Allow empty paths

Author: cmaglie

paths.go

@@ -49,10 +49,7 @@ type Path struct {
 // then nil is returned.
 func New(path ...string) *Path {
 	if len(path) == 0 {
-		return nil
-	}
-	if len(path) == 1 && path[0] == "" {
-		return nil
+		return New("")
 	}
 	res := &Path{path: path[0]}
 	if len(path) > 1 {

paths_test.go

@@ -44,10 +44,10 @@ func TestPathNew(t *testing.T) {
 	require.Equal(t, filepath.Join("path", "path"), test2.String())
 
 	test3 := New()
-	require.Nil(t, test3)
+	require.Equal(t, "", test3.String())
 
 	test4 := New("")
-	require.Nil(t, test4)
+	require.Equal(t, "", test4.String())
 }
 
 func TestPath(t *testing.T) {