Add e2e tests

Signed-off-by: Ulysses Souza <ulyssessouza@gmail.com>

local/e2e/compose/fixtures/restart-test/compose.yml

@@ -0,0 +1,4 @@
+services:
+  restart:
+    image: busybox
+    command: ash -c "if [[ -f /tmp/restart.lock ]] ; then sleep infinity; else touch /tmp/restart.lock; fi"

local/e2e/compose/restart_test.go

@@ -0,0 +1,65 @@
+/*
+   Copyright 2020 Docker Compose CLI 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 e2e
+
+import (
+	"fmt"
+	"strings"
+	"testing"
+	"time"
+
+	testify "github.com/stretchr/testify/assert"
+	"gotest.tools/v3/assert"
+
+	. "github.com/docker/compose-cli/utils/e2e"
+)
+
+func TestRestart(t *testing.T) {
+	c := NewParallelE2eCLI(t, binDir)
+	const projectName = "e2e-restart"
+
+	getServiceRegx := func(service string, status string) string {
+		// match output with random spaces like:
+		// e2e-start-stop_db_1      db                  running
+		return fmt.Sprintf("%s_%s_1\\s+%s\\s+%s", projectName, service, service, status)
+	}
+
+	t.Run("Up a project", func(t *testing.T) {
+		// This is just to ensure the containers do NOT exist
+		c.RunDockerOrExitError("compose", "--project-name", projectName, "down")
+
+		res := c.RunDockerOrExitError("compose", "-f", "./fixtures/restart-test/compose.yml", "--project-name", projectName, "up", "-d")
+		assert.Assert(t, strings.Contains(res.Combined(), "Container e2e-restart_restart_1  Started"), res.Combined())
+
+		// Give the time for it to exit
+		time.Sleep(time.Second)
+
+		res = c.RunDockerOrExitError("compose", "--project-name", projectName, "ps", "-a")
+		testify.Regexp(t, getServiceRegx("restart", "exited"), res.Stdout())
+
+		_ = c.RunDockerOrExitError("compose", "-f", "./fixtures/restart-test/compose.yml", "--project-name", projectName, "restart")
+
+		// Give the same time but it must NOT exit
+		time.Sleep(time.Second)
+
+		res = c.RunDockerOrExitError("compose", "--project-name", projectName, "ps")
+		testify.Regexp(t, getServiceRegx("restart", "running"), res.Stdout())
+
+		// Clean up
+		c.RunDockerOrExitError("compose", "--project-name", projectName, "down")
+	})
+}