Use TLS for tests if needed

Signed-off-by: Christopher Crone <christopher.crone@docker.com>

integration-cli/docker_api_containers_test.go

@@ -1372,8 +1372,7 @@ func (s *DockerSuite) TestContainerAPICreateNoHostConfig118(c *check.C) {
 		Image: "busybox",
 	}
 
-	var httpClient *http.Client
-	cli, err := client.NewClient(daemonHost(), "v1.18", httpClient, map[string]string{})
+	cli, err := NewEnvClientWithVersion("v1.18")
 
 	_, err = cli.ContainerCreate(context.Background(), &config, &containertypes.HostConfig{}, &networktypes.NetworkingConfig{}, "")
 	c.Assert(err, checker.IsNil)

integration-cli/docker_api_images_test.go

@@ -179,8 +179,7 @@ func (s *DockerSuite) TestAPIImagesSizeCompatibility(c *check.C) {
 		Labels      map[string]string
 	}
 
-	var httpClient *http.Client
-	cli, err = client.NewClient(daemonHost(), "v1.24", httpClient, nil)
+	cli, err = NewEnvClientWithVersion("v1.24")
 	c.Assert(err, checker.IsNil)
 	defer cli.Close()
 

integration-cli/docker_api_inspect_unix_test.go

@@ -4,9 +4,7 @@ package main
 
 import (
 	"encoding/json"
-	"net/http"
 
-	"github.com/docker/docker/client"
 	"github.com/docker/docker/integration-cli/checker"
 	"github.com/go-check/check"
 	"golang.org/x/net/context"
@@ -19,8 +17,7 @@ func (s *DockerSuite) TestInspectAPICpusetInConfigPre120(c *check.C) {
 
 	name := "cpusetinconfig-pre120"
 	dockerCmd(c, "run", "--name", name, "--cpuset-cpus", "0", "busybox", "true")
-	var httpClient *http.Client
-	cli, err := client.NewClient(daemonHost(), "v1.19", httpClient, nil)
+	cli, err := NewEnvClientWithVersion("v1.19")
 	c.Assert(err, checker.IsNil)
 	defer cli.Close()
 	_, body, err := cli.ContainerInspectWithRaw(context.Background(), name, false)

integration-cli/docker_cli_kill_test.go

@@ -1,11 +1,9 @@
 package main
 
 import (
-	"net/http"
 	"strings"
 	"time"
 
-	"github.com/docker/docker/client"
 	"github.com/docker/docker/integration-cli/checker"
 	"github.com/docker/docker/integration-cli/cli"
 	"github.com/go-check/check"
@@ -131,8 +129,7 @@ func (s *DockerSuite) TestKillStoppedContainerAPIPre120(c *check.C) {
 	testRequires(c, DaemonIsLinux) // Windows only supports 1.25 or later
 	runSleepingContainer(c, "--name", "docker-kill-test-api", "-d")
 	dockerCmd(c, "stop", "docker-kill-test-api")
-	var httpClient *http.Client
-	cli, err := client.NewClient(daemonHost(), "v1.19", httpClient, nil)
+	cli, err := NewEnvClientWithVersion("v1.19")
 	c.Assert(err, check.IsNil)
 	defer cli.Close()
 	err = cli.ContainerKill(context.Background(), "docker-kill-test-api", "SIGKILL")

integration-cli/docker_cli_run_test.go

@@ -4127,7 +4127,7 @@ func (s *DockerSuite) TestRunRm(c *check.C) {
 // Test that auto-remove is performed by the client on API versions that do not support daemon-side api-remove (API < 1.25)
 func (s *DockerSuite) TestRunRmPre125Api(c *check.C) {
 	name := "miss-me-when-im-gone"
-	envs := appendBaseEnv(false, "DOCKER_API_VERSION=1.24")
+	envs := appendBaseEnv(os.Getenv("DOCKER_TLS_VERIFY") != "", "DOCKER_API_VERSION=1.24")
 	cli.Docker(cli.Args("run", "--name="+name, "--rm", "busybox"), cli.WithEnvironmentVariables(envs...)).Assert(c, icmd.Success)
 
 	cli.Docker(cli.Inspect(name), cli.Format(".name")).Assert(c, icmd.Expected{

integration-cli/docker_utils_test.go

@@ -6,7 +6,6 @@ import (
 	"fmt"
 	"io"
 	"io/ioutil"
-	"net/http"
 	"os"
 	"path"
 	"path/filepath"
@@ -373,8 +372,7 @@ func waitInspectWithArgs(name, expr, expected string, timeout time.Duration, arg
 }
 
 func getInspectBody(c *check.C, version, id string) []byte {
-	var httpClient *http.Client
-	cli, err := client.NewClient(daemonHost(), version, httpClient, nil)
+	cli, err := NewEnvClientWithVersion(version)
 	c.Assert(err, check.IsNil)
 	defer cli.Close()
 	_, body, err := cli.ContainerInspectWithRaw(context.Background(), id, false)

integration-cli/request/request.go

@@ -129,7 +129,11 @@ func New(host, endpoint string, modifiers ...func(*http.Request) error) (*http.R
 		return nil, fmt.Errorf("could not create new request: %v", err)
 	}
 
+	if os.Getenv("DOCKER_TLS_VERIFY") != "" {
+		req.URL.Scheme = "https"
+	} else {
 		req.URL.Scheme = "http"
+	}
 	req.URL.Host = addr
 
 	for _, config := range modifiers {

integration-cli/utils_test.go

@@ -183,3 +183,14 @@ func RemoveOutputForExistingElements(output string, existing []string) string {
 	res := RemoveLinesForExistingElements(strings.Split(output, "\n"), existing)
 	return strings.Join(res, "\n")
 }
+
+// NewEnvClientWithVersion returns a docker client with a specified version.
+// See: github.com/docker/docker/client `NewEnvClient()`
+func NewEnvClientWithVersion(version string) (*client.Client, error) {
+	cli, err := client.NewEnvClient()
+	if err != nil {
+		return nil, err
+	}
+	cli.NegotiateAPIVersionPing(types.Ping{APIVersion: version})
+	return cli, nil
+}