124 lines
2.6 KiB
Go
124 lines
2.6 KiB
Go
package storage
|
|
|
|
import (
|
|
"math/rand"
|
|
"testing"
|
|
|
|
"github.com/stretchr/testify/require"
|
|
)
|
|
|
|
func TestSampleRing(t *testing.T) {
|
|
cases := []struct {
|
|
input []int64
|
|
delta int64
|
|
size int
|
|
}{
|
|
{
|
|
input: []int64{1, 2, 3, 4, 5, 6, 7, 8, 9, 10},
|
|
delta: 2,
|
|
size: 1,
|
|
},
|
|
{
|
|
input: []int64{1, 2, 3, 4, 5, 6, 7, 8, 9, 10},
|
|
delta: 2,
|
|
size: 2,
|
|
},
|
|
{
|
|
input: []int64{1, 2, 3, 4, 5, 6, 7, 8, 9, 10},
|
|
delta: 7,
|
|
size: 3,
|
|
},
|
|
{
|
|
input: []int64{1, 2, 3, 4, 5, 16, 17, 18, 19, 20},
|
|
delta: 7,
|
|
size: 1,
|
|
},
|
|
}
|
|
for _, c := range cases {
|
|
r := newSampleRing(c.delta, c.size)
|
|
|
|
input := []sample{}
|
|
for _, t := range c.input {
|
|
input = append(input, sample{
|
|
t: t,
|
|
v: float64(rand.Intn(100)),
|
|
})
|
|
}
|
|
|
|
for i, s := range input {
|
|
r.add(s.t, s.v)
|
|
buffered := r.samples()
|
|
|
|
for _, sold := range input[:i] {
|
|
found := false
|
|
for _, bs := range buffered {
|
|
if bs.t == sold.t && bs.v == sold.v {
|
|
found = true
|
|
break
|
|
}
|
|
}
|
|
if sold.t >= s.t-c.delta && !found {
|
|
t.Fatalf("%d: expected sample %d to be in buffer but was not; buffer %v", i, sold.t, buffered)
|
|
}
|
|
if sold.t < s.t-c.delta && found {
|
|
t.Fatalf("%d: unexpected sample %d in buffer; buffer %v", i, sold.t, buffered)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestBufferedSeriesIterator(t *testing.T) {
|
|
var it *BufferedSeriesIterator
|
|
|
|
bufferEq := func(exp []sample) {
|
|
var b []sample
|
|
bit := it.Buffer()
|
|
for bit.Next() {
|
|
t, v := bit.Values()
|
|
b = append(b, sample{t: t, v: v})
|
|
}
|
|
require.Equal(t, exp, b, "buffer mismatch")
|
|
}
|
|
sampleEq := func(ets int64, ev float64) {
|
|
ts, v := it.Values()
|
|
require.Equal(t, ets, ts, "timestamp mismatch")
|
|
require.Equal(t, ev, v, "value mismatch")
|
|
}
|
|
|
|
it = NewBuffer(newListSeriesIterator([]sample{
|
|
{t: 1, v: 2},
|
|
{t: 2, v: 3},
|
|
{t: 3, v: 4},
|
|
{t: 4, v: 5},
|
|
{t: 5, v: 6},
|
|
{t: 99, v: 8},
|
|
{t: 100, v: 9},
|
|
{t: 101, v: 10},
|
|
}), 2)
|
|
|
|
require.True(t, it.Seek(-123), "seek failed")
|
|
sampleEq(1, 2)
|
|
bufferEq(nil)
|
|
|
|
require.True(t, it.Next(), "next failed")
|
|
sampleEq(2, 3)
|
|
bufferEq([]sample{{t: 1, v: 2}})
|
|
|
|
require.True(t, it.Next(), "next failed")
|
|
require.True(t, it.Next(), "next failed")
|
|
require.True(t, it.Next(), "next failed")
|
|
sampleEq(5, 6)
|
|
bufferEq([]sample{{t: 2, v: 3}, {t: 3, v: 4}, {t: 4, v: 5}})
|
|
|
|
require.True(t, it.Seek(5), "seek failed")
|
|
sampleEq(5, 6)
|
|
bufferEq([]sample{{t: 2, v: 3}, {t: 3, v: 4}, {t: 4, v: 5}})
|
|
|
|
require.True(t, it.Seek(101), "seek failed")
|
|
sampleEq(101, 10)
|
|
bufferEq([]sample{{t: 99, v: 8}, {t: 100, v: 9}})
|
|
|
|
require.False(t, it.Next(), "next succeeded unexpectedly")
|
|
}
|