feat: initial library code

util/randomid/randomid.go

@@ -0,0 +1,16 @@
+package randomid
+
+import (
+	"crypto/rand"
+	"encoding/hex"
+	"fmt"
+)
+
+func Generate() (string, error) {
+	b := make([]byte, 4)
+	_, err := rand.Read(b)
+	if err != nil {
+		return "", fmt.Errorf("failed to generate random string: %w", err)
+	}
+	return hex.EncodeToString(b), nil
+}

util/randomid/randomid_test.go

@@ -0,0 +1,18 @@
+package randomid
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestGenerateRandomID(t *testing.T) {
+	found1, err := Generate()
+	assert.NoError(t, err)
+	found2, err := Generate()
+	assert.NoError(t, err)
+
+	assert.Len(t, found1, 8)
+	assert.Len(t, found2, 8)
+	assert.NotEqual(t, found1, found2)
+}