package main import ( "fmt" "io/ioutil" "net/http" "os" "os/exec" "strings" "time" "github.com/go-check/check" ) type testCondition func() bool type testRequirement struct { Condition testCondition SkipMessage string } // List test requirements var ( DaemonIsWindows = testRequirement{ func() bool { return daemonPlatform == "windows" }, "Test requires a Windows daemon", } DaemonIsLinux = testRequirement{ func() bool { return daemonPlatform == "linux" }, "Test requires a Linux daemon", } NotArm = testRequirement{ func() bool { return os.Getenv("DOCKER_ENGINE_GOARCH") != "arm" }, "Test requires a daemon not running on ARM", } NotPpc64le = testRequirement{ func() bool { return os.Getenv("DOCKER_ENGINE_GOARCH") != "ppc64le" }, "Test requires a daemon not running on ppc64le", } SameHostDaemon = testRequirement{ func() bool { return isLocalDaemon }, "Test requires docker daemon to run on the same machine as CLI", } UnixCli = testRequirement{ func() bool { return isUnixCli }, "Test requires posix utilities or functionality to run.", } ExecSupport = testRequirement{ func() bool { return supportsExec }, "Test requires 'docker exec' capabilities on the tested daemon.", } Network = testRequirement{ func() bool { // Set a timeout on the GET at 15s var timeout = time.Duration(15 * time.Second) var url = "https://hub.docker.com" client := http.Client{ Timeout: timeout, } resp, err := client.Get(url) if err != nil && strings.Contains(err.Error(), "use of closed network connection") { panic(fmt.Sprintf("Timeout for GET request on %s", url)) } if resp != nil { resp.Body.Close() } return err == nil }, "Test requires network availability, environment variable set to none to run in a non-network enabled mode.", } Apparmor = testRequirement{ func() bool { buf, err := ioutil.ReadFile("/sys/module/apparmor/parameters/enabled") return err == nil && len(buf) > 1 && buf[0] == 'Y' }, "Test requires apparmor is enabled.", } RegistryHosting = testRequirement{ func() bool { // for now registry binary is built only if we're running inside // container through `make test`. Figure that out by testing if // registry binary is in PATH. _, err := exec.LookPath(v2binary) return err == nil }, fmt.Sprintf("Test requires an environment that can host %s in the same host", v2binary), } NotaryHosting = testRequirement{ func() bool { // for now notary binary is built only if we're running inside // container through `make test`. Figure that out by testing if // notary-server binary is in PATH. _, err := exec.LookPath(notaryBinary) return err == nil }, fmt.Sprintf("Test requires an environment that can host %s in the same host", notaryBinary), } NotaryServerHosting = testRequirement{ func() bool { // for now notary-server binary is built only if we're running inside // container through `make test`. Figure that out by testing if // notary-server binary is in PATH. _, err := exec.LookPath(notaryServerBinary) return err == nil }, fmt.Sprintf("Test requires an environment that can host %s in the same host", notaryServerBinary), } NotOverlay = testRequirement{ func() bool { cmd := exec.Command("grep", "^overlay / overlay", "/proc/mounts") if err := cmd.Run(); err != nil { return true } return false }, "Test requires underlying root filesystem not be backed by overlay.", } Devicemapper = testRequirement{ func() bool { cmd := exec.Command("grep", "^devicemapper / devicemapper", "/proc/mounts") if err := cmd.Run(); err != nil { return false } return true }, "Test requires underlying root filesystem to be backed by devicemapper.", } IPv6 = testRequirement{ func() bool { cmd := exec.Command("test", "-f", "/proc/net/if_inet6") if err := cmd.Run(); err != nil { return true } return false }, "Test requires support for IPv6", } NotGCCGO = testRequirement{ func() bool { out, err := exec.Command("go", "version").Output() if err == nil && strings.Contains(string(out), "gccgo") { return false } return true }, "Test requires native Golang compiler instead of GCCGO", } UserNamespaceInKernel = testRequirement{ func() bool { if _, err := os.Stat("/proc/self/uid_map"); os.IsNotExist(err) { /* * This kernel-provided file only exists if user namespaces are * supported */ return false } // We need extra check on redhat based distributions if f, err := os.Open("/sys/module/user_namespace/parameters/enable"); err == nil { b := make([]byte, 1) _, _ = f.Read(b) if string(b) == "N" { return false } return true } return true }, "Kernel must have user namespaces configured and enabled.", } NotUserNamespace = testRequirement{ func() bool { root := os.Getenv("DOCKER_REMAP_ROOT") if root != "" { return false } return true }, "Test cannot be run when remapping root", } ) // testRequires checks if the environment satisfies the requirements // for the test to run or skips the tests. func testRequires(c *check.C, requirements ...testRequirement) { for _, r := range requirements { if !r.Condition() { c.Skip(r.SkipMessage) } } }