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test/js-native-api/test_date/binding.gyp

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+{
+  "targets": [
+    {
+      "target_name": "test_date",
+      "sources": [
+        "test_date.c"
+      ]
+    }
+  ]
+}

test/js-native-api/test_date/test.js

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+'use strict';
+
+const common = require('../../common');
+
+// This tests the date-related n-api calls
+
+const assert = require('assert');
+const test_date = require(`./build/${common.buildType}/test_date`);
+
+const dateTypeTestDate = test_date.createDate(1549183351);
+assert.strictEqual(test_date.isDate(dateTypeTestDate), true);
+
+assert.strictEqual(test_date.isDate(new Date(1549183351)), true);
+
+assert.strictEqual(test_date.isDate(2.4), false);
+assert.strictEqual(test_date.isDate('not a date'), false);
+assert.strictEqual(test_date.isDate(undefined), false);
+assert.strictEqual(test_date.isDate(null), false);
+assert.strictEqual(test_date.isDate({}), false);
+
+assert.strictEqual(test_date.getDateValue(new Date(1549183351)), 1549183351);

test/js-native-api/test_date/test_date.c

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+#include <js_native_api.h>
+#include "../common.h"
+#include "../entry_point.h"
+
+static napi_value createDate(napi_env env, napi_callback_info info) {
+  size_t argc = 1;
+  napi_value args[1];
+  NODE_API_CALL(env, napi_get_cb_info(env, info, &argc, args, NULL, NULL));
+
+  NODE_API_ASSERT(env, argc >= 1, "Wrong number of arguments");
+
+  napi_valuetype valuetype0;
+  NODE_API_CALL(env, napi_typeof(env, args[0], &valuetype0));
+
+  NODE_API_ASSERT(env, valuetype0 == napi_number,
+      "Wrong type of arguments. Expects a number as first argument.");
+
+  double time;
+  NODE_API_CALL(env, napi_get_value_double(env, args[0], &time));
+
+  napi_value date;
+  NODE_API_CALL(env, napi_create_date(env, time, &date));
+
+  return date;
+}
+
+static napi_value isDate(napi_env env, napi_callback_info info) {
+  napi_value date, result;
+  size_t argc = 1;
+  bool is_date;
+
+  NODE_API_CALL(env, napi_get_cb_info(env, info, &argc, &date, NULL, NULL));
+  NODE_API_CALL(env, napi_is_date(env, date, &is_date));
+  NODE_API_CALL(env, napi_get_boolean(env, is_date, &result));
+
+  return result;
+}
+
+static napi_value getDateValue(napi_env env, napi_callback_info info) {
+  napi_value date, result;
+  size_t argc = 1;
+  double value;
+
+  NODE_API_CALL(env, napi_get_cb_info(env, info, &argc, &date, NULL, NULL));
+  NODE_API_CALL(env, napi_get_date_value(env, date, &value));
+  NODE_API_CALL(env, napi_create_double(env, value, &result));
+
+  return result;
+}
+
+EXTERN_C_START
+napi_value Init(napi_env env, napi_value exports) {
+  napi_property_descriptor descriptors[] = {
+    DECLARE_NODE_API_PROPERTY("createDate", createDate),
+    DECLARE_NODE_API_PROPERTY("isDate", isDate),
+    DECLARE_NODE_API_PROPERTY("getDateValue", getDateValue),
+  };
+
+  NODE_API_CALL(env, napi_define_properties(
+      env, exports, sizeof(descriptors) / sizeof(*descriptors), descriptors));
+
+  return exports;
+}
+EXTERN_C_END