Mcucpp

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#include <iostream>
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#include <string>
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#include <tiny_ostream.h>
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#include <tiny_iomanip.h>
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#include <format_parser.h>
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#include <limits>
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#include <gtest/gtest.h>
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class MyWriter
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{
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	enum{BufSize = 10000};
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public:
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	MyWriter()
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	{
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		seekp(0);
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	}
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	void seekp(int pos)
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	{
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		this->pos = pos;
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		_buffer[0] = '\0';
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	}
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	void put(char c)
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	{
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		_buffer[pos++] = c;
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	}
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	char *c_str()
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	{
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		_buffer[pos]='\0';
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		return  &_buffer[0];
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	}
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private:
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	int pos;
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	char _buffer[BufSize];
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};
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using namespace Mcucpp;
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typedef basic_ostream<MyWriter > my_ostream;
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TEST(Format, Stream)
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{
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	my_ostream my_cout;
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	my_cout << "Hello, world!";
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	EXPECT_STREQ(my_cout.c_str(), "Hello, world!");
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	my_cout.seekp(0);
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	my_cout << (uint8_t)123;
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	EXPECT_STREQ(my_cout.c_str(), "123");
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	my_cout.seekp(0);
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	my_cout << (uint16_t)1234;
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	EXPECT_STREQ(my_cout.c_str(), "1234");
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	my_cout.seekp(0);
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	my_cout << (uint32_t)12345678;
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	EXPECT_STREQ(my_cout.c_str(), "12345678");
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	my_cout.seekp(0);
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	my_cout << (int16_t)-1234;
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	EXPECT_STREQ(my_cout.c_str(), "-1234");
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	my_cout.seekp(0);
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	my_cout << (int32_t)-12345678;
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	EXPECT_STREQ(my_cout.c_str(), "-12345678");
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	my_cout.seekp(0);
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	my_cout << hex << 0x12345678;
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	EXPECT_STREQ(my_cout.c_str(), "12345678");
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	my_cout.seekp(0);
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	my_cout << hex << showbase << 0x12345678;
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	EXPECT_STREQ(my_cout.c_str(), "0x12345678");
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	my_cout.seekp(0);
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	my_cout << setw(16) << hex << showbase;
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	my_cout << left << 0x12345678;
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	EXPECT_STREQ(my_cout.c_str(), "0x12345678      ");
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	my_cout.seekp(0);
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	my_cout << setw(16) << right << 0x12345678;
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	EXPECT_STREQ(my_cout.c_str(), "      0x12345678");
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	my_cout.seekp(0);
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	my_cout.fill('0');
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	my_cout << setw(16) << internal << 0x12345678;
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	EXPECT_STREQ(my_cout.c_str(), "0x00000012345678");
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	my_cout.seekp(0);
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	my_cout << setw(0);
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	my_cout << true;
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	EXPECT_STREQ(my_cout.c_str(), "1");
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	my_cout.seekp(0);
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	my_cout << false;
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	EXPECT_STREQ(my_cout.c_str(), "0");
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	my_cout.seekp(0);
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	my_cout << boolalpha;
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	my_cout << true;
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	EXPECT_STREQ(my_cout.c_str(), "true");
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	my_cout.seekp(0);
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	my_cout << false;
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	EXPECT_STREQ(my_cout.c_str(), "false");
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	my_cout.seekp(0);
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}
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TEST(Format, String)
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{
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	my_ostream my_cout;
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	my_cout % Format("Hello, %!") % "world";
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	EXPECT_STREQ(my_cout.c_str(), "Hello, world!");
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	my_cout.seekp(0);
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	my_cout % Format("Foo = %") % 1000;
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	EXPECT_STREQ(my_cout.c_str(), "Foo = 1000");
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	my_cout.seekp(0);
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	my_cout % Format("Foo = %|#0x10|%%") % 0x1234;
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	EXPECT_STREQ(my_cout.c_str(), "Foo = 0x00001234%");
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	my_cout.seekp(0);
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}
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TEST(Format, FloatDefault)
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{
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	my_ostream my_cout;
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	my_cout.precision(5);
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	my_cout << 0.0f;
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	EXPECT_STREQ("0", my_cout.c_str());
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	my_cout.seekp(0);
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	my_cout << 123.f;
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	EXPECT_STREQ("123", my_cout.c_str());
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	my_cout.seekp(0);
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	my_cout << 12.34f;
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	EXPECT_STREQ("12.34", my_cout.c_str());
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	my_cout.seekp(0);
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	my_cout << 12345.67f;
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	EXPECT_STREQ("12346", my_cout.c_str());
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	my_cout.seekp(0);
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	my_cout << 1234567890.123f;
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	EXPECT_STREQ("1.2346e+9", my_cout.c_str());
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	my_cout.seekp(0);
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	my_cout << 1.234567890e-5f;
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	EXPECT_STREQ("1.2346e-5", my_cout.c_str());
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	my_cout.seekp(0);
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	my_cout << -12.34f;
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	EXPECT_STREQ("-12.34", my_cout.c_str());
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	my_cout.seekp(0);
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	my_cout << -12345.67f;
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	EXPECT_STREQ("-12346", my_cout.c_str());
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	my_cout.seekp(0);
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	my_cout << -1234567890.123f;
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	EXPECT_STREQ("-1.2346e+9", my_cout.c_str());
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	my_cout.seekp(0);
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	my_cout << -1.234567890e-5f;
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	EXPECT_STREQ("-1.2346e-5", my_cout.c_str());
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	my_cout.seekp(0);
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}
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TEST(Format, FloatRound)
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{
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	my_ostream my_cout;
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	my_cout.precision(5);
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	my_cout << 99999.99f;
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	EXPECT_STREQ("1e+5", my_cout.c_str());
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	my_cout.seekp(0);
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	my_cout << 99999.0f;
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	EXPECT_STREQ("99999", my_cout.c_str());
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	my_cout.seekp(0);
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	my_cout << 9999.99f;
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	EXPECT_STREQ("10000", my_cout.c_str());
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	my_cout.seekp(0);
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	my_cout << 9999.001f;
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	EXPECT_STREQ("9999", my_cout.c_str());
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	my_cout.seekp(0);
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}
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TEST(Format, FloatNanAndInf)
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{
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	my_ostream my_cout;
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	my_cout.precision(5);
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	my_cout << std::numeric_limits<float>::infinity();
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	EXPECT_STREQ("inf", my_cout.c_str());
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	my_cout.seekp(0);
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	my_cout << -std::numeric_limits<float>::infinity();
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	EXPECT_STREQ("-inf", my_cout.c_str());
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	my_cout.seekp(0);
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	my_cout << std::numeric_limits<float>::quiet_NaN();
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	EXPECT_STREQ("nan", my_cout.c_str());
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	my_cout.seekp(0);
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	my_cout << std::numeric_limits<float>::signaling_NaN();
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	EXPECT_STREQ("nan", my_cout.c_str());
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	my_cout.seekp(0);
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}