func TestSummarize(t *testing.T) {
start := time.Date(2016, time.Month(1), 21, 0, 0, 0, 0, time.UTC)
end := start.Add(36 * time.Hour)
step := time.Hour
NaN := math.NaN()
ts1, err := ts.NewTimeSeriesOfTimeRange("ts1", start, end, step, 1)
checkErr(t, err)
if ts1 == nil {
t.Errorf("FAIL(ts1): can't be nil, if we want to continue with other tests")
return
}
ts1NaN, err := ts.NewTimeSeriesOfData("ts1NaN", start, step,
[]float64{
1, NaN, 1, NaN, 1, NaN, 1, NaN, 1, NaN, 1, NaN,
1, NaN, 1, NaN, 1, NaN, 1, NaN, 1, NaN, 1, NaN,
1, NaN, 1, NaN, 1, NaN, 1, NaN, 1, NaN, 1, NaN,
})
checkErr(t, err)
if ts1NaN == nil {
t.Errorf("FAIL(ts1NaN): can't be nil, if we want to continue with other tests")
return
}
tss := []struct {
Got *ts.TimeSeries
Exp *TestSeries
}{
{
Got: Summarize(ts1, 24*time.Hour),
Exp: &TestSeries{
Key: "Summarize(24h0m0s)(ts1)",
Start: start,
End: start.Add(2 * 24 * time.Hour),
Step: 24 * time.Hour,
Data: []float64{24, 12},
},
},
{
Got: Summarize(ts1NaN, 24*time.Hour),
Exp: &TestSeries{
Key: "Summarize(24h0m0s)(ts1NaN)",
Start: start,
End: start.Add(2 * 24 * time.Hour),
Step: 24 * time.Hour,
Data: []float64{12, 6},
},
},
}
for _, pair := range tss {
fmt.Printf("%s\n%s\n\n", pair.Got, pair.Exp)
checkTimeSeries(t, pair.Got, pair.Exp)
}
//t.Errorf("here")
}
func TestProperties(t *testing.T) {
start := time.Date(2016, time.Month(1), 21, 0, 0, 0, 0, time.UTC)
step := time.Hour
NaN := math.NaN()
ts1, err := ts.NewTimeSeriesOfData("ts1", start, step, []float64{1, 2, 3, 4, 5})
checkErr(t, err)
tsNaN, err := ts.NewTimeSeriesOfData("tsNaN", start, step, []float64{1, 2, NaN, 4, 5})
checkErr(t, err)
tests := []struct {
f func(*ts.TimeSeries, func(float64) bool) bool
ts *ts.TimeSeries
pred func(float64) bool
exp bool
}{
{
f: Any,
ts: ts1,
pred: EQ(5),
exp: true,
},
{
f: Any,
ts: ts1,
pred: GT(5),
exp: false,
},
{
f: None,
ts: ts1,
pred: GT(5),
exp: true,
},
{
f: None,
ts: ts1,
pred: EQ(5),
exp: false,
},
{
f: Any,
ts: tsNaN,
pred: EQNAN,
exp: true,
},
{
f: None,
ts: tsNaN,
pred: EQNAN,
exp: false,
},
{
f: Any,
ts: tsNaN,
pred: EQ(5),
exp: true,
},
{
f: Any,
ts: tsNaN,
pred: GT(5),
exp: false,
},
{
f: None,
ts: tsNaN,
pred: GT(5),
exp: true,
},
{
f: None,
ts: tsNaN,
pred: EQ(5),
exp: false,
},
{
f: None,
ts: nil,
pred: EQ(5),
exp: false,
},
}
for i, test := range tests {
got := test.f(test.ts, test.pred)
if got != test.exp {
fmt.Printf("FAIL(%d): got '%v' != '%v' exp\n", i, got, test.exp)
t.Fail()
}
}
}
func TestTransforms(t *testing.T) {
start := time.Date(2016, time.Month(1), 14, 10, 0, 0, 0, time.UTC)
end := start.Add(6 * time.Minute)
step := time.Minute
NaN := math.NaN()
ts1, err := ts.NewTimeSeriesOfTimeRange("ts1", start, end, step, 1)
checkErr(t, err)
if ts1 == nil {
t.Errorf("FAIL(ts1): can't be nil, if we want to continue with other tests")
return
}
ts1NaN, err := ts.NewTimeSeriesOfData("ts1NaN", start, step,
[]float64{1, NaN, NaN, 1, 1, NaN})
checkErr(t, err)
if ts1NaN == nil {
t.Errorf("FAIL(ts1NaN): can't be nil, if we want to continue with other tests")
return
}
tsRaise, err := ts.NewTimeSeriesOfData("tsRaise", start, step,
