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Add test for external labels in label template 

Signed-off-by: Bjoern Rabenstein <bjoern@rabenste.in>
This commit is contained in:
Bjoern Rabenstein 2019-04-20 02:19:06 +02:00
parent 38d518c0fe
commit 76102d570c
1 changed files with 94 additions and 0 deletions
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94
rules/alerting_test.go
View File

@ -17,6 +17,7 @@ import (
"testing"
"time"
"github.com/go-kit/kit/log"
"github.com/prometheus/prometheus/pkg/labels"
"github.com/prometheus/prometheus/pkg/timestamp"
"github.com/prometheus/prometheus/promql"
@ -142,3 +143,96 @@ func TestAlertingRuleLabelsUpdate(t *testing.T) {
testutil.Equals(t, result, filteredRes)
}
}
func TestAlertingRuleExternalLabelsInTemplate(t *testing.T) {
suite, err := promql.NewTest(t, `
load 1m
http_requests{job="app-server", instance="0"} 75 85 70 70
`)
testutil.Ok(t, err)
defer suite.Close()
err = suite.Run()
testutil.Ok(t, err)
expr, err := promql.ParseExpr(`http_requests < 100`)
testutil.Ok(t, err)
ruleWithoutExternalLabels := NewAlertingRule(
"ExternalLabelDoesNotExist",
expr,
time.Minute,
labels.FromStrings("templated_label", "There are {{ len $externalLabels }} external Labels, of which foo is {{ $externalLabels.foo }}."),
nil,
nil,
true, log.NewNopLogger(),
)
ruleWithExternalLabels := NewAlertingRule(
"ExternalLabelExists",
expr,
time.Minute,
labels.FromStrings("templated_label", "There are {{ len $externalLabels }} external Labels, of which foo is {{ $externalLabels.foo }}."),
nil,
labels.FromStrings("foo", "bar", "dings", "bums"),
true, log.NewNopLogger(),
)
result := promql.Vector{
{
Metric: labels.FromStrings(
"__name__", "ALERTS",
"alertname", "ExternalLabelDoesNotExist",
"alertstate", "pending",
"instance", "0",
"job", "app-server",
"templated_label", "There are 0 external Labels, of which foo is .",
),
Point: promql.Point{V: 1},
},
{
Metric: labels.FromStrings(
"__name__", "ALERTS",
"alertname", "ExternalLabelExists",
"alertstate", "pending",
"instance", "0",
"job", "app-server",
"templated_label", "There are 2 external Labels, of which foo is bar.",
),
Point: promql.Point{V: 1},
},
}
evalTime := time.Unix(0, 0)
result[0].Point.T = timestamp.FromTime(evalTime)
result[1].Point.T = timestamp.FromTime(evalTime)
var filteredRes promql.Vector // After removing 'ALERTS_FOR_STATE' samples.
res, err := ruleWithoutExternalLabels.Eval(
suite.Context(), evalTime, EngineQueryFunc(suite.QueryEngine(), suite.Storage()), nil,
)
testutil.Ok(t, err)
for _, smpl := range res {
smplName := smpl.Metric.Get("__name__")
if smplName == "ALERTS" {
filteredRes = append(filteredRes, smpl)
} else {
// If not 'ALERTS', it has to be 'ALERTS_FOR_STATE'.
testutil.Equals(t, smplName, "ALERTS_FOR_STATE")
}
}
res, err = ruleWithExternalLabels.Eval(
suite.Context(), evalTime, EngineQueryFunc(suite.QueryEngine(), suite.Storage()), nil,
)
testutil.Ok(t, err)
for _, smpl := range res {
smplName := smpl.Metric.Get("__name__")
if smplName == "ALERTS" {
filteredRes = append(filteredRes, smpl)
} else {
// If not 'ALERTS', it has to be 'ALERTS_FOR_STATE'.
testutil.Equals(t, smplName, "ALERTS_FOR_STATE")
}
}
testutil.Equals(t, result, filteredRes)
}