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helm/pkg/engine/engine_test.go

1303 lines
36 KiB

/*
Copyright The Helm Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package engine
import (
"fmt"
"path"
"strings"
"sync"
"testing"
"text/template"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/client-go/dynamic"
"k8s.io/client-go/dynamic/fake"
"helm.sh/helm/v3/pkg/chart"
"helm.sh/helm/v3/pkg/chartutil"
)
func TestSortTemplates(t *testing.T) {
tpls := map[string]renderable{
"/mychart/templates/foo.tpl": {},
"/mychart/templates/charts/foo/charts/bar/templates/foo.tpl": {},
"/mychart/templates/bar.tpl": {},
"/mychart/templates/charts/foo/templates/bar.tpl": {},
"/mychart/templates/_foo.tpl": {},
"/mychart/templates/charts/foo/templates/foo.tpl": {},
"/mychart/templates/charts/bar/templates/foo.tpl": {},
}
got := sortTemplates(tpls)
if len(got) != len(tpls) {
t.Fatal("Sorted results are missing templates")
}
expect := []string{
"/mychart/templates/charts/foo/charts/bar/templates/foo.tpl",
"/mychart/templates/charts/foo/templates/foo.tpl",
"/mychart/templates/charts/foo/templates/bar.tpl",
"/mychart/templates/charts/bar/templates/foo.tpl",
"/mychart/templates/foo.tpl",
"/mychart/templates/bar.tpl",
"/mychart/templates/_foo.tpl",
}
for i, e := range expect {
if got[i] != e {
t.Fatalf("\n\tExp:\n%s\n\tGot:\n%s",
strings.Join(expect, "\n"),
strings.Join(got, "\n"),
)
}
}
}
func TestFuncMap(t *testing.T) {
fns := funcMap()
forbidden := []string{"env", "expandenv"}
for _, f := range forbidden {
if _, ok := fns[f]; ok {
t.Errorf("Forbidden function %s exists in FuncMap.", f)
}
}
// Test for Engine-specific template functions.
expect := []string{"include", "required", "tpl", "toYaml", "fromYaml", "toToml", "toJson", "fromJson", "lookup"}
for _, f := range expect {
if _, ok := fns[f]; !ok {
t.Errorf("Expected add-on function %q", f)
}
}
}
func TestRender(t *testing.T) {
c := &chart.Chart{
Metadata: &chart.Metadata{
Name: "moby",
Version: "1.2.3",
},
Templates: []*chart.File{
{Name: "templates/test1", Data: []byte("{{.Values.outer | title }} {{.Values.inner | title}}")},
{Name: "templates/test2", Data: []byte("{{.Values.global.callme | lower }}")},
{Name: "templates/test3", Data: []byte("{{.noValue}}")},
{Name: "templates/test4", Data: []byte("{{toJson .Values}}")},
{Name: "templates/test5", Data: []byte("{{getHostByName \"helm.sh\"}}")},
},
Values: map[string]interface{}{"outer": "DEFAULT", "inner": "DEFAULT"},
}
vals := map[string]interface{}{
"Values": map[string]interface{}{
"outer": "spouter",
"inner": "inn",
"global": map[string]interface{}{
"callme": "Ishmael",
},
},
}
v, err := chartutil.CoalesceValues(c, vals)
if err != nil {
t.Fatalf("Failed to coalesce values: %s", err)
}
out, err := Render(c, v)
if err != nil {
t.Errorf("Failed to render templates: %s", err)
}
expect := map[string]string{
"moby/templates/test1": "Spouter Inn",
"moby/templates/test2": "ishmael",
"moby/templates/test3": "",
"moby/templates/test4": `{"global":{"callme":"Ishmael"},"inner":"inn","outer":"spouter"}`,
"moby/templates/test5": "",
}
for name, data := range expect {
if out[name] != data {
t.Errorf("Expected %q, got %q", data, out[name])
}
}
}
func TestRenderRefsOrdering(t *testing.T) {
parentChart := &chart.Chart{
Metadata: &chart.Metadata{
Name: "parent",
Version: "1.2.3",
},
Templates: []*chart.File{
{Name: "templates/_helpers.tpl", Data: []byte(`{{- define "test" -}}parent value{{- end -}}`)},
{Name: "templates/test.yaml", Data: []byte(`{{ tpl "{{ include \"test\" . }}" . }}`)},
},
}
childChart := &chart.Chart{
Metadata: &chart.Metadata{
Name: "child",
Version: "1.2.3",
},
Templates: []*chart.File{
{Name: "templates/_helpers.tpl", Data: []byte(`{{- define "test" -}}child value{{- end -}}`)},
},
}
parentChart.AddDependency(childChart)
expect := map[string]string{
"parent/templates/test.yaml": "parent value",
}
for i := 0; i < 100; i++ {
out, err := Render(parentChart, chartutil.Values{})
if err != nil {
t.Fatalf("Failed to render templates: %s", err)
}
for name, data := range expect {
if out[name] != data {
chore: Spelling (#9410) * spelling: annotate Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: asserts Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: behavior Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: binary Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: contain Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: copied Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: dependency Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: depending Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: deprecated Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: doesn't Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: donot Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: github Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: inputting Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: iteration Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: jabberwocky Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: kubernetes Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: length Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: mismatch Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: multiple Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: nonexistent Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: outputs Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: panicking Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: plugins Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: parsing Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: porthos Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: regular Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: resource Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: repositories Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: something Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: strict Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: string Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: unknown Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>
4 years ago
t.Fatalf("Expected %q, got %q (iteration %d)", data, out[name], i+1)
}
}
}
}
func TestRenderInternals(t *testing.T) {
// Test the internals of the rendering tool.
vals := chartutil.Values{"Name": "one", "Value": "two"}
tpls := map[string]renderable{
"one": {tpl: `Hello {{title .Name}}`, vals: vals},
"two": {tpl: `Goodbye {{upper .Value}}`, vals: vals},
// Test whether a template can reliably reference another template
// without regard for ordering.
