mdBook/tests/rendered_output.rs

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#[macro_use]
extern crate pretty_assertions;
mod dummy_book;
use crate::dummy_book::{assert_contains_strings, assert_doesnt_contain_strings, DummyBook};
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use mdbook::config::Config;
use mdbook::errors::*;
use mdbook::utils::fs::{file_to_string, write_file};
use mdbook::MDBook;
use select::document::Document;
use select::predicate::{Class, Name, Predicate};
use std::ffi::OsStr;
use std::fs;
use std::io::Write;
use std::path::Path;
use tempfile::Builder as TempFileBuilder;
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use walkdir::{DirEntry, WalkDir};
const BOOK_ROOT: &str = concat!(env!("CARGO_MANIFEST_DIR"), "/tests/dummy_book");
const TOC_TOP_LEVEL: &[&str] = &[
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"1. First Chapter",
"2. Second Chapter",
"Conclusion",
"Dummy Book",
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"Introduction",
];
const TOC_SECOND_LEVEL: &[&str] = &[
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"1.1. Nested Chapter",
"1.2. Includes",
"2.1. Nested Chapter",
"1.3. Recursive",
];
/// Make sure you can load the dummy book and build it without panicking.
#[test]
fn build_the_dummy_book() {
let temp = DummyBook::new().build().unwrap();
let md = MDBook::load(temp.path()).unwrap();
md.build().unwrap();
}
#[test]
fn by_default_mdbook_generates_rendered_content_in_the_book_directory() {
let temp = DummyBook::new().build().unwrap();
let md = MDBook::load(temp.path()).unwrap();
assert!(!temp.path().join("book").exists());
md.build().unwrap();
assert!(temp.path().join("book").exists());
let index_file = md.build_dir_for("html").join("index.html");
assert!(index_file.exists());
}
#[test]
fn make_sure_bottom_level_files_contain_links_to_chapters() {
let temp = DummyBook::new().build().unwrap();
let md = MDBook::load(temp.path()).unwrap();
md.build().unwrap();
let dest = temp.path().join("book");
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let links = vec![
r#"href="intro.html""#,
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r#"href="first/index.html""#,
r#"href="first/nested.html""#,
r#"href="second.html""#,
r#"href="conclusion.html""#,
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];
let files_in_bottom_dir = vec!["index.html", "intro.html", "second.html", "conclusion.html"];
for filename in files_in_bottom_dir {
assert_contains_strings(dest.join(filename), &links);
}
}
#[test]
fn check_correct_cross_links_in_nested_dir() {
let temp = DummyBook::new().build().unwrap();
let md = MDBook::load(temp.path()).unwrap();
md.build().unwrap();
let first = temp.path().join("book").join("first");
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let links = vec![
r#"href="../intro.html""#,
r#"href="../first/index.html""#,
r#"href="../first/nested.html""#,
r#"href="../second.html""#,
r#"href="../conclusion.html""#,
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];
let files_in_nested_dir = vec!["index.html", "nested.html"];
for filename in files_in_nested_dir {
assert_contains_strings(first.join(filename), &links);
}
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assert_contains_strings(
first.join("index.html"),
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&[r##"href="#some-section" id="some-section""##],
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);
assert_contains_strings(
first.join("nested.html"),
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&[r##"href="#some-section" id="some-section""##],
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);
}
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#[test]
fn check_correct_relative_links_in_print_page() {
let temp = DummyBook::new().build().unwrap();
let md = MDBook::load(temp.path()).unwrap();
md.build().unwrap();
let first = temp.path().join("book");
assert_contains_strings(
first.join("print.html"),
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&[
r##"<a href="second/../first/nested.html">the first section</a>,"##,
r##"<a href="second/../../std/foo/bar.html">outside</a>"##,
r##"<img src="second/../images/picture.png" alt="Some image" />"##,
],
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);
}
#[test]
fn rendered_code_has_playpen_stuff() {
let temp = DummyBook::new().build().unwrap();
let md = MDBook::load(temp.path()).unwrap();
md.build().unwrap();
let nested = temp.path().join("book/first/nested.html");
let playpen_class = vec![r#"class="playpen""#];
assert_contains_strings(nested, &playpen_class);
let book_js = temp.path().join("book/book.js");
assert_contains_strings(book_js, &[".playpen"]);
}
#[test]
fn chapter_content_appears_in_rendered_document() {
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let content = vec![
("index.html", "This file is just here to cause the"),
("intro.html", "Here's some interesting text"),
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("second.html", "Second Chapter"),
("first/nested.html", "testable code"),
("first/index.html", "more text"),
("conclusion.html", "Conclusion"),
];
let temp = DummyBook::new().build().unwrap();
let md = MDBook::load(temp.path()).unwrap();
md.build().unwrap();
let destination = temp.path().join("book");
for (filename, text) in content {
let path = destination.join(filename);
assert_contains_strings(path, &[text]);
}
}
/// Apply a series of predicates to some root predicate, where each
/// successive predicate is the descendant of the last one. Similar to how you
/// might do `ul.foo li a` in CSS to access all anchor tags in the `foo` list.
