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parse_frontmatter_test.go
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parse_frontmatter_test.go
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// Copyright 2015 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 parser
// TODO Support Mac Encoding (\r)
import (
"bufio"
"bytes"
"io"
"os"
"path/filepath"
"strings"
"testing"
)
const (
contentNoFrontmatter = "a page with no front matter"
contentWithFrontmatter = "---\ntitle: front matter\n---\nContent with front matter"
contentHTMLNoDoctype = "<html>\n\t<body>\n\t</body>\n</html>"
contentHTMLWithDoctype = "<!doctype html><html><body></body></html>"
contentHTMLWithFrontmatter = "---\ntitle: front matter\n---\n<!doctype><html><body></body></html>"
contentHTML = " <html><body></body></html>"
contentLinefeedAndHTML = "\n<html><body></body></html>"
contentIncompleteEndFrontmatterDelim = "---\ntitle: incomplete end fm delim\n--\nincomplete frontmatter delim"
contentMissingEndFrontmatterDelim = "---\ntitle: incomplete end fm delim\nincomplete frontmatter delim"
contentSlugWorking = "---\ntitle: slug doc 2\nslug: slug-doc-2\n\n---\nslug doc 2 content"
contentSlugWorkingVariation = "---\ntitle: slug doc 3\nslug: slug-doc 3\n---\nslug doc 3 content"
contentSlugBug = "---\ntitle: slug doc 2\nslug: slug-doc-2\n---\nslug doc 2 content"
contentSlugWithJSONFrontMatter = "{\n \"categories\": \"d\",\n \"tags\": [\n \"a\", \n \"b\", \n \"c\"\n ]\n}\nJSON Front Matter with tags and categories"
contentWithJSONLooseFrontmatter = "{\n \"categories\": \"d\"\n \"tags\": [\n \"a\" \n \"b\" \n \"c\"\n ]\n}\nJSON Front Matter with tags and categories"
contentSlugWithJSONFrontMatterFirstLineOnly = "{\"categories\":\"d\",\"tags\":[\"a\",\"b\",\"c\"]}\nJSON Front Matter with tags and categories"
contentSlugWithJSONFrontMatterFirstLine = "{\"categories\":\"d\",\n \"tags\":[\"a\",\"b\",\"c\"]}\nJSON Front Matter with tags and categories"
)
var lineEndings = []string{"\n", "\r\n"}
var delimiters = []string{"---", "+++"}
func pageMust(p Page, err error) *page {
if err != nil {
panic(err)
}
return p.(*page)
}
func TestDegenerateCreatePageFrom(t *testing.T) {
tests := []struct {
content string
}{
{contentMissingEndFrontmatterDelim},
{contentIncompleteEndFrontmatterDelim},
}
for _, test := range tests {
for _, ending := range lineEndings {
test.content = strings.Replace(test.content, "\n", ending, -1)
_, err := ReadFrom(strings.NewReader(test.content))
if err == nil {
t.Errorf("Content should return an err:\n%q\n", test.content)
}
}
}
}
func checkPageRender(t *testing.T, p *page, expected bool) {
if p.render != expected {
t.Errorf("page.render should be %t, got: %t", expected, p.render)
}
}
func checkPageFrontMatterIsNil(t *testing.T, p *page, content string, expected bool) {
if bool(p.frontmatter == nil) != expected {
t.Logf("\n%q\n", content)
t.Errorf("page.frontmatter == nil? %t, got %t", expected, p.frontmatter == nil)
}
}
func checkPageFrontMatterContent(t *testing.T, p *page, frontMatter string) {
if p.frontmatter == nil {
return
}
if !bytes.Equal(p.frontmatter, []byte(frontMatter)) {
t.Errorf("frontmatter mismatch\nexp: %q\ngot: %q", frontMatter, p.frontmatter)
}
}
func checkPageContent(t *testing.T, p *page, expected string) {
if !bytes.Equal(p.content, []byte(expected)) {
t.Errorf("content mismatch\nexp: %q\ngot: %q", expected, p.content)
}
}
func TestStandaloneCreatePageFrom(t *testing.T) {
tests := []struct {
content string
expectedMustRender bool
frontMatterIsNil bool
frontMatter string
bodycontent string
}{
{contentNoFrontmatter, true, true, "", "a page with no front matter"},
{contentWithFrontmatter, true, false, "---\ntitle: front matter\n---\n", "Content with front matter"},
{contentHTMLNoDoctype, false, true, "", "<html>\n\t<body>\n\t</body>\n</html>"},
