public void Combine_calculations_cross_verification()
{
// Assign
TimeSpan[] samples1 =
{
TimeSpan.FromMilliseconds(310),
TimeSpan.FromMilliseconds(300),
TimeSpan.FromMilliseconds(350),
TimeSpan.FromMilliseconds(330),
};
TimeSpan[] samples2 =
{
TimeSpan.FromMilliseconds(315),
TimeSpan.FromMilliseconds(290),
TimeSpan.FromMilliseconds(325),
};
var emptyStats = new TimeStats();
var stats1 = CreateStats(samples1);
var stats2 = CreateStats(samples2);
var common = CreateStats(samples1.Concat(samples2).ToArray());
// Act
var combined = emptyStats + stats1 + stats2 + emptyStats;
// Assert
combined.ShouldBeEquivalentTo(common);
}
public void Combine(TimeStats that)
{
if (that.SamplesCount == 0)
{
return;
}
if (this.SamplesCount == 0)
{
this.Max = that.Max;
this.Min = that.Min;
this.Avg = that.Avg;
this.SamplesCount = that.SamplesCount;
}
else
{
var totalSamplesCount = this.SamplesCount + that.SamplesCount;
this.Max = TimeSpan.FromTicks(Math.Max(this.Max.Ticks, that.Max.Ticks));
this.Min = TimeSpan.FromTicks(Math.Min(this.Min.Ticks, that.Min.Ticks));
this.Avg = TimeSpan.FromTicks((long)
(this.Avg.Ticks * ((double)this.SamplesCount / totalSamplesCount)
+ that.Avg.Ticks * ((double)that.SamplesCount / totalSamplesCount))
);
this.SamplesCount = totalSamplesCount;
}
}
public void Combine_calculations_cross_verification()
{
// Assign
TimeSpan[] samples1 =
{
TimeSpan.FromMilliseconds(310),
TimeSpan.FromMilliseconds(300),
TimeSpan.FromMilliseconds(350),
TimeSpan.FromMilliseconds(330),
};
TimeSpan[] samples2 =
{
TimeSpan.FromMilliseconds(315),
TimeSpan.FromMilliseconds(290),
TimeSpan.FromMilliseconds(325),
};
var emptyStats = new TimeStats();
var stats1 = CreateStats(samples1);
var stats2 = CreateStats(samples2);
var common = CreateStats(samples1.Concat(samples2).ToArray());
// Act
var combined = emptyStats + stats1 + stats2 + emptyStats;
// Assert
combined.ShouldBeEquivalentTo(common);
}
public void Combine(TimeStats that)
{
if (that.SamplesCount == 0)
{
return;
}
if (this.SamplesCount == 0)
{
this.Max = that.Max;
this.Min = that.Min;
this.Avg = that.Avg;
this.SamplesCount = that.SamplesCount;
}
else
{
var totalSamplesCount = this.SamplesCount + that.SamplesCount;
this.Max = TimeSpan.FromTicks(Math.Max(this.Max.Ticks, that.Max.Ticks));
this.Min = TimeSpan.FromTicks(Math.Min(this.Min.Ticks, that.Min.Ticks));
this.Avg = TimeSpan.FromTicks((long)
(this.Avg.Ticks * ((double)this.SamplesCount / totalSamplesCount)
+ that.Avg.Ticks * ((double)that.SamplesCount / totalSamplesCount))
);
this.SamplesCount = totalSamplesCount;
}
}
public static TimeStats operator +(TimeStats stats1, TimeStats stats2)
{
var combinedStats = new TimeStats();
combinedStats.Combine(stats1);
combinedStats.Combine(stats2);
return combinedStats;
}
public static TimeStats operator+(TimeStats stats1, TimeStats stats2)
{
var combinedStats = new TimeStats();
combinedStats.Combine(stats1);
combinedStats.Combine(stats2);
return(combinedStats);
}
static TimeStats CreateStats(params TimeSpan[] samples)
{
var stats = new TimeStats();
foreach (var sample in samples)
{
stats.AddSample(sample);
}
return stats;
}
static TimeStats CreateStats(params TimeSpan[] samples)
{
var stats = new TimeStats();
foreach (var sample in samples)
{
stats.AddSample(sample);
}
return(stats);
}
