ArduinoJson/test/JsonVariant_PrintTo_Tests.cpp

// Copyright Benoit Blanchon 2014
// MIT License
//
// Arduino JSON library
// https://github.com/bblanchon/ArduinoJson

#include <gtest/gtest.h>
#include <ArduinoJson.h>

class JsonVariant_PrintTo_Tests : public testing::Test {
 protected:
  JsonVariant variant;

  void outputMustBe(const char *expected) {
    char buffer[256] = "";
    size_t n = variant.printTo(buffer, sizeof(buffer));
    EXPECT_STREQ(expected, buffer);
    EXPECT_EQ(strlen(expected), n);
  }
};

TEST_F(JsonVariant_PrintTo_Tests, Empty) { outputMustBe(""); }

TEST_F(JsonVariant_PrintTo_Tests, Null) {
  variant = static_cast<char *>(0);
  outputMustBe("null");
}

TEST_F(JsonVariant_PrintTo_Tests, String) {
  variant = "hello";
  outputMustBe("\"hello\"");
}

TEST_F(JsonVariant_PrintTo_Tests, DoubleZero) {
  variant = 0.0;
  outputMustBe("0.0");
}

TEST_F(JsonVariant_PrintTo_Tests, DoubleDefaultDigits) {
  variant = 3.14159265358979323846;
  outputMustBe("3.14");
}

TEST_F(JsonVariant_PrintTo_Tests, DoubleFourDigits) {
  variant.set(3.14159265358979323846, 4);
  outputMustBe("3.1416");
}

TEST_F(JsonVariant_PrintTo_Tests, Integer) {
  variant = 42;
  outputMustBe("42");
}

TEST_F(JsonVariant_PrintTo_Tests, Long) {
  variant = 42L;
  outputMustBe("42");
}

TEST_F(JsonVariant_PrintTo_Tests, Char) {
  variant = '*';
  outputMustBe("42");
}

TEST_F(JsonVariant_PrintTo_Tests, True) {
  variant = true;
  outputMustBe("true");
}

TEST_F(JsonVariant_PrintTo_Tests, OneFalse) {
  variant = false;
  outputMustBe("false");
}