report outputFormat in PrintFlags err

hack/make-rules/test-cmd-util.sh

@@ -693,7 +693,7 @@ run_pod_tests() {
   kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'
 
   ## Patch can modify a local object
-  kubectl patch --local -f pkg/kubectl/validation/testdata/v1/validPod.yaml --patch='{"spec": {"restartPolicy":"Never"}}' -o jsonpath='{.spec.restartPolicy}' | grep -q "Never"
+  kubectl patch --local -f pkg/kubectl/validation/testdata/v1/validPod.yaml --patch='{"spec": {"restartPolicy":"Never"}}' -o yaml | grep -q "Never"
 
   ## Patch fails with error message "not patched" and exit code 1
   output_message=$(! kubectl patch "${kube_flags[@]}" pod valid-pod -p='{"spec":{"replicas":7}}' 2>&1)
@@ -2139,8 +2139,7 @@ run_recursive_resources_tests() {
   kube::test::get_object_assert deployment "{{range.items}}{{$id_field}}:{{end}}" 'nginx:'
   kube::test::get_object_assert deployment "{{range.items}}{{$image_field0}}:{{end}}" "${IMAGE_DEPLOYMENT_R1}:"
   # Command
-  output_message=$(kubectl convert --local -f hack/testdata/deployment-revision1.yaml --output-version=apps/v1beta1 -o go-template='{{ .apiVersion }}' "${kube_flags[@]}")
+  output_message=$(kubectl convert --local -f hack/testdata/deployment-revision1.yaml --output-version=apps/v1beta1 -o yaml "${kube_flags[@]}")
-  echo $output_message
   # Post-condition: apiVersion is still extensions/v1beta1 in the live deployment, but command output is the new value
   kube::test::get_object_assert 'deployment nginx' "{{ .apiVersion }}" 'extensions/v1beta1'
   kube::test::if_has_string "${output_message}" "apps/v1beta1"
@@ -2851,7 +2850,7 @@ run_rc_tests() {
   # Pre-condition: don't use --port flag
   output_message=$(kubectl expose -f test/fixtures/doc-yaml/admin/high-availability/etcd.yaml --selector=test=etcd 2>&1 "${kube_flags[@]}")
   # Post-condition: expose succeeded
-  kube::test::if_has_string "${output_message}" 'etcd-server\" exposed'
+  kube::test::if_has_string "${output_message}" 'etcd-server exposed'
   # Post-condition: generated service has both ports from the exposed pod
   kube::test::get_object_assert 'service etcd-server' "{{$port_name}} {{$port_field}}" 'port-1 2380'
   kube::test::get_object_assert 'service etcd-server' "{{$second_port_name}} {{$second_port_field}}" 'port-2 2379'

pkg/kubectl/cmd/certificates.go

@@ -60,8 +60,8 @@ type CertificateOptions struct {
 	csrNames    []string
 	outputStyle string
 
-	clientSetFunc func() (internalclientset.Interface, error)
+	clientSet internalclientset.Interface
-	builderFunc   func() *resource.Builder
+	builder   *resource.Builder
 
 	genericclioptions.IOStreams
 }
@@ -79,8 +79,11 @@ func (o *CertificateOptions) Complete(f cmdutil.Factory, cmd *cobra.Command, arg
 		return printer.PrintObj(obj, out)
 	}
 
-	o.builderFunc = f.NewBuilder
+	o.builder = f.NewBuilder()
-	o.clientSetFunc = f.ClientSet
+	o.clientSet, err = f.ClientSet()
+	if err != nil {
+		return err
+	}
 
 	return nil
 }
@@ -127,7 +130,7 @@ func NewCmdCertificateApprove(f cmdutil.Factory, ioStreams genericclioptions.IOS
 }
 
 func (o *CertificateOptions) RunCertificateApprove(force bool) error {
-	return o.modifyCertificateCondition(o.builderFunc, o.clientSetFunc, force, func(csr *certificates.CertificateSigningRequest) (*certificates.CertificateSigningRequest, bool) {
+	return o.modifyCertificateCondition(o.builder, o.clientSet, force, func(csr *certificates.CertificateSigningRequest) (*certificates.CertificateSigningRequest, bool) {
 		var alreadyApproved bool
 		for _, c := range csr.Status.Conditions {
 			if c.Type == certificates.CertificateApproved {
@@ -177,7 +180,7 @@ func NewCmdCertificateDeny(f cmdutil.Factory, ioStreams genericclioptions.IOStre
 }
 
 func (o *CertificateOptions) RunCertificateDeny(force bool) error {
-	return o.modifyCertificateCondition(o.builderFunc, o.clientSetFunc, force, func(csr *certificates.CertificateSigningRequest) (*certificates.CertificateSigningRequest, bool) {
+	return o.modifyCertificateCondition(o.builder, o.clientSet, force, func(csr *certificates.CertificateSigningRequest) (*certificates.CertificateSigningRequest, bool) {
 		var alreadyDenied bool
 		for _, c := range csr.Status.Conditions {
 			if c.Type == certificates.CertificateDenied {
@@ -197,13 +200,9 @@ func (o *CertificateOptions) RunCertificateDeny(force bool) error {
 	})
 }
 
