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Simplified the implementation of parseNumber()

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Benoit Blanchon
2020-09-04 09:23:40 +02:00
parent 5ab53f42b2
commit 6d2ad4539f
11 changed files with 214 additions and 251 deletions
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extras/tests/Numbers/parseDouble.cpp Normal file
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// ArduinoJson - arduinojson.org
// Copyright Benoit Blanchon 2014-2020
// MIT License
#define ARDUINOJSON_USE_DOUBLE 1
#define ARDUINOJSON_ENABLE_NAN 1
#define ARDUINOJSON_ENABLE_INFINITY 1
#include <ArduinoJson/Numbers/parseNumber.hpp>
#include <ArduinoJson/Variant/VariantImpl.hpp>
#include <catch.hpp>
using namespace ARDUINOJSON_NAMESPACE;
void checkDouble(const char* input, double expected) {
CAPTURE(input);
REQUIRE(parseNumber<double>(input) == Approx(expected));
}
void checkDoubleNaN(const char* input) {
CAPTURE(input);
double result = parseNumber<double>(input);
REQUIRE(result != result);
}
void checkDoubleInf(const char* input, bool negative) {
CAPTURE(input);
double x = parseNumber<double>(input);
if (negative)
REQUIRE(x < 0);
else
REQUIRE(x > 0);
REQUIRE(x == x); // not a NaN
REQUIRE(x * 2 == x); // a property of infinity
}
TEST_CASE("parseNumber<double>()") {
SECTION("Short_NoExponent") {
checkDouble("3.14", 3.14);
checkDouble("-3.14", -3.14);
checkDouble("+3.14", +3.14);
}
SECTION("Short_NoDot") {
checkDouble("1E+308", 1E+308);
checkDouble("-1E+308", -1E+308);
checkDouble("+1E-308", +1E-308);
checkDouble("+1e+308", +1e+308);
checkDouble("-1e-308", -1e-308);
}
SECTION("Max") {
checkDouble(".017976931348623147e+310", 1.7976931348623147e+308);
checkDouble(".17976931348623147e+309", 1.7976931348623147e+308);
checkDouble("1.7976931348623147e+308", 1.7976931348623147e+308);
checkDouble("17.976931348623147e+307", 1.7976931348623147e+308);
checkDouble("179.76931348623147e+306", 1.7976931348623147e+308);
}
SECTION("Min") {
checkDouble(".022250738585072014e-306", 2.2250738585072014e-308);
checkDouble(".22250738585072014e-307", 2.2250738585072014e-308);
checkDouble("2.2250738585072014e-308", 2.2250738585072014e-308);
checkDouble("22.250738585072014e-309", 2.2250738585072014e-308);
checkDouble("222.50738585072014e-310", 2.2250738585072014e-308);
}
SECTION("VeryLong") {
checkDouble("0.00000000000000000000000000000001", 1e-32);
checkDouble("100000000000000000000000000000000.0", 1e+32);
checkDouble(
"100000000000000000000000000000000.00000000000000000000000000000",
1e+32);
}
SECTION("MantissaTooLongToFit") {
checkDouble("0.179769313486231571111111111111", 0.17976931348623157);
checkDouble("17976931348623157.11111111111111", 17976931348623157.0);
checkDouble("1797693.134862315711111111111111", 1797693.1348623157);
checkDouble("-0.179769313486231571111111111111", -0.17976931348623157);
checkDouble("-17976931348623157.11111111111111", -17976931348623157.0);
checkDouble("-1797693.134862315711111111111111", -1797693.1348623157);
}
SECTION("ExponentTooBig") {
checkDoubleInf("1e309", false);
checkDoubleInf("-1e309", true);
checkDoubleInf("1e65535", false);
checkDouble("1e-65535", 0.0);
}
SECTION("NaN") {
checkDoubleNaN("NaN");
checkDoubleNaN("nan");
}
}