postgres_exporter/postgres_exporter_test.go

88 lines
2.2 KiB
Go

// +build !integration
package main
import (
. "gopkg.in/check.v1"
"testing"
"github.com/blang/semver"
)
// Hook up gocheck into the "go test" runner.
func Test(t *testing.T) { TestingT(t) }
type FunctionalSuite struct {
e *Exporter
}
var _ = Suite(&FunctionalSuite{})
func (s *FunctionalSuite) SetUpSuite(c *C) {
}
func (s *FunctionalSuite) TestSemanticVersionColumnDiscard(c *C) {
testMetricMap := map[string]map[string]ColumnMapping{
"test_namespace": {
"metric_which_stays": {COUNTER, "This metric should not be eliminated", nil, nil},
"metric_which_discards": {COUNTER, "This metric should be forced to DISCARD", nil, nil},
},
}
{
// No metrics should be eliminated
resultMap := makeDescMap(semver.MustParse("0.0.1"), testMetricMap)
c.Check(
resultMap["test_namespace"].columnMappings["metric_which_stays"].discard,
Equals,
false,
)
c.Check(
resultMap["test_namespace"].columnMappings["metric_which_discards"].discard,
Equals,
false,
)
}
{
// Update the map so the discard metric should be eliminated
discardableMetric := testMetricMap["test_namespace"]["metric_which_discards"]
discardableMetric.supportedVersions = semver.MustParseRange(">0.0.1")
testMetricMap["test_namespace"]["metric_which_discards"] = discardableMetric
// Discard metric should be discarded
resultMap := makeDescMap(semver.MustParse("0.0.1"), testMetricMap)
c.Check(
resultMap["test_namespace"].columnMappings["metric_which_stays"].discard,
Equals,
false,
)
c.Check(
resultMap["test_namespace"].columnMappings["metric_which_discards"].discard,
Equals,
true,
)
}
{
// Update the map so the discard metric should be kept but has a version
discardableMetric := testMetricMap["test_namespace"]["metric_which_discards"]
discardableMetric.supportedVersions = semver.MustParseRange(">0.0.1")
testMetricMap["test_namespace"]["metric_which_discards"] = discardableMetric
// Discard metric should be discarded
resultMap := makeDescMap(semver.MustParse("0.0.2"), testMetricMap)
c.Check(
resultMap["test_namespace"].columnMappings["metric_which_stays"].discard,
Equals,
false,
)
c.Check(
resultMap["test_namespace"].columnMappings["metric_which_discards"].discard,
Equals,
false,
)
}
}