1 files changed, 50 insertions, 0 deletions
diff --git a/modules/codec-json/tests/codec-json.cpp b/modules/codec-json/tests/codec-json.cpp
index ab33f5a..a87b237 100644
--- a/modules/codec-json/tests/codec-json.cpp
+++ b/modules/codec-json/tests/codec-json.cpp
@@ -323,6 +323,56 @@ SAW_TEST("Struct read and write"){
 	SAW_EXPECT(native.get<"bar">() == "baz", "Invalid value for bar");
 }
 
+SAW_TEST("Struct read with missing member"){
+	using namespace saw;
+	data<schema::TestStruct, encode::Native> native;
+	data<schema::TestStruct, encode::Json> json{"{\"bar\":\"baz\"}"};
+
+	codec<schema::TestStruct, encode::Json> json_codec;
+
+	error_or<void> eov = json_codec.decode(json, native);
+	SAW_EXPECT(eov.is_value(), "Decoding error");
+	SAW_EXPECT(native.get<"foo">().get() == 0, "Missing member foo should keep its default value");
+	SAW_EXPECT(native.get<"bar">() == "baz", "Invalid value for bar");
+}
+
+SAW_TEST("Struct read with missing member in strict mode"){
+	using namespace saw;
+	data<schema::TestStruct, encode::Native> native;
+	data<schema::TestStruct, encode::Json> json{"{\"bar\":\"baz\"}"};
+
+	codec_config<encode::Json> json_config;
+	json_config.strict = true;
+	codec<schema::TestStruct, encode::Json> json_codec{json_config};
+
+	error_or<void> eov = json_codec.decode(json, native);
+	SAW_EXPECT(eov.is_error(), "Strict decoding should reject incomplete structs");
+}
+
+SAW_TEST("Empty Struct read"){
+	using namespace saw;
+	data<schema::TestStruct, encode::Native> native;
+	data<schema::TestStruct, encode::Json> json{"{}"};
+
+	codec<schema::TestStruct, encode::Json> json_codec;
+
+	error_or<void> eov = json_codec.decode(json, native);
+	SAW_EXPECT(eov.is_value(), "Decoding error");
+	SAW_EXPECT(native.get<"foo">().get() == 0, "Missing member foo should keep its default value");
+	SAW_EXPECT(native.get<"bar">() == "", "Missing member bar should keep its default value");
+}
+
+SAW_TEST("Struct read with unknown member"){
+	using namespace saw;
+	data<schema::TestStruct, encode::Native> native;
+	data<schema::TestStruct, encode::Json> json{"{\"foo\":5,\"baz\":3,\"bar\":\"baz\"}"};
+
+	codec<schema::TestStruct, encode::Json> json_codec;
+
+	error_or<void> eov = json_codec.decode(json, native);
+	SAW_EXPECT(eov.is_error(), "Unknown members are not supported");
+}
+
 SAW_TEST("Array Struct Empty read and write"){
 	using namespace saw;
 	data<schema::TestArrayStruct, encode::Native> native{0u};