/*
 * Copyright (c) 2009, 2020 Oracle and/or its affiliates and others.
 * All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

/*
 * $Id$
 */

package com.sun.ts.tests.el.api.jakarta_el.expressionfactory;

import java.util.Properties;

import jakarta.el.ELContext;
import jakarta.el.ELException;
import jakarta.el.ExpressionFactory;
import jakarta.el.MethodExpression;
import jakarta.el.ValueExpression;

import com.sun.javatest.Status;
import com.sun.ts.lib.harness.ServiceEETest;
import com.sun.ts.lib.util.TestUtil;
import com.sun.ts.tests.el.common.elcontext.SimpleELContext;
import com.sun.ts.tests.el.common.util.ELTestUtil;
import com.sun.ts.tests.el.common.util.ExprEval;

public class ELClient extends ServiceEETest {

  private Properties testProps;

  public static void main(String[] args) {
    ELClient theTests = new ELClient();
    Status s = theTests.run(args, System.out, System.err);
    s.exit();
  }

  public void setup(String[] args, Properties p) throws Fault {
    TestUtil.logTrace("Setup method called");
    this.testProps = p;
  }

  public void cleanup() throws Fault {
    TestUtil.logTrace("Cleanup method called");
  }

  /**
   * @testName: newInstanceTest
   * 
   * @assertion_ids: EL:JAVADOC:119; EL:JAVADOC:120
   * @test_Strategy: Verify that an ExpressionFactory can be instantiated with
   *                 the newInstance() API.
   */
  public void newInstanceTest() throws Fault {

    try {
      ExpressionFactory.newInstance();
      ExpressionFactory.newInstance(null);

      Properties props = new Properties();
      props.setProperty("jakarta.el.cacheSize", "128M");
      ExpressionFactory.newInstance(props);

    } catch (Exception ex) {
      throw new Fault(ex);
    }
  }

  /**
   * @testName: createValueExpressionTest
   * 
   * @assertion_ids: EL:JAVADOC:63
   * @test_Strategy: Verify that the ExpressionFactory can handle the types of
   *                 input specified in the javadoc when invoking the
   *                 createValueExpression(ELContext, String, Class) method.
   */
  public void createValueExpressionTest() throws Fault {

    boolean pass = true;

    String[] exprStr = {

        // $ delimiter
        "${employee.lastname}",

        // # delimiter
        "#{employee.lastname}",

        // literal text
        "John Doe",

        // multiple expressions using the same delimiter
        "${employee.firstname}${employee.lastname}",
        "#{employee.firstname}#{employee.lastname}",

        // mixed literal text and expressions using the same delimiter
        "Name: ${employee.firstname}${employee.lastname}",
        "Name: #{employee.firstname}#{employee.lastname}"

    };

    ValueExpression vexp = null;

    try {
      ExpressionFactory expFactory = ExpressionFactory.newInstance();
      SimpleELContext context = new SimpleELContext();

      for (int i = 0; i < exprStr.length; ++i) {
        try {
          vexp = expFactory.createValueExpression(context, exprStr[i],
              Object.class);
        } catch (NullPointerException npe) {
          pass = false;
          TestUtil.logErr(ELTestUtil.FAIL + exprStr[i]);
          TestUtil.printStackTrace(npe);
          continue;
        } catch (ELException ee) {
          pass = false;
          TestUtil.logErr(ELTestUtil.FAIL + exprStr[i]);
          TestUtil.printStackTrace(ee);
          continue;
        }

        if (!vexp.getExpressionString().equals(exprStr[i])) {
          pass = false;
          TestUtil.logErr("Failed. Expression string mismatch.");
          TestUtil.logErr("Expected: " + exprStr[i]);
          TestUtil.logErr("Received: " + vexp.getExpressionString());
        }
      }
    } catch (Exception ex) {
      throw new Fault(ex);
    }

    if (!pass)
      throw new Fault(ELTestUtil.FAIL);
  }

  /**
   * @testName: createValueExpression2Test
   * 
   * @assertion_ids: EL:JAVADOC:64
   * @test_Strategy: Verify the functionality of the
   *                 createValueExpression(Object, Class) method.
   */
  public void createValueExpression2Test() throws Fault {

    boolean pass = true;

