Step 92: LSP auto-completion

editor/tests/step92_test.cpp

@@ -0,0 +1,39 @@
+// Step 92 TDD Test: LSP auto-completion
+//
+// Tests:
+// 1. completion response parsed into items
+
+#include <cassert>
+#include <iostream>
+#include "LSPClient.h"
+
+struct MockTransport : public LSPTransport {
+    std::vector<std::string> sent;
+    void send(const std::string& msg) override { sent.push_back(msg); }
+    bool receive(std::string& out) override { (void)out; return false; }
+    bool isOpen() const override { return true; }
+    void close() override {}
+};
+
+int main() {
+    int passed = 0;
+    int failed = 0;
+
+    auto transport = std::make_shared<MockTransport>();
+    LSPClient client(transport);
+
+    int reqId = client.requestCompletion("file:///tmp/a.py", 2, 5);
+    assert(reqId == 1);
+    std::string resp = R"({"jsonrpc":"2.0","id":1,"result":{"isIncomplete":false,"items":[{"label":"printf","kind":3,"detail":"fn","insertText":"printf"}]}})";
+    client.handleMessage(resp);
+
+    auto items = client.getCompletionItems();
+    assert(items.size() == 1);
+    assert(items[0].label == "printf");
+    assert(items[0].kind == 3);
+    std::cout << "Test 1 PASS: completion response parsed" << std::endl;
+    ++passed;
+
+    std::cout << "\n=== Step 92 Results: " << passed << " passed, " << failed << " failed ===" << std::endl;
+    return failed > 0 ? 1 : 0;
+}