test_runner: add initial CLI runner

This commit introduces an initial version of a CLI-based
test runner.

PR-URL: https://github.com/nodejs/node/pull/42658
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>

3 files changed, 26 insertions, 0 deletions

diff --git a/src/node.cc b/src/node.cc
index 5ba03b75407..b43f915c5d5 100644
--- a/src/node.cc
+++ b/src/node.cc
@@ -517,6 +517,10 @@ MaybeLocal<Value> StartExecution(Environment* env, StartExecutionCallback cb) {
     return StartExecution(env, "internal/main/check_syntax");
   }
 
+  if (env->options()->test_runner) {
+    return StartExecution(env, "internal/main/test_runner");
+  }
+
   if (!first_argv.empty() && first_argv != "-") {
     return StartExecution(env, "internal/main/run_main_module");
   }
diff --git a/src/node_options.cc b/src/node_options.cc
index 313fb219294..b2b4c2c18c7 100644
--- a/src/node_options.cc
+++ b/src/node_options.cc
@@ -143,6 +143,24 @@ void EnvironmentOptions::CheckOptions(std::vector<std::string>* errors) {
     errors->push_back("--heap-snapshot-near-heap-limit must not be negative");
   }
 
+  if (test_runner) {
+    if (syntax_check_only) {
+      errors->push_back("either --test or --check can be used, not both");
+    }
+
+    if (has_eval_string) {
+      errors->push_back("either --test or --eval can be used, not both");
+    }
+
+    if (force_repl) {
+      errors->push_back("either --test or --interactive can be used, not both");
+    }
+
+    if (debug_options_.inspector_enabled) {
+      errors->push_back("the inspector cannot be used with --test");
+    }
+  }
+
 #if HAVE_INSPECTOR
   if (!cpu_prof) {
     if (!cpu_prof_name.empty()) {
@@ -498,6 +516,9 @@ EnvironmentOptionsParser::EnvironmentOptionsParser() {
             "write warnings to file instead of stderr",
             &EnvironmentOptions::redirect_warnings,
             kAllowedInEnvironment);
+  AddOption("--test",
+            "launch test runner on startup",
+            &EnvironmentOptions::test_runner);
   AddOption("--test-only",
             "run tests with 'only' option set",
             &EnvironmentOptions::test_only,
diff --git a/src/node_options.h b/src/node_options.h
index 97e01a9435b..0757a767a16 100644
--- a/src/node_options.h
+++ b/src/node_options.h
@@ -148,6 +148,7 @@ class EnvironmentOptions : public Options {
 #endif  // HAVE_INSPECTOR
   std::string redirect_warnings;
   std::string diagnostic_dir;
+  bool test_runner = false;
   bool test_only = false;
   bool test_udp_no_try_send = false;
   bool throw_deprecation = false;