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Fix case issues with Params

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There are currently several Params and case related issues floating around in Hugo.

This is very confusing for users and one of the most common support questions on the forum.

And while there have been done some great leg work in Viper etc., this is of limited value since this and similar doesn't work:

`Params.myCamelCasedParam`

Hugo has control over all the template method invocations, and can take care of all the lower-casing of the map lookup keys.

But that doesn't help with direct template lookups of type `Site.Params.TWITTER_CONFIG.USER_ID`.

This commit solves that by doing some carefully crafted modifications of the templates' AST -- lowercasing the params keys.

This is low-level work, but it's not like the template API wil change -- and this is important enough to defend such "bit fiddling".

Tests are added for all the template engines: Go templates, Ace and Amber.

Fixes #2615
Fixes #1129
Fixes #2590
This commit is contained in:
Bjørn Erik Pedersen 2016-10-24 22:29:48 +02:00
parent a5b3b07657
commit e1da7cb320
8 changed files with 830 additions and 11 deletions
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1
.gitignore vendored
View file

@ -11,3 +11,4 @@ cover.out
.DS_Store
*~
vendor/*/
*.bench

289
hugolib/case_insensitive_test.go Normal file
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@ -0,0 +1,289 @@
// Copyright 2016 The Hugo Authors. All rights reserved.
//
// 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 hugolib
import (
"fmt"
"path/filepath"
"strings"
"testing"
)
var (
caseMixingSiteConfigTOML = `
Title = "In an Insensitive Mood"
DefaultContentLanguage = "nn"
defaultContentLanguageInSubdir = true
[Blackfriday]
AngledQuotes = true
HrefTargetBlank = true
[Params]
Search = true
Color = "green"
mood = "Happy"
[Params.Colors]
Blue = "blue"
Yellow = "yellow"
[Languages]
[Languages.nn]
title = "Nynorsk title"
languageName = "Nynorsk"
weight = 1
[Languages.en]
TITLE = "English title"
LanguageName = "English"
Mood = "Thoughtful"
Weight = 2
COLOR = "Pink"
[Languages.en.blackfriday]
angledQuotes = false
hrefTargetBlank = false
[Languages.en.Colors]
BLUE = "blues"
yellow = "golden"
`
caseMixingPage1En = `
---
TITLE: Page1 En Translation
BlackFriday:
AngledQuotes: false
Color: "black"
Search: true
mooD: "sad and lonely"
ColorS:
Blue: "bluesy"
Yellow: "sunny"
---
# "Hi"
{{< shortcode >}}
`
caseMixingPage1 = `
---
titLe: Side 1
blackFriday:
angledQuotes: true
color: "red"
search: false
MooD: "sad"
COLORS:
blue: "heavenly"
yelloW: "Sunny"
---
# "Hi"
{{< shortcode >}}
`
caseMixingPage2 = `
---
TITLE: Page2 Title
BlackFriday:
AngledQuotes: false
Color: "black"
search: true
MooD: "moody"
ColorS:
Blue: "sky"
YELLOW: "flower"
---
# Hi
{{< shortcode >}}
`
)
func caseMixingTestsWriteCommonSources(t *testing.T) {
writeSource(t, filepath.Join("content", "sect1", "page1.md"), caseMixingPage1)
writeSource(t, filepath.Join("content", "sect2", "page2.md"), caseMixingPage2)
writeSource(t, filepath.Join("content", "sect1", "page1.en.md"), caseMixingPage1En)
writeSource(t, "layouts/shortcodes/shortcode.html", `
Shortcode Page: {{ .Page.Params.COLOR }}|{{ .Page.Params.Colors.Blue }}
Shortcode Site: {{ .Page.Site.Params.COLOR }}|{{ .Site.Params.COLORS.YELLOW }}
`)
writeSource(t, "layouts/partials/partial.html", `
Partial Page: {{ .Params.COLOR }}|{{ .Params.Colors.Blue }}
Partial Site: {{ .Site.Params.COLOR }}|{{ .Site.Params.COLORS.YELLOW }}
`)
writeSource(t, "config.toml", caseMixingSiteConfigTOML)
}
func TestCaseInsensitiveConfigurationVariations(t *testing.T) {
// See issues 2615, 1129, 2590 and maybe some others
// Also see 2598
//
// Viper is now, at least for the Hugo part, case insensitive
// So we need tests for all of it, with needed adjustments on the Hugo side.
// Not sure what that will be. Let us see.
// So all the below with case variations:
// config: regular fields, blackfriday config, param with nested map
