tests: Migrate completion tests to common framework

tests/common/completion_test.go

@@ -0,0 +1,78 @@
+// Copyright 2021 The etcd Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package common
+
+import (
+	"bytes"
+	"fmt"
+	"os"
+	"os/exec"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"go.etcd.io/etcd/tests/v3/framework/e2e"
+)
+
+//go:build e2e
+// +build e2e
+
+package common
+
+import (
+"bytes"
+"fmt"
+"os"
+"os/exec"
+"testing"
+
+"github.com/stretchr/testify/require"
+"go.etcd.io/etcd/tests/v3/framework/e2e"
+)
+
+func TestCompletion(t *testing.T) {
+	tcs := []struct {
+		name  string
+		bin   string
+		shell string
+	}{
+		{
+			name:  "ETCDCTL",
+			bin:   e2e.CtlBinPath,
+			shell: "bash",
+		},
+		{
+			name:  "ETCDUTL",
+			bin:   e2e.UtlBinPath,
+			shell: "bash",
+		},
+	}
+	for _, tc := range tcs {
+		t.Run(tc.name, func(t *testing.T) {
+			e2e.BeforeTest(t)
+
+			stdout := new(bytes.Buffer)
+			completionCmd := exec.Command(tc.bin, "completion", tc.shell)
+			completionCmd.Stdout = stdout
+			completionCmd.Stderr = os.Stderr
+			require.NoError(t, completionCmd.Run())
+
+			filename := fmt.Sprintf("etcdctl-%s.completion", tc.shell)
+			require.NoError(t, os.WriteFile(filename, stdout.Bytes(), 0644))
+
+			shellCmd := exec.Command(tc.shell, "-c", "source "+filename)
+			require.NoError(t, shellCmd.Run())
+		})
+	}
+}