diff --git a/kyaml/fn/framework/example_test.go b/kyaml/fn/framework/example_test.go
index 477c45c16..cd6c3af15 100644
--- a/kyaml/fn/framework/example_test.go
+++ b/kyaml/fn/framework/example_test.go
@@ -603,3 +603,186 @@ func ExampleTemplateCommand_files() {
 	//   annotations:
 	//     a: b
 }
+
+// ExampleTemplateCommand_preprocess provides an example for using the TemplateCommand
+// with PreProcess to configure the template based on the input resources observed.
+func ExampleTemplateCommand_preprocess() {
+	config := &struct {
+		Key   string `json:"key" yaml:"key"`
+		Value string `json:"value" yaml:"value"`
+		Short bool
+	}{}
+
+	// create the template
+	cmd := framework.TemplateCommand{
+		// Template input
+		API: config,
+		PreProcess: func(rl *framework.ResourceList) error {
+			config.Short = len(rl.Items) < 3
+			return nil
+		},
+		// Template
+		Template: template.Must(template.New("example").Parse(`
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: foo
+  namespace: default
+  annotations:
+    {{ .Key }}: {{ .Value }}
+{{- if .Short }}
+    short: 'true'
+{{- end }}
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: bar
+  namespace: default
+  annotations:
+    {{ .Key }}: {{ .Value }}
+{{- if .Short }}
+    short: 'true'
+{{- end }}
+`)),
+	}.GetCommand()
+
+	cmd.SetArgs([]string{filepath.Join("testdata", "template", "config.yaml")})
+	if err := cmd.Execute(); err != nil {
+		fmt.Fprintf(cmd.ErrOrStderr(), "%v\n", err)
+	}
+
+	// Output:
+	// apiVersion: apps/v1
+	// kind: Deployment
+	// metadata:
+	//   name: foo
+	//   namespace: default
+	//   annotations:
+	//     a: b
+	//     short: 'true'
+	// ---
+	// apiVersion: apps/v1
+	// kind: Deployment
+	// metadata:
+	//   name: bar
+	//   namespace: default
+	//   annotations:
+	//     a: b
+	//     short: 'true'
+}
+
+// ExampleTemplateCommand_postprocess provides an example for using the TemplateCommand
+// with PostProcess to modify the results.
+func ExampleTemplateCommand_postprocess() {
+	config := &struct {
+		Key   string `json:"key" yaml:"key"`
+		Value string `json:"value" yaml:"value"`
+	}{}
+
+	// create the template
+	cmd := framework.TemplateCommand{
+		// Template input
+		API: config,
+		// Template
+		Template: template.Must(template.New("example").Parse(`
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: foo
+  namespace: default
+  annotations:
+    {{ .Key }}: {{ .Value }}
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: bar
+  namespace: default
+  annotations:
+    {{ .Key }}: {{ .Value }}
+`)),
+		PostProcess: func(rl *framework.ResourceList) error {
+			// trim the first resources
+			rl.Items = rl.Items[1:]
+			return nil
+		},
+	}.GetCommand()
+
+	cmd.SetArgs([]string{filepath.Join("testdata", "template", "config.yaml")})
+	if err := cmd.Execute(); err != nil {
+		fmt.Fprintf(cmd.ErrOrStderr(), "%v\n", err)
+	}
+
+	// Output:
+	// apiVersion: apps/v1
+	// kind: Deployment
+	// metadata:
+	//   name: bar
+	//   namespace: default
+	//   annotations:
+	//     a: b
+}
+
+// ExampleTemplateCommand_patch provides an example for using the TemplateCommand to
+// create a function which patches resources.
