chore: checkpoint before Python removal

vendor/wit-component/tests/wit.rs

@@ -0,0 +1,49 @@
+#![cfg(feature = "wat")]
+
+use anyhow::Result;
+use wit_parser::Resolve;
+
+/// Ensure that parse_wit_from_path works with directories
+#[test]
+fn parse_wit_dir() -> Result<()> {
+    drop(env_logger::try_init());
+
+    let mut resolver = Resolve::default();
+    let (package_id, _) = resolver.push_path("tests/wit/parse-dir/wit")?;
+    assert!(
+        resolver
+            .select_world(&[package_id], "foo-world".into())
+            .is_ok()
+    );
+
+    Ok(())
+}
+
+/// Ensure that parse_wit_from_path works for a single file
+#[test]
+fn parse_wit_file() -> Result<()> {
+    drop(env_logger::try_init());
+
+    let mut resolver = Resolve::default();
+    let (package_id, _) = resolver.push_path("tests/wit/parse-dir/wit/deps/bar/bar.wit")?;
+    resolver.select_world(&[package_id], "bar-world".into())?;
+    assert!(
+        resolver
+            .interfaces
+            .iter()
+            .any(|(_, iface)| iface.name == Some("bar".into()))
+    );
+
+    Ok(())
+}
+
+/// Ensure that parse_with_from_path fails for missing paths
+#[test]
+fn parse_wit_missing_path() -> Result<()> {
+    drop(env_logger::try_init());
+
+    let mut resolver = Resolve::default();
+    assert!(resolver.push_path("tests/nonexistent/path").is_err());
+
+    Ok(())
+}