package de.pdark.decentxml;

import static org.junit.Assert.*;

import de.pdark.decentxml.validation.CharValidator;
import org.junit.Test;

public class CharValidatorTest {
  @Test
  public void testHighSurrogatePointOnly() throws Exception {
    assertEquals("Unexpected end of input", check("\ud800"));
  }

  @Test
  public void testSurrogatePair_D800_3C() throws Exception {
    assertEquals(
        "Character after first in surrogate pair is not between 0xDC00 and 0xDFFF: 3c",
        check("\ud800<"));
  }

  @Test
  public void testFFFF() throws Exception {
    assertEquals(
        "Allowed values are #x09 | #x0a | #x0d | [#x0020-#xD7FF] | [#xE000-#xFFFD] |"
            + " [#x10000-#x10FFFF]: [#xffff]",
        check("\uffff"));
  }

  @Test
  public void testFFFE() throws Exception {
    assertEquals(
        "Allowed values are #x09 | #x0a | #x0d | [#x0020-#xD7FF] | [#xE000-#xFFFD] |"
            + " [#x10000-#x10FFFF]: [#xfffe]",
        check("\ufffe"));
  }

  public String check(String string) {
    XMLStringSource source = new XMLStringSource(string);
    CharValidator v = new CharValidator();
    return v.isValid(source, 0);
  }
}