// language: new and overridden values, in regular fields and nested paramsmap
// page frontmatter: regular fields, blackfriday config, param with nested map
testCommonResetState()
caseMixingTestsWriteCommonSources(t)
writeSource(t, filepath.Join("layouts", "_default", "baseof.html"), `
Block Page Colors: {{ .Params.COLOR }}|{{ .Params.Colors.Blue }}
{{ block "main" . }}default{{end}}`)
writeSource(t, filepath.Join("layouts", "sect2", "single.html"), `
{{ define "main"}}
Page Colors: {{ .Params.CoLOR }}|{{ .Params.Colors.Blue }}
Site Colors: {{ .Site.Params.COlOR }}|{{ .Site.Params.COLORS.YELLOW }}
{{ .Content }}
{{ partial "partial.html" . }}
{{ end }}
`)
writeSource(t, filepath.Join("layouts", "_default", "single.html"), `
Page Title: {{ .Title }}
Site Title: {{ .Site.Title }}
Site Lang Mood: {{ .Site.Language.Params.MOoD }}
Page Colors: {{ .Params.COLOR }}|{{ .Params.Colors.Blue }}
Site Colors: {{ .Site.Params.COLOR }}|{{ .Site.Params.COLORS.YELLOW }}
{{ .Content }}
{{ partial "partial.html" . }}
`)
if err := LoadGlobalConfig("", "config.toml"); err != nil {
t.Fatalf("Failed to load config: %s", err)
}
sites, err := NewHugoSitesFromConfiguration()
if err != nil {
t.Fatalf("Failed to create sites: %s", err)
}
err = sites.Build(BuildCfg{})
if err != nil {
t.Fatalf("Failed to build sites: %s", err)
}
assertFileContent(t, filepath.Join("public", "nn", "sect1", "page1", "index.html"), true,
"Page Colors: red|heavenly",
"Site Colors: green|yellow",
"Site Lang Mood: Happy",
"Shortcode Page: red|heavenly",
"Shortcode Site: green|yellow",
"Partial Page: red|heavenly",
"Partial Site: green|yellow",
"Page Title: Side 1",
"Site Title: Nynorsk title",
"&laquo;Hi&raquo;", // angled quotes
)
assertFileContent(t, filepath.Join("public", "en", "sect1", "page1", "index.html"), true,
"Site Colors: Pink|golden",
"Page Colors: black|bluesy",
"Site Lang Mood: Thoughtful",
"Page Title: Page1 En Translation",
"Site Title: English title",
"&ldquo;Hi&rdquo;",
)
assertFileContent(t, filepath.Join("public", "nn", "sect2", "page2", "index.html"), true,
"Page Colors: black|sky",
"Site Colors: green|yellow",
"Shortcode Page: black|sky",
"Block Page Colors: black|sky",
"Partial Page: black|sky",
"Partial Site: green|yellow",
)
}
func TestCaseInsensitiveConfigurationForAllTemplateEngines(t *testing.T) {
noOp := func(s string) string {
return s
}
amberFixer := func(s string) string {
fixed := strings.Replace(s, "{{ .Site.Params", "{{ Site.Params", -1)
fixed = strings.Replace(fixed, "{{ .Params", "{{ Params", -1)
fixed = strings.Replace(fixed, ".Content", "Content", -1)
fixed = strings.Replace(fixed, "{{", "#{", -1)
fixed = strings.Replace(fixed, "}}", "}", -1)
return fixed
}
for _, config := range []struct {
suffix string
templateFixer func(s string) string
}{
{"amber", amberFixer},
{"html", noOp},
{"ace", noOp},
} {
doTestCaseInsensitiveConfigurationForTemplateEngine(t, config.suffix, config.templateFixer)
}
}
func doTestCaseInsensitiveConfigurationForTemplateEngine(t *testing.T, suffix string, templateFixer func(s string) string) {
testCommonResetState()
caseMixingTestsWriteCommonSources(t)
t.Log("Testing", suffix)
templTemplate := `
p
|
| Page Colors: {{ .Params.CoLOR }}|{{ .Params.Colors.Blue }}
| Site Colors: {{ .Site.Params.COlOR }}|{{ .Site.Params.COLORS.YELLOW }}
| {{ .Content }}
`
templ := templateFixer(templTemplate)
t.Log(templ)
writeSource(t, filepath.Join("layouts", "_default", fmt.Sprintf("single.%s", suffix)), templ)
if err := LoadGlobalConfig("", "config.toml"); err != nil {
t.Fatalf("Failed to load config: %s", err)
}
sites, err := NewHugoSitesFromConfiguration()
if err != nil {
t.Fatalf("Failed to create sites: %s", err)
}
err = sites.Build(BuildCfg{})
if err != nil {
t.Fatalf("Failed to build sites: %s", err)
}
assertFileContent(t, filepath.Join("public", "nn", "sect1", "page1", "index.html"), true,
"Page Colors: red|heavenly",
"Site Colors: green|yellow",
"Shortcode Page: red|heavenly",
"Shortcode Site: green|yellow",
)
}

