Added custom implementation of strtod() (issue #453)

2025-10-31 16:14:11 +01:00 · 2017-03-19 15:23:06 +01:00
parent 13409c433a
commit c4567bac18
15 changed files with 593 additions and 83 deletions
--- a/test/Polyfills_IsFloat_Tests.cpp
+++ b/test/Polyfills_IsFloat_Tests.cpp
@@ -0,0 +1,81 @@
+// Copyright Benoit Blanchon 2014-2017
+// MIT License
+//
+// Arduino JSON library
+// https://github.com/bblanchon/ArduinoJson
+// If you like this project, please add a star!
+
+#include <gtest/gtest.h>
+#include <ArduinoJson/Polyfills/isFloat.hpp>
+
+using namespace ArduinoJson::Polyfills;
+
+struct Polyfills_IsFloat_Tests : testing::Test {
+  void check(bool expected, const char* input) {
+    bool actual = isFloat(input);
+    EXPECT_EQ(expected, actual) << input;
+  }
+};
+#define TEST_(X) TEST_F(Polyfills_IsFloat_Tests, X)
+
+TEST_(NoExponent) {
+  check(true, "3.14");
+  check(true, "-3.14");
+  check(true, "+3.14");
+}
+
+TEST_(IntegralPartMissing) {
+  check(true, ".14");
+  check(true, "-.14");
+  check(true, "+.14");
+}
+
+TEST_(FractionalPartMissing) {
+  check(true, "3.");
+  check(true, "-3.e14");
+  check(true, "+3.e-14");
+}
+
+TEST_(NoDot) {
+  check(true, "3e14");
+  check(true, "3e-14");
+  check(true, "3e+14");
+}
+
+TEST_(Integer) {
+  check(false, "14");
+  check(false, "-14");
+  check(false, "+14");
+}
+
+TEST_(ExponentMissing) {
+  check(false, "3.14e");
+  check(false, "3.14e-");
+  check(false, "3.14e+");
+}
+
+TEST_(JustASign) {
+  check(false, "-");
+  check(false, "+");
+}
+
+TEST_(Empty) {
+  check(false, "");
+}
+
+TEST_(NaN) {
+  check(true, "NaN");
+  check(false, "n");
+  check(false, "N");
+  check(false, "nan");
+  check(false, "-NaN");
+  check(false, "+NaN");
+}
+
+TEST_(Infinity) {
+  check(true, "Infinity");
+  check(true, "+Infinity");
+  check(true, "-Infinity");
+  check(false, "infinity");
+  check(false, "Inf");
+}
--- a/test/Polyfills_ParseFloat_Tests.cpp
+++ b/test/Polyfills_ParseFloat_Tests.cpp
@@ -0,0 +1,175 @@
+// Copyright Benoit Blanchon 2014-2017
+// MIT License
+//
+// Arduino JSON library
+// https://github.com/bblanchon/ArduinoJson
+// If you like this project, please add a star!
+
+#include <gtest/gtest.h>
+#include <ArduinoJson/Polyfills/parseFloat.hpp>
+
+using namespace ArduinoJson::Polyfills;
+
+struct Polyfills_ParseFloat_Float_Tests : testing::Test {
+  void check(const char* input, float expected) {
+    float actual = parseFloat<float>(input);
+    EXPECT_FLOAT_EQ(expected, actual) << input;
+  }
+
+  void checkNaN(const char* input) {
+    float result = parseFloat<float>(input);
+    EXPECT_TRUE(result != result) << input;
+  }
+
+  void checkInf(const char* input, bool negative) {
+    float x = parseFloat<float>(input);
+    if (negative)
+      EXPECT_TRUE(x < 0) << input;
+    else
+      EXPECT_TRUE(x > 0) << input;
+    EXPECT_TRUE(x == x && x * 2 == x) << input;
+  }
+};
+#define TEST_FLOAT(X) TEST_F(Polyfills_ParseFloat_Float_Tests, X)
+
+struct Polyfills_ParseFloat_Double_Tests : testing::Test {
+  void check(const char* input, double expected) {
+    double actual = parseFloat<double>(input);
+    EXPECT_DOUBLE_EQ(expected, actual) << input;
+  }
+
+  void checkNaN(const char* input) {
+    double result = parseFloat<double>(input);
+    EXPECT_TRUE(result != result) << input;
+  }
+
+  void checkInf(const char* input, bool negative) {
+    double x = parseFloat<double>(input);
+    if (negative)
+      EXPECT_TRUE(x < 0) << input;
+    else
+      EXPECT_TRUE(x > 0) << input;
+    EXPECT_TRUE(x == x && x * 2 == x) << input;
+  }
+};
