github.com/ncdc/docker@v0.10.1-0.20160129113957-6c6729ef5b74/integration-cli/requirements.go (about)

     1  package main
     2  
     3  import (
     4  	"fmt"
     5  	"io/ioutil"
     6  	"net/http"
     7  	"os"
     8  	"os/exec"
     9  	"strings"
    10  	"time"
    11  
    12  	"github.com/go-check/check"
    13  )
    14  
    15  type testCondition func() bool
    16  
    17  type testRequirement struct {
    18  	Condition   testCondition
    19  	SkipMessage string
    20  }
    21  
    22  // List test requirements
    23  var (
    24  	DaemonIsWindows = testRequirement{
    25  		func() bool { return daemonPlatform == "windows" },
    26  		"Test requires a Windows daemon",
    27  	}
    28  	DaemonIsLinux = testRequirement{
    29  		func() bool { return daemonPlatform == "linux" },
    30  		"Test requires a Linux daemon",
    31  	}
    32  	NotArm = testRequirement{
    33  		func() bool { return os.Getenv("DOCKER_ENGINE_GOARCH") != "arm" },
    34  		"Test requires a daemon not running on ARM",
    35  	}
    36  	SameHostDaemon = testRequirement{
    37  		func() bool { return isLocalDaemon },
    38  		"Test requires docker daemon to run on the same machine as CLI",
    39  	}
    40  	UnixCli = testRequirement{
    41  		func() bool { return isUnixCli },
    42  		"Test requires posix utilities or functionality to run.",
    43  	}
    44  	ExecSupport = testRequirement{
    45  		func() bool { return supportsExec },
    46  		"Test requires 'docker exec' capabilities on the tested daemon.",
    47  	}
    48  	Network = testRequirement{
    49  		func() bool {
    50  			// Set a timeout on the GET at 15s
    51  			var timeout = time.Duration(15 * time.Second)
    52  			var url = "https://hub.docker.com"
    53  
    54  			client := http.Client{
    55  				Timeout: timeout,
    56  			}
    57  
    58  			resp, err := client.Get(url)
    59  			if err != nil && strings.Contains(err.Error(), "use of closed network connection") {
    60  				panic(fmt.Sprintf("Timeout for GET request on %s", url))
    61  			}
    62  			if resp != nil {
    63  				resp.Body.Close()
    64  			}
    65  			return err == nil
    66  		},
    67  		"Test requires network availability, environment variable set to none to run in a non-network enabled mode.",
    68  	}
    69  	Apparmor = testRequirement{
    70  		func() bool {
    71  			buf, err := ioutil.ReadFile("/sys/module/apparmor/parameters/enabled")
    72  			return err == nil && len(buf) > 1 && buf[0] == 'Y'
    73  		},
    74  		"Test requires apparmor is enabled.",
    75  	}
    76  	RegistryHosting = testRequirement{
    77  		func() bool {
    78  			// for now registry binary is built only if we're running inside
    79  			// container through `make test`. Figure that out by testing if
    80  			// registry binary is in PATH.
    81  			_, err := exec.LookPath(v2binary)
    82  			return err == nil
    83  		},
    84  		fmt.Sprintf("Test requires an environment that can host %s in the same host", v2binary),
    85  	}
    86  	NotaryHosting = testRequirement{
    87  		func() bool {
    88  			// for now notary binary is built only if we're running inside
    89  			// container through `make test`. Figure that out by testing if
    90  			// notary-server binary is in PATH.
    91  			_, err := exec.LookPath(notaryBinary)
    92  			return err == nil
    93  		},
    94  		fmt.Sprintf("Test requires an environment that can host %s in the same host", notaryBinary),
    95  	}
    96  	NotOverlay = testRequirement{
    97  		func() bool {
    98  			cmd := exec.Command("grep", "^overlay / overlay", "/proc/mounts")
    99  			if err := cmd.Run(); err != nil {
   100  				return true
   101  			}
   102  			return false
   103  		},
   104  		"Test requires underlying root filesystem not be backed by overlay.",
   105  	}
   106  	IPv6 = testRequirement{
   107  		func() bool {
   108  			cmd := exec.Command("test", "-f", "/proc/net/if_inet6")
   109  
   110  			if err := cmd.Run(); err != nil {
   111  				return true
   112  			}
   113  			return false
   114  		},
   115  		"Test requires support for IPv6",
   116  	}
   117  	NotGCCGO = testRequirement{
   118  		func() bool {
   119  			out, err := exec.Command("go", "version").Output()
   120  			if err == nil && strings.Contains(string(out), "gccgo") {
   121  				return false
   122  			}
   123  			return true
   124  		},
   125  		"Test requires native Golang compiler instead of GCCGO",
   126  	}
   127  	NotUserNamespace = testRequirement{
   128  		func() bool {
   129  			root := os.Getenv("DOCKER_REMAP_ROOT")
   130  			if root != "" {
   131  				return false
   132  			}
   133  			return true
   134  		},
   135  		"Test cannot be run when remapping root",
   136  	}
   137  )
   138  
   139  // testRequires checks if the environment satisfies the requirements
   140  // for the test to run or skips the tests.
   141  func testRequires(c *check.C, requirements ...testRequirement) {
   142  	for _, r := range requirements {
   143  		if !r.Condition() {
   144  			c.Skip(r.SkipMessage)
   145  		}
   146  	}
   147  }