add test for keygen

Author: TheFox0x7

modules/ssh/ssh_test.go

@@ -0,0 +1,32 @@
+package ssh_test
+
+import (
+	"crypto/x509"
+	"encoding/pem"
+	"io"
+	"os"
+	"testing"
+
+	"code.gitea.io/gitea/modules/ssh"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestGenKeyPair(t *testing.T) {
+	path := t.TempDir() + "/gitea.rsa"
+	ssh.GenKeyPair(path)
+
+	file, err := os.Open(path)
+	require.NoError(t, err)
+
+	bytes, err := io.ReadAll(file)
+	require.NoError(t, err)
+
+	block, _ := pem.Decode(bytes)
+	require.NotNil(t, block)
+	assert.Equal(t, "RSA PRIVATE KEY", block.Type)
+
+	privateKey, err := x509.ParsePKCS1PrivateKey(block.Bytes)
+	require.NoError(t, err)
+	assert.NotNil(t, privateKey)
+}