+func ExampleTemplateCommand_patch() {
+	// patch the foo resource only
+	s := framework.Selector{Names: []string{"foo"}}
+
+	cmd := framework.TemplateCommand{
+		API: &struct {
+			Key   string `json:"key" yaml:"key"`
+			Value string `json:"value" yaml:"value"`
+		}{},
+		Template: template.Must(template.New("example").Parse(`
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: foo
+  namespace: default
+  annotations:
+    {{ .Key }}: {{ .Value }}
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: bar
+  namespace: default
+  annotations:
+    {{ .Key }}: {{ .Value }}
+`)),
+		// PatchTemplates are applied to BOTH ResourceList input resources AND templated resources
+		PatchTemplates: []framework.PatchTemplate{{
+			Selector: &s,
+			Template: template.Must(template.New("test").Parse(`
+metadata:
+  annotations:
+    patched: 'true'
+`)),
+		}},
+	}.GetCommand()
+
+	cmd.SetArgs([]string{filepath.Join("testdata", "template", "config.yaml")})
+	if err := cmd.Execute(); err != nil {
+		fmt.Fprintf(cmd.ErrOrStderr(), "%v\n", err)
+	}
+
+	// Output:
+	// apiVersion: apps/v1
+	// kind: Deployment
+	// metadata:
+	//   name: foo
+	//   namespace: default
+	//   annotations:
+	//     a: b
+	//     patched: 'true'
+	// ---
+	// apiVersion: apps/v1
+	// kind: Deployment
+	// metadata:
+	//   name: bar
+	//   namespace: default
+	//   annotations:
+	//     a: b
+}
diff --git a/kyaml/fn/framework/framework.go b/kyaml/fn/framework/framework.go
index e45f78b02..3af4d3854 100644
--- a/kyaml/fn/framework/framework.go
+++ b/kyaml/fn/framework/framework.go
@@ -256,6 +256,9 @@ type TemplateCommand struct {
 	// Templates is a list of templates to render.
 	Templates []*template.Template
 
+	// PatchTemplates is a list of templates to render into Patches and apply.
+	PatchTemplates []PatchTemplate
+
 	// TemplateFiles list of templates to read from disk which are appended
 	// to Templates.
 	TemplatesFiles []string
@@ -342,6 +345,12 @@ func (tc TemplateCommand) GetCommand() cobra.Command {
 			}
 		}
 
+		for i := range tc.PatchTemplates {
+			if err := tc.PatchTemplates[i].Apply(&rl); err != nil {
+				return err
+			}
+		}
+
 		var err error
 		if tc.MergeResources {
 			rl.Items, err = filters.MergeFilter{}.Filter(rl.Items)
diff --git a/kyaml/fn/framework/frameworktestutil/frameworktestutil.go b/kyaml/fn/framework/frameworktestutil/frameworktestutil.go
index a6dfabda5..785df9c4e 100644
--- a/kyaml/fn/framework/frameworktestutil/frameworktestutil.go
+++ b/kyaml/fn/framework/frameworktestutil/frameworktestutil.go
@@ -35,10 +35,10 @@ type ResultsChecker struct {
 	// Defaults to "input*.yaml"
 	InputFilenameGlob string
 
-	// ExpectedOutputFilname is the file with the expected output of the function
+	// ExpectedOutputFilename is the file with the expected output of the function
 	// Defaults to "expected.yaml".  Directories containing neither this file
 	// nore ExpectedErrorFilename will be skipped.
-	ExpectedOutputFilname string
+	ExpectedOutputFilename string
 
 	// ExpectedErrorFilename is the file containing part of an expected error message
 	// Defaults to "error.yaml".  Directories containing neither this file
@@ -57,8 +57,8 @@ func (rc ResultsChecker) Assert(t *testing.T) bool {
 	if rc.ConfigInputFilename == "" {
 		rc.ConfigInputFilename = "config.yaml"
 	}
-	if rc.ExpectedOutputFilname == "" {
-		rc.ExpectedOutputFilname = "expected.yaml"
+	if rc.ExpectedOutputFilename == "" {
+		rc.ExpectedOutputFilename = "expected.yaml"
 	}
 	if rc.ExpectedErrorFilename == "" {
 		rc.ExpectedErrorFilename = "error.yaml"
@@ -90,64 +90,67 @@ func (rc ResultsChecker) compare(t *testing.T, path string) {
 		// missing input
 		return
 	}
-	if !assert.NoError(t, err) {
-		t.FailNow()
-	}
 	args := []string{configPath}
 
-	if rc.InputFilenameGlob != "" {
-		inputs, err := filepath.Glob(filepath.Join(path, rc.InputFilenameGlob))
-		if !assert.NoError(t, err) {
-			t.FailNow()
-		}
-		args = append(args, inputs...)
-	}
-
-	var actualOutput, actualError bytes.Buffer
-	cmd := rc.Command()
-	cmd.SetArgs(args)
-	cmd.SetOut(&actualOutput)
-	cmd.SetErr(&actualError)
-
 	expectedOutput, expectedError := rc.getExpected(t, path)
 	if expectedError == "" && expectedOutput == "" {
 		// missing expected
 		return
 	}
+	if !assert.NoError(t, err) {
+		t.FailNow()
+	}
 
-	err = cmd.Execute()
+	// run the test
+	t.Run(path, func(t *testing.T) {
+		if rc.InputFilenameGlob != "" {
+			inputs, err := filepath.Glob(filepath.Join(path, rc.InputFilenameGlob))
+			if !assert.NoError(t, err) {
+				t.FailNow()
+			}
+			args = append(args, inputs...)
