1 files changed, 123 insertions, 0 deletions
diff --git a/cmd/cert_test.go b/cmd/cert_test.go
new file mode 100644
index 0000000000..4242d8915b
--- /dev/null
+++ b/cmd/cert_test.go
@@ -0,0 +1,123 @@
+// Copyright 2025 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package cmd
+
+import (
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestCertCommand(t *testing.T) {
+	cases := []struct {
+		name string
+		args []string
+	}{
+		{
+			name: "RSA cert generation",
+			args: []string{
+				"cert-test",
+				"--host", "localhost",
+				"--rsa-bits", "2048",
+				"--duration", "1h",
+				"--start-date", "Jan 1 00:00:00 2024",
+			},
+		},
+		{
+			name: "ECDSA cert generation",
+			args: []string{
+				"cert-test",
+				"--host", "localhost",
+				"--ecdsa-curve", "P256",
+				"--duration", "1h",
+				"--start-date", "Jan 1 00:00:00 2024",
+			},
+		},
+		{
+			name: "mixed host, certificate authority",
+			args: []string{
+				"cert-test",
+				"--host", "localhost,127.0.0.1",
+				"--duration", "1h",
+				"--start-date", "Jan 1 00:00:00 2024",
+			},
+		},
+	}
+
+	for _, c := range cases {
+		t.Run(c.name, func(t *testing.T) {
+			app := cmdCert()
+			tempDir := t.TempDir()
+
+			certFile := filepath.Join(tempDir, "cert.pem")
+			keyFile := filepath.Join(tempDir, "key.pem")
+
+			err := app.Run(t.Context(), append(c.args, "--out", certFile, "--keyout", keyFile))
+			require.NoError(t, err)
+
+			assert.FileExists(t, certFile)
+			assert.FileExists(t, keyFile)
+		})
+	}
+}
+
+func TestCertCommandFailures(t *testing.T) {
+	cases := []struct {
+		name   string
+		args   []string
+		errMsg string
+	}{
+		{
+			name: "Start Date Parsing failure",
+			args: []string{
+				"cert-test",
+				"--host", "localhost",
+				"--start-date", "invalid-date",
+			},
+			errMsg: "parsing time",
+		},
+		{
+			name: "Unknown curve",
+			args: []string{
+				"cert-test",
+				"--host", "localhost",
+				"--ecdsa-curve", "invalid-curve",
+			},
+			errMsg: "unrecognized elliptic curve",
+		},
+		{
+			name: "Key generation failure",
+			args: []string{
+				"cert-test",
+				"--host", "localhost",
+				"--rsa-bits", "invalid-bits",
+			},
+		},
+		{
+			name: "Missing parameters",
+			args: []string{
+				"cert-test",
+			},
+			errMsg: `"host" not set`,
+		},
+	}
+	for _, c := range cases {
+		t.Run(c.name, func(t *testing.T) {
+			app := cmdCert()
+			tempDir := t.TempDir()
+
+			certFile := filepath.Join(tempDir, "cert.pem")
+			keyFile := filepath.Join(tempDir, "key.pem")
+			err := app.Run(t.Context(), append(c.args, "--out", certFile, "--keyout", keyFile))
+			require.Error(t, err)
+			if c.errMsg != "" {
+				assert.ErrorContains(t, err, c.errMsg)
+			}
+			assert.NoFileExists(t, certFile)
+			assert.NoFileExists(t, keyFile)
+		})
+	}
+}