-func (options *CertificateOptions) modifyCertificateCondition(builderFunc func() *resource.Builder, clientSetFunc func() (internalclientset.Interface, error), force bool, modify func(csr *certificates.CertificateSigningRequest) (*certificates.CertificateSigningRequest, bool)) error {
+func (options *CertificateOptions) modifyCertificateCondition(builder *resource.Builder, clientSet internalclientset.Interface, force bool, modify func(csr *certificates.CertificateSigningRequest) (*certificates.CertificateSigningRequest, bool)) error {
 	var found int
-	c, err := clientSetFunc()
+	r := builder.
-	if err != nil {
-		return err
-	}
-	r := builderFunc().
 		Internal().
 		ContinueOnError().
 		FilenameParam(false, &options.FilenameOptions).
@@ -212,14 +211,14 @@ func (options *CertificateOptions) modifyCertificateCondition(builderFunc func()
 		Flatten().
 		Latest().
 		Do()
-	err = r.Visit(func(info *resource.Info, err error) error {
+	err := r.Visit(func(info *resource.Info, err error) error {
 		if err != nil {
 			return err
 		}
 		csr := info.Object.(*certificates.CertificateSigningRequest)
 		csr, hasCondition := modify(csr)
 		if !hasCondition || force {
-			csr, err = c.Certificates().
+			csr, err = clientSet.Certificates().
 				CertificateSigningRequests().
 				UpdateApproval(csr)
 			if err != nil {

pkg/kubectl/cmd/clusterinfo_dump_test.go

@@ -17,7 +17,6 @@ limitations under the License.
 package cmd
 
 import (
-	"bytes"
 	"io/ioutil"
 	"os"
 	"path"
@@ -30,15 +29,15 @@ import (
 func TestSetupOutputWriterNoOp(t *testing.T) {
 	tests := []string{"", "-"}
 	for _, test := range tests {
-		out := &bytes.Buffer{}
+		_, _, buf, _ := genericclioptions.NewTestIOStreams()
 		f := cmdtesting.NewTestFactory()
 		defer f.Cleanup()
 
-		cmd := NewCmdClusterInfoDump(f, genericclioptions.IOStreams{Out: os.Stdout, ErrOut: os.Stderr})
+		cmd := NewCmdClusterInfoDump(f, genericclioptions.NewTestIOStreamsDiscard())
 		cmd.Flag("output-directory").Value.Set(test)
-		writer := setupOutputWriter(cmd, out, "/some/file/that/should/be/ignored")
+		writer := setupOutputWriter(cmd, buf, "/some/file/that/should/be/ignored")
-		if writer != out {
+		if writer != buf {
-			t.Errorf("expected: %v, saw: %v", out, writer)
+			t.Errorf("expected: %v, saw: %v", buf, writer)
 		}
 	}
 }
@@ -52,15 +51,15 @@ func TestSetupOutputWriterFile(t *testing.T) {
 	fullPath := path.Join(dir, file)
 	defer os.RemoveAll(dir)
 
-	out := &bytes.Buffer{}
+	_, _, buf, _ := genericclioptions.NewTestIOStreams()
 	f := cmdtesting.NewTestFactory()
 	defer f.Cleanup()
 
-	cmd := NewCmdClusterInfoDump(f, genericclioptions.IOStreams{Out: os.Stdout, ErrOut: os.Stderr})
+	cmd := NewCmdClusterInfoDump(f, genericclioptions.NewTestIOStreamsDiscard())
 	cmd.Flag("output-directory").Value.Set(dir)
-	writer := setupOutputWriter(cmd, out, file)
+	writer := setupOutputWriter(cmd, buf, file)
-	if writer == out {
+	if writer == buf {
-		t.Errorf("expected: %v, saw: %v", out, writer)
+		t.Errorf("expected: %v, saw: %v", buf, writer)
 	}
 	output := "some data here"
 	writer.Write([]byte(output))

pkg/kubectl/cmd/cp_test.go

@@ -525,10 +525,9 @@ func TestCopyToPod(t *testing.T) {
 	}
 
 	tf.ClientConfigVal = defaultClientConfig()
-	buf := bytes.NewBuffer([]byte{})
+	ioStreams, _, _, _ := genericclioptions.NewTestIOStreams()
-	errBuf := bytes.NewBuffer([]byte{})
 