+		}
 
-	// Compae the results
-	if expectedError != "" && !assert.Error(t, err, actualOutput.String()) {
-		t.FailNow()
-	}
-	if expectedError == "" && !assert.NoError(t, err, actualError.String()) {
-		t.FailNow()
-	}
-	if !assert.Equal(t,
-		strings.TrimSpace(expectedOutput),
-		strings.TrimSpace(actualOutput.String()), actualError.String()) {
-		t.FailNow()
-	}
-	if !assert.Contains(t,
-		strings.TrimSpace(actualError.String()),
-		strings.TrimSpace(expectedError), actualOutput.String()) {
-		t.FailNow()
-	}
+		var actualOutput, actualError bytes.Buffer
+		cmd := rc.Command()
+		cmd.SetArgs(args)
+		cmd.SetOut(&actualOutput)
+		cmd.SetErr(&actualError)
+
+		err = cmd.Execute()
+
+		// Compae the results
+		if expectedError != "" && !assert.Error(t, err, actualOutput.String()) {
+			t.FailNow()
+		}
+		if expectedError == "" && !assert.NoError(t, err, actualError.String()) {
+			t.FailNow()
+		}
+		if !assert.Equal(t,
+			strings.TrimSpace(expectedOutput),
+			strings.TrimSpace(actualOutput.String()), actualError.String()) {
+			t.FailNow()
+		}
+		if !assert.Contains(t,
+			strings.TrimSpace(actualError.String()),
+			strings.TrimSpace(expectedError), actualOutput.String()) {
+			t.FailNow()
+		}
+	})
 }
 
 // getExpected reads the expected results and error files
 func (rc ResultsChecker) getExpected(t *testing.T, path string) (string, string) {
 	// read the expected results
 	var expectedOutput, expectedError string
-	if rc.ExpectedOutputFilname != "" {
-		_, err := os.Stat(filepath.Join(path, rc.ExpectedOutputFilname))
+	if rc.ExpectedOutputFilename != "" {
+		_, err := os.Stat(filepath.Join(path, rc.ExpectedOutputFilename))
 		if !os.IsNotExist(err) && err != nil {
 			t.FailNow()
 		}
 		if err == nil {
 			// only read the file if it exists
-			b, err := ioutil.ReadFile(filepath.Join(path, rc.ExpectedOutputFilname))
+			b, err := ioutil.ReadFile(filepath.Join(path, rc.ExpectedOutputFilename))
 			if !assert.NoError(t, err) {
 				t.FailNow()
 			}
diff --git a/kyaml/fn/framework/patch.go b/kyaml/fn/framework/patch.go
new file mode 100644
index 000000000..c8654bf31
--- /dev/null
+++ b/kyaml/fn/framework/patch.go
@@ -0,0 +1,202 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package framework
+
+import (
+	"bytes"
+	"fmt"
+	"strings"
+	"text/template"
+
+	"sigs.k8s.io/kustomize/kyaml/errors"
+	"sigs.k8s.io/kustomize/kyaml/kio"
+	"sigs.k8s.io/kustomize/kyaml/sets"
+	"sigs.k8s.io/kustomize/kyaml/yaml"
+	"sigs.k8s.io/kustomize/kyaml/yaml/merge2"
+)
+
+// Applier applies some modification to a ResourceList
+type Applier interface {
+	Apply(rl *ResourceList) error
+}
+
+var _ Applier = PatchTemplate{}
+
+// PatchTemplate applies a patch to a collection of Resources
+type PatchTemplate struct {
+	// Template is a template to render into one or more patches.
+	Template *template.Template
+
+	// Selector targets the rendered patch to specific resources.
+	Selector *Selector
+}
+
+// Apply applies the patch to all matching resources in the list.  The rl.FunctionConfig
+// is provided to the template as input.
