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snes_test.go
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snes_test.go
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package opt
import (
"testing"
"time"
)
func TestNewSNES(t *testing.T) {
tt := []struct {
name string
dim uint
size uint
seed uint64
rate float64
adaptive bool
}{
{"small", 10, 10, 42, 0.1, false},
{"large", 100000, 20, 43, 0.001, true},
}
for _, tc := range tt {
t.Run(tc.name, func(t *testing.T) {
o := &Options{
Adaptive: tc.adaptive,
GenerationSize: tc.size,
LearningRate: tc.rate,
RandomSeed: tc.seed,
}
s := NewSNES(tc.dim, o)
if s.len != tc.dim {
t.Errorf("expected len %v, but got %v", tc.dim, s.len)
}
if s.size != tc.size {
t.Errorf("expected size %v, but got %v", tc.size, s.size)
}
if s.rate != tc.rate {
t.Errorf("expected rate %v, but got %v", tc.rate, s.rate)
}
if s.adaptive != tc.adaptive {
t.Errorf("expected adaptive %v, but got %v", tc.adaptive, s.adaptive)
}
})
}
}
func TestSNESSearch(t *testing.T) {
s := NewSNES(3, DefaultOptions)
point, seed := s.Search()
if seed == 0 {
t.Error("seed not set")
}
for i := range point {
if point[i] == 0 {
t.Errorf("point not set at position %v", i)
}
}
if s.searchCount != 1 {
t.Error("search count not incremented")
}
}
func TestSNESSearchBlock(t *testing.T) {
s := NewSNES(3, DefaultOptions)
for i := 0; i < 10; i++ {
_, _ = s.Search()
}
type searchResp struct {
point []float64
seed int64
}
result := make(chan searchResp, 1)
timeout := make(chan bool, 1)
go func() {
point, seed := s.Search()
result <- searchResp{
point: point,
seed: seed,
}
}()
go func() {
time.Sleep(200 * time.Millisecond)
timeout <- true
}()
select {
case r := <-result:
t.Errorf("s.Search() should have blocked indefinitely, but got %v, %v", r.point, r.seed)
case <-timeout:
}
}
func TestSNESShow(t *testing.T) {
o := DefaultOptions
o.GenerationSize = 2
s := NewSNES(3, o)
s.Show(20, 42)
if s.showCount != 1 {
t.Error("showCount did not increment")
}
if s.seeds[0] != 42 {
t.Errorf("expected seed %v at position %v, but got %v", 42, 0, s.seeds[0])
}
if s.scores[0] != 20 {
t.Errorf("expected score %v at position %v, but got %v", 20, 0, s.scores[0])
}
s.Show(13.5, 89)
if s.searchCount != 0 {
t.Error("searchCount did not reset")
}
if s.showCount != 0 {
t.Error("showCount did not reset")
}
for i := range s.loc {
if s.loc[i] == 0 {
t.Errorf("loc did not update at position %v", i)
}
}
}
func TestSNESmakeNoise(t *testing.T) {
var seed int64 = 404
s := NewSNES(10, DefaultOptions)
n1 := s.makeNoise(seed)
n2 := s.makeNoise(seed)
for i := range n1 {
if n1[i] == 0 {
t.Errorf("noise not set at position %v", i)
}
if n1[i] != n2[i] {
t.Errorf("noise mismatch at position %v: %v and %v", i, n1[i], n2[i])
}
}
}