1 files changed, 25 insertions, 0 deletions
diff --git a/tests/implicit.rs b/tests/implicit.rs
new file mode 100644
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+++ b/tests/implicit.rs
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+// Licensed under the Apache License, Version 2.0
+// <LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0> or the MIT
+// license <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. All files in the project carrying such notice may not be copied,
+// modified, or distributed except according to those terms.
+
+#![cfg_attr(not(feature = "std"), no_std)]
+extern crate alloc;
+extern crate pest;
+extern crate pest_derive;
+
+use pest::Parser;
+use pest_derive::Parser;
+
+#[derive(Parser)]
+#[grammar = "../tests/implicit.pest"]
+struct TestImplicitParser;
+
+#[test]
+fn test_implicit_whitespace() {
+    // this failed to parse due to a bug in the optimizer
+    // see: https://github.com/pest-parser/pest/issues/762#issuecomment-1375374868
+    let successful_parse = TestImplicitParser::parse(Rule::program, "a a");
+    assert!(successful_parse.is_ok());
+}