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test: Write tests for Value class
This change includes the following new tests: - TypeChecker(e.g. IsUndefined, IsObject) tests - TypeConverter from Native to JS(e.g. ToString) tests PR-URL: #197 Reviewed-By: Michael Dawson <[email protected]>
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‎test/basic_types/value.cc‎

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#include "napi.h"
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using namespace Napi;
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static Value IsEmpty(const CallbackInfo& info) {
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Value value;
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return Boolean::New(info.Env(), value.IsEmpty());
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}
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static Value IsUndefined(const CallbackInfo& info) {
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return Boolean::New(info.Env(), info[0].IsUndefined());
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}
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static Value IsNull(const CallbackInfo& info) {
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return Boolean::New(info.Env(), info[0].IsNull());
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}
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static Value IsBoolean(const CallbackInfo& info) {
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return Boolean::New(info.Env(), info[0].IsBoolean());
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}
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static Value IsNumber(const CallbackInfo& info) {
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return Boolean::New(info.Env(), info[0].IsNumber());
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}
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static Value IsString(const CallbackInfo& info) {
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return Boolean::New(info.Env(), info[0].IsString());
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}
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static Value IsSymbol(const CallbackInfo& info) {
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return Boolean::New(info.Env(), info[0].IsSymbol());
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}
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static Value IsArray(const CallbackInfo& info) {
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return Boolean::New(info.Env(), info[0].IsArray());
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}
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static Value IsArrayBuffer(const CallbackInfo& info) {
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return Boolean::New(info.Env(), info[0].IsArrayBuffer());
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}
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static Value IsTypedArray(const CallbackInfo& info) {
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return Boolean::New(info.Env(), info[0].IsTypedArray());
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}
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static Value IsObject(const CallbackInfo& info) {
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return Boolean::New(info.Env(), info[0].IsObject());
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}
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static Value IsFunction(const CallbackInfo& info) {
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return Boolean::New(info.Env(), info[0].IsFunction());
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}
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static Value IsPromise(const CallbackInfo& info) {
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return Boolean::New(info.Env(), info[0].IsPromise());
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}
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static Value ToBoolean(const CallbackInfo& info) {
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return info[0].ToBoolean();
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}
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static Value ToNumber(const CallbackInfo& info) {
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return info[0].ToNumber();
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}
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static Value ToString(const CallbackInfo& info) {
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return info[0].ToString();
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}
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static Value ToObject(const CallbackInfo& info) {
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return info[0].ToObject();
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}
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Object InitBasicTypesValue(Env env) {
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Object exports = Object::New(env);
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exports["isEmpty"] = Function::New(env, IsEmpty);
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exports["isUndefined"] = Function::New(env, IsUndefined);
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exports["isNull"] = Function::New(env, IsNull);
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exports["isBoolean"] = Function::New(env, IsBoolean);
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exports["isNumber"] = Function::New(env, IsNumber);
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exports["isString"] = Function::New(env, IsString);
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exports["isSymbol"] = Function::New(env, IsSymbol);
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exports["isArray"] = Function::New(env, IsArray);
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exports["isArrayBuffer"] = Function::New(env, IsArrayBuffer);
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exports["isTypedArray"] = Function::New(env, IsTypedArray);
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exports["isObject"] = Function::New(env, IsObject);
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exports["isFunction"] = Function::New(env, IsFunction);
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exports["isPromise"] = Function::New(env, IsPromise);
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exports["toBoolean"] = Function::New(env, ToBoolean);
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exports["toNumber"] = Function::New(env, ToNumber);
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exports["toString"] = Function::New(env, ToString);
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exports["toObject"] = Function::New(env, ToObject);
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return exports;
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}

