gosax_test.go

package gosax

import (
	"testing"
	"math/rand"
)

func TestToLetterRep(t *testing.T) {
	arr := []float64{7, 1, 4, 4, 4, 4}
	self, _ := NewSax(6, 5, 1e-6)
	letters, _ := self.ToLetterRepresentation(arr)
	if letters != "eacccc" {
		panic("hi")
	}
}

func TestToLetterRepWindow(t *testing.T) {
	arr := []float64{}

	for i := 0; i < 1000; i++ {
		arr = append(arr, rand.Float64()*300)
	}
	t.Log("Array: %v", arr)

	for ws := 1; ws < 20; ws ++ {
		for i := 3; i < 20; i++ {
			self, err := NewSax(ws, i, 1e-6)
			if err != nil {
				panic(err)
			}
			//self.set_window_size(i)
			letters, _ := self.ToLetterRepresentation(arr)
			t.Logf("Letters [%v][%d]: %v", ws, i, letters)
		}
	}

}

func TestSlidingWindow(t *testing.T) {
	arr := []float64{1, 9, 4, 7, 3, 6, 1, 11, 4, 15, 23, 7, 3, 1, 11, 4, 15, 23, 7, 6, 10, 100}

	for ws := 1; ws < 20; ws ++ {
		for i := 3; i < 20; i++ {
			self, err := NewSax(ws, i, 1e-6)
			if err != nil {
				panic(err)
			}
			//self.set_window_size(i)
			letters, _, _ := self.SlidingWindow(arr, 4, 0.2)
			t.Logf("Letters [%v][%d]: %v", ws, i, letters)
		}
	}
}

func TestLongToLetterRep(t *testing.T) {
	long_arr := []float64{1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 6, 6, 6, 6, 10, 100}
	self, _ := NewSax(6, 5, 1e-6)
	letters, _ := self.ToLetterRepresentation(long_arr)
	t.Logf("%v == bbbbce", letters)
	if letters != "bbbbce" {
		panic("2")
	}
}

func BenchmarkLongToLetterRep(b *testing.B) {
	long_arr := []float64{1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 6, 6, 6, 6, 10, 100}
	self, _ := NewSax(6, 5, 1e-6)

	for i := 0; i < b.N; i++ {
		self.ToLetterRepresentation(long_arr)
	}
}

func BenchmarkSlidingWindow(b *testing.B) {
	long_arr := []float64{1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 6, 6, 6, 6, 10, 100}
	self, _ := NewSax(6, 5, 1e-6)

	for i := 0; i < b.N; i++ {
		self.SlidingWindow(long_arr, 4, 0.4)
	}
}

func TestCompareStrings(t *testing.T) {
	self, _ := NewSax(6, 5, 1e-6)
	base_string := "aaabbc"
	similar_string := "aabbbc"
	dissimilar_string := "ccddbc"
	similar_score, _ := self.CompareStrings([]byte(base_string), []byte(similar_string))
	dissimilar_score, _ := self.CompareStrings([]byte(base_string), []byte(dissimilar_string))
	t.Logf("Similarity score: %v", similar_score)
	t.Logf("DisSimilarity score: %v", dissimilar_score)
	if similar_score >= dissimilar_score {
		panic("3")
	}
}