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//! Matchers for filesystem paths.
use std::path::{Path, PathBuf};
use crate::error::MatchError;
use crate::expectation::Expectation;
impl Expectation<PathBuf> {
/// Asserts the path exists on the filesystem.
///
/// # Errors
///
/// Returns [`MatchError`] if the path does not exist.
///
/// # Examples
///
/// ```
/// use std::path::PathBuf;
/// use behave::Expectation;
///
/// let path = PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("Cargo.toml");
/// let result = Expectation::new(path, "p").to_exist();
/// assert!(result.is_ok());
/// ```
pub fn to_exist(&self) -> Result<(), MatchError> {
self.check(self.value().exists(), "to exist")
}
/// Asserts the path points to a regular file.
///
/// # Errors
///
/// Returns [`MatchError`] if the path is not a file.
///
/// # Examples
///
/// ```
/// use std::path::PathBuf;
/// use behave::Expectation;
///
/// let path = PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("Cargo.toml");
/// let result = Expectation::new(path, "p").to_be_a_file();
/// assert!(result.is_ok());
/// ```
pub fn to_be_a_file(&self) -> Result<(), MatchError> {
self.check(self.value().is_file(), "to be a file")
}
/// Asserts the path points to a directory.
///
/// # Errors
///
/// Returns [`MatchError`] if the path is not a directory.
///
/// # Examples
///
/// ```
/// use std::path::PathBuf;
/// use behave::Expectation;
///
/// let path = PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("src");
/// let result = Expectation::new(path, "p").to_be_a_directory();
/// assert!(result.is_ok());
/// ```
pub fn to_be_a_directory(&self) -> Result<(), MatchError> {
self.check(self.value().is_dir(), "to be a directory")
}
/// Asserts the path has the given file extension.
///
/// The `ext` parameter should not include the leading dot.
///
/// # Errors
///
/// Returns [`MatchError`] if the extension does not match.
///
/// # Examples
///
/// ```
/// use std::path::PathBuf;
/// use behave::Expectation;
///
/// let path = PathBuf::from("src/main.rs");
/// let result = Expectation::new(path, "p").to_have_extension("rs");
/// assert!(result.is_ok());
/// ```
pub fn to_have_extension(&self, ext: &str) -> Result<(), MatchError> {
let is_match = self.value().extension().is_some_and(|e| e == ext);
self.check(is_match, format!("to have extension {ext:?}"))
}
/// Asserts the path has the given file name (including extension).
///
/// # Errors
///
/// Returns [`MatchError`] if the file name does not match.
///
/// # Examples
///
/// ```
/// use std::path::PathBuf;
/// use behave::Expectation;
///
/// let path = PathBuf::from("src/main.rs");
/// let result = Expectation::new(path, "p").to_have_file_name("main.rs");
/// assert!(result.is_ok());
/// ```
pub fn to_have_file_name(&self, name: &str) -> Result<(), MatchError> {
let is_match = self.value().file_name().is_some_and(|n| n == name);
self.check(is_match, format!("to have file name {name:?}"))
}
}
impl Expectation<&Path> {
/// Asserts the path exists on the filesystem.
///
/// # Errors
///
/// Returns [`MatchError`] if the path does not exist.
///
/// # Examples
///
/// ```
/// use std::path::Path;
/// use behave::Expectation;
///
/// let p = Path::new(env!("CARGO_MANIFEST_DIR"));
/// let result = Expectation::new(p, "p").to_exist();
/// assert!(result.is_ok());
/// ```
pub fn to_exist(&self) -> Result<(), MatchError> {
self.check(self.value().exists(), "to exist")
}
/// Asserts the path points to a regular file.
///
/// # Errors
///
/// Returns [`MatchError`] if the path is not a file.
///
/// # Examples
///
/// ```
/// use std::path::Path;
/// use behave::Expectation;
///
/// let p = Path::new("Cargo.toml");
/// let result = Expectation::new(p, "p").to_be_a_file();
/// assert!(result.is_ok());
/// ```
pub fn to_be_a_file(&self) -> Result<(), MatchError> {
self.check(self.value().is_file(), "to be a file")
}
/// Asserts the path points to a directory.
///
/// # Errors
///
/// Returns [`MatchError`] if the path is not a directory.
///
/// # Examples
///
/// ```
/// use std::path::Path;
/// use behave::Expectation;
///
/// let p = Path::new("src");
/// let result = Expectation::new(p, "p").to_be_a_directory();
/// assert!(result.is_ok());
/// ```
pub fn to_be_a_directory(&self) -> Result<(), MatchError> {
self.check(self.value().is_dir(), "to be a directory")
}
/// Asserts the path has the given file extension.
///
/// # Errors
///
/// Returns [`MatchError`] if the extension does not match.
///
/// # Examples
///
/// ```
/// use std::path::Path;
/// use behave::Expectation;
///
/// let p = Path::new("main.rs");
/// let result = Expectation::new(p, "p").to_have_extension("rs");
/// assert!(result.is_ok());
/// ```
pub fn to_have_extension(&self, ext: &str) -> Result<(), MatchError> {
let is_match = self.value().extension().is_some_and(|e| e == ext);
self.check(is_match, format!("to have extension {ext:?}"))
}
/// Asserts the path has the given file name (including extension).
///
/// # Errors
///
/// Returns [`MatchError`] if the file name does not match.