3
hugolib/page.go
View file

@ -901,6 +901,9 @@ func (p *Page) update(f interface{}) error {
return fmt.Errorf("no metadata found")
}
m := f.(map[string]interface{})
// Needed for case insensitive fetching of params values
helpers.ToLowerMap(m)
var err error
var draft, published, isCJKLanguage *bool
for k, v := range m {

2
hugolib/site.go
View file

@ -1805,7 +1805,7 @@ func (s *Site) renderForLayouts(name string, d interface{}, w io.Writer, layouts
if err := s.renderThing(d, layout, w); err != nil {
// Behavior here should be dependent on if running in server or watch mode.
distinctErrorLogger.Printf("Error while rendering %s: %v", name, err)
distinctErrorLogger.Printf("Error while rendering %s: %.60s…", name, err)
if !s.running() && !testMode {
// TODO(bep) check if this can be propagated
os.Exit(-1)

2
hugolib/site_render.go
View file

@ -58,7 +58,7 @@ func (s *Site) renderPages() error {
err := <-errs
if err != nil {
return fmt.Errorf("Error(s) rendering pages: %s", err)
return fmt.Errorf("Error(s) rendering pages: %.60s…", err)
}
return nil
}

29
tpl/template.go
View file

@ -213,11 +213,16 @@ func (t *GoHTMLTemplate) AddInternalShortcode(name, content string) error {
func (t *GoHTMLTemplate) AddTemplate(name, tpl string) error {
t.checkState()
_, err := t.New(name).Parse(tpl)
templ, err := t.New(name).Parse(tpl)
if err != nil {
t.errors = append(t.errors, &templateErr{name: name, err: err})
return err
}
return err
if err := applyTemplateTransformers(templ); err != nil {
return err
}
return nil
}
func (t *GoHTMLTemplate) AddTemplateFileWithMaster(name, overlayFilename, masterFilename string) error {
@ -264,7 +269,11 @@ func (t *GoHTMLTemplate) AddTemplateFileWithMaster(name, overlayFilename, master
// The extra lookup is a workaround, see
// * https://github.com/golang/go/issues/16101
// * https://github.com/spf13/hugo/issues/2549
t.overlays[name] = overlayTpl.Lookup(overlayTpl.Name())
overlayTpl = overlayTpl.Lookup(overlayTpl.Name())
if err := applyTemplateTransformers(overlayTpl); err != nil {
return err
}
t.overlays[name] = overlayTpl
}
return err
@ -291,11 +300,12 @@ func (t *GoHTMLTemplate) AddAceTemplate(name, basePath, innerPath string, baseCo
t.errors = append(t.errors, &templateErr{name: name, err: err})
return err
}
_, err = ace.CompileResultWithTemplate(t.New(name), parsed, nil)
templ, err := ace.CompileResultWithTemplate(t.New(name), parsed, nil)
if err != nil {
t.errors = append(t.errors, &templateErr{name: name, err: err})
return err
}
return err
return applyTemplateTransformers(templ)
}
func (t *GoHTMLTemplate) AddTemplateFile(name, baseTemplatePath, path string) error {
@ -317,9 +327,12 @@ func (t *GoHTMLTemplate) AddTemplateFile(name, baseTemplatePath, path string) er
return err
}
if _, err := compiler.CompileWithTemplate(t.New(templateName)); err != nil {
templ, err := compiler.CompileWithTemplate(t.New(templateName))
if err != nil {
return err
}
return applyTemplateTransformers(templ)
case ".ace":
var innerContent, baseContent []byte
innerContent, err := afero.ReadFile(hugofs.Source(), path)
@ -353,8 +366,6 @@ func (t *GoHTMLTemplate) AddTemplateFile(name, baseTemplatePath, path string) er
return t.AddTemplate(name, string(b))
}
return nil
}
func (t *GoHTMLTemplate) GenerateTemplateNameFrom(base, path string) string {
@ -467,7 +478,7 @@ func (t *GoHTMLTemplate) loadTemplates(absPath string, prefix string) {
}
if err := t.AddTemplateFile(tplName, baseTemplatePath, path); err != nil {
jww.ERROR.Printf("Failed to add template %s: %s", tplName, err)
jww.ERROR.Printf("Failed to add template %s in path %s: %s", tplName, path, err)
}
}

