public void ManPageExampleParsing()
{
string sample = "cpu 10132153 290696 3084719 46828483 16683 0 25195 0 175628 0";
var stat = ProcStat.FromLine(sample);
Assert.Equal(10132153, stat.User);
Assert.Equal(25195, stat.Softirq);
}
public void ThrowOnInvalidData()
{
Assert.Throws <ArgumentNullException>(() => { ProcStat.FromLine(null); });
Assert.Throws <ArgumentException>(() => { ProcStat.FromLine(string.Empty); });
Assert.Throws <ArgumentException>(() => { ProcStat.FromLine(" "); });
Assert.Throws <ArgumentException>(() => { ProcStat.FromLine("cpu "); });
Assert.Throws <FormatException>(() => { ProcStat.FromLine("cpu invalid data"); });
}
public void ProcStatParsing()
{
string sample = "cpu 23294 0 8415 11690959 1078 0 923 0 0 0";
var stat = ProcStat.FromLine(sample);
Assert.Equal(23294, stat.User);
Assert.Equal(0, stat.Nice);
Assert.Equal(8415, stat.System);
Assert.Equal(11690959, stat.Idle);
Assert.Equal(1078, stat.Iowait);
Assert.Equal(0, stat.Irq);
Assert.Equal(923, stat.Softirq);
}
public void Average()
{
// real data extracted to validate the method
// get data : head -n 1 /proc/stat
// cpu stress on my 16 cores : stress -c 4
// compared with htop
string first = "cpu 41389 68 12438 19810438 1167 0 1230 0 0 0";
string second = "cpu 44991 68 12448 19821179 1168 0 1276 0 0 0";
var cpuUsage = ProcStat.FromLine(first).AverageCpuWith(ProcStat.FromLine(second));
Assert.Equal(26, cpuUsage);
}