macro_rules! descendants {
($root:expr, $($child:expr),*) => {
$root
$(
.descendant($child)
)*
};
}
/// Make sure that all `*.md` files (excluding `SUMMARY.md`) were rendered
/// and placed in the `book` directory with their extensions set to `*.html`.
#[test]
fn chapter_files_were_rendered_to_html() {
let temp = DummyBook::new().build().unwrap();
let src = Path::new(BOOK_ROOT).join("src");
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let chapter_files = WalkDir::new(&src)
.into_iter()
.filter_entry(|entry| entry_ends_with(entry, ".md"))
.filter_map(std::result::Result::ok)
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.map(|entry| entry.path().to_path_buf())
.filter(|path| path.file_name().and_then(OsStr::to_str) != Some("SUMMARY.md"));
for chapter in chapter_files {
let rendered_location = temp
.path()
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.join(chapter.strip_prefix(&src).unwrap())
.with_extension("html");
assert!(
rendered_location.exists(),
"{} doesn't exits",
rendered_location.display()
);
}
}
fn entry_ends_with(entry: &DirEntry, ending: &str) -> bool {
entry.file_name().to_string_lossy().ends_with(ending)
}
/// Read the main page (`book/index.html`) and expose it as a DOM which we
/// can search with the `select` crate
fn root_index_html() -> Result<Document> {
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let temp = DummyBook::new()
.build()
.chain_err(|| "Couldn't create the dummy book")?;
MDBook::load(temp.path())?
.build()
.chain_err(|| "Book building failed")?;
let index_page = temp.path().join("book").join("index.html");
let html = file_to_string(&index_page).chain_err(|| "Unable to read index.html")?;
Ok(Document::from(html.as_str()))
}
#[test]
fn check_second_toc_level() {
let doc = root_index_html().unwrap();
let mut should_be = Vec::from(TOC_SECOND_LEVEL);
should_be.sort();
let pred = descendants!(Class("chapter"), Name("li"), Name("li"), Name("a"));
let mut children_of_children: Vec<_> = doc
.find(pred)
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.map(|elem| elem.text().trim().to_string())
.collect();
children_of_children.sort();
assert_eq!(children_of_children, should_be);
}
#[test]
fn check_first_toc_level() {
let doc = root_index_html().unwrap();
let mut should_be = Vec::from(TOC_TOP_LEVEL);
should_be.extend(TOC_SECOND_LEVEL);
should_be.sort();
let pred = descendants!(Class("chapter"), Name("li"), Name("a"));
let mut children: Vec<_> = doc
.find(pred)
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.map(|elem| elem.text().trim().to_string())
.collect();
children.sort();
assert_eq!(children, should_be);
}
#[test]
fn check_spacers() {
let doc = root_index_html().unwrap();
let should_be = 1;
let num_spacers = doc
.find(Class("chapter").descendant(Name("li").and(Class("spacer"))))
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.count();
assert_eq!(num_spacers, should_be);
}
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/// Ensure building fails if `create-missing` is false and one of the files does
/// not exist.
#[test]
fn failure_on_missing_file() {
let temp = DummyBook::new().build().unwrap();
fs::remove_file(temp.path().join("src").join("intro.md")).unwrap();
let mut cfg = Config::default();
cfg.build.create_missing = false;
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let got = MDBook::load_with_config(temp.path(), cfg);
assert!(got.is_err());
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}
/// Ensure a missing file is created if `create-missing` is true.