    // test cases mix coercable and non-coercable object/type
    // instances
    ObjectAndType[] testCases = {
        new ObjectAndType("some string", String.class),
        new ObjectAndType(null, String.class),
        new ObjectAndType(Integer.valueOf(1), String.class),
        new ObjectAndType(Double.valueOf(1.5d), Integer.class),
        new ObjectAndType("10000", Long.class),
        new ObjectAndType(Integer.valueOf(1), Boolean.class),
        new ObjectAndType(Boolean.TRUE, Character.class),
        new ObjectAndType(Integer.valueOf(1), Class.class) };

    ExpressionFactory expFactory = ExpressionFactory.newInstance();

    for (int i = 0; i < testCases.length; ++i) {
      try {
        expFactory.createValueExpression(testCases[i].obj, testCases[i].type);
      } catch (Exception e) {
        pass = false;
        TestUtil.logErr("Exception: Test Case " + i);
        TestUtil.printStackTrace(e);
      }
    }

    if (!pass)
      throw new Fault(ELTestUtil.FAIL);
  }

  /**
   * @testName: createValueExpressionELExceptionTest
   * 
   * @assertion_ids: EL:JAVADOC:63
   * @test_Strategy: Verify that
   *                 ExpressionFactory.createValueExpression(ELContext, String,
   *                 Class) throws an ELException for mixed delimiter
   *                 expressions and expressions with syntactical errors.
   */
  public void createValueExpressionELExceptionTest() throws Fault {

    boolean pass = true;

    String[] exprStr = {

        // $ delimiter with missing bracket
        "${employee.lastname",

        // # delimiter with incomplete [] operation
        "#{employee[lastname}",

        // invalid operation
        "${ 5 ! 3 }",

        // binary operation with missing operand
        "${ 5 + }",

        // multiple expressions with mixed delimiters
        "${employee.firstname}#{employee.lastname}",
        "#{employee.firstname}${employee.lastname}",

        // mixed literal text and expressions with mixed delimiters
        "Name: ${employee.firstname}#{employee.lastname}",
        "Name: #{employee.firstname}${employee.lastname}"

    };

    try {
      ExpressionFactory expFactory = ExpressionFactory.newInstance();
      SimpleELContext context = new SimpleELContext();

      for (int i = 0; i < exprStr.length; ++i) {
        try {
          expFactory.createValueExpression(context, exprStr[i], Object.class);
        } catch (ELException ee) {
          continue;
        } catch (NullPointerException npe) {
          pass = false;
          TestUtil.logErr(ELTestUtil.FAIL + exprStr[i]);
          TestUtil.printStackTrace(npe);
          continue;
        }
        pass = false;
        TestUtil.logErr("Failed. No ELException thrown when calling");
        TestUtil.logErr("createValueExpression() with parameter " + exprStr[i]);
      }
    } catch (Exception ex) {
      throw new Fault(ex);
    }

    if (!pass)
      throw new Fault(ELTestUtil.FAIL);
  }

  /**
   * @testName: createMethodExpressionTest
   * 
   * @assertion_ids: EL:JAVADOC:62
   * @test_Strategy: Verify that the ExpressionFactory can handle the types of
   *                 input specified in the javadoc when invoking the
   *                 createMethodExpression(ELContext, String, Class) method,
   *                 with the restriction that only expressions that share the
   *                 same syntax as an lvalue are allowed (EL Spec 1.2.1.2).
   */
  public void createMethodExpressionTest() throws Fault {

    boolean pass = true;

    String[] exprStr = {

        // $ delimiter
        "${add}", "${vect.add}", "${vect[add]}",

        // # delimiter
        "#{add}", "#{vect.add}", "#{vect[add]}",

        // literal text
        "add" };

