140 lines
4.6 KiB
Rust
140 lines
4.6 KiB
Rust
//! This will create an entire book in a temporary directory using some
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//! dummy contents from the `tests/dummy-book/` directory.
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// Not all features are used in all test crates, so...
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#![allow(dead_code, unused_variables, unused_imports, unused_extern_crates)]
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use mdbook::errors::*;
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use std::fs::{self, File};
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use std::io::{Read, Write};
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use std::path::Path;
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use mdbook::MDBook;
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use tempfile::{Builder as TempFileBuilder, TempDir};
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use walkdir::WalkDir;
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/// Create a dummy book in a temporary directory, using the contents of
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/// `SUMMARY_MD` as a guide.
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///
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/// The "Nested Chapter" file contains a code block with a single
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/// `assert!($TEST_STATUS)`. If you want to check MDBook's testing
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/// functionality, `$TEST_STATUS` can be substitute for either `true` or
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/// `false`. This is done using the `passing_test` parameter.
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#[derive(Clone, Debug, PartialEq)]
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pub struct DummyBook {
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passing_test: bool,
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}
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impl DummyBook {
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/// Create a new `DummyBook` with all the defaults.
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pub fn new() -> DummyBook {
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DummyBook { passing_test: true }
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}
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/// Whether the doc-test included in the "Nested Chapter" should pass or
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/// fail (it passes by default).
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pub fn with_passing_test(&mut self, test_passes: bool) -> &mut DummyBook {
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self.passing_test = test_passes;
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self
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}
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/// Write a book to a temporary directory using the provided settings.
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pub fn build(&self) -> Result<TempDir> {
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let temp = TempFileBuilder::new()
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.prefix("dummy_book-")
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.tempdir()
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.chain_err(|| "Unable to create temp directory")?;
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let dummy_book_root = Path::new(env!("CARGO_MANIFEST_DIR")).join("tests/dummy_book");
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recursive_copy(&dummy_book_root, temp.path()).chain_err(|| {
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"Couldn't copy files into a \
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temporary directory"
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})?;
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let sub_pattern = if self.passing_test { "true" } else { "false" };
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let files_containing_tests = ["src/first/nested.md", "src/first/nested-test.rs"];
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for file in &files_containing_tests {
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let path_containing_tests = temp.path().join(file);
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replace_pattern_in_file(&path_containing_tests, "$TEST_STATUS", sub_pattern)?;
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}
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Ok(temp)
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}
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}
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fn replace_pattern_in_file(filename: &Path, from: &str, to: &str) -> Result<()> {
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let contents = fs::read_to_string(filename)?;
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File::create(filename)?.write_all(contents.replace(from, to).as_bytes())?;
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Ok(())
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}
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/// Read the contents of the provided file into memory and then iterate through
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/// the list of strings asserting that the file contains all of them.
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pub fn assert_contains_strings<P: AsRef<Path>>(filename: P, strings: &[&str]) {
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let filename = filename.as_ref();
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let content = fs::read_to_string(filename).expect("Couldn't read the file's contents");
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for s in strings {
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assert!(
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content.contains(s),
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"Searching for {:?} in {}\n\n{}",
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s,
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filename.display(),
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content
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);
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}
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}
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pub fn assert_doesnt_contain_strings<P: AsRef<Path>>(filename: P, strings: &[&str]) {
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let filename = filename.as_ref();
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let content = fs::read_to_string(filename).expect("Couldn't read the file's contents");
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for s in strings {
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assert!(
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!content.contains(s),
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"Found {:?} in {}\n\n{}",
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s,
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filename.display(),
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content
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);
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}
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}
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/// Recursively copy an entire directory tree to somewhere else (a la `cp -r`).
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fn recursive_copy<A: AsRef<Path>, B: AsRef<Path>>(from: A, to: B) -> Result<()> {
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let from = from.as_ref();
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let to = to.as_ref();
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for entry in WalkDir::new(&from) {
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let entry = entry.chain_err(|| "Unable to inspect directory entry")?;
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let original_location = entry.path();
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let relative = original_location
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.strip_prefix(&from)
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.expect("`original_location` is inside the `from` directory");
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let new_location = to.join(relative);
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if original_location.is_file() {
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if let Some(parent) = new_location.parent() {
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fs::create_dir_all(parent).chain_err(|| "Couldn't create directory")?;
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}
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fs::copy(&original_location, &new_location)
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.chain_err(|| "Unable to copy file contents")?;
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}
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}
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Ok(())
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}
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pub fn new_copy_of_example_book() -> Result<TempDir> {
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let temp = TempFileBuilder::new().prefix("book-example").tempdir()?;
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let book_example = Path::new(env!("CARGO_MANIFEST_DIR")).join("book-example");
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recursive_copy(book_example, temp.path())?;
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Ok(temp)
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}
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