feat(fs): add lines to reader

These have all been moved over to integration tests.
Integrtaion

justfile

@@ -1,3 +1,8 @@
+build:
+  cargo build
+  cargo test
+  cargo clippy
+
 install-hooks:
   @echo "Installing git hooks"
   git config core.hooksPath .git-hooks

src/filesystem.rs

@@ -1,167 +0,0 @@
-#![allow(deprecated)]
-
-use std::{
-    ops::Deref,
-    path::PathBuf,
-    sync::{Arc, Mutex},
-};
-
-use tempfile::{tempdir, TempDir};
-use tracing::{debug, info};
-
-pub fn real(cwd: Option<PathBuf>) -> FileSystem {
-    let cwd = cwd.unwrap_or_default();
-    FileSystem::Real(RealFileSystem::new(cwd))
-}
-pub fn temp() -> std::io::Result<FileSystem> {
-    TempFileSystem::new().map(FileSystem::Temp)
-}
-
-#[derive(Clone, Debug)]
-#[deprecated(since = "1.1.0", note = "Use [kxio::fs::FileSystem] instead")]
-pub enum FileSystem {
-    Real(RealFileSystem),
-    Temp(TempFileSystem),
-}
-impl FileSystem {
-    #[deprecated(since = "1.1.0", note = "Use [kxio::filesystem::real()] instead")]
-    pub fn new_real(cwd: Option<PathBuf>) -> Self {
-        real(cwd)
-    }
-    #[deprecated(since = "1.1.0", note = "Use [kxio::filesystem::temp()] instead")]
-    pub fn new_temp() -> std::io::Result<Self> {
-        temp()
-    }
-}
-impl Deref for FileSystem {
-    type Target = dyn FileSystemLike;
-
-    fn deref(&self) -> &Self::Target {
-        match self {
-            Self::Real(env) => env,
-            Self::Temp(env) => env,
-        }
-    }
-}
-
-pub trait FileSystemLike: Sync + Send + std::fmt::Debug {
-    fn cwd(&self) -> &PathBuf;
-
-    fn in_cwd(&self, name: &str) -> PathBuf {
-        self.cwd().join(name)
-    }
-
-    fn write_file(&self, file_name: &str, content: &str) -> std::io::Result<PathBuf> {
-        use std::fs::File;
-        use std::io::{LineWriter, Write};
-
-        let path = self.in_cwd(file_name);
-        debug!("writing to {:?}", path);
-        let file = File::create(path.clone())?;
-        let mut file = LineWriter::new(file);
-        file.write_all(content.as_bytes())?;
-        Ok(path)
-    }
-
-    fn file_exists(&self, name: &PathBuf) -> bool {
-        use std::fs::File;
-        File::open(name).is_ok()
-    }
-
-    fn read_file(&self, file_name: &str) -> std::io::Result<String> {
-        use std::fs::File;
-        use std::io::Read;
-
-        let path = self.in_cwd(file_name);
-        debug!("reading from {:?}", path);
-        let mut file = File::open(path)?;
-        let mut content = String::new();
-        file.read_to_string(&mut content)?;
-        Ok(content)
-    }
-}
-
-#[derive(Clone, Debug, Default)]
-pub struct RealFileSystem {
-    cwd: PathBuf,
-}
-
-#[derive(Clone, Debug)]
-pub struct TempFileSystem {
-    cwd: PathBuf,
-
-    // Handle to the temporary directory
-    // When this handle is dropped the directory is deleted
-    _temp_dir: Arc<Mutex<TempDir>>,
-}
-
-impl FileSystemLike for TempFileSystem {
-    fn cwd(&self) -> &PathBuf {
-        &self.cwd
-    }
-}
-
-impl FileSystemLike for RealFileSystem {
-    fn cwd(&self) -> &PathBuf {
-        &self.cwd
-    }
-}
-
-impl RealFileSystem {
-    const fn new(cwd: PathBuf) -> Self {
-        Self { cwd }
-    }
-}
-
-impl TempFileSystem {
-    fn new() -> std::io::Result<Self> {
-        let temp_dir = tempdir()?;
-        info!("temp dir: {:?}", temp_dir.path());
-        let cwd = temp_dir.path().to_path_buf();
-        let temp_dir = Arc::new(Mutex::new(temp_dir));
-        Ok(Self {
-            cwd,
-            _temp_dir: temp_dir,
-        })
-    }
-}
-
-#[cfg(test)]
-mod tests {
-
-    use super::*;
-
-    use std::path::PathBuf;
-
-    #[test_log::test]
-    fn test_cwd() {
-        let cwd = PathBuf::from("/tmp");
-        let env = RealFileSystem::new(cwd.clone());
-        assert_eq!(env.cwd(), &cwd);
-    }
-
-    #[test_log::test]
-    fn test_create_on_temp_fs() -> std::io::Result<()> {
-        let env = TempFileSystem::new()?;
-        assert!(env.cwd().exists());
-        Ok(())
-    }
-
-    #[test_log::test]
-    fn test_create_on_real_fs() {
-        let cwd = PathBuf::from("/tmp");
-        let env = RealFileSystem::new(cwd.clone());
-        assert_eq!(env.cwd(), &cwd);
-    }
-
-    #[test_log::test]
-    fn test_write_and_read_file() -> std::io::Result<()> {
-        let env = TempFileSystem::new()?;
-        let file_name = "test.txt";
-        let content = "Hello, World!";
-        let path = env.write_file(file_name, content)?;
-        assert_eq!(env.read_file(file_name)?, content);
-        assert!(path.exists());
-        Ok(())
-    }
-}

