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whetstone_DSL/editor/tests/step251_test.cpp

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// Step 251 TDD Test: Quick-Fix Actions as RPC Mutations
//
// Tests getQuickFixes and applyQuickFix RPC methods: fix discovery,
// mutation application, diagnostic clearing, and MCP tool registration.
#include "HeadlessEditorState.h"
#include "MCPBridge.h"
#include <iostream>
#include <string>
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;
}
}
// Helper: set up state with a function that has a bad annotation
static void setupAnnotatedState(HeadlessEditorState& state,
const std::string& bufName) {
state.defaultLanguage = "python";
state.openBuffer(bufName,
"def cleanup(ptr):\n x = ptr\n", "python");
state.setAgentRole("s1", AgentRole::Refactor);
Module* ast = state.activeAST();
for (auto* c : ast->allChildren()) {
if (c->conceptType == "Function") {
auto* anno = new DeallocateAnnotation();
c->addChild("annotations", anno);
break;
}
}
}
int main() {
int passed = 0;
int failed = 0;
// ---------------------------------------------------------------
// Test 1: getQuickFixes returns fixes for annotation diagnostic
// ---------------------------------------------------------------
{
HeadlessEditorState state;
setupAnnotatedState(state, "t1.py");
json request = {{"jsonrpc", "2.0"}, {"id", 1},
{"method", "getQuickFixes"},
{"params", json::object()}};
json resp = state.processAgentRequest(request, "s1");
bool hasFixes = resp.contains("result") &&
resp["result"].contains("fixes") &&
resp["result"]["fixes"].is_array();
int count = 0;
if (resp.contains("result"))
count = resp["result"].value("count", 0);
expect(hasFixes && count > 0,
"getQuickFixes returns fixes (count=" +
std::to_string(count) + ")",
passed, failed);
}
// ---------------------------------------------------------------
// Test 2: QuickFix has required fields
// ---------------------------------------------------------------
{
HeadlessEditorState state;
setupAnnotatedState(state, "t2.py");
json request = {{"jsonrpc", "2.0"}, {"id", 1},
{"method", "getQuickFixes"},
{"params", json::object()}};
json resp = state.processAgentRequest(request, "s1");
bool valid = false;
if (resp.contains("result") &&
!resp["result"]["fixes"].empty()) {
const auto& f = resp["result"]["fixes"][0];
valid = f.contains("id") && f.contains("diagCode") &&
f.contains("nodeId") && f.contains("description") &&
f.contains("category") && f.contains("mutation");
}
expect(valid,
"QuickFix has id, diagCode, nodeId, description, category, mutation",
passed, failed);
}
// ---------------------------------------------------------------
// Test 3: QuickFix mutation is a concrete mutation object
// ---------------------------------------------------------------
{
HeadlessEditorState state;
setupAnnotatedState(state, "t3.py");
json request = {{"jsonrpc", "2.0"}, {"id", 1},
{"method", "getQuickFixes"},
{"params", json::object()}};
json resp = state.processAgentRequest(request, "s1");
bool hasMutType = false;
if (resp.contains("result") &&
!resp["result"]["fixes"].empty()) {
const auto& mut = resp["result"]["fixes"][0]["mutation"];
hasMutType = mut.contains("type");
}
expect(hasMutType,
"QuickFix mutation contains 'type' field",
passed, failed);
}
// ---------------------------------------------------------------
// Test 4: getQuickFixes with nodeId filter
// ---------------------------------------------------------------
{
HeadlessEditorState state;
setupAnnotatedState(state, "t4.py");
// Find the function nodeId
std::string funcId;
for (auto* c : state.activeAST()->allChildren()) {
if (c->conceptType == "Function") { funcId = c->id; break; }
}
json request = {{"jsonrpc", "2.0"}, {"id", 1},
{"method", "getQuickFixes"},
{"params", {{"nodeId", funcId}}}};
json resp = state.processAgentRequest(request, "s1");
bool allMatch = true;
int count = 0;
