autogenerate test suite

interpreter/build.rs

@@ -0,0 +1,48 @@
+use std::path::PathBuf;
+
+use glob::glob;
+
+fn main() {
+    generate_tests();
+}
+
+fn build_test_case(path: PathBuf) -> String {
+    let mut test_name = path.clone();
+    test_name.set_extension("");
+
+    let mut components = test_name.components();
+
+    components.next();
+    components.next();
+
+    let mut test_name = components.as_path().to_str().unwrap().to_owned();
+
+    test_name = test_name.replace('/', "_");
+
+    format!(
+        "\n\n#[test]
+fn test_{}() {{
+    run_test(\"{}\");
+}}",
+        test_name,
+        path.to_str().unwrap()
+    )
+}
+
+fn generate_tests() {
+    let preamble = "mod common;\n\nuse common::run_test;";
+
+    let mut output = preamble.to_owned();
+
+    for lox_file in glob("tests/lox/**/*.lox").unwrap() {
+        let lox_file = lox_file.unwrap();
+
+        println!("found lox file: {}", lox_file.to_str().unwrap());
+
+        output += &build_test_case(lox_file);
+    }
+
+    println!("{output}");
+
+    std::fs::write("tests/all_tests.rs", output).unwrap();
+}