n-api,test: add int64 test and fix JSRT

Fixed a couple build warnings as well.

PR-URL: #496
Reviewed-By: Taylor Woll <tawoll@ntdev.microsoft.com>
Reviewed-By: Jimmy Thomson <jithomso@microsoft.com>

src/node_api_jsrt.cc

@@ -109,10 +109,6 @@ namespace v8impl {
 
 //=== Conversion between V8 Isolate and napi_env ==========================
 
-napi_env JsEnvFromV8Isolate(v8::Isolate* isolate) {
-  return reinterpret_cast<napi_env>(isolate);
-}
-
 v8::Isolate* V8IsolateFromJsEnv(napi_env e) {
   return reinterpret_cast<v8::Isolate*>(e);
 }
@@ -137,26 +133,6 @@ class EscapableHandleScopeWrapper {
   v8::EscapableHandleScope scope;
 };
 
-napi_handle_scope JsHandleScopeFromV8HandleScope(HandleScopeWrapper* s) {
-  return reinterpret_cast<napi_handle_scope>(s);
-}
-
-HandleScopeWrapper* V8HandleScopeFromJsHandleScope(napi_handle_scope s) {
-  return reinterpret_cast<HandleScopeWrapper*>(s);
-}
-
-napi_escapable_handle_scope
-  JsEscapableHandleScopeFromV8EscapableHandleScope(
-    EscapableHandleScopeWrapper* s) {
-  return reinterpret_cast<napi_escapable_handle_scope>(s);
-}
-
-EscapableHandleScopeWrapper*
-  V8EscapableHandleScopeFromJsEscapableHandleScope(
-    napi_escapable_handle_scope s) {
-  return reinterpret_cast<EscapableHandleScopeWrapper*>(s);
-}
-
 //=== Conversion between V8 Handles and napi_value ========================
 
 // This is assuming v8::Local<> will always be implemented with a single
@@ -552,9 +528,6 @@ void napi_module_register_cb(v8::Local<v8::Object> exports,
 
 // Registers a NAPI module.
 void napi_module_register(napi_module* mod) {
-  // NAPI modules always work with the current node version.
-  int module_version = NODE_MODULE_VERSION;
-
   node::node_module* nm = new node::node_module {
     -1,
     mod->nm_flags,
@@ -652,14 +625,16 @@ NAPI_NO_RETURN void napi_fatal_error(const char* location,
                                      size_t message_len) {
   const char* location_string = location;
   const char* message_string = message;
-  if (location_len != -1) {
+
+  if (location_len != NAPI_AUTO_LENGTH) {
     char* location_nullterminated = static_cast<char*>(
       malloc((location_len + 1) * sizeof(char)));
     strncpy(location_nullterminated, location, location_len);
     location_nullterminated[location_len] = 0;
     location_string = location_nullterminated;
   }
-  if (message_len != -1) {
+
+  if (message_len != NAPI_AUTO_LENGTH) {
     char* message_nullterminated = static_cast<char*>(
       malloc((message_len + 1) * sizeof(char)));
     strncpy(message_nullterminated, message, message_len);
@@ -689,7 +664,7 @@ napi_status napi_create_function(napi_env env,
   if (utf8name != nullptr) {
     CHECK_JSRT(JsCreateString(
       utf8name,
-      length == -1 ? strlen(utf8name) : length,
+      length == NAPI_AUTO_LENGTH ? strlen(utf8name) : length,
       &name));
   }
 
@@ -1513,9 +1488,17 @@ napi_status napi_get_value_uint32(napi_env env,
 napi_status napi_get_value_int64(napi_env env, napi_value v, int64_t* result) {
   CHECK_ARG(result);
   JsValueRef value = reinterpret_cast<JsValueRef>(v);
-  int valueInt;
-  CHECK_JSRT_EXPECTED(JsNumberToInt(value, &valueInt), napi_number_expected);
-  *result = static_cast<int64_t>(valueInt);
+
+  double valueDouble;
+  CHECK_JSRT_EXPECTED(JsNumberToDouble(value, &valueDouble),
+                      napi_number_expected);
+
+  if (std::isnan(valueDouble)) {
+    *result = 0;
+  } else {
+    *result = static_cast<int64_t>(valueDouble);
+  }
+
   return napi_ok;
 }
 

test/addons-napi/test_number/test.js

@@ -45,3 +45,10 @@ assert.strictEqual(1, test_number.TestInt32Truncation(4294967297));
 assert.strictEqual(0, test_number.TestInt32Truncation(4294967296));
 assert.strictEqual(-1, test_number.TestInt32Truncation(4294967295));
 assert.strictEqual(3, test_number.TestInt32Truncation(4294967296 * 5 + 3));
+
+// validate that the boundaries of safe integer can be passed through
+// successfully
+assert.strictEqual(Number.MAX_SAFE_INTEGER,
+                   test_number.TestInt64Truncation(Number.MAX_SAFE_INTEGER));
+assert.strictEqual(Number.MIN_SAFE_INTEGER,
+                   test_number.TestInt64Truncation(Number.MIN_SAFE_INTEGER));

test/addons-napi/test_number/test_number.c

@@ -45,10 +45,33 @@ napi_value TestInt32Truncation(napi_env env, napi_callback_info info) {
   return output;
 }
 
+napi_value TestInt64Truncation(napi_env env, napi_callback_info info) {
+  size_t argc = 1;
+  napi_value args[1];
+  NAPI_CALL(env, napi_get_cb_info(env, info, &argc, args, NULL, NULL));
+
+  NAPI_ASSERT(env, argc >= 1, "Wrong number of arguments");
+
+  napi_valuetype valuetype0;
+  NAPI_CALL(env, napi_typeof(env, args[0], &valuetype0));
+
+  NAPI_ASSERT(env, valuetype0 == napi_number,
+      "Wrong type of arguments. Expects a number as first argument.");
+
+  int64_t input;
+  NAPI_CALL(env, napi_get_value_int64(env, args[0], &input));
+
+  napi_value output;
+  NAPI_CALL(env, napi_create_int64(env, input, &output));
+
+  return output;
+}
+
 napi_value Init(napi_env env, napi_value exports) {
   napi_property_descriptor descriptors[] = {
     DECLARE_NAPI_PROPERTY("Test", Test),
     DECLARE_NAPI_PROPERTY("TestInt32Truncation", TestInt32Truncation),
+    DECLARE_NAPI_PROPERTY("TestInt64Truncation", TestInt64Truncation),
   };
 
   NAPI_CALL(env, napi_define_properties(