Struct TextFileReader

pub struct TextFileReader<'a> { /* private fields */ }

Implementations

impl<'a> TextFileReader<'a>

TextFileReader simplifies reading a file for assertions. The struct implements PartialEq and fmt::Debug to simplify debugging.

Usage

use std::fs::OpenOptions;
use std::path::Path;
use hide_glue::file_reader::TextFileReader;

let test_output_path = Path::new("/temporary/file/path");
let expected_output_path = Path::new("tests/fixtures/expected.txt");
let test_output = OpenOptions::new()
    .write(true)
    .create_new(true)
    .open(test_output_path).unwrap();

// write some text to the file; don't forget to flush the buffers!

assert_eq!(
    TextFileReader::new(test_output_path)
        .expect("Failed to read test_output_path file"),
    TextFileReader::new(expected_output_path)
        .expect("Failed to read expected_output_path file")
);

pub fn new(filepath: &'a Path) -> Result<Self, Box<dyn Error>>

Open the file and record its length.

Trait Implementations

impl Debug for TextFileReader<'_>

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl PartialEq for TextFileReader<'_>

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.