✨ Add Random Generator

gen_rand_test.go

@@ -0,0 +1,42 @@
+package nomino
+
+import (
+	"errors"
+	"testing"
+
+	"github.com/google/uuid"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestUUID(t *testing.T) {
+	st, err := UUID()(nil)
+	assert.NoError(t, err)
+	_, parseErr := uuid.Parse(st)
+	assert.NoError(t, parseErr)
+}
+
+type badRead struct{}
+
+func (badRead) Read([]byte) (int, error) {
+	return 0, errors.New("sorry")
+}
+
+func TestUUIDFail(t *testing.T) {
+	uuid.SetRand(badRead{})
+	defer uuid.SetRand(nil)
+
+	_, err := UUID()(nil)
+	assert.Equal(t, errors.New("sorry"), err)
+}
+
+func TestRand(t *testing.T) {
+	st, err := Random()(nil)
+	assert.NoError(t, err)
+	assert.Len(t, st, 8)
+}
+
+func TestRandLen(t *testing.T) {
+	st, err := Random(RandomLength(32))(nil)
+	assert.NoError(t, err)
+	assert.Len(t, st, 32)
+}