test: add curly bracket import test (#929)

ethers-solc/src/utils.rs

@@ -341,6 +341,7 @@ pub fn create_parent_dir_all(file: impl AsRef<Path>) -> Result<(), SolcError> {
 #[cfg(test)]
 mod tests {
     use super::*;
+    use solang_parser::pt::SourceUnitPart;
     use std::{
         collections::HashSet,
         fs::{create_dir_all, File},
@@ -383,6 +384,22 @@ mod tests {
         assert_eq!(files, expected);
     }
 
+    #[test]
+    fn can_parse_curly_bracket_imports() {
+        let s =
+            r#"import {ReentrancyGuard} from "@openzeppelin/contracts/utils/ReentrancyGuard.sol";"#;
+
+        let (unit, _) = solang_parser::parse(s, 0).unwrap();
+        assert_eq!(unit.0.len(), 1);
+        match unit.0[0] {
+            SourceUnitPart::ImportDirective(_, _) => {}
+            _ => unreachable!("failed to parse import"),
+        }
+        let imports: Vec<_> = find_import_paths(s).map(|m| m.as_str()).collect();
+
+        assert_eq!(imports, vec!["@openzeppelin/contracts/utils/ReentrancyGuard.sol"])
+    }
+
     #[test]
     fn can_find_single_quote_imports() {
         let content = r#"