javaacessibilitytest.java

這是一個javascript 的 interpreter是了解 web browser的好材料

/**
 * 
 */
package org.mozilla.javascript.tests;

import junit.framework.TestCase;

import org.mozilla.javascript.Context;
import org.mozilla.javascript.ContextAction;
import org.mozilla.javascript.ContextFactory;
import org.mozilla.javascript.NativeJavaObject;
import org.mozilla.javascript.Script;
import org.mozilla.javascript.tools.shell.Global;
import org.mozilla.javascript.tools.shell.ShellContextFactory;

/**
 * @author donnamalayeri
 */
public class JavaAcessibilityTest extends TestCase {

  protected final Global global = new Global();
  String importClass = "importClass(Packages.org.mozilla.javascript.tests.PrivateAccessClass)\n";
  
  public JavaAcessibilityTest() {
    global.init(contextFactory);
  }
  
  private ContextFactory contextFactory = new ShellContextFactory() {
    protected boolean hasFeature(Context cx, int featureIndex) {
      if (featureIndex == Context.FEATURE_ENHANCED_JAVA_ACCESS)
            return true; 
      return super.hasFeature(cx, featureIndex);
    }
  };
  
  public void testAccessingFields() {
    Object result = runScript(importClass + "PrivateAccessClass.staticPackagePrivateInt");
    assertEquals(new Integer(0), result);
    
    result = runScript(importClass + "PrivateAccessClass.staticPrivateInt");
    assertEquals(new Integer(1), result);
    
    result = runScript(importClass + "PrivateAccessClass.staticProtectedInt");
    assertEquals(new Integer(2), result);
    
    result = runScript(importClass + "new PrivateAccessClass().packagePrivateString");
    assertEquals("package private", ((NativeJavaObject) result).unwrap());
    
    result = runScript(importClass + "new PrivateAccessClass().privateString");
    assertEquals("private", ((NativeJavaObject) result).unwrap());
    
    result = runScript(importClass + "new PrivateAccessClass().protectedString");
    assertEquals("protected", ((NativeJavaObject) result).unwrap());

    result = runScript(importClass + "new PrivateAccessClass.PrivateNestedClass().packagePrivateInt");
    assertEquals(new Integer(0), result);
    
    result = runScript(importClass + "new PrivateAccessClass.PrivateNestedClass().privateInt");
    assertEquals(new Integer(1), result);

    result = runScript(importClass + "new PrivateAccessClass.PrivateNestedClass().protectedInt");
    assertEquals(new Integer(2), result);
  }
  
  public void testAccessingMethods() {  
    Object result = runScript(importClass + "PrivateAccessClass.staticPackagePrivateMethod()");
    assertEquals(new Integer(0), result);
    
    result = runScript(importClass + "PrivateAccessClass.staticPrivateMethod()");
    assertEquals(new Integer(1), result);    
    
    result = runScript(importClass + "PrivateAccessClass.staticProtectedMethod()");
    assertEquals(new Integer(2), result);

    result = runScript(importClass + "new PrivateAccessClass().packagePrivateMethod()");
    assertEquals(new Integer(3), result);
    
    result = runScript(importClass + "new PrivateAccessClass().privateMethod()");
    assertEquals(new Integer(4), result);    
    
    result = runScript(importClass + "new PrivateAccessClass().protectedMethod()");
    assertEquals(new Integer(5), result);
  }
  
  public void testAccessingConstructors() {
    runScript(importClass + "new PrivateAccessClass(\"foo\")");
    runScript(importClass + "new PrivateAccessClass(5)");
    runScript(importClass + "new PrivateAccessClass(5, \"foo\")");
  }
  
  private Object runScript(final String scriptSourceText) {
    return this.contextFactory.call(new ContextAction() {
      public Object run(Context context) {
        Script script = context.compileString(scriptSourceText, "", 1, null);
        return script.exec(context, global);
      }
    });
  }  
}