src/fs/mod.rs

@@ -1,39 +1,18 @@
 use std::path::PathBuf;
 
-use derive_more::From;
-
+mod dir_item;
 mod real;
+mod result;
 mod temp;
 
-mod dir_item;
 pub use dir_item::DirItem;
 pub use dir_item::DirItemIterator;
-use real::FileSystem;
-use temp::TempFileSystem;
+pub use result::{Error, Result};
 
-#[derive(Debug, From, derive_more::Display)]
-pub enum Error {
-    Io(std::io::Error),
-
-    #[display("Path access attempted outside of base ({base:?}): {path:?}")]
-    PathTraversal {
-        base: PathBuf,
-        path: PathBuf,
-    },
-
-    #[display("Path must be a directory: {path:?}")]
-    NotADirectory {
-        path: PathBuf,
-    },
-}
-impl std::error::Error for Error {}
-
-pub type Result<T> = core::result::Result<T, Error>;
-
-pub const fn new(base: PathBuf) -> FileSystem {
-    real::new(base)
+pub const fn new(base: PathBuf) -> real::FileSystem {
+    real::FileSystem::new(base)
 }
 
-pub fn temp() -> Result<TempFileSystem> {
-    temp::new()
+pub fn temp() -> Result<temp::TempFileSystem> {
+    temp::TempFileSystem::new()
 }

