310-Gen-VariablesInGenerators.cpp File Reference

#include <catch2/catch.hpp>

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Functions
	TEST_CASE ("Generate random doubles across different ranges", "[generator][example][advanced]")

Function Documentation

TEST_CASE()

TEST_CASE	(	"Generate random doubles across different ranges"	,
		""	[generator][example][advanced] )

Definition at line 11 of file 310-Gen-VariablesInGenerators.cpp.

                                            {
    // Workaround for old libstdc++
    using record = std::tuple<double, double>;
    // Set up 3 ranges to generate numbers from
    auto r = GENERATE(table<double, double>({
        record{3, 4},
        record{-4, -3},
        record{10, 1000}
    }));
 
    // This will not compile (intentionally), because it accesses a variable
    // auto number = GENERATE(take(50, random(std::get<0>(r), std::get<1>(r))));
 
   // GENERATE_COPY copies all variables mentioned inside the expression
   // thus this will work.
    auto number = GENERATE_COPY(take(50, random(std::get<0>(r), std::get<1>(r))));
 
    REQUIRE(std::abs(number) > 0);
}