#[test]
fn create_missing_file_with_config() {
let temp = DummyBook::new().build().unwrap();
fs::remove_file(temp.path().join("src").join("intro.md")).unwrap();
let mut cfg = Config::default();
cfg.build.create_missing = true;
assert!(!temp.path().join("src").join("intro.md").exists());
let _md = MDBook::load_with_config(temp.path(), cfg).unwrap();
assert!(temp.path().join("src").join("intro.md").exists());
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}
/// This makes sure you can include a Rust file with `{{#playpen example.rs}}`.
/// Specification is in `book-example/src/format/rust.md`
#[test]
fn able_to_include_playpen_files_in_chapters() {
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let temp = DummyBook::new().build().unwrap();
let md = MDBook::load(temp.path()).unwrap();
md.build().unwrap();
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let second = temp.path().join("book/second.html");
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let playpen_strings = &[
r#"class="playpen""#,
r#"println!(&quot;Hello World!&quot;);"#,
];
assert_contains_strings(&second, playpen_strings);
assert_doesnt_contain_strings(&second, &["{{#playpen example.rs}}"]);
}
/// This makes sure you can include a Rust file with `{{#include ../SUMMARY.md}}`.
#[test]
fn able_to_include_files_in_chapters() {
let temp = DummyBook::new().build().unwrap();
let md = MDBook::load(temp.path()).unwrap();
md.build().unwrap();
let includes = temp.path().join("book/first/includes.html");
let summary_strings = &[
r##"<h1><a class="header" href="#summary" id="summary">Summary</a></h1>"##,
">First Chapter</a>",
];
assert_contains_strings(&includes, summary_strings);
assert_doesnt_contain_strings(&includes, &["{{#include ../SUMMARY.md::}}"]);
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}
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/// Ensure cyclic includes are capped so that no exceptions occur
#[test]
fn recursive_includes_are_capped() {
let temp = DummyBook::new().build().unwrap();
let md = MDBook::load(temp.path()).unwrap();
md.build().unwrap();
let recursive = temp.path().join("book/first/recursive.html");
let content = &["Around the world, around the world
Around the world, around the world
Around the world, around the world"];
assert_contains_strings(&recursive, content);
}
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#[test]
fn example_book_can_build() {
let example_book_dir = dummy_book::new_copy_of_example_book().unwrap();
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let md = MDBook::load(example_book_dir.path()).unwrap();
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md.build().unwrap();
}
#[test]
fn book_with_a_reserved_filename_does_not_build() {
let tmp_dir = TempFileBuilder::new().prefix("mdBook").tempdir().unwrap();
let src_path = tmp_dir.path().join("src");
fs::create_dir(&src_path).unwrap();
let summary_path = src_path.join("SUMMARY.md");
let print_path = src_path.join("print.md");
fs::File::create(print_path).unwrap();
let mut summary_file = fs::File::create(summary_path).unwrap();
writeln!(summary_file, "[print](print.md)").unwrap();
let md = MDBook::load(tmp_dir.path()).unwrap();
let got = md.build();
assert!(got.is_err());
}
#[test]
fn by_default_mdbook_use_index_preprocessor_to_convert_readme_to_index() {
let temp = DummyBook::new().build().unwrap();
let mut cfg = Config::default();
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cfg.set("book.src", "src2")
.expect("Couldn't set config.book.src to \"src2\".");
let md = MDBook::load_with_config(temp.path(), cfg).unwrap();
md.build().unwrap();
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let first_index = temp.path().join("book").join("first").join("index.html");
let expected_strings = vec![
r#"href="../first/index.html""#,
r#"href="../second/index.html""#,
"First README",
];
assert_contains_strings(&first_index, &expected_strings);
assert_doesnt_contain_strings(&first_index, &["README.html"]);
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let second_index = temp.path().join("book").join("second").join("index.html");
let unexpected_strings = vec!["Second README"];
assert_doesnt_contain_strings(&second_index, &unexpected_strings);
}
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#[test]
fn theme_dir_overrides_work_correctly() {
let book_dir = dummy_book::new_copy_of_example_book().unwrap();
let book_dir = book_dir.path();
let theme_dir = book_dir.join("theme");
let mut index = mdbook::theme::INDEX.to_vec();
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index.extend_from_slice(b"\n<!-- This is a modified index.hbs! -->");
write_file(&theme_dir, "index.hbs", &index).unwrap();
let md = MDBook::load(book_dir).unwrap();