+func (p PatchTemplate) Apply(rl *ResourceList) error {
+	if p.Selector == nil {
+		// programming error -- user shouldn't see this
+		return errors.Errorf("must specify PatchTemplate.Selector")
+	}
+
+	matches, err := p.Selector.GetMatches(rl)
+	if err != nil {
+		return err
+	}
+	if len(matches) == 0 {
+		return nil
+	}
+	return p.apply(rl, p.Template, matches)
+}
+
+func (p *PatchTemplate) apply(rl *ResourceList, t *template.Template, matches []*yaml.RNode) error {
+	// render the patches
+	var b bytes.Buffer
+	if err := t.Execute(&b, rl.FunctionConfig); err != nil {
+		return errors.WrapPrefixf(err, "failed to render patch template %v", t.DefinedTemplates())
+	}
+
+	// parse the patches into RNodes
+	var nodes []*yaml.RNode
+	for _, s := range strings.Split(b.String(), "\n---\n") {
+		s = strings.TrimSpace(s)
+		if s == "" {
+			continue
+		}
+		newNodes, err := (&kio.ByteReader{Reader: bytes.NewBufferString(s)}).Read()
+		if err != nil {
+			// create the debug string
+			lines := strings.Split(s, "\n")
+			for j := range lines {
+				lines[j] = fmt.Sprintf("%03d %s", j+1, lines[j])
+			}
+			s = strings.Join(lines, "\n")
+			return errors.WrapPrefixf(err, "failed to parse rendered patch template into a resource:\n%s\n", s)
+		}
+		nodes = append(nodes, newNodes...)
+	}
+
+	// apply the patches to the matching resources
+	var err error
+	for j := range matches {
+		for i := range nodes {
+			matches[j], err = merge2.Merge(nodes[i], p.Selector.matches[j], yaml.MergeOptions{})
+			if err != nil {
+				return errors.WrapPrefixf(err, "failed to merge templated patch")
+			}
+		}
+	}
+	return nil
+}
+
+// Selector matches resources.  A resource matches if and only if ALL of the Selector fields
+// match the resource.  An empty Selector matches all resources.
+type Selector struct {
+	// Names is a list of metadata.names to match.  If empty match all names.
+	// e.g. Names: ["foo", "bar"] matches if `metadata.name` is either "foo" or "bar".
+	Names []string `json:"names" yaml:"names"`
+
+	namesSet sets.String
+
+	// Namespaces is a list of metadata.namespaces to match.  If empty match all namespaces.
+	// e.g. Namespaces: ["foo", "bar"] matches if `metadata.namespace` is either "foo" or "bar".
+	Namespaces []string `json:"namespaces" yaml:"namespaces"`
+
+	namespaceSet sets.String
+
+	// Kinds is a list of kinds to match.  If empty match all kinds.
+	// e.g. Kinds: ["foo", "bar"] matches if `kind` is either "foo" or "bar".
+	Kinds []string `json:"kinds" yaml:"kinds"`
+
+	kindsSet sets.String
+
+	// APIVersions is a list of apiVersions to match.  If empty apply match all apiVersions.
+	// e.g. APIVersions: ["foo/v1", "bar/v1"] matches if `apiVersion` is either "foo/v1" or "bar/v1".
+	APIVersions []string `json:"apiVersions" yaml:"apiVersions"`
+
+	apiVersionsSet sets.String
+
+	// Labels is a collection of labels to match.  All labels must match exactly.
+	// e.g. Labels: {"foo": "bar", "baz": "buz"] matches if BOTH "foo" and "baz" labels match.
+	Labels map[string]string `json:"labels" yaml:"labels"`
+
+	// Annotations is a collection of annotations to match.  All annotations must match exactly.
+	// e.g. Annotations: {"foo": "bar", "baz": "buz"] matches if BOTH "foo" and "baz" annotations match.
+	Annotations map[string]string `json:"annotations" yaml:"annotations"`
+
+	// Filter is an arbitrary filter function to match a resource.
+	// Selector matches if the function returns true.
+	Filter func(*yaml.RNode) bool
+
+	// matches contains a list of matching reosurces.
+	matches []*yaml.RNode
+}
+
+// GetMatches returns them matching resources from rl
+func (s *Selector) GetMatches(rl *ResourceList) ([]*yaml.RNode, error) {
+	if err := s.init(rl); err != nil {
+		return nil, err
+	}
+	return s.matches, nil
+}
+
+func (s *Selector) init(rl *ResourceList) error {
+	// index the selectors
+	s.matches = nil
+	s.kindsSet = sets.String{}
+	s.kindsSet.Insert(s.Kinds...)
+	s.apiVersionsSet = sets.String{}
+	s.apiVersionsSet.Insert(s.APIVersions...)
+	s.namesSet = sets.String{}
+	s.namesSet.Insert(s.Names...)
+	s.namespaceSet = sets.String{}
+	s.namespaceSet.Insert(s.Namespaces...)
