✨ Add Hash generator

generators_test.go

@@ -2,6 +2,7 @@ package nomino
 
 import (
 	"errors"
+	"fmt"
 	"testing"
 	"time"
 
@@ -120,3 +121,23 @@ func TestSlugRemovesOriginal(t *testing.T) {
 	assert.Equal(t, "hello-world", st)
 	assert.NoError(t, err)
 }
+
+func TestHashBadHash(t *testing.T) {
+	conf := NewConfig(WithOriginal("foobar"), WithGenerator(Hash(0)))
+	st, err := conf.generator(&conf)
+	assert.Equal(t, "", st)
+	assert.ErrorIs(t, err, ErrInvalidHashType)
+	assert.ErrorContains(t, err, "invalid hash type: HashType(0)")
+}
+
+func TestHashMissingOriginal(t *testing.T) {
+	conf := NewConfig(WithGenerator(Hash(MD5)))
+	st, err := conf.generator(&conf)
+	assert.Equal(t, "", st)
+	assert.ErrorIs(t, err, ErrMissingOriginal)
+}
+
+func TestHashTypeStringer(t *testing.T) {
+	s := fmt.Sprintf("%s", MD5)
+	assert.Equal(t, "MD5", s)
+}