if (resp.contains("result")) {
count = resp["result"].value("count", 0);
for (const auto& f : resp["result"]["fixes"]) {
if (f.value("nodeId", "") != funcId)
allMatch = false;
}
}
expect(count > 0 && allMatch,
"getQuickFixes with nodeId returns fixes for that node only",
passed, failed);
}
// ---------------------------------------------------------------
// Test 5: applyQuickFix applies the mutation
// ---------------------------------------------------------------
{
HeadlessEditorState state;
setupAnnotatedState(state, "t5.py");
// Find the function nodeId and its annotation
std::string funcId;
std::string annoId;
for (auto* c : state.activeAST()->allChildren()) {
if (c->conceptType == "Function") {
funcId = c->id;
for (auto* a : c->getChildren("annotations")) {
if (a->conceptType == "DeallocateAnnotation") {
annoId = a->id;
break;
}
}
break;
}
}
// The fix for E0200 is deleteNode on the function node
// (where the annotation is attached)
json request = {{"jsonrpc", "2.0"}, {"id", 1},
{"method", "applyQuickFix"},
{"params", {{"diagCode", "E0200"},
{"nodeId", funcId}}}};
json resp = state.processAgentRequest(request, "s1");
bool hasResult = resp.contains("result");
bool hasFixId = hasResult &&
resp["result"].contains("fixApplied");
expect(hasResult && hasFixId,
"applyQuickFix returns result with fixApplied",
passed, failed);
}
// ---------------------------------------------------------------
// Test 6: applyQuickFix reports diagnostic status
// ---------------------------------------------------------------
{
HeadlessEditorState state;
setupAnnotatedState(state, "t6.py");
std::string funcId;
for (auto* c : state.activeAST()->allChildren()) {
if (c->conceptType == "Function") { funcId = c->id; break; }
}
json request = {{"jsonrpc", "2.0"}, {"id", 1},
{"method", "applyQuickFix"},
{"params", {{"diagCode", "E0200"},
{"nodeId", funcId}}}};
json resp = state.processAgentRequest(request, "s1");
bool hasCleared = resp.contains("result") &&
resp["result"].contains("diagnosticCleared");
bool hasRemaining = resp.contains("result") &&
resp["result"].contains("remainingDiagnostics");
expect(hasCleared && hasRemaining,
"applyQuickFix reports diagnosticCleared and remainingDiagnostics",
passed, failed);
}
// ---------------------------------------------------------------
// Test 7: applyQuickFix with invalid diagCode returns error
// ---------------------------------------------------------------
{
HeadlessEditorState state;
setupAnnotatedState(state, "t7.py");
json request = {{"jsonrpc", "2.0"}, {"id", 1},
{"method", "applyQuickFix"},
{"params", {{"diagCode", "E9999"},
{"nodeId", "nonexistent"}}}};
json resp = state.processAgentRequest(request, "s1");
bool isErr = resp.contains("error");
expect(isErr,
"applyQuickFix with invalid diagCode returns error",
passed, failed);
}
// ---------------------------------------------------------------
// Test 8: applyQuickFix requires both diagCode and nodeId
// ---------------------------------------------------------------
{
HeadlessEditorState state;
setupAnnotatedState(state, "t8.py");
json request = {{"jsonrpc", "2.0"}, {"id", 1},
{"method", "applyQuickFix"},
{"params", {{"diagCode", "E0200"}}}};
json resp = state.processAgentRequest(request, "s1");
bool isErr = resp.contains("error") &&
resp["error"].value("code", 0) == -32602;
expect(isErr,
"applyQuickFix without nodeId returns -32602 error",
passed, failed);
}
// ---------------------------------------------------------------
// Test 9: Linter role can getQuickFixes but not applyQuickFix
// ---------------------------------------------------------------
{
HeadlessEditorState state;
setupAnnotatedState(state, "t9.py");
state.setAgentRole("linter", AgentRole::Linter);
// getQuickFixes should work for Linter
json getReq = {{"jsonrpc", "2.0"}, {"id", 1},
{"method", "getQuickFixes"},
{"params", json::object()}};