+
+	//check each resource that matches the patch selector
+	for i := range rl.Items {
+		if match, err := s.isMatch(rl.Items[i]); err != nil {
+			return err
+		} else if !match {
+			continue
+		}
+		s.matches = append(s.matches, rl.Items[i])
+	}
+	return nil
+}
+
+// isMatch returns true if r matches the patch selector
+func (s *Selector) isMatch(r *yaml.RNode) (bool, error) {
+	m, err := r.GetMeta()
+	if err != nil {
+		return false, errors.Wrap(err)
+	}
+	if s.kindsSet.Len() > 0 && !s.kindsSet.Has(m.Kind) {
+		return false, nil
+	}
+	if s.apiVersionsSet.Len() > 0 && !s.apiVersionsSet.Has(m.APIVersion) {
+		return false, nil
+	}
+	if s.namesSet.Len() > 0 && !s.namesSet.Has(m.Name) {
+		return false, nil
+	}
+	if s.namespaceSet.Len() > 0 && !s.namespaceSet.Has(m.Namespace) {
+		return false, nil
+	}
+	for k := range s.Labels {
+		if m.Labels == nil || m.Labels[k] != s.Labels[k] {
+			return false, nil
+		}
+	}
+	for k := range s.Annotations {
+		if m.Annotations == nil || m.Annotations[k] != s.Annotations[k] {
+			return false, nil
+		}
+	}
+	if s.Filter != nil {
+		if match := s.Filter(r); !match {
+			return false, nil
+		}
+	}
+	return true, nil
+}
diff --git a/kyaml/fn/framework/patch_test.go b/kyaml/fn/framework/patch_test.go
new file mode 100644
index 000000000..467ee52b6
--- /dev/null
+++ b/kyaml/fn/framework/patch_test.go
@@ -0,0 +1,81 @@
+// Copyright 2019 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package framework_test
+
+import (
+	"testing"
+	"text/template"
+
+	"github.com/spf13/cobra"
+	"sigs.k8s.io/kustomize/kyaml/fn/framework"
+	"sigs.k8s.io/kustomize/kyaml/fn/framework/frameworktestutil"
+	"sigs.k8s.io/kustomize/kyaml/testutil"
+	"sigs.k8s.io/kustomize/kyaml/yaml"
+)
+
+func TestPatchTemplate(t *testing.T) {
+	// TODO: make this test pass on windows -- current failure seems spurious
+	testutil.SkipWindows(t)
+
+	cmdFn := func() cobra.Command {
+		type api struct {
+			Selector framework.Selector `json:"selector" yaml:"selector"`
+			A        string             `json:"a" yaml:"a"`
+			B        string             `json:"b" yaml:"b"`
+			Special  string             `json:"special" yaml:"special"`
+			LongList bool
+		}
+		var config api
+		filter := framework.Selector{
+			// this is a special manual filter for the Selector for when the built-in matchers
+			// are insufficient
+			Filter: func(rn *yaml.RNode) bool {
+				m, _ := rn.GetMeta()
+				return config.Special != "" && m.Annotations["foo"] == config.Special
+			},
+		}
+		return framework.TemplateCommand{
+			API: &config,
+			PreProcess: func(rl *framework.ResourceList) error {
+				// do some extra processing based on the inputs
+				config.LongList = len(rl.Items) > 2
+				return nil
+			},
+			PatchTemplates: []framework.PatchTemplate{
+				{
+					// Apply these rendered patches
+					Template: template.Must(template.New("test").Parse(`
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: example/sidecar:{{ .B }}
+---
+metadata:
+  annotations:
+    patched: '{{ .A }}'
+{{- if .LongList }}
+    long: 'true'
+{{- end }}
+`)),
+					// Use the selector from the input
+					Selector: &config.Selector,
+				},
+				{
+					// Apply these rendered patches
+					Template: template.Must(template.New("test").Parse(`
+metadata:
+  annotations:
+    filterPatched: '{{ .A }}'
+`)),
+					// Use an explicit selector
+					Selector: &filter,
+				},
+			},
+		}.GetCommand()
+	}
+
+	frameworktestutil.ResultsChecker{Command: cmdFn, TestDataDirectory: "patchtestdata"}.Assert(t)
+}
diff --git a/kyaml/fn/framework/patchtestdata/annotationselector/config.yaml b/kyaml/fn/framework/patchtestdata/annotationselector/config.yaml
new file mode 100644
index 000000000..0b800704e
--- /dev/null
+++ b/kyaml/fn/framework/patchtestdata/annotationselector/config.yaml
@@ -0,0 +1,10 @@
+# Copyright 2019 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+apiVersion: example.com/v1alpha1
+kind: patcher
+selector:
+  annotations:
+    foo: bar
+a: a
+b: b
\ No newline at end of file
diff --git a/kyaml/fn/framework/patchtestdata/annotationselector/expected.yaml b/kyaml/fn/framework/patchtestdata/annotationselector/expected.yaml
