1 files changed, 34 insertions, 0 deletions
diff --git a/src/tools/cargo/crates/mdman/tests/invalid.rs b/src/tools/cargo/crates/mdman/tests/invalid.rs
new file mode 100644
index 000000000..cc81d06c4
--- /dev/null
+++ b/src/tools/cargo/crates/mdman/tests/invalid.rs
@@ -0,0 +1,34 @@
+//! Tests for errors and invalid input.
+
+use mdman::{Format, ManMap};
+use pretty_assertions::assert_eq;
+use std::path::PathBuf;
+
+fn run(name: &str, expected_error: &str) {
+    let input = PathBuf::from(format!("tests/invalid/{}", name));
+    match mdman::convert(&input, Format::Man, None, ManMap::new()) {
+        Ok(_) => {
+            panic!("expected {} to fail", name);
+        }
+        Err(e) => {
+            assert_eq!(expected_error, e.to_string());
+        }
+    }
+}
+
+macro_rules! test( ($name:ident, $file_name:expr, $error:expr) => (
+    #[test]
+    fn $name() { run($file_name, $error); }
+) );
+
+test!(
+    nested,
+    "nested.md",
+    "Error rendering \"template\" line 4, col 1: options blocks cannot be nested"
+);
+
+test!(
+    not_inside_options,
+    "not-inside-options.md",
+    "Error rendering \"template\" line 3, col 1: option must be in options block"
+);