telegraf/internal/internal_test.go

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package internal
import (
"bytes"
"compress/gzip"
"io/ioutil"
"os/exec"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
type SnakeTest struct {
input string
output string
}
var tests = []SnakeTest{
{"a", "a"},
{"snake", "snake"},
{"A", "a"},
{"ID", "id"},
{"MOTD", "motd"},
{"Snake", "snake"},
{"SnakeTest", "snake_test"},
{"APIResponse", "api_response"},
{"SnakeID", "snake_id"},
{"SnakeIDGoogle", "snake_id_google"},
{"LinuxMOTD", "linux_motd"},
{"OMGWTFBBQ", "omgwtfbbq"},
{"omg_wtf_bbq", "omg_wtf_bbq"},
}
func TestSnakeCase(t *testing.T) {
for _, test := range tests {
if SnakeCase(test.input) != test.output {
t.Errorf(`SnakeCase("%s"), wanted "%s", got \%s"`, test.input, test.output, SnakeCase(test.input))
}
}
}
var (
sleepbin, _ = exec.LookPath("sleep")
echobin, _ = exec.LookPath("echo")
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shell, _ = exec.LookPath("sh")
)
func TestRunTimeout(t *testing.T) {
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if testing.Short() {
t.Skip("Skipping test due to random failures.")
}
if sleepbin == "" {
t.Skip("'sleep' binary not available on OS, skipping.")
}
cmd := exec.Command(sleepbin, "10")
start := time.Now()
err := RunTimeout(cmd, time.Millisecond*20)
elapsed := time.Since(start)
assert.Equal(t, TimeoutErr, err)
// Verify that command gets killed in 20ms, with some breathing room
assert.True(t, elapsed < time.Millisecond*75)
}
func TestCombinedOutputTimeout(t *testing.T) {
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// TODO: Fix this test
t.Skip("Test failing too often, skip for now and revisit later.")
if sleepbin == "" {
t.Skip("'sleep' binary not available on OS, skipping.")
}
cmd := exec.Command(sleepbin, "10")
start := time.Now()
_, err := CombinedOutputTimeout(cmd, time.Millisecond*20)
elapsed := time.Since(start)
assert.Equal(t, TimeoutErr, err)
// Verify that command gets killed in 20ms, with some breathing room
assert.True(t, elapsed < time.Millisecond*75)
}
func TestCombinedOutput(t *testing.T) {
if echobin == "" {
t.Skip("'echo' binary not available on OS, skipping.")
}
cmd := exec.Command(echobin, "foo")
out, err := CombinedOutputTimeout(cmd, time.Second)
assert.NoError(t, err)
assert.Equal(t, "foo\n", string(out))
}
// test that CombinedOutputTimeout and exec.Cmd.CombinedOutput return
// the same output from a failed command.
func TestCombinedOutputError(t *testing.T) {
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if shell == "" {
t.Skip("'sh' binary not available on OS, skipping.")
}
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cmd := exec.Command(shell, "-c", "false")
expected, err := cmd.CombinedOutput()
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cmd2 := exec.Command(shell, "-c", "false")
actual, err := CombinedOutputTimeout(cmd2, time.Second)
assert.Error(t, err)
assert.Equal(t, expected, actual)
}
func TestRunError(t *testing.T) {
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if shell == "" {
t.Skip("'sh' binary not available on OS, skipping.")
}
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cmd := exec.Command(shell, "-c", "false")
err := RunTimeout(cmd, time.Second)
assert.Error(t, err)
}
func TestRandomSleep(t *testing.T) {
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// TODO: Fix this test
t.Skip("Test failing too often, skip for now and revisit later.")
