cil/command: use dummy client for build-tests

These tests were using the default client, which would try to make a connection
with the daemon (which isn't running). Some of these test subsequently had
tests that depended on the result of that connection (i.e., "ping" result).

This patch updates the test to use a dummy client, so that the ping result is
predictable.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

cmd/docker/builder_test.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"bytes"
+	"context"
 	"os"
 	"path/filepath"
 	"testing"
@@ -10,6 +11,8 @@ import (
 	"github.com/docker/cli/cli/context/store"
 	"github.com/docker/cli/cli/flags"
 	"github.com/docker/cli/internal/test/output"
+	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/client"
 	"gotest.tools/v3/assert"
 	"gotest.tools/v3/fs"
 )
@@ -63,7 +66,11 @@ echo '{"SchemaVersion":"0.1.0","Vendor":"Docker Inc.","Version":"v0.6.3","ShortD
 			}
 
 			var b bytes.Buffer
-			dockerCli, err := command.NewDockerCli(command.WithInputStream(discard), command.WithCombinedStreams(&b))
+			dockerCli, err := command.NewDockerCli(
+				command.WithAPIClient(&fakeClient{}),
+				command.WithInputStream(discard),
+				command.WithCombinedStreams(&b),
+			)
 			assert.NilError(t, err)
 			assert.NilError(t, dockerCli.Initialize(flags.NewClientOptions()))
 
@@ -107,6 +114,14 @@ echo '{"SchemaVersion":"0.1.0","Vendor":"Docker Inc.","Version":"v0.6.3","ShortD
 	}
 }
 
+type fakeClient struct {
+	client.Client
+}
+
+func (c *fakeClient) Ping(_ context.Context) (types.Ping, error) {
+	return types.Ping{OSType: "linux"}, nil
+}
+
 func TestBuildkitDisabled(t *testing.T) {
 	t.Setenv("DOCKER_BUILDKIT", "0")
 
@@ -117,7 +132,11 @@ func TestBuildkitDisabled(t *testing.T) {
 
 	b := bytes.NewBuffer(nil)
 
-	dockerCli, err := command.NewDockerCli(command.WithInputStream(discard), command.WithCombinedStreams(b))
+	dockerCli, err := command.NewDockerCli(
+		command.WithAPIClient(&fakeClient{}),
+		command.WithInputStream(discard),
+		command.WithCombinedStreams(b),
+	)
 	assert.NilError(t, err)
 	assert.NilError(t, dockerCli.Initialize(flags.NewClientOptions()))
 	dockerCli.ConfigFile().CLIPluginsExtraDirs = []string{dir.Path()}
@@ -147,7 +166,11 @@ func TestBuilderBroken(t *testing.T) {
 
 	b := bytes.NewBuffer(nil)
 
-	dockerCli, err := command.NewDockerCli(command.WithInputStream(discard), command.WithCombinedStreams(b))
+	dockerCli, err := command.NewDockerCli(
+		command.WithAPIClient(&fakeClient{}),
+		command.WithInputStream(discard),
+		command.WithCombinedStreams(b),
+	)
 	assert.NilError(t, err)
 	assert.NilError(t, dockerCli.Initialize(flags.NewClientOptions()))
 	dockerCli.ConfigFile().CLIPluginsExtraDirs = []string{dir.Path()}
@@ -180,7 +203,11 @@ func TestBuilderBrokenEnforced(t *testing.T) {
 
 	b := bytes.NewBuffer(nil)
 
-	dockerCli, err := command.NewDockerCli(command.WithInputStream(discard), command.WithCombinedStreams(b))
+	dockerCli, err := command.NewDockerCli(
+		command.WithAPIClient(&fakeClient{}),
+		command.WithInputStream(discard),
+		command.WithCombinedStreams(b),
+	)
 	assert.NilError(t, err)
 	assert.NilError(t, dockerCli.Initialize(flags.NewClientOptions()))
 	dockerCli.ConfigFile().CLIPluginsExtraDirs = []string{dir.Path()}