_utils: don't crash trying to flatten() strings.

Fixes #614.
2021-12-11 07:39:35 +00:00 · 2021-12-11 07:39:35 +00:00 · de7c9acb19
commit de7c9acb19
parent 0fb2b4cd39
2 changed files with 8 additions and 3 deletions
--- a/tests/test_hdl_ast.py
+++ b/tests/test_hdl_ast.py
@ -740,6 +740,11 @@ class CatTestCase(FHDLTestCase):
    def test_cast(self):
        c = Cat(1, 0)
        self.assertEqual(repr(c), "(cat (const 1'd1) (const 1'd0))")
+    
+    def test_str_wrong(self):
+        with self.assertRaisesRegex(TypeError,
+                r"^Object 'foo' cannot be converted to an Amaranth value$"):
+            Cat("foo")


 class ReplTestCase(FHDLTestCase):