catch2/projects/SelfTest/BDDTests.cpp

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/*
* Created by Phil on 29/11/2010.
* 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"
inline bool itDoesThis(){ return true; }
inline bool itDoesThat(){ return true; }
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SCENARIO( "Do that thing with the thing", "[Tags]" ) {
GIVEN( "This stuff exists" ) {
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// make stuff exist
WHEN( "I do this" ) {
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// do this
THEN( "it should do this")
{
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REQUIRE( itDoesThis() );
AND_THEN( "do that")
REQUIRE( itDoesThat() );
}
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}
}
}
SCENARIO( "Vector resizing affects size and capacity", "[vector][bdd][size][capacity]" ) {
GIVEN( "an empty vector" ) {
std::vector<int> v;
REQUIRE( v.size() == 0 );
WHEN( "it is made larger" ) {
v.resize( 10 );
THEN( "the size and capacity go up" ) {
REQUIRE( v.size() == 10 );
REQUIRE( v.capacity() >= 10 );
AND_WHEN( "it is made smaller again" ) {
v.resize( 5 );
THEN( "the size goes down but the capacity stays the same" ) {
REQUIRE( v.size() == 5 );
REQUIRE( v.capacity() >= 10 );
}
}
}
}
WHEN( "we reserve more space" ) {
v.reserve( 10 );
THEN( "The capacity is increased but the size remains the same" ) {
REQUIRE( v.capacity() >= 10 );
REQUIRE( v.size() == 0 );
}
}
}
}
SCENARIO( "This is a really long scenario name to see how the list command deals with wrapping",
"[very long tags][lots][long][tags][verbose]"
"[one very long tag name that should cause line wrapping writing out using the list command]"
"[anotherReallyLongTagNameButThisOneHasNoObviousWrapPointsSoShouldSplitWithinAWordUsingADashCharacter]" ) {
GIVEN( "A section name that is so long that it cannot fit in a single console width" )
WHEN( "The test headers are printed as part of the normal running of the scenario" )
THEN( "The, deliberately very long and overly verbose (you see what I did there?) section names must wrap, along with an indent" )
SUCCEED("boo!");
}
namespace {
// a trivial fixture example to support SCENARIO_METHOD tests
struct Fixture
{
Fixture()
: d_counter(0)
{
}
int counter()
{
return d_counter++;
}
int d_counter;
};
}
SCENARIO_METHOD(Fixture,
"BDD tests requiring Fixtures to provide commonly-accessed data or methods",
"[bdd][fixtures]") {
const int before(counter());
GIVEN("No operations precede me") {
REQUIRE(before == 0);
WHEN("We get the count") {
const int after(counter());
THEN("Subsequently values are higher") {
REQUIRE(after > before);
}
}
}
}