package jalview.analysis;

import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import jalview.datamodel.DBRefEntry;
import jalview.datamodel.Sequence;
import jalview.datamodel.SequenceI;

import org.junit.Test;

public class CrossRefTest
{

  /**
   * Tests for the method that checks if one sequence cross-references another
   */
  @Test
  public void testHasCrossRef()
  {
    assertFalse(CrossRef.hasCrossRef(null, null));
    SequenceI seq1 = new Sequence("EMBL|A12345", "ABCDEF");
    assertFalse(CrossRef.hasCrossRef(seq1, null));
    assertFalse(CrossRef.hasCrossRef(null, seq1));
    SequenceI seq2 = new Sequence("UNIPROT|V20192", "ABCDEF");
    assertFalse(CrossRef.hasCrossRef(seq1, seq2));

    // different ref
    seq1.addDBRef(new DBRefEntry("UNIPROT", "1", "v20193"));
    assertFalse(CrossRef.hasCrossRef(seq1, seq2));

    // case-insensitive; version number is ignored
    seq1.addDBRef(new DBRefEntry("UNIPROT", "1", "v20192"));
    assertTrue(CrossRef.hasCrossRef(seq1, seq2));

    // right case!
    seq1.addDBRef(new DBRefEntry("UNIPROT", "1", "V20192"));
    assertTrue(CrossRef.hasCrossRef(seq1, seq2));
    // test is one-way only
    assertFalse(CrossRef.hasCrossRef(seq2, seq1));
  }

  /**
   * Tests for the method that checks if either sequence cross-references the
   * other
   */
  @Test
  public void testHaveCrossRef()
  {
    assertFalse(CrossRef.hasCrossRef(null, null));
    SequenceI seq1 = new Sequence("EMBL|A12345", "ABCDEF");
    assertFalse(CrossRef.haveCrossRef(seq1, null));
    assertFalse(CrossRef.haveCrossRef(null, seq1));
    SequenceI seq2 = new Sequence("UNIPROT|V20192", "ABCDEF");
    assertFalse(CrossRef.haveCrossRef(seq1, seq2));

    seq1.addDBRef(new DBRefEntry("UNIPROT", "1", "V20192"));
    assertTrue(CrossRef.haveCrossRef(seq1, seq2));
    // next is true for haveCrossRef, false for hasCrossRef
    assertTrue(CrossRef.haveCrossRef(seq2, seq1));

    // now the other way round
    seq1.setDBRef(null);
    seq2.addDBRef(new DBRefEntry("EMBL", "1", "A12345"));
    assertTrue(CrossRef.haveCrossRef(seq1, seq2));
    assertTrue(CrossRef.haveCrossRef(seq2, seq1));

    // now both ways
    seq1.addDBRef(new DBRefEntry("UNIPROT", "1", "V20192"));
    assertTrue(CrossRef.haveCrossRef(seq1, seq2));
    assertTrue(CrossRef.haveCrossRef(seq2, seq1));
  }
}