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generator_test.go
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/
generator_test.go
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package delay
import (
"math"
"math/rand"
"testing"
"time"
)
const testSeed = 99
func TestGeneratorNextWaitTime(t *testing.T) {
initialValue := 1000 * time.Millisecond
deviation := 1000 * time.Millisecond
firstRandomNormal := rand.New(rand.NewSource(testSeed)).NormFloat64()
firstRandom := rand.New(rand.NewSource(testSeed)).Float64()
fixedGenerator := FixedGenerator()
variableNormalGenerator := VariableNormalGenerator(deviation, rand.New(rand.NewSource(testSeed)))
variableUniformGenerator := VariableUniformGenerator(deviation, rand.New(rand.NewSource(testSeed)))
if fixedGenerator.NextWaitTime(initialValue).Seconds() != 1 {
t.Fatal("Fixed generator output incorrect wait time")
}
if math.Abs(variableNormalGenerator.NextWaitTime(initialValue).Seconds()-(firstRandomNormal*deviation.Seconds()+initialValue.Seconds())) > 0.00001 {
t.Fatal("Normalized variable delay generator output incorrect wait time")
}
if math.Abs(variableUniformGenerator.NextWaitTime(initialValue).Seconds()-(firstRandom*deviation.Seconds()+initialValue.Seconds())) > 0.00001 {
t.Fatal("Uniform variable delay output incorrect wait time")
}
}