-	cmd := NewCmdCp(tf, genericclioptions.IOStreams{Out: buf, ErrOut: errBuf})
+	cmd := NewCmdCp(tf, ioStreams)
 
 	srcFile, err := ioutil.TempDir("", "test")
 	if err != nil {
@@ -556,7 +555,7 @@ func TestCopyToPod(t *testing.T) {
 	}
 
 	for name, test := range tests {
-		opts := NewCopyOptions(genericclioptions.IOStreams{Out: buf, ErrOut: errBuf})
+		opts := NewCopyOptions(ioStreams)
 		src := fileSpec{
 			File: srcFile,
 		}

pkg/kubectl/cmd/drain_test.go

@@ -17,7 +17,6 @@ limitations under the License.
 package cmd
 
 import (
-	"bytes"
 	"errors"
 	"fmt"
 	"io"
@@ -198,8 +197,8 @@ func TestCordon(t *testing.T) {
 			}
 			tf.ClientConfigVal = defaultClientConfig()
 
-			buf := bytes.NewBuffer([]byte{})
+			ioStreams, _, _, _ := genericclioptions.NewTestIOStreams()
-			cmd := test.cmd(tf, genericclioptions.IOStreams{Out: buf, ErrOut: buf})
+			cmd := test.cmd(tf, ioStreams)
 
 			saw_fatal := false
 			func() {
@@ -708,9 +707,8 @@ func TestDrain(t *testing.T) {
 				}
 				tf.ClientConfigVal = defaultClientConfig()
 
-				buf := bytes.NewBuffer([]byte{})
+				ioStreams, _, _, errBuf := genericclioptions.NewTestIOStreams()
-				errBuf := bytes.NewBuffer([]byte{})
+				cmd := NewCmdDrain(tf, ioStreams)
-				cmd := NewCmdDrain(tf, genericclioptions.IOStreams{Out: buf, ErrOut: errBuf})
 
 				saw_fatal := false
 				fatal_msg := ""

pkg/kubectl/cmd/label_test.go

@@ -328,14 +328,15 @@ func TestLabelErrors(t *testing.T) {
 			tf.Namespace = "test"
 			tf.ClientConfigVal = defaultClientConfig()
 
+			ioStreams, _, _, _ := genericclioptions.NewTestIOStreams()
 			buf := bytes.NewBuffer([]byte{})
-			cmd := NewCmdLabel(tf, genericclioptions.IOStreams{Out: buf, ErrOut: buf})
+			cmd := NewCmdLabel(tf, ioStreams)
 			cmd.SetOutput(buf)
 
 			for k, v := range testCase.flags {
 				cmd.Flags().Set(k, v)
 			}
-			opts := NewLabelOptions(genericclioptions.IOStreams{Out: buf, ErrOut: buf})
+			opts := NewLabelOptions(ioStreams)
 			err := opts.Complete(tf, cmd, testCase.args)
 			if err == nil {
 				err = opts.Validate()
@@ -390,9 +391,9 @@ func TestLabelForResourceFromFile(t *testing.T) {
 	tf.Namespace = "test"
 	tf.ClientConfigVal = defaultClientConfig()
 
-	buf := bytes.NewBuffer([]byte{})
+	ioStreams, _, buf, _ := genericclioptions.NewTestIOStreams()
-	cmd := NewCmdLabel(tf, genericclioptions.IOStreams{Out: buf, ErrOut: buf})
+	cmd := NewCmdLabel(tf, ioStreams)
-	opts := NewLabelOptions(genericclioptions.IOStreams{Out: buf, ErrOut: buf})
+	opts := NewLabelOptions(ioStreams)
 	opts.Filenames = []string{"../../../test/e2e/testing-manifests/statefulset/cassandra/controller.yaml"}
 	err := opts.Complete(tf, cmd, []string{"a=b"})
 	if err == nil {
@@ -423,9 +424,9 @@ func TestLabelLocal(t *testing.T) {
 	tf.Namespace = "test"
 	tf.ClientConfigVal = defaultClientConfig()
 
-	buf := bytes.NewBuffer([]byte{})
+	ioStreams, _, buf, _ := genericclioptions.NewTestIOStreams()
-	cmd := NewCmdLabel(tf, genericclioptions.IOStreams{Out: buf, ErrOut: buf})
+	cmd := NewCmdLabel(tf, ioStreams)
-	opts := NewLabelOptions(genericclioptions.IOStreams{Out: buf, ErrOut: buf})
+	opts := NewLabelOptions(ioStreams)
 	opts.Filenames = []string{"../../../test/e2e/testing-manifests/statefulset/cassandra/controller.yaml"}
 	opts.local = true
 	err := opts.Complete(tf, cmd, []string{"a=b"})
@@ -481,10 +482,10 @@ func TestLabelMultipleObjects(t *testing.T) {
 	tf.Namespace = "test"
 	tf.ClientConfigVal = defaultClientConfig()
 