"three": {tpl: `{{template "two" dict "Value" "three"}}`, vals: vals},
}
out, err := new(Engine).render(tpls)
if err != nil {
t.Fatalf("Failed template rendering: %s", err)
}
if len(out) != 3 {
t.Fatalf("Expected 3 templates, got %d", len(out))
}
if out["one"] != "Hello One" {
t.Errorf("Expected 'Hello One', got %q", out["one"])
}
if out["two"] != "Goodbye TWO" {
t.Errorf("Expected 'Goodbye TWO'. got %q", out["two"])
}
if out["three"] != "Goodbye THREE" {
t.Errorf("Expected 'Goodbye THREE'. got %q", out["two"])
}
}
func TestRenderWithDNS(t *testing.T) {
c := &chart.Chart{
Metadata: &chart.Metadata{
Name: "moby",
Version: "1.2.3",
},
Templates: []*chart.File{
{Name: "templates/test1", Data: []byte("{{getHostByName \"helm.sh\"}}")},
},
Values: map[string]interface{}{},
}
vals := map[string]interface{}{
"Values": map[string]interface{}{},
}
v, err := chartutil.CoalesceValues(c, vals)
if err != nil {
t.Fatalf("Failed to coalesce values: %s", err)
}
var e Engine
e.EnableDNS = true
out, err := e.Render(c, v)
if err != nil {
t.Errorf("Failed to render templates: %s", err)
}
for _, val := range c.Templates {
fp := path.Join("moby", val.Name)
if out[fp] == "" {
t.Errorf("Expected IP address, got %q", out[fp])
}
}
}
type kindProps struct {
shouldErr error
gvr schema.GroupVersionResource
namespaced bool
}
type testClientProvider struct {
t *testing.T
scheme map[string]kindProps
objects []runtime.Object
}
func (p *testClientProvider) GetClientFor(apiVersion, kind string) (dynamic.NamespaceableResourceInterface, bool, error) {
props := p.scheme[path.Join(apiVersion, kind)]
if props.shouldErr != nil {
return nil, false, props.shouldErr
}
return fake.NewSimpleDynamicClient(runtime.NewScheme(), p.objects...).Resource(props.gvr), props.namespaced, nil
}
var _ ClientProvider = &testClientProvider{}
// makeUnstructured is a convenience function for single-line creation of Unstructured objects.
func makeUnstructured(apiVersion, kind, name, namespace string) *unstructured.Unstructured {
ret := &unstructured.Unstructured{Object: map[string]interface{}{
"apiVersion": apiVersion,
"kind": kind,
"metadata": map[string]interface{}{
"name": name,
},
}}
if namespace != "" {
ret.Object["metadata"].(map[string]interface{})["namespace"] = namespace
}
return ret
}
func TestRenderWithClientProvider(t *testing.T) {
provider := &testClientProvider{
t: t,
scheme: map[string]kindProps{
"v1/Namespace": {
gvr: schema.GroupVersionResource{
Version: "v1",
Resource: "namespaces",
},
},
"v1/Pod": {
gvr: schema.GroupVersionResource{
Version: "v1",
Resource: "pods",
},
namespaced: true,
},
},
objects: []runtime.Object{
makeUnstructured("v1", "Namespace", "default", ""),
makeUnstructured("v1", "Pod", "pod1", "default"),
makeUnstructured("v1", "Pod", "pod2", "ns1"),
makeUnstructured("v1", "Pod", "pod3", "ns1"),
},
}
type testCase struct {
template string
output string
}
cases := map[string]testCase{
"ns-single": {
template: `{{ (lookup "v1" "Namespace" "" "default").metadata.name }}`,
output: "default",
},
"ns-list": {
template: `{{ (lookup "v1" "Namespace" "" "").items | len }}`,
output: "1",
},
"ns-missing": {
template: `{{ (lookup "v1" "Namespace" "" "absent") }}`,
output: "map[]",
},
"pod-single": {
template: `{{ (lookup "v1" "Pod" "default" "pod1").metadata.name }}`,
output: "pod1",
},
"pod-list": {
template: `{{ (lookup "v1" "Pod" "ns1" "").items | len }}`,
output: "2",
},
"pod-all": {
template: `{{ (lookup "v1" "Pod" "" "").items | len }}`,
output: "3",
},
"pod-missing": {
template: `{{ (lookup "v1" "Pod" "" "ns2") }}`,
output: "map[]",
},
}
c := &chart.Chart{
Metadata: &chart.Metadata{
Name: "moby",
Version: "1.2.3",
},
Values: map[string]interface{}{},
}
for name, exp := range cases {
