refactoring, added documentation

sign_test.go

@@ -0,0 +1,34 @@
+package roots
+
+import (
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestSignEvent(t *testing.T) {
+	eventID := testEvent.ID
+	expectedSig := testEvent.Sig
+	actualSig, err := SignEvent(eventID, testSK)
+
+	assert.NoError(t, err)
+	assert.Equal(t, expectedSig, actualSig)
+}
+
+func TestSignInvalidEventID(t *testing.T) {
+	badEventID := "thisisabadeventid"
+	expectedError := "event id must be 64 hex characters"
+
+	_, err := SignEvent(badEventID, testSK)
+
+	assert.ErrorContains(t, err, expectedError)
+}
+
+func TestSignInvalidPrivateKey(t *testing.T) {
+	eventID := testEvent.ID
+	badSK := "thisisabadsecretkey"
+	expectedError := "private key must be 64 lowercase hex characters"
+
+	_, err := SignEvent(eventID, badSK)
+
+	assert.ErrorContains(t, err, expectedError)
+}