src/fs/real.rs

@@ -1,247 +0,0 @@
-use std::{
-    fmt::Display,
-    path::{Path, PathBuf},
-};
-
-use crate::fs::DirItem;
-
-use super::{DirItemIterator, Result};
-
-pub const fn new(base: PathBuf) -> FileSystem {
-    FileSystem { base }
-}
-
-#[derive(Clone, Debug)]
-pub struct FileSystem {
-    base: PathBuf,
-}
-impl FileSystem {
-    pub fn base(&self) -> &Path {
-        &self.base
-    }
-
-    pub fn path_of(&self, path: PathBuf) -> Result<PathBuf> {
-        let path_of = self.base.as_path().join(path);
-        self.validate(&path_of)?;
-        Ok(path_of)
-    }
-
-    pub fn dir<'base, 'path>(&'base self, path: &'path Path) -> DirReal<'base, 'path> {
-        DirReal::new(self.base(), path)
-    }
-
-    pub fn file<'base, 'path>(&'base self, path: &'path Path) -> FileReal<'base, 'path> {
-        FileReal::new(self.base(), path)
-    }
-
-    pub fn path<'base, 'path>(&'base self, path: &'path Path) -> PathReal<'base, 'path> {
-        PathReal::new(self.base(), path)
-    }
-
-    fn validate(&self, path: &Path) -> Result<()> {
-        let path = self.clean_path(path)?;
-        if !path.starts_with(&self.base) {
-            return Err(super::Error::PathTraversal {
-                base: self.base.clone(),
-                path,
-            });
-        }
-        Ok(())
-    }
-
-    fn clean_path(&self, path: &Path) -> Result<PathBuf> {
-        // let path = path.as_ref();
-        use path_clean::PathClean;
-        let abs_path = if path.is_absolute() {
-            path.to_path_buf()
-        } else {
-            std::env::current_dir()?.join(path)
-        }
-        .clean();
-        Ok(abs_path)
-    }
-}
-
-pub struct DirReal<'base, 'path> {
-    path: PathReal<'base, 'path>,
-}
-impl<'base, 'path> DirReal<'base, 'path> {
-    fn new(base: &'base Path, path: &'path Path) -> Self {
-        let mut path = PathReal::new(base, path);
-        if path.error.is_none() {
-            if let Ok(exists) = path.exists() {
-                if exists {
-                    if let Ok(is_dir) = path.is_dir() {
-                        if !is_dir {
-                            path.put(super::Error::NotADirectory {
-                                path: path.full_path(),
-                            })
-                        }
-                    }
-                }
-            }
-        }
-        Self { path }
-    }
-
-    pub fn create(&mut self) -> Result<()> {
-        self.path.check_error()?;
-        std::fs::create_dir(self.path.full_path()).map_err(Into::into)
-    }
-
-    pub fn create_all(&mut self) -> Result<()> {
-        self.path.check_error()?;
-        std::fs::create_dir_all(self.path.full_path()).map_err(Into::into)
-    }
-
-    pub fn read(&mut self) -> Result<Box<dyn Iterator<Item = Result<DirItem>>>> {
-        self.path.check_error()?;
-        let read_dir = std::fs::read_dir(self.path.full_path())?;
-        Ok(Box::new(DirItemIterator::new(read_dir)))
-    }
-
-    pub fn exists(&mut self) -> Result<bool> {
-        self.path.check_error()?;
-        self.path.exists()
-    }
-
-    pub fn is_dir(&mut self) -> Result<bool> {
-        self.path.check_error()?;
-        Ok(true)
-    }
-
-    pub fn is_file(&mut self) -> Result<bool> {
-        self.path.check_error()?;
-        Ok(false)
-    }
-}
-pub struct FileReal<'base, 'path> {
-    path: PathReal<'base, 'path>,
-}
-impl<'base, 'path> FileReal<'base, 'path> {
-    fn new(base: &'base Path, path: &'path Path) -> Self {
-        Self {
-            path: PathReal::new(base, path),
-        }
-    }
-
-    pub fn reader(&mut self) -> Result<ReaderReal> {
-        self.path.check_error()?;
-        ReaderReal::new(&self.path.full_path())
-    }
-
-    pub fn write(&mut self, contents: &str) -> Result<()> {
-        self.path.check_error()?;
-        std::fs::write(self.path.full_path(), contents).map_err(Into::into)
-    }
-
-    pub fn exists(&mut self) -> Result<bool> {
-        self.path.check_error()?;
-        self.path.exists()
-    }
-
-    pub fn is_dir(&mut self) -> Result<bool> {
-        self.path.check_error()?;
-        Ok(false)
-    }
-
-    pub fn is_file(&mut self) -> Result<bool> {
-        self.path.check_error()?;
-        Ok(true)
-    }
-}
-#[derive(Debug)]
-pub struct PathReal<'base, 'path> {
-    base: &'base Path,
-    path: &'path Path,
-    error: Option<super::Error>,
-}
-impl<'base, 'path> PathReal<'base, 'path> {
-    fn full_path(&self) -> PathBuf {
-        self.base.join(self.path)
-    }
-    fn put(&mut self, error: super::Error) {
-        if self.error.is_none() {
-            self.error.replace(error);
-        }
-    }
-    fn validate(base: &Path, path: &Path) -> Option<super::Error> {
-        match PathReal::clean_path(path) {
-            Err(error) => Some(error),
-            Ok(path) => {
-                if !path.starts_with(base) {
-                    return Some(super::Error::PathTraversal {
-                        base: base.to_path_buf(),
-                        path,
-                    });
-                }
-                None
-            }
-        }
-    }
-
-    fn clean_path(path: &Path) -> Result<PathBuf> {
-        // let path = path.as_ref();
-        use path_clean::PathClean;
-        let abs_path = if path.is_absolute() {
-            path.to_path_buf()
-        } else {
-            std::env::current_dir().expect("current_dir").join(path)
-        }
-        .clean();
-        Ok(abs_path)
-    }
-
-    fn new(base: &'base Path, path: &'path Path) -> Self {
-        Self {
-            base,
-            path,
-            error: PathReal::validate(base, path),
-        }
-    }
-
-    pub fn exists(&mut self) -> Result<bool> {
-        self.check_error()?;
-        Ok(self.full_path().exists())
-    }
-
-    fn check_error(&mut self) -> Result<()> {
-        if let Some(error) = self.error.take() {
-            return Err(error);
-        }
-        Ok(())
-    }
-
-    pub fn is_dir(&mut self) -> Result<bool> {
-        self.check_error()?;
-        Ok(self.full_path().is_dir())
-    }
-
-    pub fn is_file(&mut self) -> Result<bool> {
-        self.check_error()?;
-        Ok(self.full_path().is_file())
-    }
-}
-impl From<PathReal<'_, '_>> for PathBuf {
-    fn from(path: PathReal) -> Self {
-        path.base.join(path.path)
-    }
-}
-pub struct ReaderReal {
-    contents: String,
-}
-impl ReaderReal {
-    fn new(path: &Path) -> Result<Self> {
-        let contents = std::fs::read_to_string(path)?;
-        Ok(Self { contents })
-    }
-
-    pub fn as_str(&self) -> &str {
-        &self.contents
-    }
-}
-impl Display for ReaderReal {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "{}", self.contents)
-    }
-}

