBoundsIterator()
+  {
+    List<int[]> hiddenColumns = null;
+
+    // null hidden columns
+    Iterator<Integer> it = new BoundedStartRegionIterator(3, 10,
+            hiddenColumns);
+    assertFalse(it.hasNext());
+
+    hiddenColumns = new ArrayList<>();
+
+    // no hidden columns
+    it = new BoundedStartRegionIterator(3, 10, hiddenColumns);
+    assertFalse(it.hasNext());
+
+    // add some hidden columns
+    hiddenColumns.add(new int[] { 5, 10 });
+    hiddenColumns.add(new int[] { 25, 40 });
+
+    it = new BoundedStartRegionIterator(3, 10, hiddenColumns);
+    assertTrue(it.hasNext());
+    Integer result = it.next();
+    assertEquals(5, (int) result);
+    assertFalse(it.hasNext());
+
+    it = new BoundedStartRegionIterator(3, 15, hiddenColumns);
+    assertTrue(it.hasNext());
+    result = it.next();
+    assertEquals(5, (int) result);
+    assertFalse(it.hasNext());
+
+    it = new BoundedStartRegionIterator(3, 18, hiddenColumns);
+    assertTrue(it.hasNext());
+    result = it.next();
+    assertEquals(5, (int) result);
+    assertFalse(it.hasNext());
+
+    it = new BoundedStartRegionIterator(3, 19, hiddenColumns);
+    assertTrue(it.hasNext());
+    result = it.next();
+    assertEquals(5, (int) result);
+    assertTrue(it.hasNext());
+    result = it.next();
+    assertEquals(19, (int) result);
+    assertFalse(it.hasNext());
+
+    hiddenColumns.add(new int[] { 47, 50 });
+
+    it = new BoundedStartRegionIterator(15, 60, hiddenColumns);
+    assertTrue(it.hasNext());
+    result = it.next();
+    assertEquals(19, (int) result);
+    assertTrue(it.hasNext());
+    result = it.next();
+    assertEquals(25, (int) result);
+    assertFalse(it.hasNext());
+  }
+
+  /**
+   * Test the start region iterator with null cursor
+   */
+  @Test(groups = { "Functional" })
+  public void testBoundsIteratorUsingNullCursor()
+  {
+    List<int[]> hiddenColumns = null;
+    HiddenCursorPosition pos = null;
+
+    // null hidden columns
+    Iterator<Integer> it = new BoundedStartRegionIterator(pos, 3, 10,
+            hiddenColumns);
+    assertFalse(it.hasNext());
+
+    hiddenColumns = new ArrayList<>();
+
+    // no hidden columns
+    it = new BoundedStartRegionIterator(pos, 3, 10, hiddenColumns);
+    assertFalse(it.hasNext());
+
+    // add some hidden columns
+    hiddenColumns.add(new int[] { 5, 10 });
+    hiddenColumns.add(new int[] { 25, 40 });
+
+    it = new BoundedStartRegionIterator(pos, 3, 10, hiddenColumns);
+    assertTrue(it.hasNext());
+    Integer result = it.next();
+    assertEquals(5, (int) result);
+    assertFalse(it.hasNext());
+
+    it = new BoundedStartRegionIterator(pos, 3, 15, hiddenColumns);
+    assertTrue(it.hasNext());
+    result = it.next();
+    assertEquals(5, (int) result);
+    assertFalse(it.hasNext());
+
+    it = new BoundedStartRegionIterator(pos, 3, 18, hiddenColumns);
+    assertTrue(it.hasNext());
+    result = it.next();
+    assertEquals(5, (int) result);
+    assertFalse(it.hasNext());
+
+    it = new BoundedStartRegionIterator(pos, 3, 19, hiddenColumns);
+    assertTrue(it.hasNext());
+    result = it.next();
+    assertEquals(5, (int) result);
+    assertTrue(it.hasNext());
+    result = it.next();
+    assertEquals(19, (int) result);
+    assertFalse(it.hasNext());
+
+    hiddenColumns.add(new int[] { 47, 50 });
+
+    it = new BoundedStartRegionIterator(pos, 15, 60, hiddenColumns);
+    assertTrue(it.hasNext());
+    result = it.next();
+    assertEquals(19, (int) result);
+    assertTrue(it.hasNext());
+    result = it.next();
+    assertEquals(25, (int) result);
+    assertFalse(it.hasNext());
+  }
+
+  /**
+   * Test the start region iterator with nonnull cursor
+   */
+  @Test(groups = { "Functional" })
+  public void testBoundsIteratorUsingCursor()
+  {
+    List<int[]> hiddenColumns = new ArrayList<>();
+
+    // add some hidden columns
+    hiddenColumns.add(new int[] { 5, 10 });
+    hiddenColumns.add(new int[] { 25, 40 });
+
+    HiddenCursorPosition pos = new HiddenCursorPosition(0, 0);
+
+    Iterator<Integer> it = new BoundedStartRegionIterator(pos, 3, 10,
+            hiddenColumns);
+    assertTrue(it.hasNext());
+    Integer result = it.next();
+    assertEquals(5, (int) result);
+    assertFalse(it.hasNext());
+
+    it = new BoundedStartRegionIterator(pos, 3, 15, hiddenColumns);
+    assertTrue(it.hasNext());
+    result = it.next();
+    assertEquals(5, (int) result);
+    assertFalse(it.hasNext());
+
+    it = new BoundedStartRegionIterator(pos, 3, 18, hiddenColumns);
+    assertTrue(it.hasNext());
+    result = it.next();
+    assertEquals(5, (int) result);
+    assertFalse(it.hasNext());
+
+    it = new BoundedStartRegionIterator(pos, 3, 19, hiddenColumns);
+    assertTrue(it.hasNext());
+    result = it.next();
+    assertEquals(5, (int) result);
+    assertTrue(it.hasNext());
+    result = it.next();
+    assertEquals(19, (int) result);
+    assertFalse(it.hasNext());
+
+    pos = new HiddenCursorPosition(1, 6);
+    hiddenColumns.add(new int[] { 47, 50 });
+
+    it = new BoundedStartRegionIterator(pos, 15, 60, hiddenColumns);
+    assertTrue(it.hasNext());
+    result = it.next();
+    assertEquals(19, (int) result);
+    assertTrue(it.hasNext());
+    result = it.next();
+    assertEquals(25, (int) result);
+    assertFalse(it.hasNext());
+  }
+}