c.Templates = append(c.Templates, &chart.File{
Name: path.Join("templates", name),
Data: []byte(exp.template),
})
}
vals := map[string]interface{}{
"Values": map[string]interface{}{},
}
v, err := chartutil.CoalesceValues(c, vals)
if err != nil {
t.Fatalf("Failed to coalesce values: %s", err)
}
out, err := RenderWithClientProvider(c, v, provider)
if err != nil {
t.Errorf("Failed to render templates: %s", err)
}
for name, want := range cases {
t.Run(name, func(t *testing.T) {
key := path.Join("moby/templates", name)
if out[key] != want.output {
t.Errorf("Expected %q, got %q", want, out[key])
}
})
}
}
func TestRenderWithClientProvider_error(t *testing.T) {
c := &chart.Chart{
Metadata: &chart.Metadata{
Name: "moby",
Version: "1.2.3",
},
Templates: []*chart.File{
{Name: "templates/error", Data: []byte(`{{ lookup "v1" "Error" "" "" }}`)},
},
Values: map[string]interface{}{},
}
vals := map[string]interface{}{
"Values": map[string]interface{}{},
}
v, err := chartutil.CoalesceValues(c, vals)
if err != nil {
t.Fatalf("Failed to coalesce values: %s", err)
}
provider := &testClientProvider{
t: t,
scheme: map[string]kindProps{
"v1/Error": {
shouldErr: fmt.Errorf("kaboom"),
},
},
}
_, err = RenderWithClientProvider(c, v, provider)
if err == nil || !strings.Contains(err.Error(), "kaboom") {
t.Errorf("Expected error from client provider when rendering, got %q", err)
}
}
func TestParallelRenderInternals(t *testing.T) {
// Make sure that we can use one Engine to run parallel template renders.
e := new(Engine)
var wg sync.WaitGroup
for i := 0; i < 20; i++ {
wg.Add(1)
go func(i int) {
tt := fmt.Sprintf("expect-%d", i)
tpls := map[string]renderable{
"t": {
tpl: `{{.val}}`,
vals: map[string]interface{}{"val": tt},
},
}
out, err := e.render(tpls)
if err != nil {
t.Errorf("Failed to render %s: %s", tt, err)
}
if out["t"] != tt {
t.Errorf("Expected %q, got %q", tt, out["t"])
}
wg.Done()
}(i)
}
wg.Wait()
}
func TestParseErrors(t *testing.T) {
vals := chartutil.Values{"Values": map[string]interface{}{}}
tplsUndefinedFunction := map[string]renderable{
"undefined_function": {tpl: `{{foo}}`, vals: vals},
}
_, err := new(Engine).render(tplsUndefinedFunction)
if err == nil {
t.Fatalf("Expected failures while rendering: %s", err)
}
expected := `parse error at (undefined_function:1): function "foo" not defined`
if err.Error() != expected {
t.Errorf("Expected '%s', got %q", expected, err.Error())
}
}
func TestExecErrors(t *testing.T) {
vals := chartutil.Values{"Values": map[string]interface{}{}}
cases := []struct {
name string
tpls map[string]renderable
expected string
}{
{
name: "MissingRequired",
tpls: map[string]renderable{
"missing_required": {tpl: `{{required "foo is required" .Values.foo}}`, vals: vals},
},
expected: `execution error at (missing_required:1:2): foo is required`,
},
{
name: "MissingRequiredWithColons",
tpls: map[string]renderable{
"missing_required_with_colons": {tpl: `{{required ":this: message: has many: colons:" .Values.foo}}`, vals: vals},
},
expected: `execution error at (missing_required_with_colons:1:2): :this: message: has many: colons:`,
},
{
name: "Issue6044",
tpls: map[string]renderable{
"issue6044": {
vals: vals,
tpl: `{{ $someEmptyValue := "" }}
{{ $myvar := "abc" }}
{{- required (printf "%s: something is missing" $myvar) $someEmptyValue | repeat 0 }}`,
},
},
expected: `execution error at (issue6044:3:4): abc: something is missing`,
},
{
name: "MissingRequiredWithNewlines",
tpls: map[string]renderable{
"issue9981": {tpl: `{{required "foo is required\nmore info after the break" .Values.foo}}`, vals: vals},
},
expected: `execution error at (issue9981:1:2): foo is required
more info after the break`,
},
{
name: "FailWithNewlines",
tpls: map[string]renderable{
