Vendor things

third-party/vendor/swc_ecma_loader/tests/node_resolver.rs

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+#![deny(warnings)]
+#![cfg(feature = "node")]
+
+use std::{
+    env::{current_dir, set_current_dir},
+    path::PathBuf,
+    sync::{Arc, Mutex},
+};
+
+use lazy_static::lazy_static;
+use swc_common::FileName;
+extern crate swc_ecma_loader;
+use swc_ecma_loader::{resolve::Resolve, resolvers::node::NodeModulesResolver, TargetEnv};
+
+lazy_static! {
+    static ref UPDATE_DIR_MUTEX: Arc<Mutex<()>> = Arc::new(Mutex::new(()));
+}
+
+fn inside_directory(dir: &str, callback: fn()) {
+    let arc = Arc::clone(&UPDATE_DIR_MUTEX);
+    let _lock = arc.lock().expect("could not lock");
+
+    let initial_current_dir = current_dir().unwrap();
+    let new_current_dir = format!("{}{}", initial_current_dir.display(), dir);
+
+    set_current_dir(new_current_dir).unwrap();
+    callback();
+    set_current_dir(initial_current_dir).unwrap();
+}
+
+#[test]
+fn basic_import() {
+    inside_directory("/tests/basic_import", || {
+        // Given
+        let node_resolver = NodeModulesResolver::new(TargetEnv::Node, Default::default(), true);
+
+        // When
+        let resolved = node_resolver
+            .resolve(&FileName::Real(PathBuf::from("jquery")), "jquery")
+            .expect("should resolve");
+
+        // Expect
+        assert_eq!(
+            resolved,
+            FileName::Real(PathBuf::from("node_modules/jquery/index.js"))
+        );
+    });
+}
+
+#[test]
+fn hoisting() {
+    inside_directory("/tests/hoisting/packages/app", || {
+        // Given
+        let node_resolver = NodeModulesResolver::new(TargetEnv::Node, Default::default(), true);
+
+        // When
+        let resolved = node_resolver
+            .resolve(&FileName::Real(PathBuf::from("jquery")), "jquery")
+            .expect("should resolve");
+
+        // Expect
+        assert_eq!(
+            resolved,
+            FileName::Real(PathBuf::from("../../node_modules/jquery/index.js"))
+        );
+    });
+}
+
+#[test]
+fn builtin_modules() {
+    let node_resolver = NodeModulesResolver::new(TargetEnv::Node, Default::default(), true);
+
+    // When
+    let resolved = node_resolver
+        .resolve(&FileName::Real(PathBuf::from("index.js")), "path")
+        .expect("should resolve");
+
+    // Expect
+    assert_eq!(resolved, FileName::Custom("node:path".to_string()));
+
+    // When
+    let resolved = node_resolver
+        .resolve(&FileName::Real(PathBuf::from("index.js")), "node:path")
+        .expect("should resolve");
+
+    // Expect
+    assert_eq!(resolved, FileName::Custom("node:path".to_string()));
+}
+
+#[test]
+fn browser_overwrite() {
+    inside_directory("/tests/browser_overwrite", || {
+        // Given
+        let node_resolver = NodeModulesResolver::new(TargetEnv::Browser, Default::default(), true);
+
+        // When
+        let resolved = node_resolver
+            .resolve(&FileName::Real(PathBuf::from("jquery")), "jquery")
+            .expect("should resolve");
+
+        // Expect
+        assert_eq!(
+            resolved,
+            FileName::Real(PathBuf::from("node_modules/jquery/browser.js"))
+        );
+    });
+}