md.build().unwrap();
let built_index = book_dir.join("book").join("index.html");
dummy_book::assert_contains_strings(built_index, &["This is a modified index.hbs!"]);
}
#[test]
fn no_index_for_print_html() {
let temp = DummyBook::new().build().unwrap();
let md = MDBook::load(temp.path()).unwrap();
md.build().unwrap();
let print_html = temp.path().join("book/print.html");
assert_contains_strings(print_html, &[r##"noindex"##]);
let index_html = temp.path().join("book/index.html");
assert_doesnt_contain_strings(index_html, &[r##"noindex"##]);
}
#[cfg(feature = "search")]
mod search {
use crate::dummy_book::DummyBook;
use mdbook::utils::fs::file_to_string;
use mdbook::MDBook;
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use std::fs::File;
use std::path::Path;
fn read_book_index(root: &Path) -> serde_json::Value {
let index = root.join("book/searchindex.js");
let index = file_to_string(index).unwrap();
let index = index.trim_start_matches("Object.assign(window.search, ");
let index = index.trim_end_matches(");");
serde_json::from_str(&index).unwrap()
}
#[test]
#[allow(clippy::float_cmp)]
fn book_creates_reasonable_search_index() {
let temp = DummyBook::new().build().unwrap();
let md = MDBook::load(temp.path()).unwrap();
md.build().unwrap();
let index = read_book_index(temp.path());
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let doc_urls = index["doc_urls"].as_array().unwrap();
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let get_doc_ref =
|url: &str| -> String { doc_urls.iter().position(|s| s == url).unwrap().to_string() };
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let first_chapter = get_doc_ref("first/index.html#first-chapter");
let introduction = get_doc_ref("intro.html#introduction");
let some_section = get_doc_ref("first/index.html#some-section");
let summary = get_doc_ref("first/includes.html#summary");
let conclusion = get_doc_ref("conclusion.html#conclusion");
let bodyidx = &index["index"]["index"]["body"]["root"];
let textidx = &bodyidx["t"]["e"]["x"]["t"];
assert_eq!(textidx["df"], 2);
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assert_eq!(textidx["docs"][&first_chapter]["tf"], 1.0);
assert_eq!(textidx["docs"][&introduction]["tf"], 1.0);
let docs = &index["index"]["documentStore"]["docs"];
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assert_eq!(docs[&first_chapter]["body"], "more text.");
assert_eq!(docs[&some_section]["body"], "");
assert_eq!(
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docs[&summary]["body"],
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"Dummy Book Introduction First Chapter Nested Chapter Includes Recursive Second Chapter Nested Chapter Conclusion"
);
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assert_eq!(docs[&summary]["breadcrumbs"], "First Chapter » Summary");
assert_eq!(docs[&conclusion]["body"], "I put &lt;HTML&gt; in here!");
}
// Setting this to `true` may cause issues with `cargo watch`,
// since it may not finish writing the fixture before the tests
// are run again.
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const GENERATE_FIXTURE: bool = false;
fn get_fixture() -> serde_json::Value {
if GENERATE_FIXTURE {
let temp = DummyBook::new().build().unwrap();
let md = MDBook::load(temp.path()).unwrap();
md.build().unwrap();
let src = read_book_index(temp.path());
let dest = Path::new(env!("CARGO_MANIFEST_DIR")).join("tests/searchindex_fixture.json");
let dest = File::create(&dest).unwrap();
serde_json::to_writer_pretty(dest, &src).unwrap();
src
} else {
let json = include_str!("searchindex_fixture.json");
serde_json::from_str(json).expect("Unable to deserialize the fixture")
}
}
// So you've broken the test. If you changed dummy_book, it's probably
// safe to regenerate the fixture. If you haven't then make sure that the
// search index still works. Run `cargo run -- serve tests/dummy_book`
// and try some searches. Are you getting results? Do the teasers look OK?
// Are there new errors in the JS console?
//
// If you're pretty sure you haven't broken anything, change `GENERATE_FIXTURE`
// above to `true`, and run `cargo test` to generate a new fixture. Then
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// **change it back to `false`**. Include the changed `searchindex_fixture.json` in your commit.
#[test]
fn search_index_hasnt_changed_accidentally() {
let temp = DummyBook::new().build().unwrap();
let md = MDBook::load(temp.path()).unwrap();
md.build().unwrap();
let book_index = read_book_index(temp.path());
let fixture_index = get_fixture();
// Uncomment this if you're okay with pretty-printing 32KB of JSON
//assert_eq!(fixture_index, book_index);
if book_index != fixture_index {
panic!("The search index has changed from the fixture");
}
}
}