///
/// # Examples
///
/// ```
/// use std::path::Path;
/// use behave::Expectation;
///
/// let p = Path::new("main.rs");
/// let result = Expectation::new(p, "p").to_have_file_name("main.rs");
/// assert!(result.is_ok());
/// ```
pub fn to_have_file_name(&self, name: &str) -> Result<(), MatchError> {
let is_match = self.value().file_name().is_some_and(|n| n == name);
self.check(is_match, format!("to have file name {name:?}"))
}
}
#[cfg(test)]
mod tests {
use std::path::PathBuf;
use crate::Expectation;
fn manifest_dir() -> PathBuf {
PathBuf::from(env!("CARGO_MANIFEST_DIR"))
}
#[test]
fn to_exist_pass() {
let p = manifest_dir().join("Cargo.toml");
assert!(Expectation::new(p, "p").to_exist().is_ok());
}
#[test]
fn to_exist_fail() {
let p = manifest_dir().join("nonexistent_file_xyz");
assert!(Expectation::new(p, "p").to_exist().is_err());
}
#[test]
fn to_exist_negated() {
let p = manifest_dir().join("nonexistent_file_xyz");
assert!(Expectation::new(p, "p").negate().to_exist().is_ok());
}
#[test]
fn to_be_a_file_pass() {
let p = manifest_dir().join("Cargo.toml");
assert!(Expectation::new(p, "p").to_be_a_file().is_ok());
}
#[test]
fn to_be_a_file_fail_directory() {
let p = manifest_dir().join("src");
assert!(Expectation::new(p, "p").to_be_a_file().is_err());
}
#[test]
fn to_be_a_file_negated() {
let p = manifest_dir().join("src");
assert!(Expectation::new(p, "p").negate().to_be_a_file().is_ok());
}
#[test]
fn to_be_a_directory_pass() {
let p = manifest_dir().join("src");
assert!(Expectation::new(p, "p").to_be_a_directory().is_ok());
}
#[test]
fn to_be_a_directory_fail_file() {
let p = manifest_dir().join("Cargo.toml");
assert!(Expectation::new(p, "p").to_be_a_directory().is_err());
}
#[test]
fn to_be_a_directory_negated() {
let p = manifest_dir().join("Cargo.toml");
assert!(Expectation::new(p, "p")
.negate()
.to_be_a_directory()
.is_ok());
}
#[test]
fn to_have_extension_pass() {
let p = PathBuf::from("src/main.rs");
assert!(Expectation::new(p, "p").to_have_extension("rs").is_ok());
}
#[test]
fn to_have_extension_fail() {
let p = PathBuf::from("src/main.rs");
assert!(Expectation::new(p, "p").to_have_extension("txt").is_err());
}
#[test]
fn to_have_extension_negated() {
let p = PathBuf::from("src/main.rs");
assert!(Expectation::new(p, "p")
.negate()
.to_have_extension("txt")
.is_ok());
}
#[test]
fn to_have_extension_none() {
let p = PathBuf::from("Makefile");
assert!(Expectation::new(p, "p").to_have_extension("rs").is_err());
}
#[test]
fn to_have_file_name_pass() {
let p = PathBuf::from("src/main.rs");
assert!(Expectation::new(p, "p")
.to_have_file_name("main.rs")
.is_ok());
}
#[test]
fn to_have_file_name_fail() {
let p = PathBuf::from("src/main.rs");
assert!(Expectation::new(p, "p")
.to_have_file_name("lib.rs")
.is_err());
}
#[test]
fn to_have_file_name_negated() {
let p = PathBuf::from("src/main.rs");
assert!(Expectation::new(p, "p")
.negate()
.to_have_file_name("lib.rs")
.is_ok());
}
// --- &Path tests ---
#[test]
fn path_ref_to_exist_pass() {
let p = manifest_dir().join("Cargo.toml");
assert!(Expectation::new(p.as_path(), "p").to_exist().is_ok());
}
#[test]
fn path_ref_to_exist_fail() {
let p = manifest_dir().join("nonexistent_xyz");
assert!(Expectation::new(p.as_path(), "p").to_exist().is_err());
}
#[test]
fn path_ref_to_be_a_file_pass() {
let p = manifest_dir().join("Cargo.toml");
assert!(Expectation::new(p.as_path(), "p").to_be_a_file().is_ok());
}
#[test]
fn path_ref_to_be_a_file_fail() {
let p = manifest_dir().join("src");
assert!(Expectation::new(p.as_path(), "p").to_be_a_file().is_err());
}
#[test]
fn path_ref_to_be_a_directory_pass() {
let p = manifest_dir().join("src");
assert!(Expectation::new(p.as_path(), "p")
.to_be_a_directory()
.is_ok());
}
#[test]
fn path_ref_to_have_extension_pass() {
let p = std::path::Path::new("src/main.rs");
assert!(Expectation::new(p, "p").to_have_extension("rs").is_ok());
}
#[test]
fn path_ref_to_have_extension_fail() {
let p = std::path::Path::new("src/main.rs");
assert!(Expectation::new(p, "p").to_have_extension("txt").is_err());
}
#[test]
fn path_ref_to_have_file_name_pass() {
let p = std::path::Path::new("src/main.rs");
assert!(Expectation::new(p, "p")
.to_have_file_name("main.rs")
.is_ok());
}
#[test]
fn path_ref_to_have_file_name_fail() {
let p = std::path::Path::new("src/main.rs");
assert!(Expectation::new(p, "p")
.to_have_file_name("lib.rs")
.is_err());
}
}