Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
The util.getSystemErrorName() method is used for returning the string name of the numeric error code that is returned from the Node.js API. There is a mapping between the error codes and error names which is platform-dependent.Syntaxutil.getSystemErrorName(err)ParametersIt takes a single parameter −err −This parameter takes input as a numeric value that will specify the error number or the error code.The function returns the error name based upon the error code or error number passed in the err parameter.Some common system errors are - EACCES, EEXIST, EISDIR, ENOENT, ENOTDIR, ENOTEMPTY, etc. Browse this page to find the complete information about system error ... Read More
The util.types.isFloat64Array() method checks whether the passed value is a builtin Float64Array instance or not. It returns True if the above condition holds, else False.Syntaxutil.types.isFloat64Array(value)ParametersIt takes only one parameter −value − This input value takes input for the required parameter and checks if it is a Float64Array instance or not.It returns True or false based upon the input value passed.Example 1Create a file with the name "isFloat64Array.js" and copy the following code snippet. After creating the file, use the command "node isFloat64Array.js" to run this code.// util.types.isFloat64Array() Demo Example // Importing the util & assert module const util = ... Read More
The util.types.isProxy() method checks whether the passed value is a built-in Proxy instance or not. If the above condition is satisfied, it returns True, else False.Syntaxutil.types.isProxy(value)ParametersIt takes only one parameter −value − This input value takes input for the required parameter and checks if it is a Proxy instance or not.It returns True or False based upon the input value passed.Example 1Create a file "isProxy.js" and copy the following code snippet. After creating the file, use the command "node isProxy.js" to run this code.// util.types.isProxy() Demo Example // Importing the util module const util = require('util'); // Defining ... Read More
The util.types.isArrayBufferView() checks whether the passed value is an instance of the ArrayBuffer views, or typed array objects like DataView. This method returns True if the above conditions are satisfied, else it returns False.Syntaxutil.types.isArrayBufferView(value)ParametersIt takes only one parameter −value − This input parameter takes input for the required datatype and checks if it is an ArrayBuffer or a typed array objectIt returns True or False based upon the input value passed.Example 1Create a file with the name "isArrayBufferView.js" and copy the following code snippet. After creating the file, use the command "node isArrayBufferView.js" to run this code.// util.types.isArrayBufferView() Demo Example ... Read More
The util.types.isInt16Array() method checks whether the passed value is a built-in Int16Array instance or not. If the above condition is satisfied, it returns True, else False.Syntaxutil.types.isInt16Array(value)ParametersIt takes only one parameter −value − This input value takes input for the required parameter and checks if it's an Int16Array instance or not.It returns True or False based upon the input value passed.Example 1Create a file with the name "isInt16Array.js" and copy the following code snippet. After creating the file, use the command "node isInt16Array.js" to run this code.// util.types.isInt16Array() Demo Example // Importing the util module const util = require('util'); ... Read More
The util.types.isAsyncFunction() checks whether the passed value is an async function or not. If the above condition holds, it returns True, else False.Syntaxutil.types.isAsyncFunction(value)ParametersIt takes only one parameter −value − This input value takes input for the required parameter and checks if it is an async function or not.It returns True or False based upon the input value passed.Example 1Create a file with the name "isAsyncFunction.js" and copy the following code snippet. After creating the file, use the command "node isAsyncFunction.js" to run this code.// util.types.isArgumentsObject() Demo Example // Importing the util module const util = require('util'); // Passing ... Read More
The util.promisify() method basically takes a function as an input that follows the common Node.js callback style, i.e., with a (err, value) and returns a version of the same that returns a promise instead of a callback.Syntaxutil.promisify(original)ParametersIt takes only one parameter −original −This parameter takes an input for the function and returns them as a promise.Example 1Create a file with the name "promisify.js" and copy the following code snippet. After creating the file, use the command "node promisify.js" to run this code.// util.promisify() Demo example // Importing the fs and util modules const fs = require('fs'); const util = ... Read More
We will learn about Mainframe testing in this section, which is used to test software, applications, and services produced on Mainframe Systems.We will also learn about mainframe attributes, mainframe testing types, how to perform it, the various challenges and troubleshooting while performing mainframe testing, various commands used in mainframe testing, some common issues encountered during mainframe testing, and Mainframe Automation Testing Tools.We'll learn about the Mainframe before diving into the concept of Mainframe testing.What is a Mainframe?The mainframe is a multi-user computer system with great performance and speed. The mainframe is the most secure, scalable, and dependable machine system available.In ... Read More
Load TestingLoad testing is a type of non-functional software testing in which the execution of a software application is judged under a particular load. It controls how the software application works when a large number of people use it at the same time. Prior to deployment, load testing is done to detect performance bottlenecks and guarantee that software programs are stable and run smoothly.This analysis typically determines: -An application's maximum operational capacityExamine whether the current infrastructure is capable of handling the application.The app's viability in terms of peak user load is debatable.The maximum number of concurrent users supported by an ... Read More
HealthCare Domain TestingHealthcare domain testing is a method of evaluating a healthcare application for criteria such as standards, safety, compliance, and cross-dependency with other organizations. The goal of healthcare domain testing is to assure the application's quality, dependability, performance, safety, and efficiency.Knowledge of the Health Care Domain at a Basic LevelThe single body that is a hospital or a provider weaves the entire healthcare system together (doctor).Among the other entities are −Insurance company: Medicare, Medicaid, BCBS, etc.Patient/Consumers: Patient EnrolledRegulatory Authority: HIPAA, OASIS assessment, and HCFA 1500, etc.Health-care and Life-Science solution VendorsThe Basics of Health-Care TerminologyProvider − A health care professional ... Read More