text: /*************************************************************************/
  /*  test_variant.h                                                       */
  /*************************************************************************/
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  /* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
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  #ifndef TEST_VARIANT_H
  #define TEST_VARIANT_H
  
  #include "core/variant/variant.h"
  #include "core/variant/variant_parser.h"
  
  #include "tests/test_macros.h"
  
  namespace TestVariant {
  
  TEST_CASE("[Variant] Writer and parser integer") {
  	int64_t a32 = 2147483648; // 2^31, so out of bounds for 32-bit signed int [-2^31,-2^31-1].
  	String a32_str;
  	VariantWriter::write_to_string(a32, a32_str);
  
  	CHECK_MESSAGE(a32_str != "-2147483648", "Should not wrap around");
  
  	int64_t b64 = 9223372036854775807; // 2^63-1, upper bound for signed 64-bit int.
  	String b64_str;
  	VariantWriter::write_to_string(b64, b64_str);
  
  	CHECK_MESSAGE(b64_str == "9223372036854775807", "Should not wrap around.");
  
  	VariantParser::StreamString ss;
  	String errs;
  	int line;
  	Variant b64_parsed;
  	int64_t b64_int_parsed;
  
  	ss.s = b64_str;
  	VariantParser::parse(&ss, b64_parsed, errs, line);
  	b64_int_parsed = b64_parsed;
  
  	CHECK_MESSAGE(b64_int_parsed == 9223372036854775807, "Should parse back.");
  
  	ss.s = "9223372036854775808"; // Overflowed by one.
  	VariantParser::parse(&ss, b64_parsed, errs, line);
  	b64_int_parsed = b64_parsed;
  
  	CHECK_MESSAGE(b64_int_parsed == 9223372036854775807, "The result should be clamped to max value.");
  
  	ss.s = "1e100"; // Googol! Scientific notation.
  	VariantParser::parse(&ss, b64_parsed, errs, line);
  	b64_int_parsed = b64_parsed;
  
  	CHECK_MESSAGE(b64_int_parsed == 9223372036854775807, "The result should be clamped to max value.");
  }
  
  TEST_CASE("[Variant] Writer and parser float") {
  	// Assuming real_t is double.
  	real_t a64 = 340282346638528859811704183484516925440.0; // std::numeric_limits<real_t>::max()
  	String a64_str;
  	VariantWriter::write_to_string(a64, a64_str);
  
  	CHECK_MESSAGE(a64_str == "3.40282e+38", "Writes in scientific notation.");
  	CHECK_MESSAGE(a64_str != "inf", "Should not overflow.");
  	CHECK_MESSAGE(a64_str != "nan", "The result should be defined.");
  
  	VariantParser::StreamString ss;
  	String errs;
  	int line;
  	Variant b64_parsed;
  	real_t b64_float_parsed;
  
  	ss.s = a64_str;
  	VariantParser::parse(&ss, b64_parsed, errs, line);
  	b64_float_parsed = b64_parsed;
  
  	CHECK_MESSAGE(b64_float_parsed == 340282001837565597733306976381245063168.0, "Should parse back.");
  	// Loses precision, but that's alright.
  
  	ss.s = "1.0e+100"; // Float version of Googol!
  	VariantParser::parse(&ss, b64_parsed, errs, line);
  	b64_float_parsed = b64_parsed;
  
  	CHECK_MESSAGE(b64_float_parsed == 340282001837565597733306976381245063168.0, "Should not overflow.");
  }
  
  } // namespace TestVariant
  
  #endif // TEST_VARIANT_H
  