tests: integration suite

integration/internal/harness/keys.go

@@ -0,0 +1,54 @@
+package harness
+
+import (
+	"crypto/ed25519"
+	"crypto/sha256"
+	"crypto/x509"
+	"encoding/pem"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/alicebob/miniredis/v2"
+)
+
+// StartMiniredis starts one isolated Redis-compatible in-memory server and
+// registers automatic cleanup.
+func StartMiniredis(t testing.TB) *miniredis.Miniredis {
+	t.Helper()
+
+	server, err := miniredis.Run()
+	if err != nil {
+		t.Fatalf("start miniredis: %v", err)
+	}
+
+	t.Cleanup(server.Close)
+	return server
+}
+
+// WriteResponseSignerPEM writes one deterministic PKCS#8 PEM-encoded Ed25519
+// private key for gateway response signing and returns the file path plus the
+// matching public key.
+func WriteResponseSignerPEM(t testing.TB, label string) (string, ed25519.PublicKey) {
+	t.Helper()
+
+	seed := sha256.Sum256([]byte("galaxy-integration-response-signer-" + label))
+	privateKey := ed25519.NewKeyFromSeed(seed[:])
+
+	encoded, err := x509.MarshalPKCS8PrivateKey(privateKey)
+	if err != nil {
+		t.Fatalf("marshal response signer private key: %v", err)
+	}
+
+	pemBytes := pem.EncodeToMemory(&pem.Block{
+		Type:  "PRIVATE KEY",
+		Bytes: encoded,
+	})
+
+	path := filepath.Join(t.TempDir(), "response-signer.pem")
+	if err := os.WriteFile(path, pemBytes, 0o600); err != nil {
+		t.Fatalf("write response signer private key: %v", err)
+	}
+
+	return path, privateKey.Public().(ed25519.PublicKey)
+}