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#include "gtest/gtest.h"
#include <sstream>
#include <string>
// include the implementation since ErrorStats is a standalone class
// this way we don't have to link against the style_tests and lammps libs
#include "error_stats.cpp"
#include "fmtlib_format.cpp"
#include "fmtlib_os.cpp"
// Windows may define this as a macro
#if defined(max)
#undef max
#endif
TEST(ErrorStats, test)
{
ErrorStats stats;
stats.add(0.5);
stats.add(0.1);
stats.add(2.0);
stats.add(0.3);
stats.add(0);
ASSERT_DOUBLE_EQ(stats.avg(), 0.58);
ASSERT_DOUBLE_EQ(stats.dev(), 0.73047929470998685);
ASSERT_DOUBLE_EQ(stats.max(), 2.0);
ASSERT_EQ(stats.idx(), 3);
std::stringstream out;
out << stats;
ASSERT_EQ(out.str(), "Average: 5.800e-01 StdDev: 7.305e-01 MaxErr: 2.000e+00 @ item: 3");
stats.reset();
ASSERT_EQ(stats.has_data(), false);
ASSERT_DOUBLE_EQ(stats.avg(), 0.0);
ASSERT_DOUBLE_EQ(stats.dev(), 0.0);
ASSERT_DOUBLE_EQ(stats.max(), 0.0);
ASSERT_EQ(stats.idx(), -1);
stats.add(1.0);
ASSERT_EQ(stats.has_data(), true);
ASSERT_DOUBLE_EQ(stats.avg(), 1.0);
ASSERT_DOUBLE_EQ(stats.dev(), 0.0);
ASSERT_DOUBLE_EQ(stats.max(), 1.0);
ASSERT_EQ(stats.idx(), 1);
}
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