"issue9981": {tpl: `{{fail "something is wrong\nlinebreak"}}`, vals: vals},
},
expected: `execution error at (issue9981:1:2): something is wrong
linebreak`,
},
}
for _, tt := range cases {
t.Run(tt.name, func(t *testing.T) {
_, err := new(Engine).render(tt.tpls)
if err == nil {
t.Fatalf("Expected failures while rendering: %s", err)
}
if err.Error() != tt.expected {
t.Errorf("Expected %q, got %q", tt.expected, err.Error())
}
})
}
}
func TestFailErrors(t *testing.T) {
vals := chartutil.Values{"Values": map[string]interface{}{}}
failtpl := `All your base are belong to us{{ fail "This is an error" }}`
tplsFailed := map[string]renderable{
"failtpl": {tpl: failtpl, vals: vals},
}
_, err := new(Engine).render(tplsFailed)
if err == nil {
t.Fatalf("Expected failures while rendering: %s", err)
}
expected := `execution error at (failtpl:1:33): This is an error`
if err.Error() != expected {
t.Errorf("Expected '%s', got %q", expected, err.Error())
}
var e Engine
e.LintMode = true
out, err := e.render(tplsFailed)
if err != nil {
t.Fatal(err)
}
expectStr := "All your base are belong to us"
if gotStr := out["failtpl"]; gotStr != expectStr {
t.Errorf("Expected %q, got %q (%v)", expectStr, gotStr, out)
}
}
func TestAllTemplates(t *testing.T) {
ch1 := &chart.Chart{
Metadata: &chart.Metadata{Name: "ch1"},
Templates: []*chart.File{
{Name: "templates/foo", Data: []byte("foo")},
{Name: "templates/bar", Data: []byte("bar")},
},
}
dep1 := &chart.Chart{
Metadata: &chart.Metadata{Name: "laboratory mice"},
Templates: []*chart.File{
{Name: "templates/pinky", Data: []byte("pinky")},
{Name: "templates/brain", Data: []byte("brain")},
},
}
ch1.AddDependency(dep1)
dep2 := &chart.Chart{
Metadata: &chart.Metadata{Name: "same thing we do every night"},
Templates: []*chart.File{
{Name: "templates/innermost", Data: []byte("innermost")},
},
}
dep1.AddDependency(dep2)
tpls := allTemplates(ch1, chartutil.Values{})
if len(tpls) != 5 {
t.Errorf("Expected 5 charts, got %d", len(tpls))
}
}
func TestChartValuesContainsIsRoot(t *testing.T) {
ch1 := &chart.Chart{
Metadata: &chart.Metadata{Name: "parent"},
Templates: []*chart.File{
{Name: "templates/isroot", Data: []byte("{{.Chart.IsRoot}}")},
},
}
dep1 := &chart.Chart{
Metadata: &chart.Metadata{Name: "child"},
Templates: []*chart.File{
{Name: "templates/isroot", Data: []byte("{{.Chart.IsRoot}}")},
},
}
ch1.AddDependency(dep1)
out, err := Render(ch1, chartutil.Values{})
if err != nil {
t.Fatalf("failed to render templates: %s", err)
}
expects := map[string]string{
"parent/charts/child/templates/isroot": "false",
"parent/templates/isroot": "true",
}
for file, expect := range expects {
if out[file] != expect {
t.Errorf("Expected %q, got %q", expect, out[file])
}
}
}
func TestRenderDependency(t *testing.T) {
deptpl := `{{define "myblock"}}World{{end}}`
toptpl := `Hello {{template "myblock"}}`
ch := &chart.Chart{
Metadata: &chart.Metadata{Name: "outerchart"},
Templates: []*chart.File{
{Name: "templates/outer", Data: []byte(toptpl)},
},
}
ch.AddDependency(&chart.Chart{
Metadata: &chart.Metadata{Name: "innerchart"},
Templates: []*chart.File{
{Name: "templates/inner", Data: []byte(deptpl)},
},
})
out, err := Render(ch, map[string]interface{}{})
if err != nil {
t.Fatalf("failed to render chart: %s", err)
}
if len(out) != 2 {
t.Errorf("Expected 2, got %d", len(out))
}
expect := "Hello World"
if out["outerchart/templates/outer"] != expect {
t.Errorf("Expected %q, got %q", expect, out["outer"])
}
}
func TestRenderNestedValues(t *testing.T) {
innerpath := "templates/inner.tpl"
outerpath := "templates/outer.tpl"
// Ensure namespacing rules are working.
deepestpath := "templates/inner.tpl"
checkrelease := "templates/release.tpl"
// Ensure subcharts scopes are working.