src/fs/real/dir.rs

@@ -0,0 +1,64 @@
+//
+use std::path::{Path, PathBuf};
+
+use crate::fs::{DirItem, DirItemIterator, Error, Result};
+
+use super::path::PathReal;
+
+pub struct DirReal<'base, 'path> {
+    path: PathReal<'base, 'path>,
+}
+impl<'base, 'path> DirReal<'base, 'path> {
+    pub(super) fn new(base: &'base Path, path: &'path Path) -> Self {
+        let mut path = PathReal::new(base, path);
+        if path.error.is_none() {
+            if let Ok(exists) = path.exists() {
+                if exists {
+                    if let Ok(is_dir) = path.is_dir() {
+                        if !is_dir {
+                            path.put(Error::NotADirectory {
+                                path: path.full_path(),
+                            })
+                        }
+                    }
+                }
+            }
+        }
+        Self { path }
+    }
+
+    pub fn path(&self) -> PathBuf {
+        self.path.full_path()
+    }
+
+    pub fn create(&mut self) -> Result<()> {
+        self.path.check_error()?;
+        std::fs::create_dir(self.path.full_path()).map_err(Into::into)
+    }
+
+    pub fn create_all(&mut self) -> Result<()> {
+        self.path.check_error()?;
+        std::fs::create_dir_all(self.path.full_path()).map_err(Into::into)
+    }
+
+    pub fn read(&mut self) -> Result<Box<dyn Iterator<Item = Result<DirItem>>>> {
+        self.path.check_error()?;
+        let read_dir = std::fs::read_dir(self.path.full_path())?;
+        Ok(Box::new(DirItemIterator::new(read_dir)))
+    }
+
+    pub fn exists(&mut self) -> Result<bool> {
+        self.path.check_error()?;
+        self.path.exists()
+    }
+
+    pub fn is_dir(&mut self) -> Result<bool> {
+        self.path.check_error()?;
+        Ok(true)
+    }
+
+    pub fn is_file(&mut self) -> Result<bool> {
+        self.path.check_error()?;
+        Ok(false)
+    }
+}

