/*
 * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
 * The software in this package is published under the terms of the CPAL v1.0
 * license, a copy of which has been included with this distribution in the
 * LICENSE.txt file.
 */
package org.mule.plugin.scripting;

import static org.hamcrest.CoreMatchers.hasItem;
import static org.hamcrest.CoreMatchers.notNullValue;
import static org.junit.Assert.assertThat;
import org.mule.tck.junit4.AbstractMuleTestCase;
import org.mule.tck.size.SmallTest;

import java.util.Arrays;
import java.util.Collection;
import java.util.List;

import javax.script.ScriptEngineFactory;
import javax.script.ScriptEngineManager;

import org.hamcrest.Description;
import org.hamcrest.TypeSafeMatcher;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameter;
import org.junit.runners.Parameterized.Parameters;

@SmallTest
@RunWith(Parameterized.class)
public class ScriptEnginePresenceTestCase extends AbstractMuleTestCase {

  @Parameters
  public static Collection<Object[]> data() {
    return Arrays.asList(new Object[][] {{"groovy", "groovy", "Groovy Scripting Engine", "2.0"},
        {"jython", "py", "jython", "2.7.0"}, {"jruby", "rb", "JSR 223 JRuby Engine", "1.7.24"},
        {"rhino", "js", "Mozilla Rhino", "1.6R5"}, {"rhino", "js", "Mozilla Rhino", "1.6 release 2"},
        {"jruby", "rb", "JSR 223 JRuby Engine", "1.7.24"}});
  }

  @Parameter(0)
  public String engineName;

  @Parameter(1)
  public String extension;

  @Parameter(2)
  public String fullName;

  @Parameter(3)
  public String version;

  private ScriptEngineManager scriptEngineManager;

  @Before
  public void before() {
    scriptEngineManager = new ScriptEngineManager();
  }

  @Test
  public void allEngines() {
    List<ScriptEngineFactory> engineFactories = scriptEngineManager.getEngineFactories();
    for (ScriptEngineFactory scriptEngineFactory : engineFactories) {
      scriptEngineFactory.getScriptEngine();
    }
    assertThat(engineFactories, hasItem(new TypeSafeMatcher<ScriptEngineFactory>() {

      @Override
      public void describeTo(Description description) {
        description.appendText("expected '" + fullName + " " + version + "'");
      }

      @Override
      protected void describeMismatchSafely(ScriptEngineFactory item, Description mismatchDescription) {
        mismatchDescription.appendText("was ").appendValue("'" + item.getEngineName() + " " + item.getEngineVersion() + "'");
      }

      @Override
      protected boolean matchesSafely(ScriptEngineFactory item) {
        return fullName.equals(item.getEngineName()) && version.equals(item.getEngineVersion());
      }
    }));
  }

  @Test
  public void findEngineByName() throws Exception {
    assertThat(scriptEngineManager.getEngineByName(engineName), notNullValue());
  }

  @Test
  public void findEngineByExtension() throws Exception {
    assertThat(scriptEngineManager.getEngineByExtension(extension), notNullValue());
  }
}