diff --git a/crates/json-pawarser/src/grammar/object.rs b/crates/json-pawarser/src/grammar/object.rs
index d72dcdc..f021306 100644
--- a/crates/json-pawarser/src/grammar/object.rs
+++ b/crates/json-pawarser/src/grammar/object.rs
@@ -61,3 +61,32 @@ fn member(p: &mut Parser) -> Option<CompletedMarker> {
         )
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use crate::grammar::{
+        object::{member, object},
+        test_utils::gen_checks,
+    };
+
+    #[test]
+    fn object_basic() {
+        gen_checks! {object;
+            r#"{"a": "b"}"# => r#"ROOT { OBJECT { BRACE_OPEN "{"; MEMBER { MEMBER_NAME { STRING "\"a\""; } COLON ":"; WHITESPACE " "; MEMBER_VALUE { STRING "\"b\""; } } BRACE_CLOSE "}"; } }"#,
+            r#"{"a": 42}"# => r#"ROOT { OBJECT { BRACE_OPEN "{"; MEMBER { MEMBER_NAME { STRING "\"a\""; } COLON ":"; WHITESPACE " "; MEMBER_VALUE { NUMBER "42"; } } BRACE_CLOSE "}"; } }"#,
+            r#"{"a": "b""# => r#"ROOT { PARSE_ERR: UnclosedObject { BRACE_OPEN "{"; MEMBER { MEMBER_NAME { STRING "\"a\""; } COLON ":"; WHITESPACE " "; MEMBER_VALUE { STRING "\"b\""; } } } }"#,
+            r#"{"a": }"# => r#"ROOT { OBJECT { BRACE_OPEN "{"; MEMBER { PARSE_ERR: MemberMissingValue { MEMBER_NAME { STRING "\"a\""; } COLON ":"; } } WHITESPACE " "; BRACE_CLOSE "}"; } }"#,
+            r#"{"a":"# => r#"ROOT { PARSE_ERR: UnclosedObject { BRACE_OPEN "{"; MEMBER { PARSE_ERR: MemberMissingValue { MEMBER_NAME { STRING "\"a\""; } COLON ":"; } } } }"#,
+            r#"{"a":true,}"# => r#"ROOT { OBJECT { BRACE_OPEN "{"; MEMBER { MEMBER_NAME { STRING "\"a\""; } COLON ":"; MEMBER_VALUE { BOOL "true"; } } TRAILING_COMMA { COMMA ","; } BRACE_CLOSE "}"; } }"#
+        }
+    }
+
+    #[test]
+    fn member_basic() {
+        gen_checks! {member;
+            r#""a": "b""# => r#"ROOT { MEMBER { MEMBER_NAME { STRING "\"a\""; } COLON ":"; WHITESPACE " "; MEMBER_VALUE { STRING "\"b\""; } } }"#,
+            r#""a": 42"# => r#"ROOT { MEMBER { MEMBER_NAME { STRING "\"a\""; } COLON ":"; WHITESPACE " "; MEMBER_VALUE { NUMBER "42"; } } }"#,
+            r#""a":"# => r#"ROOT { MEMBER { PARSE_ERR: MemberMissingValue { MEMBER_NAME { STRING "\"a\""; } COLON ":"; } } }"#
+        }
+    }
+}