Add some imports tests

src/imports.rs

@@ -541,6 +541,12 @@ pub struct DefaultLoader {
   pub loaded: HashSet<Name>,
 }
 
+impl DefaultLoader {
+  pub fn new(local_path: PathBuf) -> Self {
+    Self { local_path, loaded: HashSet::new() }
+  }
+}
+
 impl PackageLoader for DefaultLoader {
   fn load(&mut self, name: Name, _import_type: &ImportType, pkgs: &mut Sources) -> Result<Vec<Name>, String> {
     if !self.is_loaded(&name) {

tests/golden_tests.rs

@@ -5,6 +5,8 @@ use bend::{
     load_book::do_parse_book_default, net_to_term::net_to_term, term_to_net::Labels, Book, Ctx, Name, Term,
   },
   hvm::hvm_book_show_pretty,
+  imports::DefaultLoader,
+  load_to_book,
   net::hvm_to_net::hvm_to_net,
   run_book, AdtEncoding, CompileOpts, RunOpts,
 };
@@ -69,7 +71,7 @@ fn run_golden_test_dir_multiple(test_name: &str, run: &[&RunFn]) {
     test_name.rsplit_once(':').unwrap().1
   ));
 
-  let walker = WalkDir::new(&root).sort_by_file_name().max_depth(2).into_iter().filter_entry(|e| {
+  let walker = WalkDir::new(&root).sort_by_file_name().max_depth(1).into_iter().filter_entry(|e| {
     let path = e.path();
     path == root || path.is_dir() || (path.is_file() && path.extension().is_some_and(|x| x == "bend"))
   });
@@ -186,6 +188,30 @@ fn run_file() {
   )
 }
 
+#[test]
+fn import_system() {
+  run_golden_test_dir_multiple(
+    function_name!(),
+    &[(&|code, path| {
+      let _guard = RUN_MUTEX.lock().unwrap();
+      let diagnostics_cfg = DiagnosticsConfig {
+        unused_definition: Severity::Allow,
+        ..DiagnosticsConfig::new(Severity::Error, true)
+      };
+
+      let book = load_to_book(path.display(), code, DefaultLoader::new(path.to_path_buf()), diagnostics_cfg)?;
+      let run_opts = RunOpts::default();
+
+      let mut res = String::new();
+
+      let compile_opts = CompileOpts::default();
+      let (term, _, diags) = run_book_simple(book, run_opts, compile_opts, diagnostics_cfg, None)?;
+      res.push_str(&format!("{diags}{term}\n\n"));
+      Ok(res)
+    })],
+  )
+}
+
 #[test]
 #[ignore = "while lazy execution is not implemented for hvm32"]
 fn run_lazy() {

tests/golden_tests/import_system/import_types.bend

@@ -0,0 +1,20 @@
+use lib/types{Bool, MyTree}
+use lib/bool_xor
+
+def tree_xor(tree):
+  fold tree:
+    case MyTree/node:
+      return bool_xor(tree.lft, tree.rgt);
+    case MyTree/leaf:
+      return tree.val;
+
+main =
+  let depth = 10
+  let tree = bend n = 0 {
+    when (< n depth):
+      (MyTree/node (fork (+ n 1)) (fork (+ n 1)))
+    else:
+      if (% n 2) { (MyTree/leaf Bool/True) } else { (MyTree/leaf Bool/False) }
+  }
+  (tree_xor tree)
+

tests/golden_tests/import_system/imports.bend

@@ -0,0 +1,5 @@
+use lib/nums{one, two}
+use lib/defs{sum}
+
+def main():
+  return sum(one, two)

tests/golden_tests/import_system/imports_alias.bend

@@ -0,0 +1,5 @@
+use lib/nums{one as One, two as Two}
+use lib/defs{sum as summation}
+
+def main():
+  return summation(One, Two)

tests/golden_tests/import_system/imports_alias_shadow.bend

@@ -0,0 +1,4 @@
+use lib/nums{one as A, two as A}
+
+def main():
+  return A + A

tests/golden_tests/import_system/imports_conflict.bend

@@ -0,0 +1,7 @@
+use lib/a/b{C}
+use lib/a{b/C}
+
+lib/a/b/C = *
+
+def main():
+  return *

