feat: mail service

mail/internal/ports/provider_test.go

@@ -0,0 +1,30 @@
+package ports
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestBuildSafeSummaryBuildsStableTokenOrder(t *testing.T) {
+	t.Parallel()
+
+	summary, err := BuildSafeSummary(SummaryFields{
+		Provider: "smtp",
+		Result:   "transient_failure",
+		Phase:    "data",
+		SMTPCode: "451",
+	})
+	require.NoError(t, err)
+	require.Equal(t, "provider=smtp result=transient_failure phase=data smtp_code=451", summary)
+}
+
+func TestResultValidateRejectsUnsafeSummary(t *testing.T) {
+	t.Parallel()
+
+	result := Result{
+		Classification: ClassificationAccepted,
+		Summary:        "provider=smtp result=accepted extra=value",
+	}
+	require.Error(t, result.Validate())
+}