    MethodExpression mexp = null;
    Class<?>[] paramTypes = {};

    try {
      ExpressionFactory expFactory = ExpressionFactory.newInstance();
      SimpleELContext context = new SimpleELContext();

      for (int i = 0; i < exprStr.length; ++i) {
        try {
          mexp = expFactory.createMethodExpression(context, exprStr[i],
              Object.class, paramTypes);
        } catch (NullPointerException npe) {
          pass = false;
          TestUtil.logErr(ELTestUtil.FAIL + exprStr[i]);
          TestUtil.printStackTrace(npe);
          continue;
        } catch (ELException ee) {
          pass = false;
          TestUtil.logErr(ELTestUtil.FAIL + exprStr[i]);
          TestUtil.printStackTrace(ee);
          continue;
        }

        if (!mexp.getExpressionString().equals(exprStr[i])) {
          pass = false;
          TestUtil.logErr("Failed. Expression string mismatch.");
          TestUtil.logErr("Expected: " + exprStr[i]);
          TestUtil.logErr("Received: " + mexp.getExpressionString());
        }
      }
    } catch (Exception ex) {
      throw new Fault(ex);
    }

    if (!pass)
      throw new Fault(ELTestUtil.FAIL);
  }

  /**
   * @testName: createMethodExpressionELExceptionTest
   * 
   * @assertion_ids: EL:JAVADOC:63; EL:JAVADOC:253
   * 
   * @test_Strategy: Verify that ExpressionFactory.createMethodExpression()
   *                 throws an ELException for expressions with syntactical
   *                 errors, and for expressions that are not lvalues.
   */
  public void createMethodExpressionELExceptionTest() throws Fault {

    boolean pass = true;

    String[] exprStr = {

        // $ delimiter with missing bracket
        "${vect.add",

        // # delimiter with incomplete [] operation
        "#{vect[add}",

        // Expressions that are not lvalues
        // constant value
        "${ 5 }",

        // unary operation
        "${ -A }",

        // binary operation
        "${ A + B }",

        // multiple expressions
        "${vect.remove}${vect.add}", "#{vect.remove}#{vect.add}",
        "${vect.remove}#{vect.add}", "#{vect.remove}${vect.add}"

    };

    Class<?>[] paramTypes = {};

    try {
      ExpressionFactory expFactory = ExpressionFactory.newInstance();
      SimpleELContext context = new SimpleELContext();

      for (int i = 0; i < exprStr.length; ++i) {
        try {
          expFactory.createMethodExpression(context, exprStr[i], Object.class,
              paramTypes);
        } catch (ELException ee) {
          continue;
        } catch (NullPointerException npe) {
          pass = false;
          TestUtil.logErr(ELTestUtil.FAIL + exprStr[i]);
          TestUtil.printStackTrace(npe);
          continue;
        }
        pass = false;
        TestUtil.logErr("Failed. No ELException thrown when calling");
        TestUtil
            .logErr("createMethodExpression() with parameter " + exprStr[i]);
      }

    } catch (Exception ex) {
      throw new Fault(ex);
    }

    if (!pass)
      throw new Fault(ELTestUtil.FAIL);
  }

  /**
   * @testName: createExpressionNPETest
   * 
   * @assertion_ids: EL:JAVADOC:62; EL:JAVADOC:63; EL:JAVADOC:64;
   *                 EL:JAVADOC:253; EL:JAVADOC:254; EL:JAVADOC:256
   * 
   * @test_Strategy: Verify that ExpressionFactory.createValueExpression() and
   *                 ExpressionFactory.createMethodExpression() throw a
   *                 NullPointerException under the conditions stated in the
   *                 javadoc.
   */
  public void createExpressionNPETest() throws Fault {
    ExpressionFactory expFactory = ExpressionFactory.newInstance();
    SimpleELContext context = new SimpleELContext();

    TestUtil.logMsg("Testing: ELContext.createValueExpression(context, "
        + "function, null)");
    ELTestUtil.checkForNPE(expFactory, "createValueExpression",
        new Class<?>[] { ELContext.class, String.class, Class.class },
        new Object[] { context, "function", null });