{contentHTMLWithDoctype, false, true, "", "<!doctype html><html><body></body></html>"},
{contentHTMLWithFrontmatter, true, false, "---\ntitle: front matter\n---\n", "<!doctype><html><body></body></html>"},
{contentHTML, false, true, "", "<html><body></body></html>"},
{contentLinefeedAndHTML, false, true, "", "<html><body></body></html>"},
{contentSlugWithJSONFrontMatter, true, false, "{\n \"categories\": \"d\",\n \"tags\": [\n \"a\", \n \"b\", \n \"c\"\n ]\n}", "JSON Front Matter with tags and categories"},
{contentWithJSONLooseFrontmatter, true, false, "{\n \"categories\": \"d\"\n \"tags\": [\n \"a\" \n \"b\" \n \"c\"\n ]\n}", "JSON Front Matter with tags and categories"},
{contentSlugWithJSONFrontMatterFirstLineOnly, true, false, "{\"categories\":\"d\",\"tags\":[\"a\",\"b\",\"c\"]}", "JSON Front Matter with tags and categories"},
{contentSlugWithJSONFrontMatterFirstLine, true, false, "{\"categories\":\"d\",\n \"tags\":[\"a\",\"b\",\"c\"]}", "JSON Front Matter with tags and categories"},
{contentSlugWorking, true, false, "---\ntitle: slug doc 2\nslug: slug-doc-2\n\n---\n", "slug doc 2 content"},
{contentSlugWorkingVariation, true, false, "---\ntitle: slug doc 3\nslug: slug-doc 3\n---\n", "slug doc 3 content"},
{contentSlugBug, true, false, "---\ntitle: slug doc 2\nslug: slug-doc-2\n---\n", "slug doc 2 content"},
}
for _, test := range tests {
for _, ending := range lineEndings {
test.content = strings.Replace(test.content, "\n", ending, -1)
test.frontMatter = strings.Replace(test.frontMatter, "\n", ending, -1)
test.bodycontent = strings.Replace(test.bodycontent, "\n", ending, -1)
p := pageMust(ReadFrom(strings.NewReader(test.content)))
checkPageRender(t, p, test.expectedMustRender)
checkPageFrontMatterIsNil(t, p, test.content, test.frontMatterIsNil)
checkPageFrontMatterContent(t, p, test.frontMatter)
checkPageContent(t, p, test.bodycontent)
}
}
}
func BenchmarkLongFormRender(b *testing.B) {
tests := []struct {
filename string
buf []byte
}{
{filename: "long_text_test.md"},
}
for i, test := range tests {
path := filepath.FromSlash(test.filename)
f, err := os.Open(path)
if err != nil {
b.Fatalf("Unable to open %s: %s", path, err)
}
defer f.Close()
membuf := new(bytes.Buffer)
if _, err := io.Copy(membuf, f); err != nil {
b.Fatalf("Unable to read %s: %s", path, err)
}
tests[i].buf = membuf.Bytes()
}
b.ResetTimer()
for i := 0; i <= b.N; i++ {
for _, test := range tests {
ReadFrom(bytes.NewReader(test.buf))
}
}
}
func TestPageShouldRender(t *testing.T) {
tests := []struct {
content []byte
expected bool
}{
{[]byte{}, false},
{[]byte{'<'}, false},
{[]byte{'-'}, true},
{[]byte("--"), true},
{[]byte("---"), true},
{[]byte("---\n"), true},
{[]byte{'a'}, true},
}
for _, test := range tests {
for _, ending := range lineEndings {
test.content = bytes.Replace(test.content, []byte("\n"), []byte(ending), -1)
if render := shouldRender(test.content); render != test.expected {
t.Errorf("Expected %s to shouldRender = %t, got: %t", test.content, test.expected, render)
}
}
}
}
func TestPageHasFrontMatter(t *testing.T) {
tests := []struct {
content []byte
expected bool
}{
{[]byte{'-'}, false},
{[]byte("--"), false},
{[]byte("---"), false},
{[]byte("---\n"), true},
{[]byte("---\n"), true},
{[]byte("--- \n"), true},
{[]byte("--- \n"), true},
{[]byte{'a'}, false},
{[]byte{'{'}, true},
{[]byte("{\n "), true},
{[]byte{'}'}, false},
}
for _, test := range tests {
for _, ending := range lineEndings {
test.content = bytes.Replace(test.content, []byte("\n"), []byte(ending), -1)
if isFrontMatterDelim := isFrontMatterDelim(test.content); isFrontMatterDelim != test.expected {
t.Errorf("Expected %q isFrontMatterDelim = %t, got: %t", test.content, test.expected, isFrontMatterDelim)
}
}
}
}
func TestExtractFrontMatter(t *testing.T) {
tests := []struct {
frontmatter string
extracted []byte
errIsNil bool
}{
{"", nil, false},
{"-", nil, false},
{"---\n", nil, false},
