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Phil Nash
2011-04-26 08:32:40 +01:00
parent 02c877f916
commit 823ea3efd4
74 changed files with 773 additions and 15587 deletions
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projects/SelfTest/ConditionTests.cpp Normal file
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/*
* ConditionTests.cpp
* Catch - Test
*
* Created by Phil on 08/11/2010.
* Copyright 2010 Two Blue Cubes Ltd. All rights reserved.
*
* Distributed under the Boost Software License, Version 1.0. (See accompanying
* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
*
*/
#include "catch.hpp"
#include <string>
#include <limits>
struct TestData
{
TestData()
: int_seven( 7 ),
str_hello( "hello" ),
float_nine_point_one( 9.1f ),
double_pi( 3.1415926535 )
{}
int int_seven;
std::string str_hello;
float float_nine_point_one;
double double_pi;
};
// The "failing" tests all use the CHECK macro, which continues if the specific test fails.
// This allows us to see all results, even if an earlier check fails
// Equality tests
TEST_CASE( "./succeeding/conditions/equality",
"Equality checks that should succeed" )
{
TestData data;
REQUIRE( data.int_seven == 7 );
REQUIRE( data.float_nine_point_one == Approx( 9.1f ) );
REQUIRE( data.double_pi == Approx( 3.1415926535 ) );
REQUIRE( data.str_hello == "hello" );
REQUIRE( data.str_hello.size() == 5 );
double x = 1.1 + 0.1 + 0.1;
REQUIRE( x == Approx( 1.3 ) );
}
TEST_CASE( "./failing/conditions/equality",
"Equality checks that should fail" )
{
TestData data;
CHECK( data.int_seven == 6 );
CHECK( data.int_seven == 8 );
CHECK( data.int_seven == 0 );
CHECK( data.float_nine_point_one == Approx( 9.11f ) );
CHECK( data.float_nine_point_one == Approx( 9.0f ) );
CHECK( data.float_nine_point_one == Approx( 1 ) );
CHECK( data.float_nine_point_one == Approx( 0 ) );
CHECK( data.double_pi == Approx( 3.1415 ) );
CHECK( data.str_hello == "goodbye" );
CHECK( data.str_hello == "hell" );
CHECK( data.str_hello == "hello1" );
CHECK( data.str_hello.size() == 6 );
double x = 1.1 + 0.1 + 0.1;
CHECK( x == Approx( 1.301 ) );
}
TEST_CASE( "./succeeding/conditions/inequality",
"Inequality checks that should succeed" )
{
TestData data;
REQUIRE( data.int_seven != 6 );
REQUIRE( data.int_seven != 8 );
REQUIRE( data.float_nine_point_one != Approx( 9.11f ) );
REQUIRE( data.float_nine_point_one != Approx( 9.0f ) );
REQUIRE( data.float_nine_point_one != Approx( 1 ) );
REQUIRE( data.float_nine_point_one != Approx( 0 ) );
REQUIRE( data.double_pi != Approx( 3.1415 ) );
REQUIRE( data.str_hello != "goodbye" );
REQUIRE( data.str_hello != "hell" );
REQUIRE( data.str_hello != "hello1" );
REQUIRE( data.str_hello.size() != 6 );
}
TEST_CASE( "./failing/conditions/inequality",
"Inequality checks that should fails" )
{
TestData data;
CHECK( data.int_seven != 7 );
CHECK( data.float_nine_point_one != Approx( 9.1f ) );
CHECK( data.double_pi != Approx( 3.1415926535 ) );
CHECK( data.str_hello != "hello" );
CHECK( data.str_hello.size() != 5 );
}
// Ordering comparison tests
TEST_CASE( "./succeeding/conditions/ordered",
"Ordering comparison checks that should succeed" )
{
TestData data;
REQUIRE( data.int_seven < 8 );
REQUIRE( data.int_seven > 6 );
REQUIRE( data.int_seven > 0 );
REQUIRE( data.int_seven > -1 );
REQUIRE( data.int_seven >= 7 );
REQUIRE( data.int_seven >= 6 );
REQUIRE( data.int_seven <= 7 );
REQUIRE( data.int_seven <= 8 );
