+
+ @Test
+ public void testIsValidCursor()
+ {
+ Sequence sq = new Sequence("Seq", "ABC--DE-F", 8, 13);
+ assertFalse(sq.isValidCursor(null));
+
+ /*
+ * cursor is valid if it has valid sequence ref and changeCount token
+ * and positions within the range of the sequence
+ */
+ int changeCount = (int) PA.getValue(sq, "changeCount");
+ SequenceCursor cursor = new SequenceCursor(sq, 13, 1, changeCount);
+ assertTrue(sq.isValidCursor(cursor));
+
+ /*
+ * column position outside [0 - length-1] is rejected
+ */
+ cursor = new SequenceCursor(sq, 13, -1, changeCount);
+ assertFalse(sq.isValidCursor(cursor));
+ cursor = new SequenceCursor(sq, 13, 9, changeCount);
+ assertFalse(sq.isValidCursor(cursor));
+ cursor = new SequenceCursor(sq, 7, 8, changeCount);
+ assertFalse(sq.isValidCursor(cursor));
+ cursor = new SequenceCursor(sq, 14, 2, changeCount);
+ assertFalse(sq.isValidCursor(cursor));
+
+ /*
+ * wrong sequence is rejected
+ */
+ cursor = new SequenceCursor(null, 13, 1, changeCount);
+ assertFalse(sq.isValidCursor(cursor));
+ cursor = new SequenceCursor(new Sequence("Seq", "abc"), 13, 1,
+ changeCount);
+ assertFalse(sq.isValidCursor(cursor));
+
+ /*
+ * wrong token value is rejected
+ */
+ cursor = new SequenceCursor(sq, 13, 1, changeCount + 1);
+ assertFalse(sq.isValidCursor(cursor));
+ cursor = new SequenceCursor(sq, 13, 1, changeCount - 1);
+ assertFalse(sq.isValidCursor(cursor));
+ }
+
+ @Test(groups = { "Functional" })
+ public void testFindPosition_withCursorAndEdits()
+ {
+ Sequence sq = new Sequence("test/8-13", "-A--BCD-EF--");
+
+ // find F pos given A
+ assertEquals(13, sq.findPosition(10, new SequenceCursor(sq, 8, 2, 0)));
+ int token = (int) PA.getValue(sq, "changeCount"); // 0
+ SequenceCursor cursor = (SequenceCursor) PA.getValue(sq, "cursor");
+ assertEquals(new SequenceCursor(sq, 13, 10, token), cursor);
+
+ /*
+ * setSequence should invalidate the cursor cached by the sequence
+ */
+ sq.setSequence("-A-BCD-EF---"); // one gap removed
+ assertEquals(8, sq.getStart()); // sanity check
+ assertEquals(11, sq.findPosition(5)); // D11
+ // cursor should now be at [D 6]
+ cursor = (SequenceCursor) PA.getValue(sq, "cursor");
+ assertEquals(new SequenceCursor(sq, 11, 6, ++token), cursor);
+
+ /*
+ * deleteChars should invalidate the cached cursor
+ */
+ sq.deleteChars(2, 5); // delete -BC
+ assertEquals("-AD-EF---", sq.getSequenceAsString());
+ assertEquals(8, sq.getStart()); // sanity check
+ assertEquals(10, sq.findPosition(4)); // E10
+ // cursor should now be at [E 5]
+ cursor = (SequenceCursor) PA.getValue(sq, "cursor");
+ assertEquals(new SequenceCursor(sq, 10, 5, ++token), cursor);
+
+ /*
+ * Edit to insert gaps should invalidate the cached cursor
+ * insert 2 gaps at column[3] to make -AD---EF---
+ */
+ SequenceI[] seqs = new SequenceI[] { sq };
+ AlignmentI al = new Alignment(seqs);
+ new EditCommand().appendEdit(Action.INSERT_GAP, seqs, 3, 2, al, true);
+ assertEquals("-AD---EF---", sq.getSequenceAsString());
+ assertEquals(10, sq.findPosition(4)); // E10
+ // cursor should now be at [D 3]
+ cursor = (SequenceCursor) PA.getValue(sq, "cursor");
+ assertEquals(new SequenceCursor(sq, 9, 3, ++token), cursor);
+
+ /*
+ * insertCharAt should invalidate the cached cursor
+ * insert CC at column[4] to make -AD-CC--EF---
+ */
+ sq.insertCharAt(4, 2, 'C');
+ assertEquals("-AD-CC--EF---", sq.getSequenceAsString());
+ assertEquals(13, sq.findPosition(9)); // F13
+ // cursor should now be at [F 10]
+ cursor = (SequenceCursor) PA.getValue(sq, "cursor");
+ assertEquals(new SequenceCursor(sq, 13, 10, ++token), cursor);
+ }