json getResp = state.processAgentRequest(getReq, "linter");
bool canGet = getResp.contains("result");
// applyQuickFix should be denied for Linter
std::string funcId;
for (auto* c : state.activeAST()->allChildren()) {
if (c->conceptType == "Function") { funcId = c->id; break; }
}
json applyReq = {{"jsonrpc", "2.0"}, {"id", 2},
{"method", "applyQuickFix"},
{"params", {{"diagCode", "E0200"},
{"nodeId", funcId}}}};
json applyResp = state.processAgentRequest(applyReq, "linter");
bool denied = applyResp.contains("error") &&
applyResp["error"].value("code", 0) == -32031;
expect(canGet && denied,
"Linter can getQuickFixes but not applyQuickFix",
passed, failed);
}
// ---------------------------------------------------------------
// Test 10: MCP tools/list includes quick fix tools (20 total)
// ---------------------------------------------------------------
{
HeadlessEditorState state;
state.defaultLanguage = "python";
state.openBuffer("mcp.py", "x = 1\n", "python");
state.setAgentRole("mcp-session", AgentRole::Refactor);
MCPBridge bridge;
bridge.setRequestHandler([&state](const json& req) -> json {
return state.processAgentRequest(req, "mcp-session");
});
json req = {{"jsonrpc", "2.0"}, {"id", 1},
{"method", "tools/list"}};
std::string resp = bridge.processMessage(req.dump());
json r = json::parse(resp);
bool hasGetFixes = false, hasApplyFix = false;
int toolCount = 0;
if (r.contains("result") && r["result"].contains("tools")) {
toolCount = (int)r["result"]["tools"].size();
for (const auto& t : r["result"]["tools"]) {
std::string name = t.value("name", "");
if (name == "whetstone_get_quick_fixes") hasGetFixes = true;
if (name == "whetstone_apply_quick_fix") hasApplyFix = true;
}
}
expect(hasGetFixes && hasApplyFix && toolCount >= 20,
"MCP tools/list includes quick fix tools (total " +
std::to_string(toolCount) + ")",
passed, failed);
}
// ---------------------------------------------------------------
// Test 11: Function without return gets missing-return fix
// ---------------------------------------------------------------
{
HeadlessEditorState state;
state.defaultLanguage = "python";
state.openBuffer("noret.py",
"def compute(x):\n y = x * 2\n", "python");
state.setAgentRole("s1", AgentRole::Refactor);
// Find the function nodeId
std::string funcId;
for (auto* c : state.activeAST()->allChildren()) {
if (c->conceptType == "Function") { funcId = c->id; break; }
}
json request = {{"jsonrpc", "2.0"}, {"id", 1},
{"method", "getQuickFixes"},
{"params", {{"nodeId", funcId}}}};
json resp = state.processAgentRequest(request, "s1");
bool hasMissingReturn = false;
if (resp.contains("result")) {
for (const auto& f : resp["result"]["fixes"]) {
if (f.value("category", "") == "missing-return")
hasMissingReturn = true;
}
}
expect(hasMissingReturn,
"Function without return gets missing-return fix suggestion",
passed, failed);
}
// ---------------------------------------------------------------
// Test 12: QuickFix category matches diagnostic type
// ---------------------------------------------------------------
{
HeadlessEditorState state;
setupAnnotatedState(state, "t12.py");
json request = {{"jsonrpc", "2.0"}, {"id", 1},
{"method", "getQuickFixes"},
{"params", json::object()}};
json resp = state.processAgentRequest(request, "s1");
bool hasCategory = false;
if (resp.contains("result") &&
!resp["result"]["fixes"].empty()) {
for (const auto& f : resp["result"]["fixes"]) {
std::string cat = f.value("category", "");
if (cat == "remove-annotation" ||
cat == "change-strategy" ||
cat == "resolve-conflict" ||
cat == "remove-use-after-free" ||
cat == "add-deallocation" ||
cat == "remove-unused" ||
cat == "missing-return" ||
cat == "general") {
hasCategory = true;
}
}
}
expect(hasCategory,
"QuickFix has recognized category",
passed, failed);
}
std::cout << "\n=== Step 251 Results: " << passed << " passed, "
<< failed << " failed ===\n";
return failed == 0 ? 0 : 1;
}