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// Copyright 2015 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 collector
import (
"os"
"strings"
"testing"
)
func Test_parseTCPStatsError(t *testing.T) {
tests := []struct {
name string
in string
}{
{
name: "too few fields",
in: "sl local_address\n 0: 00000000:0016",
},
{
name: "missing colon in tx-rx field",
in: "sl local_address rem_address st tx_queue rx_queue\n" +
" 1: 0F02000A:0016 0202000A:8B6B 01 0000000000000001",
},
{
name: "tx parsing issue",
in: "sl local_address rem_address st tx_queue rx_queue\n" +
" 1: 0F02000A:0016 0202000A:8B6B 01 0000000x:00000001",
},
{
name: "rx parsing issue",
in: "sl local_address rem_address st tx_queue rx_queue\n" +
" 1: 0F02000A:0016 0202000A:8B6B 01 00000000:0000000x",
},
{
name: "state parsing issue",
in: "sl local_address rem_address st tx_queue rx_queue\n" +
" 1: 0F02000A:0016 0202000A:8B6B 0H 00000000:00000001",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if _, err := parseTCPStats(strings.NewReader(tt.in)); err == nil {
t.Fatal("expected an error, but none occurred")
}
})
}
}
func TestTCPStat(t *testing.T) {
noFile, _ := os.Open("follow the white rabbit")
defer noFile.Close()
if _, err := parseTCPStats(noFile); err == nil {
t.Fatal("expected an error, but none occurred")
}
file, err := os.Open("fixtures/proc/net/tcpstat")
if err != nil {
t.Fatal(err)
}
defer file.Close()
tcpStats, err := parseTCPStats(file)
if err != nil {
t.Fatal(err)
}
if want, got := 1, int(tcpStats[tcpEstablished]); want != got {
t.Errorf("want tcpstat number of established state %d, got %d", want, got)
}
if want, got := 1, int(tcpStats[tcpListen]); want != got {
t.Errorf("want tcpstat number of listen state %d, got %d", want, got)
}
if want, got := 42, int(tcpStats[tcpTxQueuedBytes]); want != got {
t.Errorf("want tcpstat number of bytes in tx queue %d, got %d", want, got)
}
if want, got := 1, int(tcpStats[tcpRxQueuedBytes]); want != got {
t.Errorf("want tcpstat number of bytes in rx queue %d, got %d", want, got)
}
}
func Test_getTCPStats(t *testing.T) {
type args struct {
statsFile string
}
tests := []struct {
name string
args args
wantErr bool
}{
{
name: "file not found",
args: args{statsFile: "somewhere over the rainbow"},
wantErr: true,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
_, err := getTCPStats(tt.args.statsFile)
if (err != nil) != tt.wantErr {
t.Errorf("getTCPStats() error = %v, wantErr %v", err, tt.wantErr)
return
}
// other cases are covered by TestTCPStat()
})
}
}
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