catch2/projects/SelfTest/Benchmark.tests.cpp

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#include "catch.hpp"
#include <map>
TEST_CASE( "benchmarked", "[!benchmark]" ) {
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static const int size = 100;
std::vector<int> v;
std::map<int, int> m;
BENCHMARK( "Load up a vector" ) {
v = std::vector<int>();
for(int i =0; i < size; ++i )
v.push_back( i );
}
REQUIRE( v.size() == size );
BENCHMARK( "Load up a map" ) {
m = std::map<int, int>();
for(int i =0; i < size; ++i )
m.insert( { i, i+1 } );
}
REQUIRE( m.size() == size );
BENCHMARK( "Reserved vector" ) {
v = std::vector<int>();
v.reserve(size);
for(int i =0; i < size; ++i )
v.push_back( i );
}
REQUIRE( v.size() == size );
int array[size];
BENCHMARK( "A fixed size array that should require no allocations" ) {
for(int i =0; i < size; ++i )
array[i] = i;
}
int sum = 0;
for(int i =0; i < size; ++i )
sum += array[i];
REQUIRE( sum > size );
}