Is it possible to have a macro that generates standalone tests? I have two text files, one with an input and another with an output. Each new line in the text file represents a new test. Currently, this is how I run my tests:
#[test]
fn it_works() {
let input = read_file("input.txt").expect("failed to read input");
let input = input.split("\n").collect::<Vec<_>>();
let output = read_file("output.txt").expect("failed to read output");
let output = output.split("\n").collect::<Vec<_>>();
input.iter().zip(output).for_each(|(a, b)| {
println!("a: {}, b: {}", a, b);
assert_eq!(b, get_result(a));
})
But, as you can see, if one test fail, all of them fail, since there's a loop inside a single test. And I need each iteration to be a single and isolated test, without having to repeat myself.
So I was wondering if it's possible to achieve that by using macros?
The macro ideally would output something like:
#[test]
fn it_works_1() {
let input = read_file("input.txt").expect("failed to read input");
let input = input.split("\n").collect::<Vec<_>>();
let output = read_file("output.txt").expect("failed to read output");
let output = output.split("\n").collect::<Vec<_>>();
assert_eq!(output[0], get_result(input[0])); // first test
}
#[test]
fn it_works_2() {
let input = read_file("input.txt").expect("failed to read input");
let input = input.split("\n").collect::<Vec<_>>();
let output = read_file("output.txt").expect("failed to read output");
let output = output.split("\n").collect::<Vec<_>>();
assert_eq!(output[1], get_result(input[1])); // second test
}
// ... the N remaining tests: it_works_n()
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