256
tpl/template_ast_transformers.go Normal file
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@ -0,0 +1,256 @@
// Copyright 2016 The Hugo Authors. All rights reserved.
//
// 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 tpl
import (
"errors"
"html/template"
"strings"
"text/template/parse"
)
// decl keeps track of the variable mappings, i.e. $mysite => .Site etc.
type decl map[string]string
var paramsPaths = [][]string{
{"Params"},
{"Site", "Params"},
// Site and Pag referenced from shortcodes
{"Page", "Site", "Params"},
{"Page", "Params"},
{"Site", "Language", "Params"},
}
type templateContext struct {
decl decl
templ *template.Template
}
func newTemplateContext(templ *template.Template) *templateContext {
return &templateContext{templ: templ, decl: make(map[string]string)}
}
func applyTemplateTransformers(templ *template.Template) error {
if templ == nil || templ.Tree == nil {
return errors.New("expected template, but none provided")
}
c := newTemplateContext(templ)
c.paramsKeysToLower(templ.Tree.Root)
return nil
}
// paramsKeysToLower is made purposely non-generic to make it not so tempting
// to do more of these hard-to-maintain AST transformations.
func (c *templateContext) paramsKeysToLower(n parse.Node) {
switch x := n.(type) {
case *parse.ListNode:
if x != nil {
c.paramsKeysToLowerForNodes(x.Nodes...)
}
case *parse.ActionNode:
c.paramsKeysToLowerForNodes(x.Pipe)
case *parse.IfNode:
c.paramsKeysToLowerForNodes(x.Pipe, x.List, x.ElseList)
case *parse.WithNode:
c.paramsKeysToLowerForNodes(x.Pipe, x.List, x.ElseList)
case *parse.RangeNode:
c.paramsKeysToLowerForNodes(x.Pipe, x.List, x.ElseList)
case *parse.TemplateNode:
subTempl := c.templ.Lookup(x.Name)
if subTempl != nil {
c.paramsKeysToLowerForNodes(subTempl.Tree.Root)
}
case *parse.PipeNode:
for i, elem := range x.Decl {
if len(x.Cmds) > i {
// maps $site => .Site etc.
c.decl[elem.Ident[0]] = x.Cmds[i].String()
}
}
for _, cmd := range x.Cmds {
c.paramsKeysToLower(cmd)
}
case *parse.CommandNode:
for _, elem := range x.Args {
switch an := elem.(type) {
case *parse.FieldNode:
c.updateIdentsIfNeeded(an.Ident)
case *parse.VariableNode:
c.updateIdentsIfNeeded(an.Ident)
}
}
}
}
func (c *templateContext) paramsKeysToLowerForNodes(nodes ...parse.Node) {
for _, node := range nodes {
c.paramsKeysToLower(node)
}
}
func (c *templateContext) updateIdentsIfNeeded(idents []string) {
index := c.decl.indexOfReplacementStart(idents)
if index == -1 {
return
}
for i := index; i < len(idents); i++ {
idents[i] = strings.ToLower(idents[i])
}
}
// indexOfReplacementStart will return the index of where to start doing replacement,
// -1 if none needed.
func (d decl) indexOfReplacementStart(idents []string) int {
l := len(idents)
if l == 0 {
return -1
}
first := idents[0]
firstIsVar := first[0] == '$'
if l == 1 && !firstIsVar {
// This can not be a Params.x
return -1
}
if !firstIsVar {
found := false
for _, paramsPath := range paramsPaths {
if first == paramsPath[0] {
found = true
break
}
}
if !found {
return -1
}
}
var (
resolvedIdents []string
replacements []string
replaced []string
)
// An Ident can start out as one of
// [Params] [$blue] [$colors.Blue]
// We need to resolve the variables, so
// $blue => [Params Colors Blue]
// etc.
replacements = []string{idents[0]}
// Loop until there are no more $vars to resolve.
for i := 0; i < len(replacements); i++ {
if i > 20 {
// bail out
return -1
}
potentialVar := replacements[i]
if potentialVar == "$" {
continue
}
if potentialVar == "" || potentialVar[0] != '$' {
// leave it as is
replaced = append(replaced, strings.Split(potentialVar, ".")...)
continue
}
replacement, ok := d[potentialVar]
if !ok {
// Temporary range vars. We do not care about those.
return -1
}
replacement = strings.TrimPrefix(replacement, ".")
if replacement == "" {
continue
}
if replacement[0] == '$' {
// Needs further expansion
replacements = append(replacements, strings.Split(replacement, ".")...)
} else {
replaced = append(replaced, strings.Split(replacement, ".")...)
}
}
resolvedIdents = append(replaced, idents[1:]...)
for _, paramPath := range paramsPaths {
if index := indexOfFirstRealIdentAfterWords(resolvedIdents, idents, paramPath...); index != -1 {
return index
}
}
return -1
}
func indexOfFirstRealIdentAfterWords(resolvedIdents, idents []string, words ...string) int {
if !sliceStartsWith(resolvedIdents, words...) {
return -1
}
for i, ident := range idents {
if ident == "" || ident[0] == '$' {
continue
}
found := true
for _, word := range words {
if ident == word {
found = false
break
}
}
if found {
return i
}
}
return -1
}
func sliceStartsWith(slice []string, words ...string) bool {
if len(slice) < len(words) {
return false
}
for i, word := range words {
if word != slice[i] {
return false
}
}
return true
}

