added test case unit-struct.rs

3 files changed, 19 insertions, 0 deletions

diff --git a/tests/get.rs b/tests/get.rs
index 4019cd5..8a61a69 100644
--- a/tests/get.rs
+++ b/tests/get.rs
@@ -39,3 +39,9 @@ fn cat_tuple_struct() {
     assert_eq!(*cat.age(), 1);
     assert!(matches!(cat.owner(), ()));
 }
+
+#[test]
+fn trybuild() {
+    let tests = trybuild::TestCases::new();
+    tests.compile_fail(testcase!("unit-struct.rs"));
+}
diff --git a/tests/trybuild/unit-struct.rs b/tests/trybuild/unit-struct.rs
new file mode 100644
index 0000000..5a3ed0c
--- /dev/null
+++ b/tests/trybuild/unit-struct.rs
@@ -0,0 +1,6 @@
+use get::Get;
+
+#[derive(Get)]
+struct Cat;
+
+pub fn main() {}
diff --git a/tests/trybuild/unit-struct.stderr b/tests/trybuild/unit-struct.stderr
new file mode 100644
index 0000000..41da09f
--- /dev/null
+++ b/tests/trybuild/unit-struct.stderr
@@ -0,0 +1,7 @@
+error: proc-macro derive panicked
+ --> tests/trybuild/unit-struct.rs:3:10
+  |
+3 | #[derive(Get)]
+  |          ^^^
+  |
+  = help: message: called `Result::unwrap()` on an `Err` value: "can not generate getters on a unit struct"