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build.rs
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build.rs
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use std::io::{BufWriter, Write};
use std::path::Path;
use std::{env, fs};
use walkdir::WalkDir;
static TEST_DATA: &str = "./tests/data/";
static TEST_TEMPLATE: &str = r#"
#[test]
fn {test_name}() {
let filename = Path::new("{filename}");
do_test(filename);
}
"#;
fn main() {
let out_dir = env::var_os("OUT_DIR").unwrap();
let dest_path = Path::new(&out_dir).join("test_files.rs");
let file = fs::File::create(dest_path).unwrap();
let mut buf = BufWriter::new(file);
println!("cargo:rerun-if-changed=build.rs");
println!("cargo:rerun-if-changed=./tests/test_runner.rs");
println!("cargo:rerun-if-changed={TEST_DATA}");
for entry in get_all_files() {
let filename = entry.path().to_str().unwrap();
if should_skip(filename) {
continue;
}
let test_name = filename
.replace("./", "")
.replace('/', "_")
.replace(".lox", "")
.replace("tests_data_", "");
let test_case =
TEST_TEMPLATE.replace("{test_name}", &test_name).replace("{filename}", filename);
write!(&mut buf, "{test_case}").unwrap();
}
}
fn get_all_files() -> Vec<walkdir::DirEntry> {
WalkDir::new(TEST_DATA)
.into_iter()
.filter_map(|o| o.ok())
.filter(|e| e.file_type().is_file())
.collect()
}
fn should_skip(filename: &str) -> bool {
// We don't run benchmarks as part of the tests. Also, tests in 'limit' are Java
// specific and need changes. For example, there is no "Stack overflow"
// exception in Rust and we need to deal with Rust's stack overflow panics.
let skip_list = vec!["benchmark/", "limit/"];
for s in skip_list {
if filename.contains(s) {
return true;
}
}
false
}