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use std::convert::TryInto;
use std::error::Error;
use std::fs::File;
use std::path::Path;
use unic_langid_impl::LanguageIdentifier;
use serde::{Deserialize, Serialize};
#[derive(Serialize, Deserialize)]
struct LangIdTestInputData {
string: String,
}
#[derive(Serialize, Deserialize, Debug)]
struct LangIdTestOutputObject {
language: Option<String>,
script: Option<String>,
region: Option<String>,
#[serde(default)]
variants: Vec<String>,
}
#[derive(Serialize, Deserialize, Debug)]
#[serde(untagged)]
enum LangIdTestOutput {
String(String),
Object(LangIdTestOutputObject),
}
#[derive(Serialize, Deserialize)]
struct LangIdTestSet {
input: LangIdTestInputData,
output: LangIdTestOutput,
}
fn read_langid_testsets<P: AsRef<Path>>(path: P) -> Result<Vec<LangIdTestSet>, Box<dyn Error>> {
let file = File::open(path)?;
let sets = serde_json::from_reader(file)?;
Ok(sets)
}
fn test_langid_fixtures(path: &str) {
let tests = read_langid_testsets(path).unwrap();
for test in tests {
let s = test.input.string;
let langid: LanguageIdentifier = s.parse().expect("Parsing failed.");
match test.output {
LangIdTestOutput::Object(o) => {
let expected = LanguageIdentifier::from_parts(
o.language.try_into().unwrap(),
o.script.as_ref().map(|s| s.parse().unwrap()),
o.region.as_ref().map(|r| r.parse().unwrap()),
o.variants
.iter()
.map(|s| s.parse().unwrap())
.collect::<Vec<_>>()
.as_ref(),
);
assert_eq!(langid, expected);
}
LangIdTestOutput::String(s) => {
assert_eq!(langid.to_string(), s);
}
}
}
}
#[test]
fn parse() {
test_langid_fixtures("./tests/fixtures/parsing.json");
}