diff --git a/arguments.go b/arguments.go
index d429a0c..92b72a9 100644
--- a/arguments.go
+++ b/arguments.go
@@ -41,8 +41,8 @@ type arguments struct {
 	verbose      bool
 }
 
-func getArguments() (arguments, error) {
-	args, err := docopt.Parse(fmt.Sprintf(usage, defaultConcurrency), nil, true, "liche", true)
+func getArguments(argv []string) (arguments, error) {
+	args, err := docopt.Parse(fmt.Sprintf(usage, defaultConcurrency), argv, true, "liche", true)
 
 	if err != nil {
 		return arguments{}, err
@@ -54,12 +54,12 @@ func getArguments() (arguments, error) {
 		return arguments{}, err
 	}
 
-	t := 0.0
-
 	if args["--document-root"] == nil {
 		args["--document-root"] = ""
 	}
 
+	t := 0.0
+
 	if args["--timeout"] != nil {
 		t, err = strconv.ParseFloat(args["--timeout"].(string), 64)
 
diff --git a/arguments_test.go b/arguments_test.go
new file mode 100644
index 0000000..a7cb642
--- /dev/null
+++ b/arguments_test.go
@@ -0,0 +1,65 @@
+package main
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestGetArguments(t *testing.T) {
+	for _, c := range []struct {
+		argv []string
+		args arguments
+	}{
+		{
+			argv: []string{"file"},
+			args: arguments{[]string{"file"}, "", defaultConcurrency, 0, false, false},
+		},
+		{
+			argv: []string{"-c", "42", "file"},
+			args: arguments{[]string{"file"}, "", 42, 0, false, false},
+		},
+		{
+			argv: []string{"--concurrency", "42", "file"},
+			args: arguments{[]string{"file"}, "", 42, 0, false, false},
+		},
+		{
+			argv: []string{"-d", "directory", "file"},
+			args: arguments{[]string{"file"}, "directory", defaultConcurrency, 0, false, false},
+		},
+		{
+			argv: []string{"--document-root", "directory", "file"},
+			args: arguments{[]string{"file"}, "directory", defaultConcurrency, 0, false, false},
+		},
+		{
+			argv: []string{"-r", "file"},
+			args: arguments{[]string{"file"}, "", defaultConcurrency, 0, true, false},
+		},
+		{
+			argv: []string{"--recursive", "file"},
+			args: arguments{[]string{"file"}, "", defaultConcurrency, 0, true, false},
+		},
+		{
+			argv: []string{"-t", "42", "file"},
+			args: arguments{[]string{"file"}, "", defaultConcurrency, 42 * time.Second, false, false},
+		},
+		{
+			argv: []string{"--timeout", "42", "file"},
+			args: arguments{[]string{"file"}, "", defaultConcurrency, 42 * time.Second, false, false},
+		},
+		{
+			argv: []string{"-v", "file"},
+			args: arguments{[]string{"file"}, "", defaultConcurrency, 0, false, true},
+		},
+		{
+			argv: []string{"--verbose", "file"},
+			args: arguments{[]string{"file"}, "", defaultConcurrency, 0, false, true},
+		},
+	} {
+		args, err := getArguments(c.argv)
+
+		assert.Equal(t, nil, err)
+		assert.Equal(t, args, c.args)
+	}
+}
diff --git a/main.go b/main.go
index 9a9c83a..e7f939b 100644
--- a/main.go
+++ b/main.go
@@ -3,7 +3,7 @@ package main
 import "os"
 
 func main() {
-	args, err := getArguments()
+	args, err := getArguments(nil)
 
 	if err != nil {
 		printToStderr(err.Error())