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package ms
import (
"reflect"
"testing"
"github.com/network-quality/goresponsiveness/utilities"
)
func Test_TooFewInstantsSequentialIncreasesLessThanAlwaysFalse(test *testing.T) {
series := NewMathematicalSeries[float64](500)
series.AddElement(0.0)
if islt, _ := series.AllSequentialIncreasesLessThan(6.0); islt {
test.Fatalf("Too few instants should always yield false when asking if sequential increases are less than a value.")
}
}
func Test_SequentialIncreasesAlwaysLessThan(test *testing.T) {
series := NewMathematicalSeries[float64](40)
previous := float64(1.0)
for _ = range utilities.Iota(1, 80) {
previous *= 1.059
series.AddElement(float64(previous))
}
if islt, maxSeqIncrease := series.AllSequentialIncreasesLessThan(6.0); !islt {
test.Fatalf("Sequential increases are not always less than 6.0 (%f).", maxSeqIncrease)
}
}
func Test_SequentialIncreasesAlwaysLessThanWithWraparound(test *testing.T) {
series := NewMathematicalSeries[float64](20)
previous := float64(1.0)
for range utilities.Iota(1, 20) {
previous *= 1.15
series.AddElement(float64(previous))
}
// All those measurements should be ejected by the following
// loop!
for range utilities.Iota(1, 20) {
previous *= 1.10
series.AddElement(float64(previous))
}
if islt, maxSeqIncrease := series.AllSequentialIncreasesLessThan(11.0); !islt {
test.Fatalf("Sequential increases are not always less than 11.0 in wraparound situation (%f v 11.0).", maxSeqIncrease)
}
}
func Test_SequentialIncreasesAlwaysLessThanWithWraparoundInverse(test *testing.T) {
series := NewMathematicalSeries[float64](20)
previous := float64(1.0)
for range utilities.Iota(1, 20) {
previous *= 1.15
series.AddElement(float64(previous))
}
// *Not* all those measurements should be ejected by the following
// loop!
for range utilities.Iota(1, 15) {
previous *= 1.10
series.AddElement(float64(previous))
}
if islt, maxSeqIncrease := series.AllSequentialIncreasesLessThan(11.0); islt {
test.Fatalf("Sequential increases are (unexpectedly) always less than 11.0 in wraparound situation: %f v 11.0.", maxSeqIncrease)
}
}
func Test_StandardDeviationCalculation(test *testing.T) {
series := NewMathematicalSeries[float64](5)
// 5.7, 1.0, 8.6, 7.4, 2.2
series.AddElement(5.7)
series.AddElement(1.0)
series.AddElement(8.6)
series.AddElement(7.4)
series.AddElement(2.2)
if _, sd := series.StandardDeviation(); !utilities.ApproximatelyEqual(2.93, sd, 0.01) {
test.Fatalf("Standard deviation max calculation failed: %v.", sd)
} else {
test.Logf("Standard deviation calculation result: %v", sd)
}
}
func Test_RotatingValues(test *testing.T) {
series := NewMathematicalSeries[int](5)
series.AddElement(1)
series.AddElement(2)
series.AddElement(3)
series.AddElement(4)
series.AddElement(5)
series.AddElement(6)
series.AddElement(7)
if !reflect.DeepEqual([]int{6, 7, 3, 4, 5}, series.Values()) {
test.Fatalf("Adding values does not properly erase earlier values.")
}
}
func Test_Size(test *testing.T) {
series := NewMathematicalSeries[int](5)
series.AddElement(1)
series.AddElement(2)
series.AddElement(3)
series.AddElement(4)
series.AddElement(5)
series.AddElement(6)
series.AddElement(7)
if series.Size() != 5 {
test.Fatalf("Series size calculations failed.")
}
}
|