subchartspath := "templates/subcharts.tpl"
deepest := &chart.Chart{
Metadata: &chart.Metadata{Name: "deepest"},
Templates: []*chart.File{
{Name: deepestpath, Data: []byte(`And this same {{.Values.what}} that smiles {{.Values.global.when}}`)},
{Name: checkrelease, Data: []byte(`Tomorrow will be {{default "happy" .Release.Name }}`)},
},
Values: map[string]interface{}{"what": "milkshake", "where": "here"},
}
inner := &chart.Chart{
Metadata: &chart.Metadata{Name: "herrick"},
Templates: []*chart.File{
{Name: innerpath, Data: []byte(`Old {{.Values.who}} is still a-flyin'`)},
},
Values: map[string]interface{}{"who": "Robert", "what": "glasses"},
}
inner.AddDependency(deepest)
outer := &chart.Chart{
Metadata: &chart.Metadata{Name: "top"},
Templates: []*chart.File{
{Name: outerpath, Data: []byte(`Gather ye {{.Values.what}} while ye may`)},
{Name: subchartspath, Data: []byte(`The glorious Lamp of {{.Subcharts.herrick.Subcharts.deepest.Values.where}}, the {{.Subcharts.herrick.Values.what}}`)},
},
Values: map[string]interface{}{
"what": "stinkweed",
"who": "me",
"herrick": map[string]interface{}{
"who": "time",
"what": "Sun",
},
},
}
outer.AddDependency(inner)
injValues := map[string]interface{}{
"what": "rosebuds",
"herrick": map[string]interface{}{
"deepest": map[string]interface{}{
"what": "flower",
"where": "Heaven",
},
},
"global": map[string]interface{}{
"when": "to-day",
},
}
tmp, err := chartutil.CoalesceValues(outer, injValues)
if err != nil {
t.Fatalf("Failed to coalesce values: %s", err)
}
inject := chartutil.Values{
"Values": tmp,
"Chart": outer.Metadata,
"Release": chartutil.Values{
"Name": "dyin",
},
}
t.Logf("Calculated values: %v", inject)
out, err := Render(outer, inject)
if err != nil {
t.Fatalf("failed to render templates: %s", err)
}
fullouterpath := "top/" + outerpath
if out[fullouterpath] != "Gather ye rosebuds while ye may" {
t.Errorf("Unexpected outer: %q", out[fullouterpath])
}
fullinnerpath := "top/charts/herrick/" + innerpath
if out[fullinnerpath] != "Old time is still a-flyin'" {
t.Errorf("Unexpected inner: %q", out[fullinnerpath])
}
fulldeepestpath := "top/charts/herrick/charts/deepest/" + deepestpath
if out[fulldeepestpath] != "And this same flower that smiles to-day" {
t.Errorf("Unexpected deepest: %q", out[fulldeepestpath])
}
fullcheckrelease := "top/charts/herrick/charts/deepest/" + checkrelease
if out[fullcheckrelease] != "Tomorrow will be dyin" {
t.Errorf("Unexpected release: %q", out[fullcheckrelease])
}
fullchecksubcharts := "top/" + subchartspath
if out[fullchecksubcharts] != "The glorious Lamp of Heaven, the Sun" {
t.Errorf("Unexpected subcharts: %q", out[fullchecksubcharts])
}
}
func TestRenderBuiltinValues(t *testing.T) {
inner := &chart.Chart{
Metadata: &chart.Metadata{Name: "Latium"},
Templates: []*chart.File{
{Name: "templates/Lavinia", Data: []byte(`{{.Template.Name}}{{.Chart.Name}}{{.Release.Name}}`)},
{Name: "templates/From", Data: []byte(`{{.Files.author | printf "%s"}} {{.Files.Get "book/title.txt"}}`)},
},
Files: []*chart.File{
{Name: "author", Data: []byte("Virgil")},
{Name: "book/title.txt", Data: []byte("Aeneid")},
},
}
outer := &chart.Chart{
Metadata: &chart.Metadata{Name: "Troy"},
Templates: []*chart.File{
{Name: "templates/Aeneas", Data: []byte(`{{.Template.Name}}{{.Chart.Name}}{{.Release.Name}}`)},
{Name: "templates/Amata", Data: []byte(`{{.Subcharts.Latium.Chart.Name}} {{.Subcharts.Latium.Files.author | printf "%s"}}`)},
},
}
outer.AddDependency(inner)
inject := chartutil.Values{
"Values": "",
"Chart": outer.Metadata,
"Release": chartutil.Values{
"Name": "Aeneid",
},
}
t.Logf("Calculated values: %v", outer)
out, err := Render(outer, inject)
if err != nil {
t.Fatalf("failed to render templates: %s", err)
}
expects := map[string]string{
"Troy/charts/Latium/templates/Lavinia": "Troy/charts/Latium/templates/LaviniaLatiumAeneid",
"Troy/templates/Aeneas": "Troy/templates/AeneasTroyAeneid",
"Troy/templates/Amata": "Latium Virgil",
"Troy/charts/Latium/templates/From": "Virgil Aeneid",
}
for file, expect := range expects {
if out[file] != expect {
t.Errorf("Expected %q, got %q", expect, out[file])
}
}
}
func TestAlterFuncMap_include(t *testing.T) {
c := &chart.Chart{
Metadata: &chart.Metadata{Name: "conrad"},
Templates: []*chart.File{
{Name: "templates/quote", Data: []byte(`{{include "conrad/templates/_partial" . | indent 2}} dead.`)},
{Name: "templates/_partial", Data: []byte(`{{.Release.Name}} - he`)},
},
}
// Check nested reference in include FuncMap
d := &chart.Chart{
Metadata: &chart.Metadata{Name: "nested"},
Templates: []*chart.File{
{Name: "templates/quote", Data: []byte(`{{include "nested/templates/quote" . | indent 2}} dead.`)},
{Name: "templates/_partial", Data: []byte(`{{.Release.Name}} - he`)},
},
}
v := chartutil.Values{
"Values": "",
"Chart": c.Metadata,
"Release": chartutil.Values{
"Name": "Mistah Kurtz",
},
}
out, err := Render(c, v)
if err != nil {
t.Fatal(err)
}
expect := " Mistah Kurtz - he dead."
