moby/integration-cli/docker_cli_info_test.go

package main

import (
	"fmt"
	"os/exec"
	"strings"
	"testing"
)

// ensure docker info succeeds
func TestInfoEnsureSucceeds(t *testing.T) {
	versionCmd := exec.Command(dockerBinary, "info")
	out, exitCode, err := runCommandWithOutput(versionCmd)
	errorOut(err, t, fmt.Sprintf("encountered error while running docker info: %v", err))

	if err != nil || exitCode != 0 {
		t.Fatal("failed to execute docker info")
	}

	stringsToCheck := []string{"Containers:", "Execution Driver:", "Kernel Version:"}

	for _, linePrefix := range stringsToCheck {
		if !strings.Contains(out, linePrefix) {
			t.Errorf("couldn't find string %v in output", linePrefix)
		}
	}

	logDone("info - verify that it works")
}