package jalview.util.matcher;

import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertFalse;
import static org.testng.Assert.assertNotEquals;
import static org.testng.Assert.assertTrue;
import static org.testng.Assert.fail;

import org.testng.annotations.Test;

public class MatcherTest
{
  @Test(groups = "Functional")
  public void testConstructor()
  {
    MatcherI m = new Matcher(Condition.Contains, "foo");
    assertEquals(m.getCondition(), Condition.Contains);
    assertEquals(m.getPattern(), "FOO"); // all comparisons upper-cased
    assertEquals(m.getFloatValue(), 0f);

    m = new Matcher(Condition.GT, -2.1f);
    assertEquals(m.getCondition(), Condition.GT);
    assertEquals(m.getPattern(), "-2.1");
    assertEquals(m.getFloatValue(), -2.1f);

    m = new Matcher(Condition.NotContains, "-1.2f");
    assertEquals(m.getCondition(), Condition.NotContains);
    assertEquals(m.getPattern(), "-1.2F");
    assertEquals(m.getFloatValue(), 0f);

    m = new Matcher(Condition.GE, "-1.2f");
    assertEquals(m.getCondition(), Condition.GE);
    assertEquals(m.getPattern(), "-1.2");
    assertEquals(m.getFloatValue(), -1.2f);

    try
    {
      new Matcher(null, 0f);
      fail("Expected exception");
    } catch (NullPointerException e)
    {
      // expected
    }

    try
    {
      new Matcher(Condition.LT, "123,456");
      fail("Expected exception");
    } catch (NumberFormatException e)
    {
      // expected
    }
  }

  /**
   * Tests for float comparison conditions
   */
  @Test(groups = "Functional")
  public void testMatches_float()
  {
    /*
     * EQUALS test
     */
    MatcherI m = new Matcher(Condition.EQ, 2f);
    assertTrue(m.matches("2"));
    assertTrue(m.matches("2.0"));
    assertFalse(m.matches("2.01"));

    /*
     * NOT EQUALS test
     */
    m = new Matcher(Condition.NE, 2f);
    assertFalse(m.matches("2"));
    assertFalse(m.matches("2.0"));
    assertTrue(m.matches("2.01"));

    /*
     * >= test
     */
    m = new Matcher(Condition.GE, 2f);
    assertTrue(m.matches("2"));
    assertTrue(m.matches("2.1"));
    assertFalse(m.matches("1.9"));

    /*
     * > test
     */
    m = new Matcher(Condition.GT, 2f);
    assertFalse(m.matches("2"));
    assertTrue(m.matches("2.1"));
    assertFalse(m.matches("1.9"));

    /*
     * <= test
     */
    m = new Matcher(Condition.LE, 2f);
    assertTrue(m.matches("2"));
    assertFalse(m.matches("2.1"));
    assertTrue(m.matches("1.9"));

    /*
     * < test
     */
    m = new Matcher(Condition.LT, 2f);
    assertFalse(m.matches("2"));
    assertFalse(m.matches("2.1"));
    assertTrue(m.matches("1.9"));
  }

  @Test(groups = "Functional")
  public void testMatches_floatNullOrInvalid()
  {
    for (Condition cond : Condition.values())
    {
      if (cond.isNumeric())
      {
        MatcherI m = new Matcher(cond, 2f);
        assertFalse(m.matches(null));
        assertFalse(m.matches(""));
        assertFalse(m.matches("two"));
      }
    }
  }

  /**
   * Tests for string comparison conditions
   */
  @Test(groups = "Functional")
  public void testMatches_pattern()
  {
    /*
     * Contains
     */
    MatcherI m = new Matcher(Condition.Contains, "benign");
    assertTrue(m.matches("benign"));
    assertTrue(m.matches("MOSTLY BENIGN OBSERVED")); // not case-sensitive
    assertFalse(m.matches("pathogenic"));
    assertFalse(m.matches(null));

    /*
     * does not contain
     */
    m = new Matcher(Condition.NotContains, "benign");
    assertFalse(m.matches("benign"));
    assertFalse(m.matches("MOSTLY BENIGN OBSERVED")); // not case-sensitive
    assertTrue(m.matches("pathogenic"));
    assertTrue(m.matches(null)); // null value passes this condition