+#define TEST_DOUBLE(X) TEST_F(Polyfills_ParseFloat_Double_Tests, X)
+
+TEST_DOUBLE(Short_NoExponent) {
+  check("3.14", 3.14);
+  check("-3.14", -3.14);
+  check("+3.14", +3.14);
+}
+
+TEST_FLOAT(Float_Short_NoExponent) {
+  check("3.14", 3.14f);
+  check("-3.14", -3.14f);
+  check("+3.14", +3.14f);
+}
+
+TEST_DOUBLE(Short_NoDot) {
+  check("1E+308", 1E+308);
+  check("-1E+308", -1E+308);
+  check("+1E-308", +1E-308);
+  check("+1e+308", +1e+308);
+  check("-1e-308", -1e-308);
+}
+
+TEST_FLOAT(Short_NoDot) {
+  check("1E+38", 1E+38f);
+  check("-1E+38", -1E+38f);
+  check("+1E-38", +1E-38f);
+  check("+1e+38", +1e+38f);
+  check("-1e-38", -1e-38f);
+}
+
+TEST_FLOAT(Max) {
+  check("340.2823e+36", 3.402823e+38f);
+  check("34.02823e+37", 3.402823e+38f);
+  check("3.402823e+38", 3.402823e+38f);
+  check("0.3402823e+39", 3.402823e+38f);
+  check("00.3402823e+40", 3.402823e+38f);
+  check("000.3402823e+41", 3.402823e+38f);
+}
+
+TEST_DOUBLE(Max) {
+  check(".017976931348623147e+310", 1.7976931348623147e+308);
+  check(".17976931348623147e+309", 1.7976931348623147e+308);
+  check("1.7976931348623147e+308", 1.7976931348623147e+308);
+  check("17.976931348623147e+307", 1.7976931348623147e+308);
+  check("179.76931348623147e+306", 1.7976931348623147e+308);
+}
+
+TEST_DOUBLE(Min) {
+  check(".022250738585072014e-306", 2.2250738585072014e-308);
+  check(".22250738585072014e-307", 2.2250738585072014e-308);
+  check("2.2250738585072014e-308", 2.2250738585072014e-308);
+  check("22.250738585072014e-309", 2.2250738585072014e-308);
+  check("222.50738585072014e-310", 2.2250738585072014e-308);
+}
+
+TEST_DOUBLE(VeryLong) {
+  check("0.00000000000000000000000000000001", 1e-32);
+  check("100000000000000000000000000000000.0", 1e+32);
+  check("100000000000000000000000000000000.00000000000000000000000000000",
+        1e+32);
+}
+
+TEST_FLOAT(VeryLong) {
+  check("0.00000000000000000000000000000001", 1e-32f);
+  check("100000000000000000000000000000000.0", 1e+32f);
+  check("100000000000000000000000000000000.00000000000000000000000000000",
+        1e+32f);
+}
+
+TEST_DOUBLE(MantissaTooLongToFit) {
+  check("0.179769313486231571111111111111", 0.17976931348623157);
+  check("17976931348623157.11111111111111", 17976931348623157.0);
+  check("1797693.134862315711111111111111", 1797693.1348623157);
+
+  check("-0.179769313486231571111111111111", -0.17976931348623157);
+  check("-17976931348623157.11111111111111", -17976931348623157.0);
+  check("-1797693.134862315711111111111111", -1797693.1348623157);
+}
+
+TEST_FLOAT(MantissaTooLongToFit) {
+  check("0.340282346638528861111111111111", 0.34028234663852886f);
+  check("34028234663852886.11111111111111", 34028234663852886.0f);
+  check("34028234.66385288611111111111111", 34028234.663852886f);
+
+  check("-0.340282346638528861111111111111", -0.34028234663852886f);
+  check("-34028234663852886.11111111111111", -34028234663852886.0f);
+  check("-34028234.66385288611111111111111", -34028234.663852886f);
+}
+
+TEST_DOUBLE(ExponentTooBig) {
+  checkInf("1e309", false);
+  checkInf("-1e309", true);
+  checkInf("1e65535", false);
+  check("1e-65535", 0.0);
+}
+
+TEST_FLOAT(ExponentTooBig) {
+  checkInf("1e39", false);
+  checkInf("-1e39", true);
+  checkInf("1e255", false);
+  check("1e-255", 0.0f);
+}
+
+TEST_DOUBLE(NaN) {
+  checkNaN("NaN");
+  checkNaN("nan");
+}
+
+TEST_FLOAT(NaN) {
+  checkNaN("NaN");
+  checkNaN("nan");
+}
+
+TEST_FLOAT(Infinity) {
+  checkInf("Infinity", false);
+  checkInf("+Infinity", false);
+  checkInf("-Infinity", true);
+  checkInf("inf", false);
+  checkInf("+inf", false);
+  checkInf("-inf", true);
+}