add unit tests for extended connection

Signed-off-by: NikitaSkrynnik <nikita.skrynnik@xored.com>

extendtimeout/connection_test.go

@@ -0,0 +1,68 @@
+// Copyright (c) 2024 Cisco and/or its affiliates.
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+// 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 extendtimeout_test
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+	"go.fd.io/govpp/api"
+
+	"github.com/networkservicemesh/vpphelper/extendtimeout"
+)
+
+type testConn struct {
+	api.Connection
+	invoke func(ctx context.Context)
+}
+
+func (c *testConn) Invoke(ctx context.Context, req, reply api.Message) error {
+	c.invoke(ctx)
+	return nil
+}
+
+func TestSmallTimeout(t *testing.T) {
+	testConn := &testConn{invoke: func(ctx context.Context) {
+		deadline, ok := ctx.Deadline()
+		require.True(t, ok)
+		timeout := time.Until(deadline)
+		require.Greater(t, timeout, time.Second)
+	}}
+
+	smallCtx, cancel := context.WithTimeout(context.Background(), time.Millisecond*10)
+	defer cancel()
+
+	err := extendtimeout.NewConnection(testConn, 2*time.Second).Invoke(smallCtx, nil, nil)
+	require.NoError(t, err)
+}
+
+func TestBigTimeout(t *testing.T) {
+	testConn := &testConn{invoke: func(ctx context.Context) {
+		deadline, ok := ctx.Deadline()
+		require.True(t, ok)
+		timeout := time.Until(deadline)
+		require.Greater(t, timeout, 7*time.Second)
+	}}
+
+	smallCtx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	err := extendtimeout.NewConnection(testConn, 2*time.Second).Invoke(smallCtx, nil, nil)
+	require.NoError(t, err)
+}