    /*
     * matches
     */
    m = new Matcher(Condition.Matches, "benign");
    assertTrue(m.matches("benign"));
    assertTrue(m.matches(" Benign ")); // trim before testing
    assertFalse(m.matches("MOSTLY BENIGN"));
    assertFalse(m.matches("pathogenic"));
    assertFalse(m.matches(null));

    /*
     * does not match
     */
    m = new Matcher(Condition.NotMatches, "benign");
    assertFalse(m.matches("benign"));
    assertFalse(m.matches(" Benign ")); // trim before testing
    assertTrue(m.matches("MOSTLY BENIGN"));
    assertTrue(m.matches("pathogenic"));
    assertTrue(m.matches(null));

    /*
     * value is present (is not null)
     */
    m = new Matcher(Condition.Present, null);
    assertTrue(m.matches("benign"));
    assertTrue(m.matches(""));
    assertFalse(m.matches(null));

    /*
     * value is not present (is null)
     */
    m = new Matcher(Condition.NotPresent, null);
    assertFalse(m.matches("benign"));
    assertFalse(m.matches(""));
    assertTrue(m.matches(null));

    /*
     * a float with a string match condition will be treated as string
     */
    Matcher m1 = new Matcher(Condition.Contains, "32");
    assertFalse(m1.matches(-203f));
    assertTrue(m1.matches(-4321.0f));
  }

  /**
   * If a float is passed with a string condition it gets converted to a string
   */
  @Test(groups = "Functional")
  public void testMatches_floatWithStringCondition()
  {
    MatcherI m = new Matcher(Condition.Contains, 1.2e-6f);
    assertTrue(m.matches("1.2e-6"));

    m = new Matcher(Condition.Contains, 0.0000001f);
    assertTrue(m.matches("1.0e-7"));
    assertTrue(m.matches("1.0E-7"));
    assertFalse(m.matches("0.0000001f"));
  }

  @Test(groups = "Functional")
  public void testToString()
  {
    MatcherI m = new Matcher(Condition.LT, 1.2e-6f);
    assertEquals(m.toString(), "LT 1.2E-6");

    m = new Matcher(Condition.NotMatches, "ABC");
    assertEquals(m.toString(), "NotMatches 'ABC'");

    m = new Matcher(Condition.Contains, -1.2f);
    assertEquals(m.toString(), "Contains '-1.2'");
  }

  @Test(groups = "Functional")
  public void testEquals()
  {
    /*
     * string condition
     */
    MatcherI m = new Matcher(Condition.NotMatches, "ABC");
    assertFalse(m.equals(null));
    assertFalse(m.equals("foo"));
    assertTrue(m.equals(m));
    assertTrue(m.equals(new Matcher(Condition.NotMatches, "ABC")));
    // not case-sensitive:
    assertTrue(m.equals(new Matcher(Condition.NotMatches, "abc")));
    assertFalse(m.equals(new Matcher(Condition.Matches, "ABC")));
    assertFalse(m.equals(new Matcher(Condition.NotMatches, "def")));

    /*
     * numeric conditions
     */
    m = new Matcher(Condition.LT, -1f);
    assertFalse(m.equals(null));
    assertFalse(m.equals("foo"));
    assertTrue(m.equals(m));
    assertTrue(m.equals(new Matcher(Condition.LT, -1f)));
    assertTrue(m.equals(new Matcher(Condition.LT, "-1f")));
    assertTrue(m.equals(new Matcher(Condition.LT, "-1.00f")));
    assertFalse(m.equals(new Matcher(Condition.LE, -1f)));
    assertFalse(m.equals(new Matcher(Condition.GE, -1f)));
    assertFalse(m.equals(new Matcher(Condition.NE, -1f)));
    assertFalse(m.equals(new Matcher(Condition.LT, 1f)));
    assertFalse(m.equals(new Matcher(Condition.LT, -1.1f)));
  }

  @Test(groups = "Functional")
  public void testHashCode()
  {
    MatcherI m1 = new Matcher(Condition.NotMatches, "ABC");
    MatcherI m2 = new Matcher(Condition.NotMatches, "ABC");
    MatcherI m3 = new Matcher(Condition.NotMatches, "AB");
    MatcherI m4 = new Matcher(Condition.Matches, "ABC");
    assertEquals(m1.hashCode(), m2.hashCode());
    assertNotEquals(m1.hashCode(), m3.hashCode());
    assertNotEquals(m1.hashCode(), m4.hashCode());
    assertNotEquals(m3.hashCode(), m4.hashCode());
  }
}