X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=test%2Fjalview%2Fviewmodel%2FViewportRangesTest.java;h=74cd8f9afb0d4c8369770e8b0bf647e57df2e013;hb=2066caec85bf0b332d924472fcfdbdaa07f56f1e;hp=86f0d62caeb891cc7bd1818337a427f2437a5c46;hpb=4eac8fc13cf64f8d43ac807d10aff15aeafd355c;p=jalview.git

diff --git a/test/jalview/viewmodel/ViewportRangesTest.java b/test/jalview/viewmodel/ViewportRangesTest.java
index 86f0d62..74cd8f9 100644
--- a/test/jalview/viewmodel/ViewportRangesTest.java
+++ b/test/jalview/viewmodel/ViewportRangesTest.java
@@ -1,6 +1,7 @@
 package jalview.viewmodel;
 
 import static org.testng.Assert.assertEquals;
+import static org.testng.Assert.assertFalse;
 import static org.testng.Assert.assertTrue;
 
 import jalview.analysis.AlignmentGenerator;
@@ -346,17 +347,41 @@ public class ViewportRangesTest {
   @Test(groups = { "Functional" })
   public void testScrollToWrappedVisible()
   {
-    ViewportRanges vr = new ViewportRanges(al);
+    AlignmentI al2 = gen.generate(60, 30, 1, 5, 5);
+
+    ViewportRanges vr = new ViewportRanges(al2);
+
+    // start with viewport on 5-14
     vr.setViewportStartAndWidth(5, 10);
+    assertEquals(vr.getStartRes(), 5);
+    assertEquals(vr.getEndRes(), 14);
+
+    // scroll to 12 - no change
+    assertFalse(vr.scrollToWrappedVisible(12));
+    assertEquals(vr.getStartRes(), 5);
 
-    vr.scrollToWrappedVisible(0);
+    // scroll to 2 - back to 0-9
+    assertTrue(vr.scrollToWrappedVisible(2));
     assertEquals(vr.getStartRes(), 0);
+    assertEquals(vr.getEndRes(), 9);
 
-    vr.scrollToWrappedVisible(10);
-    assertEquals(vr.getStartRes(), 10);
+    // scroll to 9 - no change
+    assertFalse(vr.scrollToWrappedVisible(9));
+    assertEquals(vr.getStartRes(), 0);
 
-    vr.scrollToWrappedVisible(15);
+    // scroll to 12 - moves to 10-19
+    assertTrue(vr.scrollToWrappedVisible(12));
     assertEquals(vr.getStartRes(), 10);
+    assertEquals(vr.getEndRes(), 19);
+
+    vr.setStartRes(13);
+    assertEquals(vr.getStartRes(), 13);
+    assertEquals(vr.getEndRes(), 22);
+
+    // scroll to 45 - jumps to 43-52
+    assertTrue(vr.scrollToWrappedVisible(45));
+    assertEquals(vr.getStartRes(), 43);
+    assertEquals(vr.getEndRes(), 52);
   }
 
   // leave until JAL-2388 is merged and we can do without viewport
@@ -699,6 +724,37 @@ public class ViewportRangesTest {
     assertEquals(vrsmall.getViewportWidth(), 7);
     assertEquals(vrsmall.getStartRes(), 0);
   }
+
+  @Test(groups = { "Functional" })
+  public void testGetWrappedMaxScroll()
+  {
+    // generate an ungapped alignment of width 140
+    int alignmentWidth = 140;
+    AlignmentI al2 = gen.generate(alignmentWidth, 15, 1, 0, 5);
+    ViewportRanges vr = new ViewportRanges(al2);
+    vr.setStartEndRes(0, 39);
+    int width = vr.getViewportWidth(); // 40
+    int partWidth = alignmentWidth % width; // 20
+  
+    /*
+     * there are 3 * 40 remainder 20 residues
+     * number of widths depends on offset (scroll right)
+     * 4 widths (maxScroll = 3) if offset by 0 or more than 19 columns
+     * 5 widths (maxScroll = 4) if 1 <= offset <= 19
+     */
+    for (int col = 0; col < alignmentWidth; col++)
+    {
+      int offset = col % width;
+      if (offset > 0 && offset < partWidth)
+      {
+        assertEquals(vr.getWrappedMaxScroll(col), 4, "col " + col);
+      }
+      else
+      {
+        assertEquals(vr.getWrappedMaxScroll(col), 3, "col " + col);
+      }
+    }
+  }
 }
 
 // mock listener for property change events