chore: import upstream snapshot with attribution

tests/core/treeSitter/parseFile.rust.test.ts

@@ -0,0 +1,66 @@
+import { describe, expect, test } from 'vitest';
+import { parseFile } from '../../../src/core/treeSitter/parseFile.js';
+import { createMockConfig } from '../../../tests/testing/testUtils.js';
+
+describe('parseFile for Rust', () => {
+  test('should parse Rust correctly', async () => {
+    const fileContent = `
+      // Module declaration
+      mod greetings {
+          // Trait definition
+          pub trait Greeter {
+              /// Says hello to someone
+              fn greet(&self, name: &str) -> String;
+          }
+
+          // Struct definition
+          #[derive(Debug)]
+          pub struct SimpleGreeter {
+              prefix: String
+          }
+
+          // Implementation block
+          impl Greeter for SimpleGreeter {
+              fn greet(&self, name: &str) -> String {
+                  format!("{}, {}!", self.prefix, name)
+              }
+          }
+
+          // Enum definition
+          #[derive(Debug)]
+          pub enum Language {
+              English,
+              Japanese,
+              Spanish
+          }
+
+          // Main function
+          fn main() {
+              let greeter = SimpleGreeter {
+                  prefix: String::from("Hello")
+              };
+              println!("{}", greeter.greet("World"));
+          }
+      }
+    `;
+    const filePath = 'dummy.rs';
+    const config = {};
+    const result = await parseFile(fileContent, filePath, createMockConfig(config));
+    expect(typeof result).toBe('string');
+
+    const expectContents = [
+      'mod greetings {',
+      'pub trait Greeter {',
+      '// Says hello to someone',
+      'fn greet(&self, name: &str) -> String {',
+      'pub struct SimpleGreeter {',
+      'impl Greeter for SimpleGreeter {',
+      'pub enum Language {',
+      'fn main() {',
+    ];
+
+    for (const expectContent of expectContents) {
+      expect(result).toContain(expectContent);
+    }
+  });
+});