new file mode 100644
index 000000000..820220ae1
--- /dev/null
+++ b/kyaml/fn/framework/patchtestdata/annotationselector/expected.yaml
@@ -0,0 +1,23 @@
+# Copyright 2019 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-1
+  annotations:
+    baz: foo
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-2
+  annotations:
+    foo: bar
+    patched: 'a'
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: example/sidecar:b
\ No newline at end of file
diff --git a/kyaml/fn/framework/patchtestdata/annotationselector/input.yaml b/kyaml/fn/framework/patchtestdata/annotationselector/input.yaml
new file mode 100644
index 000000000..83e896dc4
--- /dev/null
+++ b/kyaml/fn/framework/patchtestdata/annotationselector/input.yaml
@@ -0,0 +1,16 @@
+# Copyright 2019 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-1
+  annotations:
+    baz: foo
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-2
+  annotations:
+    foo: bar
diff --git a/kyaml/fn/framework/patchtestdata/apiversionselector/config.yaml b/kyaml/fn/framework/patchtestdata/apiversionselector/config.yaml
new file mode 100644
index 000000000..4639f3c13
--- /dev/null
+++ b/kyaml/fn/framework/patchtestdata/apiversionselector/config.yaml
@@ -0,0 +1,9 @@
+# Copyright 2019 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+apiVersion: example.com/v1alpha1
+kind: patcher
+selector:
+  apiVersions: ["apps/v1alpha1"]
+a: a
+b: b
\ No newline at end of file
diff --git a/kyaml/fn/framework/patchtestdata/apiversionselector/expected.yaml b/kyaml/fn/framework/patchtestdata/apiversionselector/expected.yaml
new file mode 100644
index 000000000..2b87f041c
--- /dev/null
+++ b/kyaml/fn/framework/patchtestdata/apiversionselector/expected.yaml
@@ -0,0 +1,23 @@
+# Copyright 2019 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+apiVersion: apps/v1alpha1
+kind: Deployment
+metadata:
+  name: test-1
+  annotations:
+    baz: foo
+    patched: 'a'
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: example/sidecar:b
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-2
+  annotations:
+    foo: bar
diff --git a/kyaml/fn/framework/patchtestdata/apiversionselector/input.yaml b/kyaml/fn/framework/patchtestdata/apiversionselector/input.yaml
new file mode 100644
index 000000000..934468e94
--- /dev/null
+++ b/kyaml/fn/framework/patchtestdata/apiversionselector/input.yaml
@@ -0,0 +1,16 @@
+# Copyright 2019 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+apiVersion: apps/v1alpha1
+kind: Deployment
+metadata:
+  name: test-1
+  annotations:
+    baz: foo
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-2
+  annotations:
+    foo: bar
diff --git a/kyaml/fn/framework/patchtestdata/filterselector/config.yaml b/kyaml/fn/framework/patchtestdata/filterselector/config.yaml
new file mode 100644
index 000000000..70ae89b79
--- /dev/null
+++ b/kyaml/fn/framework/patchtestdata/filterselector/config.yaml
@@ -0,0 +1,8 @@
+# Copyright 2019 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+apiVersion: example.com/v1alpha1
+kind: patcher
+a: a
+b: b
+special: bar
\ No newline at end of file
diff --git a/kyaml/fn/framework/patchtestdata/filterselector/expected.yaml b/kyaml/fn/framework/patchtestdata/filterselector/expected.yaml
new file mode 100644
index 000000000..fa6066a32
--- /dev/null
+++ b/kyaml/fn/framework/patchtestdata/filterselector/expected.yaml
@@ -0,0 +1,32 @@
+# Copyright 2019 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-1
+  annotations:
+    baz: foo
+    patched: 'a'
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: example/sidecar:b
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-2
+  namespace: test
+  annotations:
+    foo: bar
+    patched: 'a'
+    filterPatched: 'a'
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: example/sidecar:b
\ No newline at end of file
diff --git a/kyaml/fn/framework/patchtestdata/filterselector/input.yaml b/kyaml/fn/framework/patchtestdata/filterselector/input.yaml
new file mode 100644
index 000000000..c48080aa9
--- /dev/null
+++ b/kyaml/fn/framework/patchtestdata/filterselector/input.yaml
@@ -0,0 +1,17 @@
+# Copyright 2019 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-1
