firebird-mirror/src/jrd/evl_string_test.cpp

/*
 *	PROGRAM:		JRD Access Method
 *	MODULE:			evl_string.h
 *	DESCRIPTION:	Tests for streamed string functions
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * You may obtain a copy of the Licence at
 * http://www.gnu.org/licences/lgpl.html
 * 
 * As a special exception this file can also be included in modules
 * with other source code as long as that source code has been 
 * released under an Open Source Initiative certificed licence.  
 * More information about OSI certification can be found at: 
 * http://www.opensource.org 
 * 
 * This module is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public Licence for more details.
 * 
 * This module was created by members of the firebird development 
 * team.  All individual contributions remain the Copyright (C) of 
 * those individuals and all rights are reserved.  Contributors to 
 * this file are either listed below or can be obtained from a CVS 
 * history command.
 *
 *  Created by: Nickolay Samofatov <skidder@bssys.com>
 *
 *  Contributor(s):
 * 
 *
 *  $Id: evl_string_test.cpp,v 1.3 2003-11-20 17:32:20 skidder Exp $
 *
 */

#include "../common/classes/alloc.h"
#include <assert.h>

const gds_like_escape_invalid = 1;

void ERR_post(...) {
	throw std::exception();
}

#include "evl_string.h"

using namespace Firebird;

class StringLikeEvaluator : public LikeEvaluator<char> {
public:
	StringLikeEvaluator(MemoryPool *pool, const char *pattern, char escape_char) : 
	  LikeEvaluator<char>(pool, pattern, (SSHORT)strlen(pattern), escape_char, '%', '_') {}

	void process(const char *data, bool more, bool result) {
		SSHORT len = (SSHORT)strlen(data);
		if (len) {
			bool needMore = processNextChunk(data, len);
			assert(more == needMore);
		}
		assert(getResult() == result);
	}
};

class StringStartsEvaluator : public StartsEvaluator<char> {
public:
	StringStartsEvaluator(const char *pattern) : 
	  StartsEvaluator<char>(pattern, (SSHORT)strlen(pattern)) {}

	void process(const char *data, bool more, bool result) {
		SSHORT len = (SSHORT)strlen(data);
		if (len) {
			bool needMore = processNextChunk(data, len);
			assert(more == needMore);
		}
		assert(getResult() == result);
	}
};

class StringContainsEvaluator : public ContainsEvaluator<char> {
public:
	StringContainsEvaluator(MemoryPool *pool, const char *pattern) : 
	  ContainsEvaluator<char>(pool, pattern, (SSHORT)strlen(pattern)) {}

	void process(const char *data, bool more, bool result) {
		SSHORT len = (SSHORT)strlen(data);
		if (len) {
			bool needMore = processNextChunk(data, len);
			assert(more == needMore);
		}
		assert(getResult() == result);
	}
};

int main() {
	MemoryPool *p = MemoryPool::createPool();

	// The tests below attempt to do full code coverage for the LikeEvaluator
	// Every line of evl_string.h code is covered by the tests

	// '' LIKE ''
	StringLikeEvaluator t1(p, "", 0);
	t1.process("", true, true);
	t1.process("something", false, false);

	// 'test' LIKE 'test'
	StringLikeEvaluator t2(p, "test", 0);
	t2.process("test", true, true);
	t2.process("a", false, false);

	// '_%test' LIKE 'test'
	StringLikeEvaluator t3(p, "_%test", 0);
	t3.process("test", true, false);
	t3.reset();
	t3.process("ntest", true, true);
	t3.process("yep?", true, false);

	// Tests for escaped patterns
	StringLikeEvaluator t4(p, "\\%\\_%some_text_", '\\');
	t4.process("%_(is it nice?)some!text?", true, true);
	t4.reset();
	t4.process("%_some text", true, false);
	t4.process(".", true, true);
	
	// More escaped patterns
	StringLikeEvaluator t5(p, "%sosome_\\%text%", '\\');
	t5.process("sosomso", true, false);
	t5.process("sosome.%text", false, true);

	// More escaped patterns
	StringLikeEvaluator t6(p, "%sosome_text\\%%", '\\');
	t6.process("sosomso", true, false);
	t6.process("sosome.text%", false, true);

	// Check for invalid escapes
	try {
		StringLikeEvaluator t7(p, "%sosome_text\\?", '\\');
		assert(false);
	} catch (const std::exception&) {
	}

	// Test single '%' pattern
	StringLikeEvaluator t8(p, "%%%%%", 0);
	t8.process("something", false, true);
	t8.process("something else", false, true);

	// Test optimization of consequitive "_" and "%" subpatterns
	StringLikeEvaluator t9(p, "%__%%_A", 0);
	t9.process("ABAB", true, false);
	t9.process("ABA", true, true);

	// Check multi-branch search
	StringLikeEvaluator t10(p, "%test____test%", 0);
	t10.process("test1234", true, false);
	t10.process("test...", false, true);
	t10.reset();
	t10.process("testestestestetest", false, true);

	// Check simple matching
	StringLikeEvaluator t11(p, "test%", 0);
	t11.process("test11", false, true);
	t11.reset();
	t11.process("nop", false, false);

	// Check skip counting
	StringLikeEvaluator t12(p, "test___", 0);
	t12.process("test1", true, false);
    t12.process("23", true, true);
	t12.process("45", false, false);
	t12.reset();
	t12.process("test1234", false, false);

    // Check simple search
	StringLikeEvaluator t13(p, "%test%", 0);
	t13.process("1234tetes", true, false);
    t13.process("t", false, true);

	// Test STARTS
	StringStartsEvaluator t14("test");
	t14.process("test", false, true);
	t14.reset();
	t14.process("te!", false, false);
	t14.reset();
	t14.process("te", true, false);
	t14.process("st!", false, true);

	// Test CONTAINS
	StringContainsEvaluator t15(p, "test");
	t15.process("123test456", false, true);
	t15.reset();
	t15.process("1234tetes", true, false);
    t15.process("t", false, true);
	return 0;
}