[]float64{NaN, 1, 1, 0, 1, NaN, 2, 2})
checkErr(t, err)
if tsRaise == nil {
t.Errorf("FAIL(tsRaise): can't be nil, if we want to continue with other tests")
return
}
tss := []struct {
Got *ts.TimeSeries
Exp *TestSeries
}{
{
Got: ts1.Transform(&CumulativeSum{}),
Exp: &TestSeries{
Key: "CumulativeSum(ts1)",
Start: start,
End: end,
Step: step,
Data: []float64{1, 2, 3, 4, 5, 6},
},
},
{
Got: ts1NaN.Transform(&CumulativeSum{}),
Exp: &TestSeries{
Key: "CumulativeSum(ts1NaN)",
Start: start,
End: end,
Step: step,
Data: []float64{1, 1, 1, 2, 3, 3},
},
},
{
Got: ts1.Transform(&DivideBy{2}),
Exp: &TestSeries{
Key: (&DivideBy{2}).Name() + "(ts1)",
Start: start,
End: end,
Step: step,
Data: []float64{0.5, 0.5, 0.5, 0.5, 0.5, 0.5},
},
},
{
Got: ts1NaN.Transform(&DivideBy{2}),
Exp: &TestSeries{
Key: (&DivideBy{2}).Name() + "(ts1NaN)",
Start: start,
End: end,
Step: step,
Data: []float64{0.5, NaN, NaN, 0.5, 0.5, NaN},
},
},
{
Got: ts1.Transform(&MultiplyBy{2}),
Exp: &TestSeries{
Key: (&MultiplyBy{2}).Name() + "(ts1)",
Start: start,
End: end,
Step: step,
Data: []float64{2, 2, 2, 2, 2, 2},
},
},
{
Got: ts1NaN.Transform(&MultiplyBy{2}),
Exp: &TestSeries{
Key: (&MultiplyBy{2}).Name() + "(ts1NaN)",
Start: start,
End: end,
Step: step,
Data: []float64{2, NaN, NaN, 2, 2, NaN},
},
},
{
Got: tsRaise.Transform(&MarkRaise{}),
Exp: &TestSeries{
Key: (&MarkRaise{}).Name() + "(tsRaise)",
Start: start,
End: start.Add(8 * step),
Step: step,
Data: []float64{NaN, 0, 0, 0, 1, NaN, 1, 0},
},
},
}
for _, pair := range tss {
fmt.Printf("%s\n%s\n\n", pair.Got, pair.Exp)
checkTimeSeries(t, pair.Got, pair.Exp)
}
//t.Errorf("here")
}
func (resp *Response) readLine(line []byte) (*ts.TimeSeries, error) {
var key string
var start, end time.Time
var step time.Duration
var data []float64
buf := bytes.NewBuffer(line)
if header, err := buf.ReadBytes('|'); err != nil {
return nil, err
} else {
header = header[:len(header)-1]
headers := bytes.Split(header, []byte(","))
if len(headers) < 4 {
resp.Error = errors.New("graphite data header size <= 4")
return nil, resp.Error
}
key = string(bytes.Join(headers[:len(headers)-3], []byte(",")))
startInt, err := strconv.ParseInt(string(headers[len(headers)-3]), 10, 64)
if err != nil {
return nil, errors.New("conv to int fail")
}
endInt, err := strconv.ParseInt(string(headers[len(headers)-2]), 10, 64)
if err != nil {
return nil, errors.New("conv to int fail")
}
step, err = time.ParseDuration(string(headers[len(headers)-1]) + "s")
if err != nil {
return nil, errors.New("step couldn't be determined")
}
start = time.Unix(startInt, 0).UTC()
end = time.Unix(endInt, 0).UTC()
points := end.Sub(start) / step
data = make([]float64, points)
}
var err, errP error
var point []byte
for i := 0; err == nil; i++ {
point, err = buf.ReadBytes(',')
point = point[:len(point)-1]
if bytes.Equal(point, []byte("None")) {
data[i] = math.NaN()
continue
}
data[i], errP = strconv.ParseFloat(string(point), 64)
if errP != nil {
resp.Error = errP
return nil, errP
}
}
if err != io.EOF {
resp.Error = err
return nil, resp.Error
}
return ts.NewTimeSeriesOfData(key, start, step, data)
}