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The support is to be considered experimental, that is, the interfaces, the first party generators and helper functions can change or be removed at any point in time. Related to #850
94 lines
2.3 KiB
C++
94 lines
2.3 KiB
C++
#include "catch.hpp"
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// Tests of generartor implementation details
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TEST_CASE("Generators impl", "[impl]") {
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using namespace Catch::Generators;
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SECTION( "range" ) {
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auto gen = range(1,3);
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CHECK( gen.size() == 2 );
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CHECK( gen[0] == 1 );
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CHECK( gen[1] == 2 );
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}
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SECTION( "fixed values" ) {
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auto gen = values( { 3, 1, 4, 1 } );
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CHECK( gen.size() == 4 );
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CHECK( gen[0] == 3 );
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CHECK( gen[1] == 1 );
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CHECK( gen[2] == 4 );
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CHECK( gen[3] == 1 );
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}
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SECTION( "combined" ) {
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auto gen = makeGenerators( range( 1, 3 ), values( { 9, 7 } ) );
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CHECK( gen.size() == 4 );
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CHECK( gen[0] == 1 );
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CHECK( gen[1] == 2 );
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CHECK( gen[2] == 9 );
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CHECK( gen[3] == 7 );
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}
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SECTION( "values" ) {
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auto gen = makeGenerators( 3, 1 );
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CHECK( gen.size() == 2 );
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CHECK( gen[0] == 3 );
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CHECK( gen[1] == 1 );
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}
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SECTION( "values2" ) {
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auto gen = makeGenerators( 3, 1 );
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CHECK( gen.size() == 2 );
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CHECK( gen[0] == 3 );
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CHECK( gen[1] == 1 );
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}
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SECTION( "type erasure" ) {
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auto gen = makeGenerators( range( 7, 10 ), 11 );
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// Make type erased version
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auto dynCopy = pf::make_unique<Generators<int>>( std::move( gen ) );
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std::unique_ptr<GeneratorBase const> base = std::move( dynCopy );
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// Only thing we can do is ask for the size
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CHECK( base->size() == 4 );
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// Restore typed version
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auto typed = dynamic_cast<Generators<int> const*>( base.get() );
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REQUIRE( typed );
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CHECK( typed->size() == 4 );
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CHECK( (*typed)[0] == 7 );
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CHECK( (*typed)[3] == 11 );
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}
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}
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TEST_CASE("Generators impl - random", "[approvals]") {
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using namespace Catch::Generators;
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SECTION( "random range" ) {
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auto gen = random( 3, 9 );
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CHECK( gen.size() == 6 );
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for( size_t i = 0; i < 6; ++i ) {
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CHECK( gen[i] >= 3 );
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CHECK( gen[i] <= 8 );
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if( i > 0 )
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CHECK( gen[i] != gen[i-1] );
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}
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}
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SECTION( "random selection" ) {
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auto gen = random<int>( 10 );
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CHECK( gen.size() == 10 );
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for( size_t i = 0; i < 10; ++i ) {
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if( i > 0 )
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CHECK( gen[i] != gen[i-1] );
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}
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}
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}
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