Fix that decimal sleep does not works properly

.gitignore

@@ -3,6 +3,7 @@ vendor/
 
 # Build & binary
 dist/
+flog
 
 # Jetbrains IDE
 .idea/

flog.go

@@ -38,7 +38,7 @@ func Generate(option *Option) error {
 				splitCount++
 			}
 
-			delta += time.Duration(option.Sleep) * time.Second
+			delta += time.Duration(option.Sleep*float64(time.Second/time.Millisecond)) * time.Millisecond
 		}
 	} else {
 		// Generate the logs up to maximum size in byte
@@ -58,7 +58,7 @@ func Generate(option *Option) error {
 				splitCount++
 			}
 
-			delta += time.Duration(option.Sleep) * time.Second
+			delta += time.Duration(option.Sleep*float64(time.Second/time.Millisecond)) * time.Millisecond
 		}
 	}
 

option.go

@@ -3,8 +3,9 @@ package main
 import (
 	"errors"
 	"fmt"
-	"github.com/spf13/pflag"
 	"os"
+
+	"github.com/spf13/pflag"
 )
 
 const usage = `flog is a fake log generator for common log formats
@@ -16,7 +17,7 @@ Options:
   -o, --output string      Output filename. Path-like is allowed. (default "generated.log")
   -t, --type string        Log output type. ("stdout"|"log"|"gz") (default "stdout")
   -n, --number integer     Number of lines generate.
-  -b, --bytes integer      Size of logs to generate. (in bytes) 
+  -b, --bytes integer      Size of logs to generate. (in bytes)
                            "bytes" will be ignored when "number" is set.
   -s, --sleep numeric      Sleep interval time between lines. (in seconds)
   -p, --split-by integer   Split the logs by this value in lines or bytes.

option_test.go

@@ -1,8 +1,9 @@
 package main
 
 import (
-	"github.com/stretchr/testify/assert"
 	"testing"
+
+	"github.com/stretchr/testify/assert"
 )
 
 func TestParseFormat(t *testing.T) {
@@ -48,6 +49,10 @@ func TestParseSleep(t *testing.T) {
 	a.Equal(10.0, sleep, "sleep should be 10")
 	a.NoError(err, "there should be no error")
 
+	sleep, err = ParseSleep(5.5)
+	a.Equal(5.5, sleep, "sleep should be 5.5")
+	a.NoError(err, "there should be no error")
+
 	sleep, err = ParseSleep(-10)
 	a.Equal(0.0, sleep, "sleep should be 0 when negative is given")
 	a.Error(err, "there should be an error when negative is given")