Step 135: library-aware completion

editor/tests/step135_test.cpp

@@ -0,0 +1,44 @@
+// Step 135 TDD Test: Library-aware completion ranking
+#include "CompletionUtils.h"
+#include <iostream>
+
+static void expect(bool cond, const std::string& name, int& passed, int& failed) {
+    if (cond) {
+        std::cout << "Test " << (passed + failed + 1) << " PASS: " << name << "\n";
+        ++passed;
+    } else {
+        std::cout << "Test " << (passed + failed + 1) << " FAIL: " << name << "\n";
+        ++failed;
+    }
+}
+
+int main() {
+    int passed = 0;
+    int failed = 0;
+
+    std::vector<LSPClient::CompletionItem> lsp = {
+        {"foo", 0, "", "foo", ""},
+        {"bar", 0, "", "bar", ""}
+    };
+    std::vector<PrimitiveSymbol> prims = {
+        {"bar", "function", "import", "lib"},
+        {"baz", "function", "import", "lib"}
+    };
+
+    auto built = buildLibraryAwareCompletions(lsp, prims, "");
+    expect(built.preferredNames.count("bar") == 1, "preferred contains bar", passed, failed);
+    expect(built.preferredNames.count("baz") == 1, "preferred contains baz", passed, failed);
+    expect(built.items.size() == 3, "completion list includes primitive", passed, failed);
+    expect(built.items[0].label == "bar" || built.items[0].label == "baz",
+           "preferred items sorted first", passed, failed);
+
+    auto builtPref = buildLibraryAwareCompletions(lsp, prims, "ba");
+    bool hasBaz = false;
+    for (const auto& item : builtPref.items) {
+        if (item.label == "baz") hasBaz = true;
+    }
+    expect(hasBaz, "prefix adds matching primitive", passed, failed);
+
+    std::cout << "\n=== Step 135 Results: " << passed << " passed, " << failed << " failed ===\n";
+    return failed == 0 ? 0 : 1;
+}