REQUIRE( data.float_nine_point_one > 9 );
REQUIRE( data.float_nine_point_one < 10 );
REQUIRE( data.float_nine_point_one < 9.2 );
REQUIRE( data.str_hello <= "hello" );
REQUIRE( data.str_hello >= "hello" );
REQUIRE( data.str_hello < "hellp" );
REQUIRE( data.str_hello < "zebra" );
REQUIRE( data.str_hello > "hellm" );
REQUIRE( data.str_hello > "a" );
}
TEST_CASE( "./failing/conditions/ordered",
"Ordering comparison checks that should fail" )
{
TestData data;
CHECK( data.int_seven > 7 );
CHECK( data.int_seven < 7 );
CHECK( data.int_seven > 8 );
CHECK( data.int_seven < 6 );
CHECK( data.int_seven < 0 );
CHECK( data.int_seven < -1 );
CHECK( data.int_seven >= 8 );
CHECK( data.int_seven <= 6 );
CHECK( data.float_nine_point_one < 9 );
CHECK( data.float_nine_point_one > 10 );
CHECK( data.float_nine_point_one > 9.2 );
CHECK( data.str_hello > "hello" );
CHECK( data.str_hello < "hello" );
CHECK( data.str_hello > "hellp" );
CHECK( data.str_hello > "z" );
CHECK( data.str_hello < "hellm" );
CHECK( data.str_hello < "a" );
CHECK( data.str_hello >= "z" );
CHECK( data.str_hello <= "a" );
}
// Comparisons with int literals
TEST_CASE( "./succeeding/conditions/int literals",
"Comparisons with int literals don't warn when mixing signed/ unsigned" )
{
int i = 1;
unsigned int ui = 2;
long l = 3;
unsigned long ul = 4;
char c = 5;
unsigned char uc = 6;
REQUIRE( i == 1 );
REQUIRE( ui == 2 );
REQUIRE( l == 3 );
REQUIRE( ul == 4 );
REQUIRE( c == 5 );
REQUIRE( uc == 6 );
REQUIRE( 1 == i );
REQUIRE( 2 == ui );
REQUIRE( 3 == l );
REQUIRE( 4 == ul );
REQUIRE( 5 == c );
REQUIRE( 6 == uc );
REQUIRE( (std::numeric_limits<unsigned long>::max)() > ul );
}
// These are not built normally to avoid warnings about signed/ unsigned
#ifdef ALLOW_TESTS_THAT_WARN
TEST_CASE( "succeeding/conditions/negative ints",
"Comparisons between unsigned ints and negative signed ints match c++ standard behaviour" )
{
CHECK( ( -1 > 2u ) );
CHECK( -1 > 2u );
CHECK( ( 2u < -1 ) );
CHECK( 2u < -1 );
const int minInt = (std::numeric_limits<int>::min)();
CHECK( ( minInt > 2u ) );
CHECK( minInt > 2u );
}
#endif
TEST_CASE( "./succeeding/conditions/ptr",
"Pointers can be compared to null" )
{
TestData* p = NULL;
TestData* pNULL = NULL;
REQUIRE( p == NULL );
REQUIRE( p == pNULL );
TestData data;
p = &data;
REQUIRE( p != NULL );
const TestData* cp = p;
REQUIRE( cp != NULL );
const TestData* const cpc = p;
REQUIRE( cpc != NULL );
// REQUIRE( NULL != p ); // gives warning, but should compile and run ok
}
// Not (!) tests
// The problem with the ! operator is that it has right-to-left associativity.
// This means we can't isolate it when we decompose. The simple REQUIRE( !false ) form, therefore,
// cannot have the operand value extracted. The test will work correctly, and the situation
// is detected and a warning issued.
// An alternative form of the macros (CHECK_FALSE and REQUIRE_FALSE) can be used instead to capture
// the operand value.
TEST_CASE( "./succeeding/conditions/not",
"'Not' checks that should succeed" )
{
bool falseValue = false;
REQUIRE( !false );
REQUIRE_FALSE( false );
REQUIRE( !falseValue );
REQUIRE_FALSE( falseValue );
REQUIRE( !(1 == 2) );
REQUIRE_FALSE( 1 == 2 );
}
TEST_CASE( "./failing/conditions/not",
"'Not' checks that should fail" )
{
bool trueValue = true;
CHECK( !true );
CHECK_FALSE( true );
CHECK( !trueValue );
CHECK_FALSE( trueValue );
CHECK( !(1 == 1) );
CHECK_FALSE( 1 == 1 );
}