    TestUtil.logMsg(
        "Testing: ELContext.createValueExpression(instance, " + "null)");
    ELTestUtil.checkForNPE(expFactory, "createValueExpression",
        new Class<?>[] { Object.class, Class.class },
        new Object[] { "function", null });

    TestUtil.logMsg("Testing: ELContext.createMethodExpression(context, "
        + "instance, returnTypes, null)");
    ELTestUtil.checkForNPE(expFactory, "createMethodExpression",
        new Class<?>[] { ELContext.class, String.class, Class.class,
            Class[].class },
        new Object[] { context, "${foo}", Object.class, null });

  }

  /**
   * @testName: coerceToTypeTest
   * 
   * @assertion_ids: EL:JAVADOC:61
   * @test_Strategy: Verify that the coerceToType() method coerces an object to
   *                 a specific type according to the EL type conversion rules.
   */
  public void coerceToTypeTest() throws Fault {

    boolean pass = true;

    ObjectAndType[] testCases = {
        new ObjectAndType("some string", String.class),
        new ObjectAndType(null, String.class),
        new ObjectAndType(Integer.valueOf(1), String.class),
        new ObjectAndType(Double.valueOf(1.5d), String.class),
        new ObjectAndType(Boolean.FALSE, String.class),
        new ObjectAndType(Double.valueOf(1.5d), Integer.class),
        new ObjectAndType(Integer.valueOf(1), Float.class),
        new ObjectAndType("10000", Long.class),
        new ObjectAndType("no value", Boolean.class),
        new ObjectAndType(null, null) };

    ExpressionFactory expFactory = ExpressionFactory.newInstance();

    for (int i = 0; i < testCases.length; ++i) {
      try {
        Object coercedObj = expFactory.coerceToType(testCases[i].obj,
            testCases[i].type);
        if (coercedObj == null) {
          if (!(testCases[i].type == null || testCases[i].obj == null)) {
            pass = false;
            TestUtil.logErr("Failed: Test Case " + i);
          }

        } else if (!ExprEval.compareClass(coercedObj, testCases[i].type)) {
          pass = false;
          TestUtil.logErr("Failed: Test Case " + i);
        }
      } catch (Exception e) {
        pass = false;
        TestUtil.logErr("Exception: Test Case " + i);
        TestUtil.printStackTrace(e);
      }
    }

    if (!pass)
      throw new Fault(ELTestUtil.FAIL);
  }

  /**
   * @testName: coerceToTypeELExceptionTest
   * 
   * @assertion_ids: EL:JAVADOC:61; EL:JAVADOC:251
   * 
   * @test_Strategy: Verify that the coerceToType() method throws an ELException
   *                 for invalid type conversions.
   */
  public void coerceToTypeELExceptionTest() throws Fault {

    boolean pass = true;

    ObjectAndType[] testCases = {
        new ObjectAndType(Integer.valueOf(1), Boolean.class),
        new ObjectAndType(Boolean.FALSE, Long.class),
        new ObjectAndType(Boolean.TRUE, Character.class),
        new ObjectAndType(true, Float.class),
        new ObjectAndType("non-numeric string", Long.class),
        new ObjectAndType(Integer.valueOf(1), Class.class) };

    ExpressionFactory expFactory = ExpressionFactory.newInstance();

    for (int i = 0; i < testCases.length; ++i) {
      try {
        expFactory.coerceToType(testCases[i].obj, testCases[i].type);
        pass = false;
        TestUtil.logErr("Test Case " + i + " did not cause an exception");
      } catch (ELException elx) {
        pass = true;

      } catch (Exception e) {
        pass = false;
        TestUtil.logErr("Test Case " + i + " threw an exception");
        TestUtil.logErr("but it was not an ELException");
        TestUtil.printStackTrace(e);
      }
    }

    if (!pass)
      throw new Fault(ELTestUtil.FAIL);
  }

  private static class ObjectAndType {

    public Object obj;

    public Class<?> type;

    public ObjectAndType(Object obj, Class<?> type) {
      this.obj = obj;
      this.type = type;
    }
  }
}
