Tanya  Shields

Tanya Shields

1597979647

Jest — Advancing the Basics

So we covered the basics of setting Jest up in a Javascript project and testing some basic functions.

Now let’s have a look at expanding our knowledge by testing more matchers.

Matchers are fantastic, they essentially help translate your code into bitesize, readable, english words / sentences. For example the matcher ‘toBe.’ Does exactly what it says, it compares values or checks the identity of object instances. Essentially it is better than using the strict equality operator ‘===’ during testing.

For a full list of matchers follow this link.


In the previous blog, I looked briefly at .toBe, .toEqual, .not. So, I am going to move on to some slightly different ones for this blog and next week will be testing async functions.

Let’s say we have written a function that is expected to add a new student to an array.

Image for post

Here we have a basic function, a basic student array and then I am calling the function at the bottom. So I want to test that an item with a specific structure and values is contained within the students array after calling the function! Aka. does Isak’s object get added to the students array.

Perfect, there’s a matcher for this. It’s called .toContainEqual.

So firstly, we need to set up our basic test block.

Image for post

note array and new student object are purely there to represent what will be added in.

  • Line 2 is using the inbuilt method test and has a callback function and a string that is used to primarily describe what you are testing. In this case, does the students array contain the newly added student.
  • Line 3 is using the expect method which will look at the array and see if it contains the new student object.

Now that we have written our test block with some pseudocode, let’s start building out the function in our test.

Image for post

Firstly, I need to import the method we have written from the correct Javascript file. So this line of code is essentially saying import the function, addName from the Javascript file called ‘main’. You will also need to export the function from the main file.

#javascript #software-testing #jest #javascript-testing #testing

What is GEEK

Buddha Community

Jest — Advancing the Basics
Biju Augustian

Biju Augustian

1574339995

Learn Python Tutorial from Basic to Advance

Description
Become a Python Programmer and learn one of employer’s most requested skills of 21st century!

This is the most comprehensive, yet straight-forward, course for the Python programming language on Simpliv! Whether you have never programmed before, already know basic syntax, or want to learn about the advanced features of Python, this course is for you! In this course we will teach you Python 3. (Note, we also provide older Python 2 notes in case you need them)

With over 40 lectures and more than 3 hours of video this comprehensive course leaves no stone unturned! This course includes tests, and homework assignments as well as 3 major projects to create a Python project portfolio!

This course will teach you Python in a practical manner, with every lecture comes a full coding screencast and a corresponding code notebook! Learn in whatever manner is best for you!

We will start by helping you get Python installed on your computer, regardless of your operating system, whether its Linux, MacOS, or Windows, we’ve got you covered!

We cover a wide variety of topics, including:

Command Line Basics
Installing Python
Running Python Code
Strings
Lists
Dictionaries
Tuples
Sets
Number Data Types
Print Formatting
Functions
Scope
Built-in Functions
Debugging and Error Handling
Modules
External Modules
Object Oriented Programming
Inheritance
Polymorphism
File I/O
Web scrapping
Database Connection
Email sending
and much more!
Project that we will complete:

Guess the number
Guess the word using speech recognition
Love Calculator
google search in python
Image download from a link
Click and save image using openCV
Ludo game dice simulator
open wikipedia on command prompt
Password generator
QR code reader and generator
You will get lifetime access to over 40 lectures.

So what are you waiting for? Learn Python in a way that will advance your career and increase your knowledge, all in a fun and practical way!

Basic knowledge
Basic programming concept in any language will help but not require to attend this tutorial
What will you learn
Learn to use Python professionally, learning both Python 2 and Python 3!
Create games with Python, like Tic Tac Toe and Blackjack!
Learn advanced Python features, like the collections module and how to work with timestamps!
Learn to use Object Oriented Programming with classes!
Understand complex topics, like decorators.
Understand how to use both the pycharm and create .py files
Get an understanding of how to create GUIs in the pycharm!
Build a complete understanding of Python from the ground up!