{"---\nfoobar", nil, false},
{"---\nfoobar\nbarfoo\nfizbaz\n", nil, false},
{"---\nblar\n-\n", nil, false},
{"---\nralb\n---\n", []byte("---\nralb\n---\n"), true},
{"---\neof\n---", []byte("---\neof\n---"), true},
{"--- \neof\n---", []byte("---\neof\n---"), true},
{"---\nminc\n---\ncontent", []byte("---\nminc\n---\n"), true},
{"---\nminc\n--- \ncontent", []byte("---\nminc\n---\n"), true},
{"--- \nminc\n--- \ncontent", []byte("---\nminc\n---\n"), true},
{"---\ncnim\n---\ncontent\n", []byte("---\ncnim\n---\n"), true},
{"---\ntitle: slug doc 2\nslug: slug-doc-2\n---\ncontent\n", []byte("---\ntitle: slug doc 2\nslug: slug-doc-2\n---\n"), true},
{"---\npermalink: '/blog/title---subtitle.html'\n---\ncontent\n", []byte("---\npermalink: '/blog/title---subtitle.html'\n---\n"), true},
}
for _, test := range tests {
for _, ending := range lineEndings {
test.frontmatter = strings.Replace(test.frontmatter, "\n", ending, -1)
test.extracted = bytes.Replace(test.extracted, []byte("\n"), []byte(ending), -1)
for _, delim := range delimiters {
test.frontmatter = strings.Replace(test.frontmatter, "---", delim, -1)
test.extracted = bytes.Replace(test.extracted, []byte("---"), []byte(delim), -1)
line, err := peekLine(bufio.NewReader(strings.NewReader(test.frontmatter)))
if err != nil {
continue
}
l, r := determineDelims(line)
fm, err := extractFrontMatterDelims(bufio.NewReader(strings.NewReader(test.frontmatter)), l, r)
if (err == nil) != test.errIsNil {
t.Logf("\n%q\n", string(test.frontmatter))
t.Errorf("Expected err == nil => %t, got: %t. err: %s", test.errIsNil, err == nil, err)
continue
}
if !bytes.Equal(fm, test.extracted) {
t.Errorf("Frontmatter did not match:\nexp: %q\ngot: %q", string(test.extracted), fm)
}
}
}
}
}
func TestExtractFrontMatterDelim(t *testing.T) {
var (
noErrExpected = true
errExpected = false
)
tests := []struct {
frontmatter string
extracted string
errIsNil bool
}{
{"", "", errExpected},
{"{", "", errExpected},
{"{}", "{}", noErrExpected},
{"{} ", "{}", noErrExpected},
{"{ } ", "{ }", noErrExpected},
{"{ { }", "", errExpected},
{"{ { } }", "{ { } }", noErrExpected},
{"{ { } { } }", "{ { } { } }", noErrExpected},
{"{\n{\n}\n}\n", "{\n{\n}\n}", noErrExpected},
{"{\n \"categories\": \"d\",\n \"tags\": [\n \"a\", \n \"b\", \n \"c\"\n ]\n}\nJSON Front Matter with tags and categories", "{\n \"categories\": \"d\",\n \"tags\": [\n \"a\", \n \"b\", \n \"c\"\n ]\n}", noErrExpected},
{"{\n \"categories\": \"d\"\n \"tags\": [\n \"a\" \n \"b\" \n \"c\"\n ]\n}\nJSON Front Matter with tags and categories", "{\n \"categories\": \"d\"\n \"tags\": [\n \"a\" \n \"b\" \n \"c\"\n ]\n}", noErrExpected},
// Issue #3511
{`{ "title": "{" }`, `{ "title": "{" }`, noErrExpected},
{`{ "title": "{}" }`, `{ "title": "{}" }`, noErrExpected},
// Issue #3661
{`{ "title": "\"" }`, `{ "title": "\"" }`, noErrExpected},
{`{ "title": "\"{", "other": "\"{}" }`, `{ "title": "\"{", "other": "\"{}" }`, noErrExpected},
{`{ "title": "\"Foo\"" }`, `{ "title": "\"Foo\"" }`, noErrExpected},
{`{ "title": "\"Foo\"\"" }`, `{ "title": "\"Foo\"\"" }`, noErrExpected},
{`{ "url": "http:\/\/example.com\/play\/url?id=1" }`, `{ "url": "http:\/\/example.com\/play\/url?id=1" }`, noErrExpected},
{`{ "test": "\"New\r\nString\"" }`, `{ "test": "\"New\r\nString\"" }`, noErrExpected},
{`{ "test": "RTS\/RPG" }`, `{ "test": "RTS\/RPG" }`, noErrExpected},
}
for i, test := range tests {
fm, err := extractFrontMatterDelims(bufio.NewReader(strings.NewReader(test.frontmatter)), []byte("{"), []byte("}"))
if (err == nil) != test.errIsNil {
t.Logf("\n%q\n", string(test.frontmatter))
t.Errorf("[%d] Expected err == nil => %t, got: %t. err: %s", i, test.errIsNil, err == nil, err)
continue
}
if !bytes.Equal(fm, []byte(test.extracted)) {
t.Logf("\n%q\n", string(test.frontmatter))
t.Errorf("[%d] Frontmatter did not match:\nexp: %q\ngot: %q", i, string(test.extracted), fm)
}
}
}