openethereum/json-tests/src/lib.rs

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2015-12-02 21:49:57 +01:00
extern crate rustc_serialize;
extern crate glob;
use std::str::from_utf8;
use std::path::*;
use std::io::prelude::*;
use std::fs::File;
use glob::glob;
use rustc_serialize::*;
pub mod trie;
pub trait JsonTest: Sized {
type Input;
type Output;
fn new(data: &[u8]) -> Self;
fn input(&self) -> Self::Input;
fn output(&self) -> Self::Output;
}
pub struct JsonLoader {
json: json::Json
}
impl JsonTest for JsonLoader {
type Input = json::Json;
type Output = json::Json;
fn new(data: &[u8]) -> Self {
JsonLoader {
json: json::Json::from_str(from_utf8(data).unwrap()).unwrap()
}
}
fn input(&self) -> Self::Input {
self.json.as_object().unwrap()["input"].clone()
}
fn output(&self) -> Self::Output {
self.json.as_object().unwrap()["output"].clone()
}
}
pub fn execute_test<T, F>(data: &[u8], f: &mut F) where T: JsonTest, F: FnMut(T::Input, T::Output) {
let test = T::new(data);
f(test.input(), test.output())
}
pub fn execute_test_from_file<T, F>(path: &Path, f: &mut F) where T: JsonTest, F: FnMut(T::Input, T::Output) {
let mut file = File::open(path).unwrap();
let mut buffer = vec![];
let _ = file.read_to_end(&mut buffer);
let test = T::new(&buffer);
f(test.input(), test.output())
}
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pub fn execute_tests_from_directory<T, F>(pattern: &str, f: &mut F) where T: JsonTest, F: FnMut(String, T::Input, T::Output) {
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for path in glob(pattern).unwrap().filter_map(Result::ok) {
execute_test_from_file::<T, _>(&path, &mut | input, output | {
f(path.to_str().unwrap().to_string(), input, output);
});
}
}