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Redo generator interface

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Martin Hořeňovský 2019-01-27 19:46:28 +01:00
parent 64a9c02315
commit e46a70f829
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13 changed files with 1284 additions and 2014 deletions
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121
projects/SelfTest/IntrospectiveTests/GeneratorsImpl.tests.cpp
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@ -1,93 +1,46 @@
#include "catch.hpp"
// Tests of generartor implementation details
TEST_CASE("Generators impl", "[impl]") {
// Tests of generator implementation details
TEST_CASE("Generators internals", "[generators][internals]") {
using namespace Catch::Generators;
SECTION( "range" ) {
auto gen = range(1,3);
CHECK( gen.size() == 2 );
CHECK( gen[0] == 1 );
CHECK( gen[1] == 2 );
SECTION("Single value") {
auto gen = value(123);
REQUIRE(gen.get() == 123);
REQUIRE_FALSE(gen.next());
}
SECTION( "fixed values" ) {
auto gen = values( { 3, 1, 4, 1 } );
CHECK( gen.size() == 4 );
CHECK( gen[0] == 3 );
CHECK( gen[1] == 1 );
CHECK( gen[2] == 4 );
CHECK( gen[3] == 1 );
SECTION("Preset values") {
auto gen = values({ 1, 3, 5 });
REQUIRE(gen.get() == 1);
REQUIRE(gen.next());
REQUIRE(gen.get() == 3);
REQUIRE(gen.next());
REQUIRE(gen.get() == 5);
REQUIRE_FALSE(gen.next());
}
SECTION( "combined" ) {
auto gen = makeGenerators( range( 1, 3 ), values( { 9, 7 } ) );
CHECK( gen.size() == 4 );
CHECK( gen[0] == 1 );
CHECK( gen[1] == 2 );
CHECK( gen[2] == 9 );
CHECK( gen[3] == 7 );
SECTION("Generator combinator") {
auto gen = makeGenerators(1, 5, values({ 2, 4 }), 0);
REQUIRE(gen.get() == 1);
REQUIRE(gen.next());
REQUIRE(gen.get() == 5);
REQUIRE(gen.next());
REQUIRE(gen.get() == 2);
REQUIRE(gen.next());
REQUIRE(gen.get() == 4);
REQUIRE(gen.next());
REQUIRE(gen.get() == 0);
REQUIRE_FALSE(gen.next());
}
SECTION( "values" ) {
auto gen = makeGenerators( 3, 1 );
CHECK( gen.size() == 2 );
CHECK( gen[0] == 3 );
CHECK( gen[1] == 1 );
}
SECTION( "values2" ) {
auto gen = makeGenerators( 3, 1 );
CHECK( gen.size() == 2 );
CHECK( gen[0] == 3 );
CHECK( gen[1] == 1 );
}
SECTION( "type erasure" ) {
auto gen = makeGenerators( range( 7, 10 ), 11 );
// Make type erased version
auto dynCopy = pf::make_unique<Generators<int>>( std::move( gen ) );
std::unique_ptr<GeneratorBase const> base = std::move( dynCopy );
// Only thing we can do is ask for the size
CHECK( base->size() == 4 );
// Restore typed version
auto typed = dynamic_cast<Generators<int> const*>( base.get() );
REQUIRE( typed );
CHECK( typed->size() == 4 );
CHECK( (*typed)[0] == 7 );
CHECK( (*typed)[3] == 11 );
}
}
TEST_CASE("Generators impl - random", "[approvals]") {
using namespace Catch::Generators;
SECTION( "random range" ) {
auto gen = random( 3, 9 );
CHECK( gen.size() == 6 );
for( size_t i = 0; i < 6; ++i ) {
CHECK( gen[i] >= 3 );
CHECK( gen[i] <= 8 );
if( i > 0 )
CHECK( gen[i] != gen[i-1] );
}
}
SECTION( "random selection" ) {
auto gen = random<int>( 10 );
CHECK( gen.size() == 10 );
for( size_t i = 0; i < 10; ++i ) {
if( i > 0 )
CHECK( gen[i] != gen[i-1] );
}
SECTION("Explicitly typed generator sequence") {
auto gen = makeGenerators(as<std::string>{}, "aa", "bb", "cc");
// This just checks that the type is std::string:
REQUIRE(gen.get().size() == 2);
// Iterate over the generator
REQUIRE(gen.get() == "aa");
REQUIRE(gen.next());
REQUIRE(gen.get() == "bb");
REQUIRE(gen.next());
REQUIRE(gen.get() == "cc");
REQUIRE_FALSE(gen.next());
}
}