From 424157711269a6f0a7c10b9f9858a913855e5f93 Mon Sep 17 00:00:00 2001 From: Michael Dawson Date: Mon, 24 Apr 2017 18:59:09 -0400 Subject: [PATCH] test: test doc'd napi_get_value_int32 behaviour We chose to document this in the docs as there are different possible behaviours. Adding this test to validate that all vm implementations do it the same way. PR-URL: https://github.com/nodejs/node/pull/12633 Reviewed-By: James M Snell Reviewed-By: Colin Ihrig --- test/addons-napi/test_number/test.js | 8 ++++++++ test/addons-napi/test_number/test_number.c | 23 ++++++++++++++++++++++ 2 files changed, 31 insertions(+) diff --git a/test/addons-napi/test_number/test.js b/test/addons-napi/test_number/test.js index 885b9b599d9f25..b8ce6b7f995b66 100644 --- a/test/addons-napi/test_number/test.js +++ b/test/addons-napi/test_number/test.js @@ -37,3 +37,11 @@ assert.strictEqual(num7, test_number.Test(num7)); const num8 = Number.NEGATIVE_INFINITY; assert.strictEqual(num8, test_number.Test(num8)); + + +// validate documented behaviour when value is retrieved +// as 32 bit integer with napi_get_value_int32 +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)); diff --git a/test/addons-napi/test_number/test_number.c b/test/addons-napi/test_number/test_number.c index 4725ddb6a27e85..1054741d2de369 100644 --- a/test/addons-napi/test_number/test_number.c +++ b/test/addons-napi/test_number/test_number.c @@ -23,9 +23,32 @@ napi_value Test(napi_env env, napi_callback_info info) { return output; } +napi_value TestInt32Truncation(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."); + + int32_t input; + NAPI_CALL(env, napi_get_value_int32(env, args[0], &input)); + + napi_value output; + NAPI_CALL(env, napi_create_number(env, input, &output)); + + return output; +} + void Init(napi_env env, napi_value exports, napi_value module, void* priv) { napi_property_descriptor descriptors[] = { DECLARE_NAPI_PROPERTY("Test", Test), + DECLARE_NAPI_PROPERTY("TestInt32Truncation", TestInt32Truncation), }; NAPI_CALL_RETURN_VOID(env, napi_define_properties(