Get arrays and mappings working

projects/lilith/test/python/conftest.py

@@ -22,6 +22,11 @@ def arguments_grammar():
     return parser_with_transformer(GRAMMAR, "arguments")
 
 
+@pytest.fixture
+def expr_grammar():
+    return parser_with_transformer(GRAMMAR, "expr")
+
+
 @pytest.fixture
 def header_grammar():
     return parser_with_transformer(GRAMMAR, "header")

projects/lilith/test/python/test_parser.py

@@ -60,6 +60,21 @@ def test_parse_arguments(arguments_grammar, example, expected):
     assert arguments_grammar.parse(example) == expected
 
 
+@pytest.mark.parametrize(
+    "example, expected",
+    [
+        ("1", 1),
+        ("[1, 2, 3]", [1, 2, 3]),
+        ('{"a": 1}', {"a": 1}),
+        ("true", True),
+        ("false", False),
+        ("nil", None),
+    ],
+)
+def test_parse_expr(expr_grammar, example, expected):
+    assert expr_grammar.parse(example) == expected
+
+
 @pytest.mark.parametrize(
     "example, expected",
     [