package com.github.mikkoi.maven.plugins.enforcer.rule.charsetencoding;
   
   import org.apache.commons.lang.StringUtils;
   import org.apache.maven.enforcer.rule.api.EnforcerRuleException;
   import org.apache.maven.enforcer.rule.api.EnforcerRuleHelper;
   import org.apache.maven.plugins.enforcer.EnforcerTestUtils;
   import org.junit.Test;
   
   import javax.annotation.Nonnull;
  
  import static org.junit.Assert.assertTrue;
  
  /**
   * Test class CharacterSetEncodingRule.
   */
  public final class TestCharacterSetEncodingRule {
  
      @Test
      public void testValidFiles1() {
          testFiles(true, 0, "UTF-8", "src/test/resources", "utf-8.txt", StringUtils.EMPTY);
      }
  
      @Test
      public void testValidFiles1_1() {
          testFiles(true, 0, "ISO-8859-1", "src/test/resources", "iso.txt", StringUtils.EMPTY);
      }
  
      @Test
      public void testValidFiles1_2() {
          testFiles(false, 1, "UTF-8", "src/test/resources", StringUtils.EMPTY, StringUtils.EMPTY);
      }
  
      @Test
      public void testValidFiles2() {
          testFiles(false, 2, "ASCII", "src/test/resources", StringUtils.EMPTY, StringUtils.EMPTY);
      }
  
      @Test
      public void testValidFiles3() {
          // TestClassInUTF8 can be interpreted as iso-8859-1
          testFiles(true, 0, "iso-8859-1", "src/test/java", StringUtils.EMPTY, StringUtils.EMPTY);
      }
  
      @Test
      public void testValidFiles4() {
          // This file (officially - defined by Maven - as utf-8) has no 8-bit chars so it can be ANY encoding!
          testFiles(true, 0, "utf-8", "src/test/java", StringUtils.EMPTY, StringUtils.EMPTY);
      }
  
      @Test
      public void testValidFiles5() {
          testFiles(false, 1, "ascii", "src/test/java", StringUtils.EMPTY, StringUtils.EMPTY);
      }
  
      @Test
      public void testValidFiles6() {
          testFiles(true, 0, "ISO-8859-1", "src/test/resources", StringUtils.EMPTY, StringUtils.EMPTY);
      }
  
      private void testFiles(
              boolean expected,
              int expectedFaultyFilesAmount,
              @Nonnull String encoding,
              @Nonnull String dir,
              @Nonnull String includeRegex,
              @Nonnull String excludeRegex
      ) {
          boolean isValid;
          CharacterSetEncodingRule rule = new CharacterSetEncodingRule();
          rule.setRequireEncoding(encoding);
          rule.setDirectory(dir);
          rule.setIncludeRegex(includeRegex);
          rule.setExcludeRegex(excludeRegex);
          try {
              EnforcerRuleHelper helper = EnforcerTestUtils.getHelper();
              rule.execute(helper);
              isValid = true;
          } catch (EnforcerRuleException e) {
              // e.printStackTrace();
              isValid = false;
          }
          assertTrue(isValid == expected && rule.getFaultyFiles().size() == expectedFaultyFilesAmount);
      }
  
  }