package com.atlassian.plugin.spring.scanner.runtime.impl.util;
   
   import org.junit.Assume;
   import org.junit.Test;
   import org.junit.runner.RunWith;
   import org.mockito.runners.MockitoJUnitRunner;
   
   import java.util.regex.Matcher;
   import java.util.regex.Pattern;
  
  import static org.junit.Assert.fail;
  
  /**
   * Just a smoke test to catch if the classnames we use to determine which product we're in ever change
   */
  @RunWith(MockitoJUnitRunner.class)
  public class ProductFilterUtilTest {
      @Test
      public void testBambooClassIsPresent() {
          assertClassIsPresentOnClasspath(ProductFilterUtil.CLASS_ON_BAMBOO_CLASSPATH, "Bamboo");
      }
  
      @Test
      public void testBitbucketClassIsPresent() {
          Assume.assumeTrue(isAtLeastJavaVersion(8));
          assertClassIsPresentOnClasspath(ProductFilterUtil.CLASS_ON_BITBUCKET_CLASSPATH, "Bitbucket");
      }
  
      @Test
      public void testConfluenceClassIsPresent() {
          assertClassIsPresentOnClasspath(ProductFilterUtil.CLASS_ON_CONFLUENCE_CLASSPATH, "Confluence");
      }
  
      @Test
      public void testFecruClassIsPresent() {
          assertClassIsPresentOnClasspath(ProductFilterUtil.CLASS_ON_FECRU_CLASSPATH, "Fecru");
      }
  
      @Test
      public void testJiraClassIsPresent() {
          assertClassIsPresentOnClasspath(ProductFilterUtil.CLASS_ON_JIRA_CLASSPATH, "JIRA");
      }
  
      @Test
      public void testStashClassIsPresent() {
          Assume.assumeTrue(isAtLeastJavaVersion(7));
          assertClassIsPresentOnClasspath(ProductFilterUtil.CLASS_ON_STASH_CLASSPATH, "Stash");
      }
  
      @Test
      public void testRefappClassIsPresent() {
          assertClassIsPresentOnClasspath(ProductFilterUtil.CLASS_ON_REFAPP_CLASSPATH, "Refapp");
      }
  
      private void assertClassIsPresentOnClasspath(String clazz, String product) {
          try {
              Class.forName(clazz);
          } catch (ClassNotFoundException e) {
              fail(String.format(
                      "Class %s not found on classpath, is it no longer exported from %s? If so, %s will need to be " +
                              "updated to use an exported class from %s.",
                      clazz, product, ProductFilterUtil.class.getName(), product));
          }
      }
  
      private boolean isAtLeastJavaVersion(int majorVersion) {
          Pattern pattern = Pattern.compile("(\\d+)\\.(\\d+)");
          Matcher matcher = pattern.matcher(System.getProperty("java.version"));
          if (matcher.find()) {
              int version = Integer.parseInt(matcher.group(2));
              return version >= majorVersion;
          }
          return false;
      }
  }