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Added vector resize test

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This commit is contained in:
Phil Nash 2013-03-25 08:47:36 +00:00
parent 2e3c5fa2ad
commit 29426b6359
1 changed files with 40 additions and 0 deletions
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40
projects/SelfTest/MiscTests.cpp
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@ -292,3 +292,43 @@ TEST_CASE( "second tag", "[tag2]" )
// while ( fgets(line, 199, output) )
// std::cout << line;
//}
TEST_CASE( "vectors can be sized and resized", "[vector]" ) {
std::vector<int> v( 5 );
REQUIRE( v.size() == 5 );
REQUIRE( v.capacity() >= 5 );
SECTION( "resizing bigger changes size and capacity", "" ) {
v.resize( 10 );
REQUIRE( v.size() == 10 );
REQUIRE( v.capacity() >= 10 );
}
SECTION( "resizing smaller changes size but not capacity", "" ) {
v.resize( 0 );
REQUIRE( v.size() == 0 );
REQUIRE( v.capacity() >= 5 );
SECTION( "We can use the 'swap trick' to reset the capacity", "" ) {
std::vector<int> empty;
empty.swap( v );
REQUIRE( v.capacity() == 0 );
}
}
SECTION( "reserving bigger changes capacity but not size", "" ) {
v.reserve( 10 );
REQUIRE( v.size() == 5 );
REQUIRE( v.capacity() >= 10 );
}
SECTION( "reserving smaller does not change size or capacity", "" ) {
v.reserve( 0 );
REQUIRE( v.size() == 5 );
REQUIRE( v.capacity() >= 5 );
}
}