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// test_buffer_ref.cpp
//
// Unit tests for the buffer_ref class in the Paho MQTT C++ library.
//
/*******************************************************************************
* Copyright (c) 2017-2020 Frank Pagliughi <fpagliughi@mindspring.com>
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v2.0
* and Eclipse Distribution License v1.0 which accompany this distribution.
*
* The Eclipse Public License is available at
* http://www.eclipse.org/legal/epl-v20.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* Frank Pagliughi - initial implementation and documentation
*******************************************************************************/
#define UNIT_TESTS
#include <cstring>
#include "catch2_version.h"
#include "mqtt/buffer_ref.h"
using namespace mqtt;
static const string EMPTY_STR;
static const string STR{"Some random string"};
static const binary BIN{"\x0\x1\x2\x3\x4\x5\x6\x7"};
static const char* CSTR = "Another random string";
static const size_t CSTR_LEN = strlen(CSTR);
// ----------------------------------------------------------------------
// Test the default constructor
// ----------------------------------------------------------------------
TEST_CASE("dflt_ctor", "[collections]")
{
string_ref sr;
REQUIRE_FALSE(sr);
REQUIRE(sr.empty());
}
// ----------------------------------------------------------------------
// Test the string copy constructor
// ----------------------------------------------------------------------
TEST_CASE("str_copy_ctor", "[collections]")
{
string_ref sr(STR);
REQUIRE(STR == sr.str());
}
// ----------------------------------------------------------------------
// Test the string move constructor
// ----------------------------------------------------------------------
TEST_CASE("str_move_ctor", "[collections]")
{
string str(STR);
string_ref sr(std::move(str));
REQUIRE(STR == sr.str());
REQUIRE(EMPTY_STR == str);
}
// ----------------------------------------------------------------------
// Test the c-string constructor
// ----------------------------------------------------------------------
TEST_CASE("cstr_ctor", "[collections]")
{
string_ref sr(CSTR);
REQUIRE(CSTR_LEN == strlen(sr.c_str()));
REQUIRE(0 == strcmp(CSTR, sr.c_str()));
}
// ----------------------------------------------------------------------
// Test the pointer copy constructor
// ----------------------------------------------------------------------
TEST_CASE("ptr_copy_ctor", "[collections]")
{
string_ptr sp(new string(STR));
string_ref sr(sp);
REQUIRE(STR == sr.str());
}
// ----------------------------------------------------------------------
// Test the pointer move constructor
// ----------------------------------------------------------------------
TEST_CASE("ptr_move_ctor", "[collections]")
{
string_ptr sp(new string(STR));
string_ref sr(std::move(sp));
REQUIRE(STR == sr.str());
REQUIRE_FALSE(sp);
}
// ----------------------------------------------------------------------
// Test the copy constructor
// ----------------------------------------------------------------------
TEST_CASE("copy_ctor", "[collections]")
{
string_ref orgSR(STR);
string_ref sr(orgSR);
REQUIRE(STR == sr.str());
REQUIRE(orgSR.ptr().get() == sr.ptr().get());
REQUIRE(2 == sr.ptr().use_count());
}
// ----------------------------------------------------------------------
// Test the move constructor
// ----------------------------------------------------------------------
TEST_CASE("move_ctor", "[collections]")
{
string_ref orgSR(STR);
string_ref sr(std::move(orgSR));
REQUIRE(STR == sr.str());
REQUIRE_FALSE(orgSR);
REQUIRE(1 == sr.ptr().use_count());
}
// ----------------------------------------------------------------------
// Test the copy assignment
// ----------------------------------------------------------------------
TEST_CASE("copy_assignment", "[collections]")
{
string_ref sr, orgSR(STR);
sr = orgSR;
REQUIRE(STR == sr.str());
REQUIRE(orgSR.ptr().get() == sr.ptr().get());
REQUIRE(2 == sr.ptr().use_count());
// Test for true copy
orgSR = EMPTY_STR;
REQUIRE(STR == sr.str());
}
// ----------------------------------------------------------------------
// Test the move assignment
// ----------------------------------------------------------------------
TEST_CASE("move_assignment", "[collections]")
{
string_ref sr, orgSR(STR);
sr = std::move(orgSR);
REQUIRE(STR == sr.str());
REQUIRE_FALSE(orgSR);
REQUIRE(1 == sr.ptr().use_count());
}
// ----------------------------------------------------------------------
// Test the string copy assignment
// ----------------------------------------------------------------------
TEST_CASE("str_copy_assignment", "[collections]")
{
string str(STR);
string_ref sr;
sr = str;
REQUIRE(STR == sr.str());
str = EMPTY_STR;
REQUIRE(STR == sr.str());
}
// ----------------------------------------------------------------------
// Test the string move assignment
// ----------------------------------------------------------------------
TEST_CASE("str_move_assignment", "[collections]")
{
string str(STR);
string_ref sr;
sr = std::move(str);
REQUIRE(STR == sr.str());
REQUIRE(EMPTY_STR == str);
REQUIRE(1 == sr.ptr().use_count());
}
// ----------------------------------------------------------------------
// Test the c-string assignment
// ----------------------------------------------------------------------
TEST_CASE("cstr_assignment", "[collections]")
{
string_ref sr;
sr = CSTR;
REQUIRE(CSTR_LEN == strlen(sr.c_str()));
REQUIRE(0 == strcmp(CSTR, sr.c_str()));
}
// ----------------------------------------------------------------------
// Test the pointer copy assignment
// ----------------------------------------------------------------------
TEST_CASE("ptr_copy_assignment", "[collections]")
{
string_ptr sp(new string(STR));
string_ref sr;
sr = sp;
REQUIRE(STR == sr.str());
}
// ----------------------------------------------------------------------
// Test the pointer move assignment
// ----------------------------------------------------------------------
TEST_CASE("ptr_move_assignment", "[collections]")
{
string_ptr sp(new string(STR));
string_ref sr;
sr = std::move(sp);
REQUIRE(STR == sr.str());
REQUIRE_FALSE(sp);
}
// ----------------------------------------------------------------------
// Test the reset
// ----------------------------------------------------------------------
TEST_CASE("reset", "[collections]")
{
string_ref sr(STR);
sr.reset();
REQUIRE_FALSE(sr);
REQUIRE(sr.empty());
}
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