Write tests.

1 files changed, 14 insertions, 0 deletions

diff --git a/src/test/fixtures/error.rs b/src/test/fixtures/error.rs
new file mode 100644
index 0000000..559afee
--- /dev/null
+++ b/src/test/fixtures/error.rs
@@ -0,0 +1,14 @@
+macro_rules! expected {
+    ($expr:expr, $expect:pat $(,)?) => {
+        $crate::test::fixtures::error::expected!($expr, $expect, ())
+    };
+
+    ($expr:expr, $expect:pat, $body:expr $(,)?) => {
+        match $expr {
+            $expect => $body,
+            other => panic!("expected {}, found {other:#?}", stringify!($expect)),
+        }
+    };
+}
+
+pub(crate) use expected;