influx-cli/clients/write/throttler_test.go
Sam Arnold 9747d05ae1
refactor: expose generated code and client business logic to share with Kapacitor (#103)
* refactor: take clients out of internal

* refactor: move stdio to pkg

* Move internal/api to api

* refactor: final changes for Kapacitor to access shared functionality

* chore: regenerate mocks

* fix: bad automated refactor

* chore: extra formatting not caught by make fmt
2021-05-25 10:05:01 -04:00

86 lines
1.9 KiB
Go

package write_test
import (
"bytes"
"context"
"strings"
"testing"
"github.com/influxdata/influx-cli/v2/clients/write"
"github.com/stretchr/testify/require"
)
func TestThrottlerPassthrough(t *testing.T) {
// Hard to test that rate-limiting actually works, so we just check
// that no data is lost.
in := "Hello world!"
bps, err := write.ToBytesPerSecond("1B/s")
require.NoError(t, err)
throttler := write.NewThrottler(bps)
r := throttler.Throttle(context.Background(), strings.NewReader(in))
out := bytes.Buffer{}
_, err = out.ReadFrom(r)
require.NoError(t, err)
require.Equal(t, in, out.String())
}
func TestToBytesPerSecond(t *testing.T) {
var tests = []struct {
in string
out float64
error string
}{
{
in: "5 MB / 5 min",
out: float64(5*1024*1024) / float64(5*60),
},
{
in: "17kBs",
out: float64(17 * 1024),
},
{
in: "1B/m",
out: float64(1) / float64(60),
},
{
in: "1B/2sec",
out: float64(1) / float64(2),
},
{
in: "",
out: 0,
},
{
in: "1B/munite",
error: `invalid rate limit "1B/munite": it does not match format COUNT(B|kB|MB)/TIME(s|sec|m|min) with / and TIME being optional`,
},
{
in: ".B/s",
error: `invalid rate limit ".B/s": '.' is not count of bytes:`,
},
{
in: "1B0s",
error: `invalid rate limit "1B0s": positive time expected but 0 supplied`,
},
{
in: "1MB/42949672950s",
error: `invalid rate limit "1MB/42949672950s": time is out of range`,
},
}
for _, test := range tests {
t.Run(test.in, func(t *testing.T) {
bytesPerSec, err := write.ToBytesPerSecond(test.in)
if len(test.error) == 0 {
require.Equal(t, test.out, float64(bytesPerSec))
require.Nil(t, err)
} else {
require.NotNil(t, err)
// contains is used, since the error messages contains root cause that may evolve with go versions
require.Contains(t, err.Error(), test.error)
}
})
}
}