// test that zero max returns immediately
s := time.Now()
RandomSleep(time.Duration(0), make(chan struct{}))
elapsed := time.Since(s)
assert.True(t, elapsed < time.Millisecond)
// test that max sleep is respected
s = time.Now()
RandomSleep(time.Millisecond*50, make(chan struct{}))
elapsed = time.Since(s)
assert.True(t, elapsed < time.Millisecond*100)
// test that shutdown is respected
s = time.Now()
shutdown := make(chan struct{})
go func() {
time.Sleep(time.Millisecond * 100)
close(shutdown)
}()
RandomSleep(time.Second, shutdown)
elapsed = time.Since(s)
assert.True(t, elapsed < time.Millisecond*150)
}
func TestDuration(t *testing.T) {
var d Duration
d.UnmarshalTOML([]byte(`"1s"`))
assert.Equal(t, time.Second, d.Duration)
d = Duration{}
d.UnmarshalTOML([]byte(`1s`))
assert.Equal(t, time.Second, d.Duration)
d = Duration{}
d.UnmarshalTOML([]byte(`'1s'`))
assert.Equal(t, time.Second, d.Duration)
d = Duration{}
d.UnmarshalTOML([]byte(`10`))
assert.Equal(t, 10*time.Second, d.Duration)
d = Duration{}
d.UnmarshalTOML([]byte(`1.5`))
assert.Equal(t, time.Second, d.Duration)
}
func TestSize(t *testing.T) {
var s Size
s.UnmarshalTOML([]byte(`"1B"`))
assert.Equal(t, int64(1), s.Size)
s = Size{}
s.UnmarshalTOML([]byte(`1`))
assert.Equal(t, int64(1), s.Size)
s = Size{}
s.UnmarshalTOML([]byte(`'1'`))
assert.Equal(t, int64(1), s.Size)
s = Size{}
s.UnmarshalTOML([]byte(`"1GB"`))
assert.Equal(t, int64(1000*1000*1000), s.Size)
s = Size{}
s.UnmarshalTOML([]byte(`"12GiB"`))
assert.Equal(t, int64(12*1024*1024*1024), s.Size)
}
func TestCompressWithGzip(t *testing.T) {
testData := "the quick brown fox jumps over the lazy dog"
inputBuffer := bytes.NewBuffer([]byte(testData))
outputBuffer, err := CompressWithGzip(inputBuffer)
assert.NoError(t, err)
gzipReader, err := gzip.NewReader(outputBuffer)
assert.NoError(t, err)
defer gzipReader.Close()
output, err := ioutil.ReadAll(gzipReader)
assert.NoError(t, err)
assert.Equal(t, testData, string(output))
}
func TestVersionAlreadySet(t *testing.T) {
err := SetVersion("foo")
assert.Nil(t, err)
err = SetVersion("bar")
assert.NotNil(t, err)
assert.IsType(t, VersionAlreadySetError, err)
assert.Equal(t, "foo", Version())
}
func TestAlignDuration(t *testing.T) {
tests := []struct {
name string
now time.Time
interval time.Duration
expected time.Duration
}{
{
name: "aligned",
now: time.Date(2018, 1, 1, 1, 1, 0, 0, time.UTC),
interval: 10 * time.Second,
expected: 0 * time.Second,
},
{
name: "standard interval",
now: time.Date(2018, 1, 1, 1, 1, 1, 0, time.UTC),
interval: 10 * time.Second,
expected: 9 * time.Second,
},
{
name: "odd interval",
now: time.Date(2018, 1, 1, 1, 1, 1, 0, time.UTC),
interval: 3 * time.Second,
expected: 2 * time.Second,
},
{
name: "sub second interval",
now: time.Date(2018, 1, 1, 1, 1, 0, 5e8, time.UTC),
interval: 1 * time.Second,
expected: 500 * time.Millisecond,
},
{
name: "non divisible not aligned on minutes",
now: time.Date(2018, 1, 1, 1, 0, 0, 0, time.UTC),
interval: 1*time.Second + 100*time.Millisecond,
expected: 400 * time.Millisecond,
},
{
name: "long interval",
now: time.Date(2018, 1, 1, 1, 1, 0, 0, time.UTC),
interval: 1 * time.Hour,
expected: 59 * time.Minute,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
actual := AlignDuration(tt.now, tt.interval)
require.Equal(t, tt.expected, actual)
})
}
}
func TestParseTimestamp(t *testing.T) {
time, err := ParseTimestamp("2019-02-20 21:50:34.029665", "2006-01-02 15:04:05.000000")
assert.Nil(t, err)
assert.EqualValues(t, int64(1550699434029665000), time.UnixNano())
time, err = ParseTimestamp("2019-02-20 21:50:34.029665-04:00", "2006-01-02 15:04:05.000000-07:00")
assert.Nil(t, err)
assert.EqualValues(t, int64(1550713834029665000), time.UnixNano())
time, err = ParseTimestamp("2019-02-20 21:50:34.029665", "2006-01-02 15:04:05.000000-06:00")
assert.NotNil(t, err)
}
func TestParseTimestampWithLocation(t *testing.T) {
time, err := ParseTimestampWithLocation("2019-02-20 21:50:34.029665", "2006-01-02 15:04:05.000000", "UTC")
assert.Nil(t, err)
assert.EqualValues(t, int64(1550699434029665000), time.UnixNano())
time, err = ParseTimestampWithLocation("2019-02-20 21:50:34.029665", "2006-01-02 15:04:05.000000", "America/New_York")
assert.Nil(t, err)
assert.EqualValues(t, int64(1550717434029665000), time.UnixNano())
//Provided location is ignored if an offset is successfully parsed
time, err = ParseTimestampWithLocation("2019-02-20 21:50:34.029665-07:00", "2006-01-02 15:04:05.000000-07:00", "America/New_York")
assert.Nil(t, err)
assert.EqualValues(t, int64(1550724634029665000), time.UnixNano())
time, err = ParseTimestampWithLocation("2019-02-20 21:50:34.029665", "2006-01-02 15:04:05.000000", "InvalidTimeZone")
assert.NotNil(t, err)
}