‎test/basic_types/value.js‎

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'use strict';
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const buildType = process.config.target_defaults.default_configuration;
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const assert = require('assert');
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test(require(`../build/${buildType}/binding.node`));
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test(require(`../build/${buildType}/binding_noexcept.node`));
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function test(binding) {
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function detailedTypeOf(value) {
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const type = typeof value;
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if (type !== 'object')
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return type;
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if (value === null)
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return 'null';
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if (Array.isArray(value))
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return 'array';
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if (!value.constructor)
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return type;
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if (value instanceof ArrayBuffer)
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return 'arraybuffer';
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if (ArrayBuffer.isView(value))
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return 'typedarray';
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if (value instanceof Promise)
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return 'promise';
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return 'object';
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}
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function typeCheckerTest(typeChecker, expectedType) {
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const testValueList = [
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undefined,
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null,
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true,
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10,
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'string',
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Symbol('symbol'),
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[],
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new ArrayBuffer(10),
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new Int32Array(new ArrayBuffer(12)),
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{},
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function() {},
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new Promise((resolve, reject) => {})
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];
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testValueList.forEach((testValue) => {
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if (testValue !== null && expectedType === 'object') {
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assert.strictEqual(typeChecker(testValue), typeof testValue === expectedType);
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} else {
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assert.strictEqual(typeChecker(testValue), detailedTypeOf(testValue) === expectedType);
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}
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});
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}
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function typeConverterTest(typeConverter, expectedType) {
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const testValueList = [
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true,
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false,
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0,
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10,
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'string',
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[],
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new ArrayBuffer(10),
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new Int32Array(new ArrayBuffer(12)),
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{},
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function() {},
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new Promise((resolve, reject) => {})
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];
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testValueList.forEach((testValue) => {
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const expected = expectedType(testValue);
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const actual = typeConverter(testValue);
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if (isNaN(expected)) {
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assert(isNaN(actual));
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} else {
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assert.deepStrictEqual(typeConverter(testValue), expectedType(testValue));
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}
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});
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}
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const value = binding.basic_types_value;
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typeCheckerTest(value.isUndefined, 'undefined');
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typeCheckerTest(value.isNull, 'null');
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typeCheckerTest(value.isBoolean, 'boolean');
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typeCheckerTest(value.isNumber, 'number');
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typeCheckerTest(value.isString, 'string');
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typeCheckerTest(value.isSymbol, 'symbol');
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typeCheckerTest(value.isArray, 'array');
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typeCheckerTest(value.isArrayBuffer, 'arraybuffer');
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typeCheckerTest(value.isTypedArray, 'typedarray');
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typeCheckerTest(value.isObject, 'object');
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typeCheckerTest(value.isFunction, 'function');
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typeCheckerTest(value.isPromise, 'promise');
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typeConverterTest(value.toBoolean, Boolean);
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assert.strictEqual(value.toBoolean(undefined), false);
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assert.strictEqual(value.toBoolean(null), false);
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typeConverterTest(value.toNumber, Number);
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assert(isNaN(value.toNumber(undefined)));
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assert.strictEqual(value.toNumber(null), 0);
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typeConverterTest(value.toString, String);
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assert.strictEqual(value.toString(undefined), 'undefined');
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assert.strictEqual(value.toString(null), 'null');
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typeConverterTest(value.toObject, Object);
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}

‎test/binding.cc‎

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Object InitArrayBuffer(Env env);
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Object InitAsyncWorker(Env env);
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Object InitBasicTypesNumber(Env env);
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Object InitBasicTypesValue(Env env);
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Object InitBuffer(Env env);
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Object InitError(Env env);
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Object InitExternal(Env env);
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exports.Set("arraybuffer", InitArrayBuffer(env));
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exports.Set("asyncworker", InitAsyncWorker(env));
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exports.Set("basic_types_number", InitBasicTypesNumber(env));
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exports.Set("basic_types_value", InitBasicTypesValue(env));
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exports.Set("buffer", InitBuffer(env));
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exports.Set("error", InitError(env));
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exports.Set("external", InitExternal(env));

‎test/binding.gyp‎

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'arraybuffer.cc',
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'asyncworker.cc',
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'basic_types/number.cc',
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'basic_types/value.cc',
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'binding.cc',
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'buffer.cc',
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'error.cc',

‎test/index.js‎

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'arraybuffer',
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'asyncworker',
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'basic_types/number',
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'basic_types/value',
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'buffer',
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'error',
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'external',

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