if got := out["conrad/templates/quote"]; got != expect {
t.Errorf("Expected %q, got %q (%v)", expect, got, out)
}
_, err = Render(d, v)
expectErrName := "nested/templates/quote"
if err == nil {
t.Errorf("Expected err of nested reference name: %v", expectErrName)
}
}
func TestAlterFuncMap_require(t *testing.T) {
c := &chart.Chart{
Metadata: &chart.Metadata{Name: "conan"},
Templates: []*chart.File{
{Name: "templates/quote", Data: []byte(`All your base are belong to {{ required "A valid 'who' is required" .Values.who }}`)},
{Name: "templates/bases", Data: []byte(`All {{ required "A valid 'bases' is required" .Values.bases }} of them!`)},
},
}
v := chartutil.Values{
"Values": chartutil.Values{
"who": "us",
"bases": 2,
},
"Chart": c.Metadata,
"Release": chartutil.Values{
"Name": "That 90s meme",
},
}
out, err := Render(c, v)
if err != nil {
t.Fatal(err)
}
expectStr := "All your base are belong to us"
if gotStr := out["conan/templates/quote"]; gotStr != expectStr {
t.Errorf("Expected %q, got %q (%v)", expectStr, gotStr, out)
}
expectNum := "All 2 of them!"
if gotNum := out["conan/templates/bases"]; gotNum != expectNum {
t.Errorf("Expected %q, got %q (%v)", expectNum, gotNum, out)
}
// test required without passing in needed values with lint mode on
// verifies lint replaces required with an empty string (should not fail)
lintValues := chartutil.Values{
"Values": chartutil.Values{
"who": "us",
},
"Chart": c.Metadata,
"Release": chartutil.Values{
"Name": "That 90s meme",
},
}
var e Engine
e.LintMode = true
out, err = e.Render(c, lintValues)
if err != nil {
t.Fatal(err)
}
expectStr = "All your base are belong to us"
if gotStr := out["conan/templates/quote"]; gotStr != expectStr {
t.Errorf("Expected %q, got %q (%v)", expectStr, gotStr, out)
}
expectNum = "All of them!"
if gotNum := out["conan/templates/bases"]; gotNum != expectNum {
t.Errorf("Expected %q, got %q (%v)", expectNum, gotNum, out)
}
}
func TestAlterFuncMap_tpl(t *testing.T) {
c := &chart.Chart{
Metadata: &chart.Metadata{Name: "TplFunction"},
Templates: []*chart.File{
{Name: "templates/base", Data: []byte(`Evaluate tpl {{tpl "Value: {{ .Values.value}}" .}}`)},
},
}
v := chartutil.Values{
"Values": chartutil.Values{
"value": "myvalue",
},
"Chart": c.Metadata,
"Release": chartutil.Values{
"Name": "TestRelease",
},
}
out, err := Render(c, v)
if err != nil {
t.Fatal(err)
}
expect := "Evaluate tpl Value: myvalue"
if got := out["TplFunction/templates/base"]; got != expect {
t.Errorf("Expected %q, got %q (%v)", expect, got, out)
}
}
func TestAlterFuncMap_tplfunc(t *testing.T) {
c := &chart.Chart{
Metadata: &chart.Metadata{Name: "TplFunction"},
Templates: []*chart.File{
{Name: "templates/base", Data: []byte(`Evaluate tpl {{tpl "Value: {{ .Values.value | quote}}" .}}`)},
},
}
v := chartutil.Values{
"Values": chartutil.Values{
"value": "myvalue",
},
"Chart": c.Metadata,
"Release": chartutil.Values{
"Name": "TestRelease",
},
}
out, err := Render(c, v)
if err != nil {
t.Fatal(err)
}
expect := "Evaluate tpl Value: \"myvalue\""
if got := out["TplFunction/templates/base"]; got != expect {
t.Errorf("Expected %q, got %q (%v)", expect, got, out)
}
}
func TestAlterFuncMap_tplinclude(t *testing.T) {
c := &chart.Chart{
Metadata: &chart.Metadata{Name: "TplFunction"},
Templates: []*chart.File{
{Name: "templates/base", Data: []byte(`{{ tpl "{{include ` + "`" + `TplFunction/templates/_partial` + "`" + ` . | quote }}" .}}`)},
{Name: "templates/_partial", Data: []byte(`{{.Template.Name}}`)},
},
}
v := chartutil.Values{
"Values": chartutil.Values{
"value": "myvalue",
},
"Chart": c.Metadata,
"Release": chartutil.Values{
"Name": "TestRelease",
},
}
out, err := Render(c, v)
if err != nil {
t.Fatal(err)
}
expect := "\"TplFunction/templates/base\""
if got := out["TplFunction/templates/base"]; got != expect {
t.Errorf("Expected %q, got %q (%v)", expect, got, out)
}
}
func TestRenderRecursionLimit(t *testing.T) {
// endless recursion should produce an error
c := &chart.Chart{
Metadata: &chart.Metadata{Name: "bad"},
Templates: []*chart.File{
{Name: "templates/base", Data: []byte(`{{include "recursion" . }}`)},
{Name: "templates/recursion", Data: []byte(`{{define "recursion"}}{{include "recursion" . }}{{end}}`)},
},
}
v := chartutil.Values{
"Values": "",
"Chart": c.Metadata,
"Release": chartutil.Values{
"Name": "TestRelease",
},
}
