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use std::path;
/// Access paths within [`TempDir`][crate::TempDir] for testing.
///
/// See [`ChildPath`] trait implementations.
///
/// ```rust
/// use assert_fs::prelude::*;
///
/// let temp = assert_fs::TempDir::new().unwrap();
/// let input_file = temp.child("foo.txt");
/// input_file.touch().unwrap();
/// temp.close().unwrap();
/// ```
///
pub trait PathChild {
/// Access a path within the temp directory.
///
/// # Examples
///
/// ```rust
/// use assert_fs::prelude::*;
///
/// let temp = assert_fs::TempDir::new().unwrap();
/// println!("{}", temp.path().display());
/// println!("{}", temp.child("foo/bar.txt").path().display());
/// temp.close().unwrap();
/// ```
fn child<P>(&self, path: P) -> ChildPath
where
P: AsRef<path::Path>;
}
impl PathChild for super::TempDir {
fn child<P>(&self, path: P) -> ChildPath
where
P: AsRef<path::Path>,
{
ChildPath::new(self.path().join(path.as_ref()))
}
}
impl PathChild for ChildPath {
fn child<P>(&self, path: P) -> ChildPath
where
P: AsRef<path::Path>,
{
ChildPath::new(self.path().join(path.as_ref()))
}
}
/// A path within a [`TempDir`][crate::TempDir]
///
/// See Trait Implementations.
///
/// # Examples
///
/// ```rust
/// use assert_fs::prelude::*;
///
/// let temp = assert_fs::TempDir::new().unwrap();
///
/// let input_file = temp.child("foo.txt");
/// input_file.touch().unwrap();
///
/// temp.child("bar.txt").touch().unwrap();
///
/// temp.close().unwrap();
/// ```
///
pub struct ChildPath {
path: path::PathBuf,
}
impl ChildPath {
/// Wrap a path for use with extension traits.
///
/// See trait implementations or [`PathChild`] for more details.
///
pub fn new<P>(path: P) -> Self
where
P: Into<path::PathBuf>,
{
Self { path: path.into() }
}
/// Access the path.
pub fn path(&self) -> &path::Path {
&self.path
}
}
impl AsRef<path::Path> for ChildPath {
fn as_ref(&self) -> &path::Path {
&self.path
}
}
impl std::ops::Deref for ChildPath {
type Target = path::Path;
#[inline]
fn deref(&self) -> &path::Path {
&self.path
}
}