feat(fs): add .reader().bytes()
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3 changed files with 39 additions and 1 deletions
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@ -10,7 +10,7 @@ Provides injectable Filesystem and Network resources to make code more testable.
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- [x] `std::fs::create_dir_all` - `dir(path).create_all()` - Recursively create a directory and all of its parent components if they are missing.
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- [ ] `std::fs::hard_link` - `link(path)create()` - Creates a new hard link on the filesystem.
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- [ ] `std::fs::metadata` - `path(path).metadata()` - Given a path, query the file system to get information about a file, directory, etc.
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- [ ] `std::fs::read` - `file(path).reader().bytes()` - Read the entire contents of a file into a bytes vector.
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- [x] `std::fs::read` - `file(path).reader().bytes()` - Read the entire contents of a file into a bytes vector.
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- [x] `std::fs::read_dir` - `dir(path).read()` - Returns an iterator over the entries within a directory.
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- [ ] `std::fs::read_link` - `link(path).read()` - Reads a symbolic link, returning the file that the link points to.
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- [x] `std::fs::read_to_string` - `file(path).reader().to_string()` - Read the entire contents of a file into a string.
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@ -65,6 +65,23 @@ impl Reader {
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pub fn lines(&self) -> Lines<'_> {
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self.contents.lines()
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}
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/// Returns the contents of the file as bytes.
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///
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/// ```
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/// # use kxio::fs::Result;
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/// # fn main() -> Result<()> {
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/// let fs = kxio::fs::temp()?;
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/// let path = fs.base().join("foo");
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/// let file = fs.file(&path);
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/// # file.write("new file contents")?;
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/// let bytes = file.reader()?.bytes();
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/// # Ok(())
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/// # }
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/// ```
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pub fn bytes(&self) -> &[u8] {
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self.contents.as_bytes()
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}
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}
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impl Display for Reader {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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21
tests/fs.rs
21
tests/fs.rs
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@ -403,3 +403,24 @@ mod copy {
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Ok(())
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}
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}
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mod reader {
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use super::*;
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mod bytes {
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use super::*;
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#[test]
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fn should_return_bytes() -> TestResult {
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let fs = fs::temp().expect("temp fs");
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let path = fs.base().join("foo");
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let file = fs.file(&path);
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file.write("bar").expect("write");
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let reader = file.reader().expect("reader");
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let bytes = reader.bytes();
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assert_eq!(bytes.len(), 3);
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assert_eq!(bytes[0], b'b');
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assert_eq!(bytes[1], b'a');
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assert_eq!(bytes[2], b'r');
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Ok(())
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}
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}
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}
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