33 lines
1.4 KiB
Rust
33 lines
1.4 KiB
Rust
// ignore-windows: File handling is not implemented yet
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// compile-flags: -Zmiri-disable-isolation
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use std::fs::{File, remove_file};
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use std::io::{Read, Write, ErrorKind};
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fn main() {
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let path = std::env::temp_dir().join("miri_test_fs.txt");
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let bytes = b"Hello, World!\n";
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// Test creating, writing and closing a file (closing is tested when `file` is dropped).
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let mut file = File::create(&path).unwrap();
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// Writing 0 bytes should not change the file contents.
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file.write(&mut []).unwrap();
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file.write(bytes).unwrap();
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// Test opening, reading and closing a file.
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let mut file = File::open(&path).unwrap();
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let mut contents = Vec::new();
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// Reading 0 bytes should not move the file pointer.
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file.read(&mut []).unwrap();
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// Reading until EOF should get the whole text.
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file.read_to_end(&mut contents).unwrap();
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assert_eq!(bytes, contents.as_slice());
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// Removing file should succeed
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remove_file(&path).unwrap();
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// The two following tests also check that the `__errno_location()` shim is working properly.
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// Opening a non-existing file should fail with a "not found" error.
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assert_eq!(ErrorKind::NotFound, File::open(&path).unwrap_err().kind());
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// Removing a non-existing file should fail with a "not found" error.
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assert_eq!(ErrorKind::NotFound, remove_file(&path).unwrap_err().kind());
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}
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