mirror of
https://github.com/bblanchon/ArduinoJson.git
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97 lines
2.9 KiB
C++
97 lines
2.9 KiB
C++
// ArduinoJson - https://arduinojson.org
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// Copyright © 2014-2023, Benoit BLANCHON
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// MIT License
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#define ARDUINOJSON_USE_DOUBLE 1
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#define ARDUINOJSON_ENABLE_NAN 1
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#define ARDUINOJSON_ENABLE_INFINITY 1
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#include <ArduinoJson.hpp>
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#include <catch.hpp>
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using namespace ArduinoJson::detail;
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void checkDouble(const char* input, double expected) {
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CAPTURE(input);
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REQUIRE(parseNumber<double>(input) == Approx(expected));
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}
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void checkDoubleNaN(const char* input) {
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CAPTURE(input);
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double result = parseNumber<double>(input);
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REQUIRE(result != result);
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}
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void checkDoubleInf(const char* input, bool negative) {
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CAPTURE(input);
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double x = parseNumber<double>(input);
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if (negative)
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REQUIRE(x < 0);
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else
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REQUIRE(x > 0);
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REQUIRE(x == x); // not a NaN
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REQUIRE(x * 2 == x); // a property of infinity
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}
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TEST_CASE("parseNumber<double>()") {
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SECTION("Short_NoExponent") {
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checkDouble("3.14", 3.14);
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checkDouble("-3.14", -3.14);
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checkDouble("+3.14", +3.14);
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}
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SECTION("Short_NoDot") {
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checkDouble("1E+308", 1E+308);
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checkDouble("-1E+308", -1E+308);
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checkDouble("+1E-308", +1E-308);
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checkDouble("+1e+308", +1e+308);
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checkDouble("-1e-308", -1e-308);
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}
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SECTION("Max") {
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checkDouble(".017976931348623147e+310", 1.7976931348623147e+308);
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checkDouble(".17976931348623147e+309", 1.7976931348623147e+308);
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checkDouble("1.7976931348623147e+308", 1.7976931348623147e+308);
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checkDouble("17.976931348623147e+307", 1.7976931348623147e+308);
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checkDouble("179.76931348623147e+306", 1.7976931348623147e+308);
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}
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SECTION("Min") {
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checkDouble(".022250738585072014e-306", 2.2250738585072014e-308);
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checkDouble(".22250738585072014e-307", 2.2250738585072014e-308);
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checkDouble("2.2250738585072014e-308", 2.2250738585072014e-308);
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checkDouble("22.250738585072014e-309", 2.2250738585072014e-308);
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checkDouble("222.50738585072014e-310", 2.2250738585072014e-308);
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}
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SECTION("VeryLong") {
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checkDouble("0.00000000000000000000000000000001", 1e-32);
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checkDouble("100000000000000000000000000000000.0", 1e+32);
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checkDouble(
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"100000000000000000000000000000000.00000000000000000000000000000",
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1e+32);
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}
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SECTION("MantissaTooLongToFit") {
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checkDouble("0.179769313486231571111111111111", 0.17976931348623157);
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checkDouble("17976931348623157.11111111111111", 17976931348623157.0);
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checkDouble("1797693.134862315711111111111111", 1797693.1348623157);
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checkDouble("-0.179769313486231571111111111111", -0.17976931348623157);
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checkDouble("-17976931348623157.11111111111111", -17976931348623157.0);
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checkDouble("-1797693.134862315711111111111111", -1797693.1348623157);
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}
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SECTION("ExponentTooBig") {
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checkDoubleInf("1e309", false);
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checkDoubleInf("-1e309", true);
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checkDoubleInf("1e65535", false);
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checkDouble("1e-65535", 0.0);
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}
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SECTION("NaN") {
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checkDoubleNaN("NaN");
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checkDoubleNaN("nan");
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}
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}
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