+  annotations:
+    baz: foo
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-2
+  namespace: test
+  annotations:
+    foo: bar
diff --git a/kyaml/fn/framework/patchtestdata/kindselector/config.yaml b/kyaml/fn/framework/patchtestdata/kindselector/config.yaml
new file mode 100644
index 000000000..6ec10f8ed
--- /dev/null
+++ b/kyaml/fn/framework/patchtestdata/kindselector/config.yaml
@@ -0,0 +1,9 @@
+# Copyright 2019 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+apiVersion: example.com/v1alpha1
+kind: patcher
+selector:
+  kinds: ["Deployment"]
+a: a
+b: b
\ No newline at end of file
diff --git a/kyaml/fn/framework/patchtestdata/kindselector/expected.yaml b/kyaml/fn/framework/patchtestdata/kindselector/expected.yaml
new file mode 100644
index 000000000..4bc25c387
--- /dev/null
+++ b/kyaml/fn/framework/patchtestdata/kindselector/expected.yaml
@@ -0,0 +1,23 @@
+# Copyright 2019 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-1
+  annotations:
+    baz: foo
+    patched: 'a'
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: example/sidecar:b
+---
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: test-2
+  annotations:
+    foo: bar
diff --git a/kyaml/fn/framework/patchtestdata/kindselector/input.yaml b/kyaml/fn/framework/patchtestdata/kindselector/input.yaml
new file mode 100644
index 000000000..04c97d7a5
--- /dev/null
+++ b/kyaml/fn/framework/patchtestdata/kindselector/input.yaml
@@ -0,0 +1,16 @@
+# Copyright 2019 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-1
+  annotations:
+    baz: foo
+---
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: test-2
+  annotations:
+    foo: bar
diff --git a/kyaml/fn/framework/patchtestdata/labelselector/config.yaml b/kyaml/fn/framework/patchtestdata/labelselector/config.yaml
new file mode 100644
index 000000000..fb885f2ad
--- /dev/null
+++ b/kyaml/fn/framework/patchtestdata/labelselector/config.yaml
@@ -0,0 +1,10 @@
+# Copyright 2019 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+apiVersion: example.com/v1alpha1
+kind: patcher
+selector:
+  labels:
+    foo: bar
+a: a
+b: b
\ No newline at end of file
diff --git a/kyaml/fn/framework/patchtestdata/labelselector/expected.yaml b/kyaml/fn/framework/patchtestdata/labelselector/expected.yaml
new file mode 100644
index 000000000..5b08fc4ab
--- /dev/null
+++ b/kyaml/fn/framework/patchtestdata/labelselector/expected.yaml
@@ -0,0 +1,24 @@
+# Copyright 2019 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-1
+  labels:
+    baz: foo
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-2
+  labels:
+    foo: bar
+  annotations:
+    patched: 'a'
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: example/sidecar:b
\ No newline at end of file
diff --git a/kyaml/fn/framework/patchtestdata/labelselector/input.yaml b/kyaml/fn/framework/patchtestdata/labelselector/input.yaml
new file mode 100644
index 000000000..117a25c8d
--- /dev/null
+++ b/kyaml/fn/framework/patchtestdata/labelselector/input.yaml
@@ -0,0 +1,16 @@
+# Copyright 2019 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-1
+  labels:
+    baz: foo
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-2
+  labels:
+    foo: bar
diff --git a/kyaml/fn/framework/patchtestdata/longlistpreprocess/config.yaml b/kyaml/fn/framework/patchtestdata/longlistpreprocess/config.yaml
new file mode 100644
index 000000000..6ec10f8ed
--- /dev/null
+++ b/kyaml/fn/framework/patchtestdata/longlistpreprocess/config.yaml
@@ -0,0 +1,9 @@
+# Copyright 2019 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+apiVersion: example.com/v1alpha1
+kind: patcher
+selector:
+  kinds: ["Deployment"]
+a: a
+b: b
\ No newline at end of file
diff --git a/kyaml/fn/framework/patchtestdata/longlistpreprocess/expected.yaml b/kyaml/fn/framework/patchtestdata/longlistpreprocess/expected.yaml
new file mode 100644
index 000000000..9d820acb0
--- /dev/null
+++ b/kyaml/fn/framework/patchtestdata/longlistpreprocess/expected.yaml
@@ -0,0 +1,39 @@
+# Copyright 2019 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-1
+  annotations:
+    baz: foo
+    long: 'true'
+    patched: 'a'
