moby/integration-cli/docker_cli_version_test.go

package main

import (
	"os/exec"
	"strings"

	"github.com/go-check/check"
)

// ensure docker version works
func (s *DockerSuite) TestVersionEnsureSucceeds(c *check.C) {
	versionCmd := exec.Command(dockerBinary, "version")
	out, _, err := runCommandWithOutput(versionCmd)
	if err != nil {
		c.Fatalf("failed to execute docker version: %s, %v", out, err)
	}

	stringsToCheck := map[string]int{
		"Client:":       1,
		"Server:":       1,
		" Version:":     2,
		" API version:": 2,
		" Go version:":  2,
		" Git commit:":  2,
		" OS/Arch:":     2,
		" Built:":       2,
	}

	for k, v := range stringsToCheck {
		if strings.Count(out, k) != v {
			c.Errorf("%v expected %d instances found %d", k, v, strings.Count(out, k))
		}
	}
}