src/fs/real/file.rs

@@ -0,0 +1,46 @@
+//
+use std::path::{Path, PathBuf};
+
+use crate::fs::Result;
+
+use super::{path::PathReal, reader::ReaderReal};
+
+pub struct FileReal<'base, 'path> {
+    path: PathReal<'base, 'path>,
+}
+impl<'base, 'path> FileReal<'base, 'path> {
+    pub(super) fn new(base: &'base Path, path: &'path Path) -> Self {
+        Self {
+            path: PathReal::new(base, path),
+        }
+    }
+
+    pub fn path(&self) -> PathBuf {
+        self.path.full_path()
+    }
+
+    pub fn reader(&mut self) -> Result<ReaderReal> {
+        self.path.check_error()?;
+        ReaderReal::new(&self.path.full_path())
+    }
+
+    pub fn write(&mut self, contents: &str) -> Result<()> {
+        self.path.check_error()?;
+        std::fs::write(self.path.full_path(), contents).map_err(Into::into)
+    }
+
+    pub fn exists(&mut self) -> Result<bool> {
+        self.path.check_error()?;
+        self.path.exists()
+    }
+
+    pub fn is_dir(&mut self) -> Result<bool> {
+        self.path.check_error()?;
+        Ok(false)
+    }
+
+    pub fn is_file(&mut self) -> Result<bool> {
+        self.path.check_error()?;
+        Ok(true)
+    }
+}

src/fs/real/mod.rs

@@ -0,0 +1,8 @@
+//
+mod system;
+mod path;
+mod file;
+mod dir;
+mod reader;
+
+pub use system::FileSystem;

src/fs/real/path.rs

@@ -0,0 +1,102 @@
+//
+use std::path::{Path, PathBuf};
+
+use crate::fs::{Error, Result};
+
+use super::{dir::DirReal, file::FileReal};
+
+#[derive(Debug)]
+pub struct PathReal<'base, 'path> {
+    base: &'base Path,
+    path: &'path Path,
+    pub(super) error: Option<Error>,
+}
+impl<'base, 'path> PathReal<'base, 'path> {
+    pub(super) fn full_path(&self) -> PathBuf {
+        self.base.join(self.path)
+    }
+    pub(super) fn put(&mut self, error: Error) {
+        if self.error.is_none() {
+            self.error.replace(error);
+        }
+    }
+    fn validate(base: &Path, path: &Path) -> Option<Error> {
+        match PathReal::clean_path(path) {
+            Err(error) => Some(error),
+            Ok(path) => {
+                if !path.starts_with(base) {
+                    return Some(Error::PathTraversal {
+                        base: base.to_path_buf(),
+                        path,
+                    });
+                }
+                None
+            }
+        }
+    }
+
+    fn clean_path(path: &Path) -> Result<PathBuf> {
+        // let path = path.as_ref();
+        use path_clean::PathClean;
+        let abs_path = if path.is_absolute() {
+            path.to_path_buf()
+        } else {
+            std::env::current_dir().expect("current_dir").join(path)
+        }
+        .clean();
+        Ok(abs_path)
+    }
+
+    pub(super) fn new(base: &'base Path, path: &'path Path) -> Self {
+        Self {
+            base,
+            path,
+            error: PathReal::validate(base, path),
+        }
+    }
+
+    pub fn exists(&mut self) -> Result<bool> {
+        self.check_error()?;
+        Ok(self.full_path().exists())
+    }
+
+    pub(super) fn check_error(&mut self) -> Result<()> {
+        if let Some(error) = self.error.take() {
+            return Err(error);
+        }
+        Ok(())
+    }
+
+    pub fn is_dir(&mut self) -> Result<bool> {
+        self.check_error()?;
+        Ok(self.full_path().is_dir())
+    }
+
+    pub fn is_file(&mut self) -> Result<bool> {
+        self.check_error()?;
+        Ok(self.full_path().is_file())
+    }
+
+    pub fn as_dir(&mut self) -> Result<Option<DirReal<'base, 'path>>> {
+        self.check_error()?;
+        if self.full_path().is_dir() {
+            Ok(Some(DirReal::new(self.base, self.path)))
+        } else {
+            Ok(None)
+        }
+    }
+
+    pub fn as_file(&mut self) -> Result<Option<FileReal<'base, 'path>>> {
+        self.check_error()?;
+        if self.full_path().is_file() {
+            Ok(Some(FileReal::new(self.base, self.path)))
+        } else {
+            Ok(None)
+        }
+    }
+}
+impl From<PathReal<'_, '_>> for PathBuf {
+    fn from(path: PathReal) -> Self {
+        path.base.join(path.path)
+    }
+}