expectErr := "rendering template has a nested reference name: recursion: unable to execute template"
_, err := Render(c, v)
if err == nil || !strings.HasSuffix(err.Error(), expectErr) {
t.Errorf("Expected err with suffix: %s", expectErr)
}
// calling the same function many times is ok
times := 4000
phrase := "All work and no play makes Jack a dull boy"
printFunc := `{{define "overlook"}}{{printf "` + phrase + `\n"}}{{end}}`
var repeatedIncl string
for i := 0; i < times; i++ {
repeatedIncl += `{{include "overlook" . }}`
}
d := &chart.Chart{
Metadata: &chart.Metadata{Name: "overlook"},
Templates: []*chart.File{
{Name: "templates/quote", Data: []byte(repeatedIncl)},
{Name: "templates/_function", Data: []byte(printFunc)},
},
}
out, err := Render(d, v)
if err != nil {
t.Fatal(err)
}
var expect string
for i := 0; i < times; i++ {
expect += phrase + "\n"
}
if got := out["overlook/templates/quote"]; got != expect {
t.Errorf("Expected %q, got %q (%v)", expect, got, out)
}
}
func TestRenderLoadTemplateForTplFromFile(t *testing.T) {
c := &chart.Chart{
Metadata: &chart.Metadata{Name: "TplLoadFromFile"},
Templates: []*chart.File{
{Name: "templates/base", Data: []byte(`{{ tpl (.Files.Get .Values.filename) . }}`)},
{Name: "templates/_function", Data: []byte(`{{define "test-function"}}test-function{{end}}`)},
},
Files: []*chart.File{
{Name: "test", Data: []byte(`{{ tpl (.Files.Get .Values.filename2) .}}`)},
{Name: "test2", Data: []byte(`{{include "test-function" .}}{{define "nested-define"}}nested-define-content{{end}} {{include "nested-define" .}}`)},
},
}
v := chartutil.Values{
"Values": chartutil.Values{
"filename": "test",
"filename2": "test2",
},
"Chart": c.Metadata,
"Release": chartutil.Values{
"Name": "TestRelease",
},
}
out, err := Render(c, v)
if err != nil {
t.Fatal(err)
}
expect := "test-function nested-define-content"
if got := out["TplLoadFromFile/templates/base"]; got != expect {
t.Fatalf("Expected %q, got %q", expect, got)
}
}
func TestRenderTplEmpty(t *testing.T) {
c := &chart.Chart{
Metadata: &chart.Metadata{Name: "TplEmpty"},
Templates: []*chart.File{
{Name: "templates/empty-string", Data: []byte(`{{tpl "" .}}`)},
{Name: "templates/empty-action", Data: []byte(`{{tpl "{{ \"\"}}" .}}`)},
{Name: "templates/only-defines", Data: []byte(`{{tpl "{{define \"not-invoked\"}}not-rendered{{end}}" .}}`)},
},
}
v := chartutil.Values{
"Chart": c.Metadata,
"Release": chartutil.Values{
"Name": "TestRelease",
},
}
out, err := Render(c, v)
if err != nil {
t.Fatal(err)
}
expects := map[string]string{
"TplEmpty/templates/empty-string": "",
"TplEmpty/templates/empty-action": "",
"TplEmpty/templates/only-defines": "",
}
for file, expect := range expects {
if out[file] != expect {
t.Errorf("Expected %q, got %q", expect, out[file])
}
}
}
func TestRenderTplTemplateNames(t *testing.T) {
// .Template.BasePath and .Name make it through
c := &chart.Chart{
Metadata: &chart.Metadata{Name: "TplTemplateNames"},
Templates: []*chart.File{
{Name: "templates/default-basepath", Data: []byte(`{{tpl "{{ .Template.BasePath }}" .}}`)},
{Name: "templates/default-name", Data: []byte(`{{tpl "{{ .Template.Name }}" .}}`)},
{Name: "templates/modified-basepath", Data: []byte(`{{tpl "{{ .Template.BasePath }}" .Values.dot}}`)},
{Name: "templates/modified-name", Data: []byte(`{{tpl "{{ .Template.Name }}" .Values.dot}}`)},
{Name: "templates/modified-field", Data: []byte(`{{tpl "{{ .Template.Field }}" .Values.dot}}`)},
},
}
v := chartutil.Values{
"Values": chartutil.Values{
"dot": chartutil.Values{
"Template": chartutil.Values{
"BasePath": "path/to/template",
"Name": "name-of-template",
"Field": "extra-field",
},
},
},
"Chart": c.Metadata,
"Release": chartutil.Values{
"Name": "TestRelease",
},
}
out, err := Render(c, v)
if err != nil {
t.Fatal(err)
}
expects := map[string]string{
"TplTemplateNames/templates/default-basepath": "TplTemplateNames/templates",
"TplTemplateNames/templates/default-name": "TplTemplateNames/templates/default-name",
"TplTemplateNames/templates/modified-basepath": "path/to/template",
"TplTemplateNames/templates/modified-name": "name-of-template",
"TplTemplateNames/templates/modified-field": "extra-field",
}
for file, expect := range expects {
if out[file] != expect {
t.Errorf("Expected %q, got %q", expect, out[file])
}
}
}
func TestRenderTplRedefines(t *testing.T) {
