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// Copyright 2019 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package procfs
import (
"strings"
"testing"
)
func TestPSIStats(t *testing.T) {
t.Run("fake", func(*testing.T) {
stats, err := getProcFixtures(t).PSIStatsForResource("fake")
if err == nil {
t.Fatal("fake resource does not have PSI statistics")
}
if stats.Some != nil || stats.Full != nil {
t.Error("a fake resource cannot have PSILine entries")
}
})
t.Run("cpu", func(t *testing.T) {
stats, err := getProcFixtures(t).PSIStatsForResource("cpu")
if err != nil {
t.Fatal(err)
}
if stats.Full != nil {
t.Fatal("cpu resource cannot have 'full' stats")
}
if stats.Some == nil {
t.Fatal("cpu resource should not have nil 'some' stats")
}
testCases := []struct {
name string
got float64
want float64
}{
{"Avg10", stats.Some.Avg10, 0.1},
{"Avg60", stats.Some.Avg60, 2.0},
{"Avg300", stats.Some.Avg300, 3.85},
{"Total", float64(stats.Some.Total), 15.0},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
if tc.got != tc.want {
t.Errorf("got: %f, want: %f", tc.got, tc.want)
}
})
}
})
res := []string{"memory", "io"}
for _, resource := range res {
t.Run(resource, func(t *testing.T) {
stats, err := getProcFixtures(t).PSIStatsForResource(resource)
if err != nil {
t.Fatal(err)
}
if stats.Full == nil {
t.Fatalf("%s resource must not have nil 'full' stats", resource)
}
if stats.Some == nil {
t.Fatalf("%s resource must not have nil 'some' stats", resource)
}
testCases := []struct {
name string
got float64
want float64
}{
{"some/Avg10", stats.Some.Avg10, 0.1},
{"some/Avg60", stats.Some.Avg60, 2.0},
{"some/Avg300", stats.Some.Avg300, 3.85},
{"some/Total", float64(stats.Some.Total), 15.0},
{"full/Avg10", stats.Full.Avg10, 0.2},
{"full/Avg60", stats.Full.Avg60, 3.0},
{"full/Avg300", stats.Full.Avg300, 4.95},
{"full/Total", float64(stats.Full.Total), 25.0},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
if tc.got != tc.want {
t.Errorf("got: %f, want: %f", tc.got, tc.want)
}
})
}
})
}
}
// TestParsePSIStats tests the edge cases that we won't run into when running TestPSIStats
func TestParsePSIStats(t *testing.T) {
t.Run("unknown measurement type", func(t *testing.T) {
raw := "nonesense haha test=fake"
_, err := parsePSIStats("fake", strings.NewReader(raw))
if err != nil {
t.Error("unknown measurement type must be ignored")
}
})
t.Run("malformed measurement", func(t *testing.T) {
t.Run("some", func(t *testing.T) {
raw := `some avg10=0.10 avg60=2.00 avg300=3.85 total=oops
full avg10=0.20 avg60=3.00 avg300=teddy total=25`
stats, err := parsePSIStats("fake", strings.NewReader(raw))
if err == nil {
t.Error("a malformed line must result in a parse error")
}
if stats.Some != nil || stats.Full != nil {
t.Error("a parse error must result in a nil PSILine")
}
})
t.Run("full", func(t *testing.T) {
raw := `some avg10=0.10 avg60=2.00 avg300=3.85 total=1
full avg10=0.20 avg60=3.00 avg300=test total=25`
stats, err := parsePSIStats("fake", strings.NewReader(raw))
t.Log(err)
t.Log(stats)
if err == nil {
t.Error("a malformed line must result in a parse error")
}
if stats.Some != nil || stats.Full != nil {
t.Error("a parse error must result in a nil PSILine")
}
})
})
}
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