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: example/sidecar:b
+---
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: test-2
+  annotations:
+    foo: bar
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-3
+  annotations:
+    foo: bar
+    long: 'true'
+    patched: 'a'
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: example/sidecar:b
\ No newline at end of file
diff --git a/kyaml/fn/framework/patchtestdata/longlistpreprocess/input.yaml b/kyaml/fn/framework/patchtestdata/longlistpreprocess/input.yaml
new file mode 100644
index 000000000..d22cff50d
--- /dev/null
+++ b/kyaml/fn/framework/patchtestdata/longlistpreprocess/input.yaml
@@ -0,0 +1,23 @@
+# Copyright 2019 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-1
+  annotations:
+    baz: foo
+---
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: test-2
+  annotations:
+    foo: bar
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-3
+  annotations:
+    foo: bar
diff --git a/kyaml/fn/framework/patchtestdata/nameselector/config.yaml b/kyaml/fn/framework/patchtestdata/nameselector/config.yaml
new file mode 100644
index 000000000..3242579b9
--- /dev/null
+++ b/kyaml/fn/framework/patchtestdata/nameselector/config.yaml
@@ -0,0 +1,9 @@
+# Copyright 2019 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+apiVersion: example.com/v1alpha1
+kind: patcher
+selector:
+  names: ["test-2"]
+a: a
+b: b
\ No newline at end of file
diff --git a/kyaml/fn/framework/patchtestdata/nameselector/expected.yaml b/kyaml/fn/framework/patchtestdata/nameselector/expected.yaml
new file mode 100644
index 000000000..820220ae1
--- /dev/null
+++ b/kyaml/fn/framework/patchtestdata/nameselector/expected.yaml
@@ -0,0 +1,23 @@
+# Copyright 2019 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-1
+  annotations:
+    baz: foo
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-2
+  annotations:
+    foo: bar
+    patched: 'a'
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: example/sidecar:b
\ No newline at end of file
diff --git a/kyaml/fn/framework/patchtestdata/nameselector/input.yaml b/kyaml/fn/framework/patchtestdata/nameselector/input.yaml
new file mode 100644
index 000000000..83e896dc4
--- /dev/null
+++ b/kyaml/fn/framework/patchtestdata/nameselector/input.yaml
@@ -0,0 +1,16 @@
+# Copyright 2019 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-1
+  annotations:
+    baz: foo
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-2
+  annotations:
+    foo: bar
diff --git a/kyaml/fn/framework/patchtestdata/namespaceselector/config.yaml b/kyaml/fn/framework/patchtestdata/namespaceselector/config.yaml
new file mode 100644
index 000000000..82912baa4
--- /dev/null
+++ b/kyaml/fn/framework/patchtestdata/namespaceselector/config.yaml
@@ -0,0 +1,9 @@
+# Copyright 2019 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+apiVersion: example.com/v1alpha1
+kind: patcher
+selector:
+  namespaces: ["test"]
+a: a
+b: b
\ No newline at end of file
diff --git a/kyaml/fn/framework/patchtestdata/namespaceselector/expected.yaml b/kyaml/fn/framework/patchtestdata/namespaceselector/expected.yaml
new file mode 100644
index 000000000..1e7b5e42b
--- /dev/null
+++ b/kyaml/fn/framework/patchtestdata/namespaceselector/expected.yaml
@@ -0,0 +1,24 @@
+# Copyright 2019 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-1
+  annotations:
+    baz: foo
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-2
+  namespace: test
+  annotations:
+    foo: bar
+    patched: 'a'
+spec:
+  template:
+    spec:
+      containers:
+      - name: foo
+        image: example/sidecar:b
\ No newline at end of file
diff --git a/kyaml/fn/framework/patchtestdata/namespaceselector/input.yaml b/kyaml/fn/framework/patchtestdata/namespaceselector/input.yaml
new file mode 100644
index 000000000..c48080aa9
--- /dev/null
+++ b/kyaml/fn/framework/patchtestdata/namespaceselector/input.yaml
@@ -0,0 +1,17 @@
+# Copyright 2019 The Kubernetes Authors.
+# SPDX-License-Identifier: Apache-2.0
+
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-1
+  annotations:
+    baz: foo
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: test-2
+  namespace: test
+  annotations:
+    foo: bar