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#include "parse_double.h"
#include <library/cpp/testing/unittest/registar.h>
namespace NYql {
Y_UNIT_TEST_SUITE(TParseDouble) {
template <typename T, typename F>
void ParseAndCheck(TStringBuf buf, F f, T expected) {
T result = 0;
UNIT_ASSERT(f(buf, result));
UNIT_ASSERT_DOUBLES_EQUAL(expected, result, 1e-6);
}
Y_UNIT_TEST(ExactValues) {
ParseAndCheck(TStringBuf("nan"), TryFloatFromString, std::numeric_limits<float>::quiet_NaN());
ParseAndCheck(TStringBuf("nAn"), TryDoubleFromString, std::numeric_limits<double>::quiet_NaN());
ParseAndCheck(TStringBuf("+nan"), TryFloatFromString, std::numeric_limits<float>::quiet_NaN());
ParseAndCheck(TStringBuf("+NAN"), TryDoubleFromString, std::numeric_limits<double>::quiet_NaN());
ParseAndCheck(TStringBuf("-nan"), TryFloatFromString, std::numeric_limits<float>::quiet_NaN());
ParseAndCheck(TStringBuf("-NaN"), TryDoubleFromString, std::numeric_limits<double>::quiet_NaN());
ParseAndCheck(TStringBuf("inf"), TryFloatFromString, std::numeric_limits<float>::infinity());
ParseAndCheck(TStringBuf("iNf"), TryDoubleFromString, std::numeric_limits<double>::infinity());
ParseAndCheck(TStringBuf("+inf"), TryFloatFromString, std::numeric_limits<float>::infinity());
ParseAndCheck(TStringBuf("+INF"), TryDoubleFromString, std::numeric_limits<double>::infinity());
ParseAndCheck(TStringBuf("-inf"), TryFloatFromString, -std::numeric_limits<float>::infinity());
ParseAndCheck(TStringBuf("-InF"), TryDoubleFromString, -std::numeric_limits<double>::infinity());
ParseAndCheck<float>(TStringBuf("-12.3456"), TryFloatFromString, -12.3456);
ParseAndCheck(TStringBuf("-12.3456"), TryDoubleFromString, -12.3456);
ParseAndCheck<float>(TStringBuf("1.23e-2"), TryFloatFromString, 0.0123);
ParseAndCheck(TStringBuf("1.23e-2"), TryDoubleFromString, 0.0123);
UNIT_ASSERT_EQUAL(FloatFromString(TStringBuf("iNf")), std::numeric_limits<float>::infinity());
UNIT_ASSERT_EQUAL(DoubleFromString(TStringBuf("iNf")), std::numeric_limits<float>::infinity());
}
Y_UNIT_TEST(Errors) {
UNIT_ASSERT_EXCEPTION_CONTAINS(FloatFromString(TStringBuf("")), std::exception, "unable to parse float from ''");
UNIT_ASSERT_EXCEPTION_CONTAINS(DoubleFromString(TStringBuf("")), std::exception, "unable to parse double from ''");
UNIT_ASSERT_EXCEPTION_CONTAINS(FloatFromString(TStringBuf("info")), std::exception, "unable to parse float from 'info'");
UNIT_ASSERT_EXCEPTION_CONTAINS(DoubleFromString(TStringBuf("-nana")), std::exception, "unable to parse double from '-nana'");
UNIT_ASSERT_EXCEPTION_CONTAINS(FloatFromString(TStringBuf(nullptr)), std::exception, "unable to parse float from ''");
UNIT_ASSERT_EXCEPTION_CONTAINS(DoubleFromString(TStringBuf(nullptr)), std::exception, "unable to parse double from ''");
}
}
}
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