/*-
 * ============LICENSE_START=======================================================
 * ECOMP-PDP
 * ================================================================================
 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
 * ================================================================================
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ============LICENSE_END=========================================================
 */

package org.openecomp.policy.pdp.test;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

import java.util.ArrayList;
import java.util.List;

import org.junit.Test;

import com.att.research.xacml.api.XACML3;
import com.att.research.xacml.std.datatypes.DataTypes;
import com.att.research.xacmlatt.pdp.policy.ExpressionResult;
import com.att.research.xacmlatt.pdp.policy.FunctionArgument;
import com.att.research.xacmlatt.pdp.policy.FunctionArgumentAttributeValue;
import com.att.research.xacmlatt.pdp.std.StdFunctions;
import com.att.research.xacmlatt.pdp.std.functions.*;

/**
 * Only one function to test here.  Code copy/pasted from FunctionDefinitionEqualityTest
 * 
 * TO RUN - use jUnit
 * In Eclipse select this file or the enclosing directory, right-click and select Run As/JUnit Test
 * 
 * In the first implementation of XACML we had separate files for each XACML Function.
 * This release combines multiple Functions in fewer files to minimize code duplication.
 * This file supports the following XACML codes:
 * 		string-equal-ignore-case
 * 
 *
 */
public class FunctionDefinitionStringEqualIgnoreCaseTest {

	/*
	 * variables useful in the following tests
	 */
	List<FunctionArgument> arguments = new ArrayList<FunctionArgument>();
	
	FunctionArgumentAttributeValue stringAttr1 = null;
	FunctionArgumentAttributeValue stringAttr2 = null;
	FunctionArgumentAttributeValue stringAttr3 = null;
	FunctionArgumentAttributeValue stringAttr4 = null;
	
	FunctionArgumentAttributeValue intAttr1 = null;

	public FunctionDefinitionStringEqualIgnoreCaseTest() {
		try {
			stringAttr1 = new FunctionArgumentAttributeValue(DataTypes.DT_STRING.createAttributeValue("abc"));
			stringAttr2 = new FunctionArgumentAttributeValue(DataTypes.DT_STRING.createAttributeValue("abc"));
			stringAttr3 = new FunctionArgumentAttributeValue(DataTypes.DT_STRING.createAttributeValue("ABC"));
			stringAttr4 = new FunctionArgumentAttributeValue(DataTypes.DT_STRING.createAttributeValue("def"));
			intAttr1 = new FunctionArgumentAttributeValue(DataTypes.DT_INTEGER.createAttributeValue(1));
		} catch (Exception e) {
			fail("creating attribute e="+ e);
		}
	}
	
	
	/**
	 * String match even when Case is different
	 */
	@Test
	public void testFunctionDefinitionStringEqualIgnoreCase() {
		
		FunctionDefinitionEquality<?> fd = (FunctionDefinitionEquality<?>) StdFunctions.FD_STRING_EQUAL_IGNORE_CASE;
		
		// check identity and type of the thing created
		assertEquals(XACML3.ID_FUNCTION_STRING_EQUAL_IGNORE_CASE, fd.getId());
		assertEquals(DataTypes.DT_STRING.getId(), fd.getDataTypeArgs().getId());
		
		// just to be safe...  If tests take too long these can probably be eliminated
		assertEquals(DataTypes.DT_BOOLEAN.getId(), fd.getDataTypeId());
		assertFalse(fd.returnsBag());
		assertEquals(new Integer(2), fd.getNumArgs());
		

		
		// test normal equals and non-equals
		// check "abc" with "abc"
		arguments.add(stringAttr1);
		arguments.add(stringAttr2);
		ExpressionResult res = fd.evaluate(null, arguments);
		assertTrue(res.isOk());
		Boolean resValue = (Boolean)res.getValue().getValue();
		assertTrue(resValue);

		// check "abc" with "ABC" (should be same)
		arguments.clear();
		arguments.add(stringAttr1);
		arguments.add(stringAttr3);
		res = fd.evaluate(null, arguments);
		assertTrue(res.isOk());
		resValue = (Boolean)res.getValue().getValue();
		assertTrue(resValue);
		
		// test bad args data types?  Not needed?
		arguments.clear();
		arguments.add(stringAttr1);
		arguments.add(intAttr1);
		res = fd.evaluate(null, arguments);
		assertFalse(res.isOk());

		
//TODO - null in either first or 2nd arg => NullPointerException
	}

}