-	buf := bytes.NewBuffer([]byte{})
+	ioStreams, _, buf, _ := genericclioptions.NewTestIOStreams()
-	opts := NewLabelOptions(genericclioptions.IOStreams{Out: buf, ErrOut: buf})
+	opts := NewLabelOptions(ioStreams)
 	opts.all = true
-	cmd := NewCmdLabel(tf, genericclioptions.IOStreams{Out: buf, ErrOut: buf})
+	cmd := NewCmdLabel(tf, ioStreams)
 	err := opts.Complete(tf, cmd, []string{"pods", "a=b"})
 	if err == nil {
 		err = opts.Validate()

pkg/printers/flags.go

@@ -23,11 +23,17 @@ import (
 )
 
 type NoCompatiblePrinterError struct {
-	Options interface{}
+	OutputFormat *string
+	Options      interface{}
 }
 
 func (e NoCompatiblePrinterError) Error() string {
-	return fmt.Sprintf("unable to match a printer suitable for the options specified: %#v", e.Options)
+	output := ""
+	if e.OutputFormat != nil {
+		output = *e.OutputFormat
+	}
+
+	return fmt.Sprintf("unable to match a printer suitable for the output format %q and the options specified: %#v", output, e.Options)
 }
 
 func IsNoCompatiblePrinterError(err error) bool {
@@ -67,7 +73,7 @@ func (f *PrintFlags) ToPrinter() (ResourcePrinter, error) {
 		return p, err
 	}
 
-	return nil, NoCompatiblePrinterError{f}
+	return nil, NoCompatiblePrinterError{Options: f, OutputFormat: f.OutputFormat}
 }
 
 func (f *PrintFlags) AddFlags(cmd *cobra.Command) {

pkg/printers/json_yaml_flags.go

@@ -44,7 +44,7 @@ func (f *JSONYamlPrintFlags) ToPrinter(outputFormat string) (ResourcePrinter, er
 	case "yaml":
 		printer = &YAMLPrinter{}
 	default:
-		return nil, NoCompatiblePrinterError{f}
+		return nil, NoCompatiblePrinterError{Options: f, OutputFormat: &outputFormat}
 	}
 
 	// wrap the printer in a versioning printer that understands when to convert and when not to convert

pkg/printers/jsonpath_flags.go

@@ -39,7 +39,7 @@ type JSONPathPrintFlags struct {
 // Returns false if the specified templateFormat does not match a template format.
 func (f *JSONPathPrintFlags) ToPrinter(templateFormat string) (ResourcePrinter, error) {
 	if (f.TemplateArgument == nil || len(*f.TemplateArgument) == 0) && len(templateFormat) == 0 {
-		return nil, NoCompatiblePrinterError{f}
+		return nil, NoCompatiblePrinterError{Options: f, OutputFormat: &templateFormat}
 	}
 
 	templateValue := ""
@@ -66,7 +66,7 @@ func (f *JSONPathPrintFlags) ToPrinter(templateFormat string) (ResourcePrinter,
 	}
 
 	if _, supportedFormat := templateFormats[templateFormat]; !supportedFormat {
-		return nil, NoCompatiblePrinterError{f}
+		return nil, NoCompatiblePrinterError{Options: f, OutputFormat: &templateFormat}
 	}
 
 	if len(templateValue) == 0 {

pkg/printers/name_flags.go

@@ -63,7 +63,7 @@ func (f *NamePrintFlags) ToPrinter(outputFormat string) (ResourcePrinter, error)
 	case "":
 		return namePrinter, nil
 	default:
-		return nil, NoCompatiblePrinterError{f}
+		return nil, NoCompatiblePrinterError{Options: f, OutputFormat: &outputFormat}
 	}
 }
 

pkg/printers/template_flags.go

@@ -39,7 +39,7 @@ type GoTemplatePrintFlags struct {
 // Returns false if the specified templateFormat does not match a template format.
 func (f *GoTemplatePrintFlags) ToPrinter(templateFormat string) (ResourcePrinter, error) {
 	if (f.TemplateArgument == nil || len(*f.TemplateArgument) == 0) && len(templateFormat) == 0 {
-		return nil, NoCompatiblePrinterError{f}
+		return nil, NoCompatiblePrinterError{Options: f, OutputFormat: &templateFormat}
 	}
 
 	templateValue := ""
@@ -68,7 +68,7 @@ func (f *GoTemplatePrintFlags) ToPrinter(templateFormat string) (ResourcePrinter
 	}
 
 	if _, supportedFormat := supportedFormats[templateFormat]; !supportedFormat {
-		return nil, NoCompatiblePrinterError{f}
+		return nil, NoCompatiblePrinterError{Options: f, OutputFormat: &templateFormat}
 	}
 
 	if len(templateValue) == 0 {