259
tpl/template_ast_transformers_test.go Normal file
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@ -0,0 +1,259 @@
// Copyright 2016 The Hugo Authors. All rights reserved.
//
// 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 tpl
import (
"bytes"
"testing"
"html/template"
jww "github.com/spf13/jwalterweatherman"
"github.com/stretchr/testify/require"
)
var (
testFuncs = map[string]interface{}{
"Echo": func(v interface{}) interface{} { return v },
}
paramsData = map[string]interface{}{
"NotParam": "Hi There",
"Slice": []int{1, 3},
"Params": map[string]interface{}{
"lower": "P1L",
},
"Site": map[string]interface{}{
"Params": map[string]interface{}{
"lower": "P2L",
"slice": []int{1, 3},
},
"Language": map[string]interface{}{
"Params": map[string]interface{}{
"lower": "P22L",
},
},
"Data": map[string]interface{}{
"Params": map[string]interface{}{
"NOLOW": "P3H",
},
},
},
}
paramsTempl = `
{{ $page := . }}
{{ $pageParams := .Params }}
{{ $site := .Site }}
{{ $siteParams := .Site.Params }}
{{ $data := .Site.Data }}
{{ $notparam := .NotParam }}
P1: {{ .Params.LOWER }}
P1_2: {{ $.Params.LOWER }}
P1_3: {{ $page.Params.LOWER }}
P1_4: {{ $pageParams.LOWER }}
P2: {{ .Site.Params.LOWER }}
P2_2: {{ $.Site.Params.LOWER }}
P2_3: {{ $site.Params.LOWER }}
P2_4: {{ $siteParams.LOWER }}
P22: {{ .Site.Language.Params.LOWER }}
P3: {{ .Site.Data.Params.NOLOW }}
P3_2: {{ $.Site.Data.Params.NOLOW }}
P3_3: {{ $site.Data.Params.NOLOW }}
P3_4: {{ $data.Params.NOLOW }}
P4: {{ range $i, $e := .Site.Params.SLICE }}{{ $e }}{{ end }}
P5: {{ Echo .Params.LOWER }}
P5_2: {{ Echo $site.Params.LOWER }}
{{ if .Params.LOWER }}
IF: {{ .Params.LOWER }}
{{ end }}
{{ if .Params.NOT_EXIST }}
{{ else }}
ELSE: {{ .Params.LOWER }}
{{ end }}
{{ with .Params.LOWER }}
WITH: {{ . }}
{{ end }}
{{ range .Slice }}
RANGE: {{ . }}: {{ $.Params.LOWER }}
{{ end }}
{{ index .Slice 1 }}
{{ .NotParam }}
{{ .NotParam }}
{{ .NotParam }}
{{ .NotParam }}
{{ .NotParam }}
{{ .NotParam }}
{{ .NotParam }}
{{ .NotParam }}
{{ .NotParam }}
{{ .NotParam }}
{{ $notparam }}
`
)
func TestParamsKeysToLower(t *testing.T) {
require.Error(t, applyTemplateTransformers(nil))
templ, err := template.New("foo").Funcs(testFuncs).Parse(paramsTempl)
require.NoError(t, err)
c := newTemplateContext(templ)
require.Equal(t, -1, c.decl.indexOfReplacementStart([]string{}))
c.paramsKeysToLower(templ.Tree.Root)
var b bytes.Buffer
require.NoError(t, templ.Execute(&b, paramsData))
result := b.String()
require.Contains(t, result, "P1: P1L")
require.Contains(t, result, "P1_2: P1L")
require.Contains(t, result, "P1_3: P1L")
