package procstat import ( "fmt" "os" "testing" "time" "github.com/influxdata/telegraf/testutil" "github.com/shirou/gopsutil/cpu" "github.com/shirou/gopsutil/process" "github.com/stretchr/testify/assert" "github.com/stretchr/testify/require" ) type testPgrep struct { pids []PID err error } func pidFinder(pids []PID, err error) func() (PIDFinder, error) { return func() (PIDFinder, error) { return &testPgrep{ pids: pids, err: err, }, nil } } func (pg *testPgrep) PidFile(path string) ([]PID, error) { return pg.pids, pg.err } func (pg *testPgrep) Pattern(pattern string) ([]PID, error) { return pg.pids, pg.err } func (pg *testPgrep) Uid(user string) ([]PID, error) { return pg.pids, pg.err } func (pg *testPgrep) FullPattern(pattern string) ([]PID, error) { return pg.pids, pg.err } type testProc struct { pid PID tags map[string]string } func newTestProc(pid PID) (Process, error) { proc := &testProc{ tags: make(map[string]string), } return proc, nil } func (p *testProc) PID() PID { return p.pid } func (p *testProc) Tags() map[string]string { return p.tags } func (p *testProc) IOCounters() (*process.IOCountersStat, error) { return &process.IOCountersStat{}, nil } func (p *testProc) MemoryInfo() (*process.MemoryInfoStat, error) { return &process.MemoryInfoStat{}, nil } func (p *testProc) Name() (string, error) { return "test_proc", nil } func (p *testProc) NumCtxSwitches() (*process.NumCtxSwitchesStat, error) { return &process.NumCtxSwitchesStat{}, nil } func (p *testProc) NumFDs() (int32, error) { return 0, nil } func (p *testProc) NumThreads() (int32, error) { return 0, nil } func (p *testProc) Percent(interval time.Duration) (float64, error) { return 0, nil } func (p *testProc) Times() (*cpu.TimesStat, error) { return &cpu.TimesStat{}, nil } var pid PID = PID(42) var exe string = "foo" func TestGather_CreateProcessErrorOk(t *testing.T) { var acc testutil.Accumulator p := Procstat{ Exe: exe, createPIDFinder: pidFinder([]PID{pid}, nil), createProcess: func(PID) (Process, error) { return nil, fmt.Errorf("createProcess error") }, } require.NoError(t, p.Gather(&acc)) } func TestGather_CreatePIDFinderError(t *testing.T) { var acc testutil.Accumulator p := Procstat{ createPIDFinder: func() (PIDFinder, error) { return nil, fmt.Errorf("createPIDFinder error") }, createProcess: newTestProc, } require.Error(t, p.Gather(&acc)) } func TestGather_ProcessName(t *testing.T) { var acc testutil.Accumulator p := Procstat{ Exe: exe, ProcessName: "custom_name", createPIDFinder: pidFinder([]PID{pid}, nil), createProcess: newTestProc, } require.NoError(t, p.Gather(&acc)) assert.Equal(t, "custom_name", acc.TagValue("procstat", "process_name")) } func TestGather_NoProcessNameUsesReal(t *testing.T) { var acc testutil.Accumulator pid := PID(os.Getpid()) p := Procstat{ Exe: exe, createPIDFinder: pidFinder([]PID{pid}, nil), createProcess: newTestProc, } require.NoError(t, p.Gather(&acc)) assert.True(t, acc.HasTag("procstat", "process_name")) } func TestGather_NoPidTag(t *testing.T) { var acc testutil.Accumulator p := Procstat{ Exe: exe, createPIDFinder: pidFinder([]PID{pid}, nil), createProcess: newTestProc, } require.NoError(t, p.Gather(&acc)) assert.True(t, acc.HasInt32Field("procstat", "pid")) assert.False(t, acc.HasTag("procstat", "pid")) } func TestGather_PidTag(t *testing.T) { var acc testutil.Accumulator p := Procstat{ Exe: exe, PidTag: true, createPIDFinder: pidFinder([]PID{pid}, nil), createProcess: newTestProc, } require.NoError(t, p.Gather(&acc)) assert.Equal(t, "42", acc.TagValue("procstat", "pid")) assert.False(t, acc.HasInt32Field("procstat", "pid")) } func TestGather_Prefix(t *testing.T) { var acc testutil.Accumulator p := Procstat{ Exe: exe, Prefix: "custom_prefix", createPIDFinder: pidFinder([]PID{pid}, nil), createProcess: newTestProc, } require.NoError(t, p.Gather(&acc)) assert.True(t, acc.HasInt32Field("procstat", "custom_prefix_num_fds")) } func TestGather_Exe(t *testing.T) { var acc testutil.Accumulator p := Procstat{ Exe: exe, createPIDFinder: pidFinder([]PID{pid}, nil), createProcess: newTestProc, } require.NoError(t, p.Gather(&acc)) assert.Equal(t, exe, acc.TagValue("procstat", "exe")) } func TestGather_User(t *testing.T) { var acc testutil.Accumulator user := "ada" p := Procstat{ User: user, createPIDFinder: pidFinder([]PID{pid}, nil), createProcess: newTestProc, } require.NoError(t, p.Gather(&acc)) assert.Equal(t, user, acc.TagValue("procstat", "user")) } func TestGather_Pattern(t *testing.T) { var acc testutil.Accumulator pattern := "foo" p := Procstat{ Pattern: pattern, createPIDFinder: pidFinder([]PID{pid}, nil), createProcess: newTestProc, } require.NoError(t, p.Gather(&acc)) assert.Equal(t, pattern, acc.TagValue("procstat", "pattern")) } func TestGather_MissingPidMethod(t *testing.T) { var acc testutil.Accumulator p := Procstat{ createPIDFinder: pidFinder([]PID{pid}, nil), createProcess: newTestProc, } require.Error(t, p.Gather(&acc)) } func TestGather_PidFile(t *testing.T) { var acc testutil.Accumulator pidfile := "/path/to/pidfile" p := Procstat{ PidFile: pidfile, createPIDFinder: pidFinder([]PID{pid}, nil), createProcess: newTestProc, } require.NoError(t, p.Gather(&acc)) assert.Equal(t, pidfile, acc.TagValue("procstat", "pidfile")) } func TestGather_PercentFirstPass(t *testing.T) { var acc testutil.Accumulator pid := PID(os.Getpid()) p := Procstat{ Pattern: "foo", PidTag: true, createPIDFinder: pidFinder([]PID{pid}, nil), createProcess: NewProc, } require.NoError(t, p.Gather(&acc)) assert.True(t, acc.HasFloatField("procstat", "cpu_time_user")) assert.False(t, acc.HasFloatField("procstat", "cpu_usage")) } func TestGather_PercentSecondPass(t *testing.T) { var acc testutil.Accumulator pid := PID(os.Getpid()) p := Procstat{ Pattern: "foo", PidTag: true, createPIDFinder: pidFinder([]PID{pid}, nil), createProcess: NewProc, } require.NoError(t, p.Gather(&acc)) require.NoError(t, p.Gather(&acc)) assert.True(t, acc.HasFloatField("procstat", "cpu_time_user")) assert.True(t, acc.HasFloatField("procstat", "cpu_usage")) }