tests/golden_tests/import_system/imports_shadow.bend

@@ -0,0 +1,5 @@
+use lib/folder/myFun
+use lib/myFun
+
+def main():
+  return myFun

tests/golden_tests/import_system/imports_shadow2.bend

@@ -0,0 +1,5 @@
+use lib/myFun
+use lib/folder/myFun
+
+def main():
+  return myFun(lib/myFun/myFun) # use the full name to call a shadowed imported def

tests/golden_tests/import_system/lib/a.bend

@@ -0,0 +1 @@
+type b = C

tests/golden_tests/import_system/lib/a/b.bend

@@ -0,0 +1 @@
+C = *

tests/golden_tests/import_system/lib/bool_xor.bend

@@ -0,0 +1,5 @@
+use types{Bool}
+
+(bool_xor Bool/True Bool/False) = Bool/True
+(bool_xor Bool/False Bool/True) = Bool/True
+(bool_xor * *) = Bool/False

tests/golden_tests/import_system/lib/defs.bend

@@ -0,0 +1,5 @@
+def sum(a, b):
+  return a + b
+
+def minus(a, b):
+  return a - b

tests/golden_tests/import_system/lib/folder/myFun.bend

@@ -0,0 +1,2 @@
+def myFun(a):
+  return a

tests/golden_tests/import_system/lib/myFun.bend

@@ -0,0 +1,8 @@
+type Type = (A) | (B)
+
+def myFun(a):
+  match a:
+    case Type/A:
+      return 1
+    case Type/B:
+      return 2

tests/golden_tests/import_system/lib/nums.bend

@@ -0,0 +1,7 @@
+def one():
+  return 1
+
+two = 2
+
+def three():
+  return 3

tests/golden_tests/import_system/lib/types.bend

@@ -0,0 +1,5 @@
+type Bool:
+  True
+  False
+
+type MyTree = (node ~lft ~rgt) | (leaf val)

tests/snapshots/import_system__import_types.bend.snap

@@ -0,0 +1,5 @@
+---
+source: tests/golden_tests.rs
+input_file: tests/golden_tests/import_system/import_types.bend
+---
+lib/types/Bool/False

tests/snapshots/import_system__imports.bend.snap

@@ -0,0 +1,5 @@
+---
+source: tests/golden_tests.rs
+input_file: tests/golden_tests/import_system/imports.bend
+---
+3

tests/snapshots/import_system__imports_alias.bend.snap

@@ -0,0 +1,5 @@
+---
+source: tests/golden_tests.rs
+input_file: tests/golden_tests/import_system/imports_alias.bend
+---
+3

tests/snapshots/import_system__imports_alias_shadow.bend.snap

@@ -0,0 +1,6 @@
+---
+source: tests/golden_tests.rs
+input_file: tests/golden_tests/import_system/imports_alias_shadow.bend
+---
+Errors:
+The import 'lib/nums/two' shadows the imported name 'lib/nums/one'

tests/snapshots/import_system__imports_conflict.bend.snap

@@ -0,0 +1,7 @@
+---
+source: tests/golden_tests.rs
+input_file: tests/golden_tests/import_system/imports_conflict.bend
+---
+Errors:
+The imported definition 'lib/a/b/C' conflicts with the definition 'lib/a/b/C'.
+The imported constructor 'lib/a/b/C' conflicts with the definition 'lib/a/b/C'.

tests/snapshots/import_system__imports_shadow.bend.snap

@@ -0,0 +1,6 @@
+---
+source: tests/golden_tests.rs
+input_file: tests/golden_tests/import_system/imports_shadow.bend
+---
+Errors:
+The import 'lib/myFun/myFun' shadows the imported name 'lib/folder/myFun/myFun'

tests/snapshots/import_system__imports_shadow2.bend.snap

@@ -0,0 +1,6 @@
+---
+source: tests/golden_tests.rs
+input_file: tests/golden_tests/import_system/imports_shadow2.bend
+---
+Errors:
+The import 'lib/folder/myFun/myFun' shadows the imported name 'lib/myFun/myFun'