// Redefining a template inside 'tpl' does not affect the outer definition
c := &chart.Chart{
Metadata: &chart.Metadata{Name: "TplRedefines"},
Templates: []*chart.File{
{Name: "templates/_partials", Data: []byte(`{{define "partial"}}original-in-partial{{end}}`)},
{Name: "templates/partial", Data: []byte(
`before: {{include "partial" .}}\n{{tpl .Values.partialText .}}\nafter: {{include "partial" .}}`,
)},
{Name: "templates/manifest", Data: []byte(
`{{define "manifest"}}original-in-manifest{{end}}` +
`before: {{include "manifest" .}}\n{{tpl .Values.manifestText .}}\nafter: {{include "manifest" .}}`,
)},
{Name: "templates/manifest-only", Data: []byte(
`{{define "manifest-only"}}only-in-manifest{{end}}` +
`before: {{include "manifest-only" .}}\n{{tpl .Values.manifestOnlyText .}}\nafter: {{include "manifest-only" .}}`,
)},
{Name: "templates/nested", Data: []byte(
`{{define "nested"}}original-in-manifest{{end}}` +
`{{define "nested-outer"}}original-outer-in-manifest{{end}}` +
`before: {{include "nested" .}} {{include "nested-outer" .}}\n` +
`{{tpl .Values.nestedText .}}\n` +
`after: {{include "nested" .}} {{include "nested-outer" .}}`,
)},
},
}
v := chartutil.Values{
"Values": chartutil.Values{
"partialText": `{{define "partial"}}redefined-in-tpl{{end}}tpl: {{include "partial" .}}`,
"manifestText": `{{define "manifest"}}redefined-in-tpl{{end}}tpl: {{include "manifest" .}}`,
"manifestOnlyText": `tpl: {{include "manifest-only" .}}`,
"nestedText": `{{define "nested"}}redefined-in-tpl{{end}}` +
`{{define "nested-outer"}}redefined-outer-in-tpl{{end}}` +
`before-inner-tpl: {{include "nested" .}} {{include "nested-outer" . }}\n` +
`{{tpl .Values.innerText .}}\n` +
`after-inner-tpl: {{include "nested" .}} {{include "nested-outer" . }}`,
"innerText": `{{define "nested"}}redefined-in-inner-tpl{{end}}inner-tpl: {{include "nested" .}} {{include "nested-outer" . }}`,
},
"Chart": c.Metadata,
"Release": chartutil.Values{
"Name": "TestRelease",
},
}
out, err := Render(c, v)
if err != nil {
t.Fatal(err)
}
expects := map[string]string{
"TplRedefines/templates/partial": `before: original-in-partial\ntpl: redefined-in-tpl\nafter: original-in-partial`,
"TplRedefines/templates/manifest": `before: original-in-manifest\ntpl: redefined-in-tpl\nafter: original-in-manifest`,
"TplRedefines/templates/manifest-only": `before: only-in-manifest\ntpl: only-in-manifest\nafter: only-in-manifest`,
"TplRedefines/templates/nested": `before: original-in-manifest original-outer-in-manifest\n` +
`before-inner-tpl: redefined-in-tpl redefined-outer-in-tpl\n` +
`inner-tpl: redefined-in-inner-tpl redefined-outer-in-tpl\n` +
`after-inner-tpl: redefined-in-tpl redefined-outer-in-tpl\n` +
`after: original-in-manifest original-outer-in-manifest`,
}
for file, expect := range expects {
if out[file] != expect {
t.Errorf("Expected %q, got %q", expect, out[file])
}
}
}
func TestRenderTplMissingKey(t *testing.T) {
// Rendering a missing key results in empty/zero output.
c := &chart.Chart{
Metadata: &chart.Metadata{Name: "TplMissingKey"},
Templates: []*chart.File{
{Name: "templates/manifest", Data: []byte(
`missingValue: {{tpl "{{.Values.noSuchKey}}" .}}`,
)},
},
}
v := chartutil.Values{
"Values": chartutil.Values{},
"Chart": c.Metadata,
"Release": chartutil.Values{
"Name": "TestRelease",
},
}
out, err := Render(c, v)
if err != nil {
t.Fatal(err)
}
expects := map[string]string{
"TplMissingKey/templates/manifest": `missingValue: `,
}
for file, expect := range expects {
if out[file] != expect {
t.Errorf("Expected %q, got %q", expect, out[file])
}
}
}
func TestRenderTplMissingKeyString(t *testing.T) {
// Rendering a missing key results in error
c := &chart.Chart{
Metadata: &chart.Metadata{Name: "TplMissingKeyStrict"},
Templates: []*chart.File{
{Name: "templates/manifest", Data: []byte(
`missingValue: {{tpl "{{.Values.noSuchKey}}" .}}`,
)},
},
}
v := chartutil.Values{
"Values": chartutil.Values{},
"Chart": c.Metadata,
"Release": chartutil.Values{
"Name": "TestRelease",
},
}
e := new(Engine)
e.Strict = true
out, err := e.Render(c, v)
if err == nil {
t.Errorf("Expected error, got %v", out)
return
}
switch err.(type) {
case (template.ExecError):
errTxt := fmt.Sprint(err)
if !strings.Contains(errTxt, "noSuchKey") {
t.Errorf("Expected error to contain 'noSuchKey', got %s", errTxt)
}
default:
// Some unexpected error.
t.Fatal(err)
}
}