firebird-mirror/src/jrd/evl_string_test.cpp

/*
 *	PROGRAM:		JRD Access Method
 *	MODULE:			evl_string.h
 *	DESCRIPTION:	Tests for streamed string functions
 *
 *  The contents of this file are subject to the Initial
 *  Developer's Public License Version 1.0 (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.ibphoenix.com/main.nfs?a=ibphoenix&page=ibp_idpl.
 *
 *  Software distributed under the License is distributed AS IS,
 *  WITHOUT WARRANTY OF ANY KIND, either express or implied.
 *  See the License for the specific language governing rights
 *  and limitations under the License.
 *
 *  The Original Code was created by Nickolay Samofatov
 *  for the Firebird Open Source RDBMS project.
 *
 *  Copyright (c) 2004 Nickolay Samofatov <nickolay@broadviewsoftware.com>
 *  and all contributors signed below.
 *
 *  All Rights Reserved.
 *  Contributor(s): ______________________________________.
 *
 *
 *  $Id: evl_string_test.cpp,v 1.7 2004-07-07 16:06:19 skidder Exp $
 *
 */

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

const isc_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);
		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);
		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);
		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);

	// Test pattern that caused endless loop during initial tests
	StringLikeEvaluator t16(p, "%a%a%a%a%a%Toronto%a", 0);
	t16.process("Each day hosts Anthony Regan and Natalie Hunter bring you a lively hour of information and fun specifically for Toronto viewers.\n"
		"1.Author Pierre Burton on his new book \"Cats I Have Known and Loved.\"\n"
		"2.  Culinary expert Rose Reisman makes something scrumptious from her new book \"The Art of Living Well.\"\n"
		"3.  All about the Universal Influenza Vaccination.\n"
		"4. Painting with flare and style...tips, dos, and don'ts from an expert at PARA Paints.\n"
		"5.  The facts on zoo animal diets.", true, false);

	return 0;
}