require.Contains(t, result, "P1_4: P1L")
require.Contains(t, result, "P2: P2L")
require.Contains(t, result, "P2_2: P2L")
require.Contains(t, result, "P2_3: P2L")
require.Contains(t, result, "P2_4: P2L")
require.Contains(t, result, "P22: P22L")
require.Contains(t, result, "P3: P3H")
require.Contains(t, result, "P3_2: P3H")
require.Contains(t, result, "P3_3: P3H")
require.Contains(t, result, "P3_4: P3H")
require.Contains(t, result, "P4: 13")
require.Contains(t, result, "P5: P1L")
require.Contains(t, result, "P5_2: P2L")
require.Contains(t, result, "IF: P1L")
require.Contains(t, result, "ELSE: P1L")
require.Contains(t, result, "WITH: P1L")
require.Contains(t, result, "RANGE: 3: P1L")
require.Contains(t, result, "Hi There")
}
func BenchmarkTemplateParamsKeysToLower(b *testing.B) {
templ, err := template.New("foo").Funcs(testFuncs).Parse(paramsTempl)
if err != nil {
b.Fatal(err)
}
templates := make([]*template.Template, b.N)
for i := 0; i < b.N; i++ {
templates[i], err = templ.Clone()
if err != nil {
b.Fatal(err)
}
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
c := newTemplateContext(templates[i])
c.paramsKeysToLower(templ.Tree.Root)
}
}
func TestParamsKeysToLowerVars(t *testing.T) {
var (
ctx = map[string]interface{}{
"Params": map[string]interface{}{
"colors": map[string]interface{}{
"blue": "Amber",
},
},
}
// This is how Amber behaves:
paramsTempl = `
{{$__amber_1 := .Params.Colors}}
{{$__amber_2 := $__amber_1.Blue}}
Color: {{$__amber_2}}
Blue: {{ $__amber_1.Blue}}
`
)
templ, err := template.New("foo").Parse(paramsTempl)
require.NoError(t, err)
c := newTemplateContext(templ)
c.paramsKeysToLower(templ.Tree.Root)
var b bytes.Buffer
require.NoError(t, templ.Execute(&b, ctx))
result := b.String()
require.Contains(t, result, "Color: Amber")
}
func TestParamsKeysToLowerInBlockTemplate(t *testing.T) {
var (
ctx = map[string]interface{}{
"Params": map[string]interface{}{
"lower": "P1L",
},
}
master = `
P1: {{ .Params.LOWER }}
{{ block "main" . }}DEFAULT{{ end }}`
overlay = `
{{ define "main" }}
P2: {{ .Params.LOWER }}
{{ end }}`
)
masterTpl, err := template.New("foo").Parse(master)
require.NoError(t, err)
overlayTpl, err := template.Must(masterTpl.Clone()).Parse(overlay)
require.NoError(t, err)
overlayTpl = overlayTpl.Lookup(overlayTpl.Name())
c := newTemplateContext(overlayTpl)
c.paramsKeysToLower(overlayTpl.Tree.Root)
var b bytes.Buffer
require.NoError(t, overlayTpl.Execute(&b, ctx))
result := b.String()
require.Contains(t, result, "P1: P1L")
require.Contains(t, result, "P2: P1L")
}
func init() {
jww.SetStdoutThreshold(jww.LevelCritical)
}