// ArduinoJson - https://arduinojson.org // Copyright © 2014-2022, Benoit BLANCHON // MIT License #include <catch.hpp> #include <limits> #include <string> #define ARDUINOJSON_ENABLE_NAN 1 #define ARDUINOJSON_ENABLE_INFINITY 1 #include <ArduinoJson/Json/TextFormatter.hpp> #include <ArduinoJson/Serialization/Writer.hpp> using namespace ARDUINOJSON_NAMESPACE; template <typename TFloat> void check(TFloat input, const std::string& expected) { std::string output; Writer<std::string> sb(output); TextFormatter<Writer<std::string> > writer(sb); writer.writeFloat(input); REQUIRE(writer.bytesWritten() == output.size()); CHECK(expected == output); } TEST_CASE("TextFormatter::writeFloat(double)") { SECTION("Pi") { check<double>(3.14159265359, "3.141592654"); } SECTION("Signaling NaN") { double nan = std::numeric_limits<double>::signaling_NaN(); check<double>(nan, "NaN"); } SECTION("Quiet NaN") { double nan = std::numeric_limits<double>::quiet_NaN(); check<double>(nan, "NaN"); } SECTION("Infinity") { double inf = std::numeric_limits<double>::infinity(); check<double>(inf, "Infinity"); check<double>(-inf, "-Infinity"); } SECTION("Zero") { check<double>(0.0, "0"); check<double>(-0.0, "0"); } SECTION("Espilon") { check<double>(2.2250738585072014E-308, "2.225073859e-308"); check<double>(-2.2250738585072014E-308, "-2.225073859e-308"); } SECTION("Max double") { check<double>(1.7976931348623157E+308, "1.797693135e308"); check<double>(-1.7976931348623157E+308, "-1.797693135e308"); } SECTION("Big exponent") { // this test increases coverage of normalize() check<double>(1e255, "1e255"); check<double>(1e-255, "1e-255"); } SECTION("Exponentation when <= 1e-5") { check<double>(1e-4, "0.0001"); check<double>(1e-5, "1e-5"); check<double>(-1e-4, "-0.0001"); check<double>(-1e-5, "-1e-5"); } SECTION("Exponentation when >= 1e7") { check<double>(9999999.999, "9999999.999"); check<double>(10000000.0, "1e7"); check<double>(-9999999.999, "-9999999.999"); check<double>(-10000000.0, "-1e7"); } SECTION("Rounding when too many decimals") { check<double>(0.000099999999999, "0.0001"); check<double>(0.0000099999999999, "1e-5"); check<double>(0.9999999996, "1"); } SECTION("9 decimal places") { check<double>(0.100000001, "0.100000001"); check<double>(0.999999999, "0.999999999"); check<double>(9.000000001, "9.000000001"); check<double>(9.999999999, "9.999999999"); } SECTION("10 decimal places") { check<double>(0.1000000001, "0.1"); check<double>(0.9999999999, "1"); check<double>(9.0000000001, "9"); check<double>(9.9999999999, "10"); } } TEST_CASE("TextFormatter::writeFloat(float)") { SECTION("Pi") { check<float>(3.14159265359f, "3.141593"); } SECTION("999.9") { // issue #543 check<float>(999.9f, "999.9"); } SECTION("24.3") { // # issue #588 check<float>(24.3f, "24.3"); } }