prometheus/storage/local/codec/codec_test.go

118 lines
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package codec
import (
"testing"
clientmodel "github.com/prometheus/client_golang/model"
)
func newCodableFingerprint(fp int64) *CodableFingerprint {
cfp := CodableFingerprint(fp)
return &cfp
}
func newCodableLabelName(ln string) *CodableLabelName {
cln := CodableLabelName(ln)
return &cln
}
func TestCodec(t *testing.T) {
scenarios := []struct {
in codable
out codable
equal func(in, out codable) bool
}{
{
in: CodableMetric{
"label_1": "value_2",
"label_2": "value_2",
"label_3": "value_3",
},
out: CodableMetric{},
equal: func(in, out codable) bool {
m1 := clientmodel.Metric(in.(CodableMetric))
m2 := clientmodel.Metric(out.(CodableMetric))
return m1.Equal(m2)
},
}, {
in: newCodableFingerprint(12345),
out: newCodableFingerprint(0),
equal: func(in, out codable) bool {
return *in.(*CodableFingerprint) == *out.(*CodableFingerprint)
},
}, {
in: &CodableFingerprints{1, 2, 56, 1234},
out: &CodableFingerprints{},
equal: func(in, out codable) bool {
fps1 := *in.(*CodableFingerprints)
fps2 := *out.(*CodableFingerprints)
if len(fps1) != len(fps2) {
return false
}
for i, _ := range fps1 {
if fps1[i] != fps2[i] {
return false
}
}
return true
},
}, {
in: &CodableLabelPair{
Name: "label_name",
Value: "label_value",
},
out: &CodableLabelPair{},
equal: func(in, out codable) bool {
lp1 := *in.(*CodableLabelPair)
lp2 := *out.(*CodableLabelPair)
return lp1 == lp2
},
}, {
in: newCodableLabelName("label_name"),
out: newCodableLabelName(""),
equal: func(in, out codable) bool {
ln1 := *in.(*CodableLabelName)
ln2 := *out.(*CodableLabelName)
return ln1 == ln2
},
}, {
in: &CodableLabelValues{"value_1", "value_2", "value_3"},
out: &CodableLabelValues{},
equal: func(in, out codable) bool {
lvs1 := *in.(*CodableLabelValues)
lvs2 := *out.(*CodableLabelValues)
if len(lvs1) != len(lvs2) {
return false
}
for i, _ := range lvs1 {
if lvs1[i] != lvs2[i] {
return false
}
}
return true
},
}, {
in: &CodableTimeRange{42, 2001},
out: &CodableTimeRange{},
equal: func(in, out codable) bool {
ln1 := *in.(*CodableTimeRange)
ln2 := *out.(*CodableTimeRange)
return ln1 == ln2
},
},
}
for i, s := range scenarios {
encoded, err := s.in.MarshalBinary()
if err != nil {
t.Fatal(err)
}
if err := s.out.UnmarshalBinary(encoded); err != nil {
t.Fatal(err)
}
if !s.equal(s.in, s.out) {
t.Errorf("%d. Got: %v; want %v; encoded bytes are: %v", i, s.out, s.in, encoded)
}
}
}