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// Copyright 2018 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 (
"testing"
"github.com/google/go-cmp/cmp"
)
// Whether or not to run tests with inode fixtures.
const (
checkInode = true
noCheckInode = false
)
func TestNetUnix(t *testing.T) {
fs, err := NewFS(procTestFixtures)
if err != nil {
t.Fatalf("failed to open procfs: %v", err)
}
got, err := fs.NetUNIX()
if err != nil {
t.Fatalf("failed to get UNIX socket data: %v", err)
}
testNetUNIX(t, checkInode, got)
}
func TestNetUnixNoInode(t *testing.T) {
fs, err := NewFS(procTestFixtures)
if err != nil {
t.Fatalf("failed to open procfs: %v", err)
}
got, err := readNetUNIX(fs.proc.Path("net/unix_without_inode"))
if err != nil {
t.Fatalf("failed to read UNIX socket data: %v", err)
}
testNetUNIX(t, noCheckInode, got)
}
func testNetUNIX(t *testing.T, testInode bool, got *NetUNIX) {
t.Helper()
// First verify that the input data matches a prepopulated structure.
want := []*NetUNIXLine{
{
KernelPtr: "0000000000000000",
RefCount: 2,
Flags: 1 << 16,
Type: 1,
State: 1,
Inode: 3442596,
Path: "/var/run/postgresql/.s.PGSQL.5432",
},
{
KernelPtr: "0000000000000000",
RefCount: 10,
Flags: 1 << 16,
Type: 5,
State: 1,
Inode: 10061,
Path: "/run/udev/control",
},
{
KernelPtr: "0000000000000000",
RefCount: 7,
Flags: 0,
Type: 2,
State: 1,
Inode: 12392,
Path: "/dev/log",
},
{
KernelPtr: "0000000000000000",
RefCount: 3,
Flags: 0,
Type: 1,
State: 3,
Inode: 4787297,
Path: "/var/run/postgresql/.s.PGSQL.5432",
},
{
KernelPtr: "0000000000000000",
RefCount: 3,
Flags: 0,
Type: 1,
State: 3,
Inode: 5091797,
},
}
// Enable the fixtures to be used for multiple tests by clearing the inode
// field when appropriate.
if !testInode {
for i := 0; i < len(want); i++ {
want[i].Inode = 0
}
}
if diff := cmp.Diff(want, got.Rows); diff != "" {
t.Fatalf("unexpected /proc/net/unix data (-want +got):\n%s", diff)
}
// Now test the field enumerations and ensure they match up correctly
// with the constants used to generate readable strings.
wantFlags := []NetUNIXFlags{
netUnixFlagListen,
netUnixFlagListen,
netUnixFlagDefault,
netUnixFlagDefault,
netUnixFlagDefault,
}
wantType := []NetUNIXType{
netUnixTypeStream,
netUnixTypeSeqpacket,
netUnixTypeDgram,
netUnixTypeStream,
netUnixTypeStream,
}
wantState := []NetUNIXState{
netUnixStateUnconnected,
netUnixStateUnconnected,
netUnixStateUnconnected,
netUnixStateConnected,
netUnixStateConnected,
}
var (
gotFlags []NetUNIXFlags
gotType []NetUNIXType
gotState []NetUNIXState
)
for _, r := range got.Rows {
gotFlags = append(gotFlags, r.Flags)
gotType = append(gotType, r.Type)
gotState = append(gotState, r.State)
}
if diff := cmp.Diff(wantFlags, gotFlags); diff != "" {
t.Fatalf("unexpected /proc/net/unix flags (-want +got):\n%s", diff)
}
if diff := cmp.Diff(wantType, gotType); diff != "" {
t.Fatalf("unexpected /proc/net/unix types (-want +got):\n%s", diff)
}
if diff := cmp.Diff(wantState, gotState); diff != "" {
t.Fatalf("unexpected /proc/net/unix states (-want +got):\n%s", diff)
}
}
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