src/fs/real/reader.rs

@@ -0,0 +1,31 @@
+//
+use std::{
+    fmt::Display,
+    path::Path, str::Lines,
+};
+
+use crate::fs::Result;
+
+
+pub struct ReaderReal {
+    contents: String,
+}
+impl ReaderReal {
+    pub(super) fn new(path: &Path) -> Result<Self> {
+        let contents = std::fs::read_to_string(path)?;
+        Ok(Self { contents })
+    }
+
+    pub fn as_str(&self) -> &str {
+        &self.contents
+    }
+
+    pub fn lines(&self) -> Lines<'_> {
+        self.contents.lines()
+    }
+}
+impl Display for ReaderReal {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}", self.contents)
+    }
+}

src/fs/real/system.rs

@@ -0,0 +1,62 @@
+//
+use std::path::{Path, PathBuf};
+
+use crate::fs::{Error, Result};
+
+use super::{dir::DirReal, file::FileReal, path::PathReal};
+
+
+#[derive(Clone, Debug)]
+pub struct FileSystem {
+    base: PathBuf,
+}
+impl FileSystem {
+    pub const fn new(base: PathBuf) -> Self {
+        Self { base }
+    }
+    pub fn base(&self) -> &Path {
+        &self.base
+    }
+
+    pub fn path_of(&self, path: PathBuf) -> Result<PathBuf> {
+        let path_of = self.base.as_path().join(path);
+        self.validate(&path_of)?;
+        Ok(path_of)
+    }
+
+    pub fn dir<'base, 'path>(&'base self, path: &'path Path) -> DirReal<'base, 'path> {
+        DirReal::new(self.base(), path)
+    }
+
+    pub fn file<'base, 'path>(&'base self, path: &'path Path) -> FileReal<'base, 'path> {
+        FileReal::new(self.base(), path)
+    }
+
+    pub fn path<'base, 'path>(&'base self, path: &'path Path) -> PathReal<'base, 'path> {
+        PathReal::new(self.base(), path)
+    }
+
+    fn validate(&self, path: &Path) -> Result<()> {
+        let path = self.clean_path(path)?;
+        if !path.starts_with(&self.base) {
+            return Err(Error::PathTraversal {
+                base: self.base.clone(),
+                path,
+            });
+        }
+        Ok(())
+    }
+
+    fn clean_path(&self, path: &Path) -> Result<PathBuf> {
+        // let path = path.as_ref();
+        use path_clean::PathClean;
+        let abs_path = if path.is_absolute() {
+            path.to_path_buf()
+        } else {
+            std::env::current_dir()?.join(path)
+        }
+        .clean();
+        Ok(abs_path)
+    }
+}
+

src/fs/result.rs

@@ -0,0 +1,23 @@
+//
+use std::path::PathBuf;
+
+use derive_more::From;
+
+#[derive(Debug, From, derive_more::Display)]
+pub enum Error {
+    Io(std::io::Error),
+
+    #[display("Path access attempted outside of base ({base:?}): {path:?}")]
+    PathTraversal {
+        base: PathBuf,
+        path: PathBuf,
+    },
+
+    #[display("Path must be a directory: {path:?}")]
+    NotADirectory {
+        path: PathBuf,
+    },
+}
+impl std::error::Error for Error {}
+
+pub type Result<T> = core::result::Result<T, Error>;

src/fs/temp.rs

@@ -4,24 +4,24 @@ use tempfile::TempDir;
 
 use super::real::FileSystem;
 
-pub(super) fn new() -> super::Result<TempFileSystem> {
-    let temp_dir = tempfile::tempdir()?;
-    let base = temp_dir.path().to_path_buf();
-    let temp_dir = Arc::new(Mutex::new(temp_dir));
-    let real = super::real::new(base);
-
-    Ok(TempFileSystem {
-        real,
-        _temp_dir: temp_dir,
-    })
-}
-
 #[derive(Clone, Debug)]
 pub struct TempFileSystem {
     real: FileSystem,
     _temp_dir: Arc<Mutex<TempDir>>,
 }
+impl TempFileSystem {
+    pub fn new() -> super::Result<Self> {
+        let temp_dir = tempfile::tempdir()?;
+        let base = temp_dir.path().to_path_buf();
+        let temp_dir = Arc::new(Mutex::new(temp_dir));
+        let real = super::new(base);
 
