[wasm] Add inspector test for stack traces

test/inspector/inspector-test.cc

Index: test/inspector/inspector-test.cc
diff --git a/test/inspector/inspector-test.cc b/test/inspector/inspector-test.cc
index 7fe6b8046862073f717e227fea94278cc86b2ff9..77310157a65298716de691212eeb51b64a25b942 100644
--- a/test/inspector/inspector-test.cc
+++ b/test/inspector/inspector-test.cc
@@ -33,7 +33,8 @@ class UtilsExtension : public v8::Extension {
       : v8::Extension("v8_inspector/utils",
                       "native function print();"
                       "native function quit();"
-                      "native function setlocale();") {}
+                      "native function setlocale();"
+                      "native function load();") {}
   virtual v8::Local<v8::FunctionTemplate> GetNativeFunctionTemplate(
       v8::Isolate* isolate, v8::Local<v8::String> name) {
     v8::Local<v8::Context> context = isolate->GetCurrentContext();
@@ -54,6 +55,12 @@ class UtilsExtension : public v8::Extension {
                                 .ToLocalChecked())
                    .FromJust()) {
       return v8::FunctionTemplate::New(isolate, UtilsExtension::SetLocale);
+    } else if (name->Equals(context,
+                            v8::String::NewFromUtf8(isolate, "load",
+                                                    v8::NewStringType::kNormal)
+                                .ToLocalChecked())
+                   .FromJust()) {
+      return v8::FunctionTemplate::New(isolate, UtilsExtension::Load);
     }
     return v8::Local<v8::FunctionTemplate>();
   }
@@ -102,6 +109,29 @@ class UtilsExtension : public v8::Extension {
     v8::String::Utf8Value str(args[0]);
     setlocale(LC_NUMERIC, *str);
   }
+
+  static void Load(const v8::FunctionCallbackInfo<v8::Value>& args) {
+    if (args.Length() != 1 || !args[0]->IsString()) {
+      fprintf(stderr, "Internal error: load gets one string argument.");
+      Exit();
+    }
+    v8::String::Utf8Value str(args[0]);
+    v8::Isolate* isolate = args.GetIsolate();
+    bool exists = false;
+    std::string filename(*str, str.length());
+    v8::internal::Vector<const char> chars =
+        v8::internal::ReadFile(filename.c_str(), &exists);
+    if (!exists) {
+      isolate->ThrowException(
+          v8::String::NewFromUtf8(isolate, "Error loading file",
+                                  v8::NewStringType::kNormal)
+              .ToLocalChecked());
+      return;
+    }
+    ExecuteStringTask task(chars);
+    v8::Global<v8::Context> context(isolate, isolate->GetCurrentContext());
+    task.Run(isolate, context);
+  }
 };
 
 class SetTimeoutTask : public TaskRunner::Task {