func TestFloatEncoder_SimilarFloats(t *testing.T) {
s := tsm1.NewFloatEncoder()
want := []float64{
6.00065e+06,
6.000656e+06,
6.000657e+06,
6.000659e+06,
6.000661e+06,
}
for _, v := range want {
s.Push(v)
}
s.Finish()
b, err := s.Bytes()
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
var it tsm1.FloatDecoder
if err := it.SetBytes(b); err != nil {
t.Fatalf("unexpected error creating float decoder: %v", err)
}
for _, w := range want {
if !it.Next() {
t.Fatalf("Next()=false, want true")
}
vv := it.Values()
if w != vv {
t.Errorf("Values()=(%v), want (%v)\n", vv, w)
}
}
if it.Next() {
t.Fatalf("Next()=true, want false")
}
if err := it.Error(); err != nil {
t.Errorf("it.Error()=%v, want nil", err)
}
}
func TestFloatEncoder_Roundtrip(t *testing.T) {
s := tsm1.NewFloatEncoder()
for _, p := range TwoHoursData {
s.Push(p.v)
}
s.Finish()
b, err := s.Bytes()
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
var it tsm1.FloatDecoder
if err := it.SetBytes(b); err != nil {
t.Fatalf("unexpected error creating float decoder: %v", err)
}
for _, w := range TwoHoursData {
if !it.Next() {
t.Fatalf("Next()=false, want true")
}
vv := it.Values()
// t.Logf("it.Values()=(%+v, %+v)\n", time.Unix(int64(tt), 0), vv)
if w.v != vv {
t.Errorf("Values()=(%v), want (%v)\n", vv, w.v)
}
}
if it.Next() {
t.Fatalf("Next()=true, want false")
}
if err := it.Error(); err != nil {
t.Errorf("it.Error()=%v, want nil", err)
}
}
func TestFloatEncoder_Simple(t *testing.T) {
// Example from the paper
s := tsm1.NewFloatEncoder()
s.Push(12)
s.Push(12)
s.Push(24)
// extra tests
// floating point masking/shifting bug
s.Push(13)
s.Push(24)
// delta-of-delta sizes
s.Push(24)
s.Push(24)
s.Push(24)
s.Finish()
b, err := s.Bytes()
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
var it tsm1.FloatDecoder
if err := it.SetBytes(b); err != nil {
t.Fatalf("unexpected error creating float decoder: %v", err)
}
want := []float64{
12,
12,
24,
13,
24,
24,
24,
24,
}
for _, w := range want {
if !it.Next() {
t.Fatalf("Next()=false, want true")
}
vv := it.Values()
if w != vv {
t.Errorf("Values()=(%v), want (%v)\n", vv, w)
}
}
if it.Next() {
t.Fatalf("Next()=true, want false")
}
if err := it.Error(); err != nil {
t.Errorf("it.Error()=%v, want nil", err)
}
}