Fixes some unit tests to be able to run them on windows

Some of them are skipped for now (because the feature is not supported
or needs more work), some of them are fixed.

Signed-off-by: Vincent Demeester <vincent@sbr.pm>

cli/command/image/build_linux_test.go

@@ -0,0 +1,54 @@
+//+build linux
+
+package image
+
+import (
+	"bytes"
+	"io"
+	"io/ioutil"
+	"syscall"
+	"testing"
+
+	"github.com/docker/cli/internal/test"
+	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/pkg/archive"
+	"github.com/gotestyourself/gotestyourself/assert"
+	is "github.com/gotestyourself/gotestyourself/assert/cmp"
+	"github.com/gotestyourself/gotestyourself/fs"
+	"golang.org/x/net/context"
+)
+
+func TestRunBuildResetsUidAndGidInContext(t *testing.T) {
+	dest := fs.NewDir(t, "test-build-context-dest")
+	defer dest.Remove()
+
+	fakeImageBuild := func(_ context.Context, context io.Reader, options types.ImageBuildOptions) (types.ImageBuildResponse, error) {
+		assert.NilError(t, archive.Untar(context, dest.Path(), nil))
+
+		body := new(bytes.Buffer)
+		return types.ImageBuildResponse{Body: ioutil.NopCloser(body)}, nil
+	}
+	cli := test.NewFakeCli(&fakeClient{imageBuildFunc: fakeImageBuild})
+
+	dir := fs.NewDir(t, "test-build-context",
+		fs.WithFile("foo", "some content", fs.AsUser(65534, 65534)),
+		fs.WithFile("Dockerfile", `
+			FROM alpine:3.6
+			COPY foo bar /
+		`),
+	)
+	defer dir.Remove()
+
+	options := newBuildOptions()
+	options.context = dir.Path()
+
+	err := runBuild(cli, options)
+	assert.NilError(t, err)
+
+	files, err := ioutil.ReadDir(dest.Path())
+	assert.NilError(t, err)
+	for _, fileInfo := range files {
+		assert.Check(t, is.Equal(uint32(0), fileInfo.Sys().(*syscall.Stat_t).Uid))
+		assert.Check(t, is.Equal(uint32(0), fileInfo.Sys().(*syscall.Stat_t).Gid))
+	}
+}

cli/command/image/build_test.go

@@ -6,9 +6,7 @@ import (
 	"io/ioutil"
 	"os"
 	"path/filepath"
-	"runtime"
 	"sort"
-	"syscall"
 	"testing"
 
 	"github.com/docker/cli/cli/command"
@@ -18,45 +16,9 @@ import (
 	"github.com/gotestyourself/gotestyourself/assert"
 	is "github.com/gotestyourself/gotestyourself/assert/cmp"
 	"github.com/gotestyourself/gotestyourself/fs"
-	"github.com/gotestyourself/gotestyourself/skip"
 	"golang.org/x/net/context"
 )
 
-func TestRunBuildResetsUidAndGidInContext(t *testing.T) {
-	skip.IfCondition(t, runtime.GOOS == "windows", "uid and gid not relevant on windows")
-	dest := fs.NewDir(t, "test-build-context-dest")
-	defer dest.Remove()
-
-	fakeImageBuild := func(_ context.Context, context io.Reader, options types.ImageBuildOptions) (types.ImageBuildResponse, error) {
-		assert.NilError(t, archive.Untar(context, dest.Path(), nil))
-
-		body := new(bytes.Buffer)
-		return types.ImageBuildResponse{Body: ioutil.NopCloser(body)}, nil
-	}
-	cli := test.NewFakeCli(&fakeClient{imageBuildFunc: fakeImageBuild})
-
-	dir := fs.NewDir(t, "test-build-context",
-		fs.WithFile("foo", "some content", fs.AsUser(65534, 65534)),
-		fs.WithFile("Dockerfile", `
-			FROM alpine:3.6
-			COPY foo bar /
-		`),
-	)
-	defer dir.Remove()
-
-	options := newBuildOptions()
-	options.context = dir.Path()
-
-	err := runBuild(cli, options)
-	assert.NilError(t, err)
-
-	files, err := ioutil.ReadDir(dest.Path())
-	assert.NilError(t, err)
-	for _, fileInfo := range files {
-		assert.Check(t, is.Equal(uint32(0), fileInfo.Sys().(*syscall.Stat_t).Uid))
-		assert.Check(t, is.Equal(uint32(0), fileInfo.Sys().(*syscall.Stat_t).Gid))
-	}
-}
 func TestRunBuildDockerfileFromStdinWithCompress(t *testing.T) {
 	dest, err := ioutil.TempDir("", "test-build-compress-dest")
 	assert.NilError(t, err)