bugfixing, debug. still broken, but better

version0/crdt/text_document.hpp

@@ -245,11 +245,11 @@ struct TextDocument {
 		//std::cout << "text between: " << getText() << "\n";
 
 		// 2. add range (add all text_start - text_end)
-		if (text_start < text_end) {
+		if (state.doc_size < text.size()) {
 			auto tmp_add_ops = addText(
 				list_start == 0 ? std::nullopt : std::make_optional(state.list[list_start-1].id),
 				list_start == state.list.size() ? std::nullopt :std::make_optional(state.list.at(list_start).id),
-				text.substr(text_start, text_end-text_start)
+				text.substr(text_start, text.size() - state.doc_size)
 			);
 			//std::cout << "added: " << tmp_add_ops.size() << "\n";
 			ops.insert(ops.end(), tmp_add_ops.begin(), tmp_add_ops.end());

version0/test2.cpp

@@ -398,8 +398,21 @@ void testChange1(size_t seed) {
 	assert(doc.getText() == otherdoc.getText());
 }
 
+void testBugSame(void) {
+	Doc doc;
+	doc.local_agent = 'A';
+
+	std::string_view new_text1{"a"};
+	doc.merge(new_text1);
+	assert(doc.getText() == new_text1);
+
+	std::string_view new_text2{"aa"};
+	doc.merge(new_text2);
+	assert(doc.getText() == new_text2);
+}
+
 int main(void) {
-	const size_t loops = 10'000;
+	const size_t loops = 1'000;
 	{
 		std::cout << "testEmptyDocAdds:\n";
 		for (size_t i = 0; i < loops; i++) {
@@ -453,6 +466,13 @@ int main(void) {
 		}
 	}
 
+	std::cout << std::string(40, '=') << "\n";
+
+	{
+		std::cout << "testBugNLNL:\n";
+		testBugSame();
+	}
+
 	return 0;
 }