+        Ok(Self {
+            real,
+            _temp_dir: temp_dir,
+        })
+    }
+}
 impl std::ops::Deref for TempFileSystem {
     type Target = FileSystem;
 

src/lib.rs

@@ -1,11 +1,6 @@
-#[cfg(feature = "fs")]
-pub mod filesystem;
-
+//
 #[cfg(feature = "fs")]
 pub mod fs;
 
 #[cfg(feature = "network")]
 pub mod network;
-
-#[cfg(test)]
-mod tests;

src/tests/filesystem.rs

@@ -1,12 +0,0 @@
-type TestResult = Result<(), Box<dyn std::error::Error>>;
-
-#[test]
-fn write_read_file_exists() -> TestResult {
-    let fs = crate::filesystem::temp()?;
-    let pathbuf = fs.write_file("foo", "content")?;
-    let c = fs.read_file("foo")?;
-    assert_eq!(c, "content");
-    assert!(fs.file_exists(&pathbuf));
-
-    Ok(())
-}

src/tests/mod.rs

@@ -1,8 +0,0 @@
-#[cfg(feature = "fs")]
-pub mod filesystem;
-
-#[cfg(feature = "fs")]
-pub mod fs;
-
-// #[cfg(feature = "network")]
-// pub mod network;

tests/fs.rs

@@ -1,6 +1,6 @@
 use assert2::let_assert;
 
-use crate::fs;
+use kxio::fs;
 
 type TestResult = Result<(), fs::Error>;
 
@@ -32,6 +32,65 @@ mod path_of {
     }
 }
 
+mod path {
+    use super::*;
+
+    #[test]
+    fn path_is_dir_as_dir_some() -> TestResult {
+        let fs = fs::temp().expect("temp fs");
+
+        let path = fs.base().join("foo");
+        let mut dir = fs.dir(&path);
+        dir.create().expect("create");
+
+        let_assert!(Ok(Some(as_dir)) = fs.path(&path).as_dir());
+
+        assert_eq!(dir.path(), as_dir.path());
+
+        Ok(())
+    }
+
+    #[test]
+    fn path_is_file_as_dir_none() -> TestResult {
+        let fs = fs::temp().expect("temp fs");
+
+        let path = fs.base().join("foo");
+        let mut file = fs.file(&path);
+        file.write("contents").expect("create");
+
+        let_assert!(Ok(Some(mut as_file)) = fs.path(&path).as_file());
+
+        assert_eq!(file.path(), as_file.path());
+        assert_eq!(as_file.reader().expect("reader").to_string(), "contents");
+
+        Ok(())
+    }
+    #[test]
+    fn path_is_dir_as_file_none() -> TestResult {
+        let fs = fs::temp().expect("temp fs");
+
+        let path = fs.base().join("foo");
+        let mut dir = fs.dir(&path);
+        dir.create().expect("create");
+
+        let_assert!(Ok(None) = fs.path(&path).as_file());
+
+        Ok(())
+    }
+    #[test]
+    fn path_is_file_as_file_some() -> TestResult {
+        let fs = fs::temp().expect("temp fs");
+
+        let path = fs.base().join("foo");
+        let mut file = fs.file(&path);
+        file.write("contents").expect("create");
+
+        let_assert!(Ok(None) = fs.path(&path).as_dir());
+
+        Ok(())
+    }
+}
+
 mod file {
     use super::*;
 
@@ -55,6 +114,22 @@ mod file {
 
         Ok(())
     }
+
+    #[test]
+    fn read_file_lines() -> TestResult {
+        let fs = fs::temp().expect("temp fs");
+
+        let path = fs.base().join("foo");
+        let mut file = fs.file(&path);
+        file.write("line 1\nline 2").expect("write");
+
+        let reader = file.reader().expect("reader");
+        let lines = reader.lines().collect::<Vec<_>>();
+
+        assert_eq!(lines, vec!["line 1", "line 2"]);
+
+        Ok(())
+    }
 }
 
 mod dir_create {