#Learn Python #Learn Python from Basic #Python from Basic to Advance #Python from Basic to Advance with Projects #Learn Python from Basic to Advance with Projects in a day

Ananya Gupta

1604922206

Top 7 Advantages Of Advanced Excel Learning

Advanced Excel Certification offers numerous job opportunities that have come up. Lately, companies search for a talented personality who holds great knowledge in excel. However, simply basic knowledge isn’t sufficient. If you would like to be a part of a well-renowned company then you want to have the excel certification matching industrial standards.

Whether you’re seeking higher growth within an equivalent company or expecting an honest hike from the new company, complicated excel training courses with certification can surely increase your chances to be on the brink of the success ladder. Join an advanced online excel training class and improve your skills.

Know More About Advanced Excel?

The word itself explains the meaning of this course. this is often one quite skill that sets a learning benchmark for MS Excel. It offers a transparent insight to all or any of the simplest and therefore the most advanced features that are now available within the current version of Microsoft Excel.

In this competitive era where your colleagues would equally be striving to urge a far better post than you, if you excel yourself in some good certification courses then surely there’s no looking back for you.

This type of certification is all about brushing up your administration, management, and analytical skills which in today’s market is sort of important. To match up with the flexible needs of the clients, it’s important for you to be advanced and for this such training can certainly be helpful.

Some Mind-Blowing Benefits You Get:

There are ample Excel Training Courses that you simply may encounter, but choosing a certification course in Advanced excel possesses its perks for you also as for the corporate. Listed are a few that you simply got to know.

1.There is a superior recognition that you simply get
2.As compared to non-certified professionals, you occupy the highest at the competition
3.Employers will have you ever within the priority for giant important projects
4.If you’re a freelancer, then such advanced training is often an excellent learning experience
5.For those that wish to urge within the management, the world can have a boosting knowledge
6.Administration skills also get brushed up and a replacement range of job opportunities opens
7.There is an honest hike in PayScale soon after you show your skills and certification to your HR

Quick Tip which will Help:

If you’re getting to join a web course to urge such certification then see thereto that the trainer who is going to be taking care of you during this course is very experienced and may provide you with the simplest possible assistance.

Now you’ll boost your knowledge during a spreadsheet, play with new financial

#advanced excel online training #advanced excel online course #advanced excel training #advanced excel course #advanced excel training in noida #advanced excel training in delhi

Tanya  Shields

Tanya Shields

1597979647

Jest — Advancing the Basics

So we covered the basics of setting Jest up in a Javascript project and testing some basic functions.

Now let’s have a look at expanding our knowledge by testing more matchers.

Matchers are fantastic, they essentially help translate your code into bitesize, readable, english words / sentences. For example the matcher ‘toBe.’ Does exactly what it says, it compares values or checks the identity of object instances. Essentially it is better than using the strict equality operator ‘===’ during testing.

For a full list of matchers follow this link.


In the previous blog, I looked briefly at .toBe, .toEqual, .not. So, I am going to move on to some slightly different ones for this blog and next week will be testing async functions.

Let’s say we have written a function that is expected to add a new student to an array.

Image for post

Here we have a basic function, a basic student array and then I am calling the function at the bottom. So I want to test that an item with a specific structure and values is contained within the students array after calling the function! Aka. does Isak’s object get added to the students array.

Perfect, there’s a matcher for this. It’s called .toContainEqual.

So firstly, we need to set up our basic test block.

Image for post

note array and new student object are purely there to represent what will be added in.

  • Line 2 is using the inbuilt method test and has a callback function and a string that is used to primarily describe what you are testing. In this case, does the students array contain the newly added student.
  • Line 3 is using the expect method which will look at the array and see if it contains the new student object.

Now that we have written our test block with some pseudocode, let’s start building out the function in our test.

Image for post

Firstly, I need to import the method we have written from the correct Javascript file. So this line of code is essentially saying import the function, addName from the Javascript file called ‘main’. You will also need to export the function from the main file.

#javascript #software-testing #jest #javascript-testing #testing

Building A Test Runner in Jest - A How-To Guide

I use Jest nearly every day when working, and it’s a fantastic tool. It lets me ship my code with confidence, knowing that I have produced something which works as intended.

More often than not, when I write tests for my code, I end up catching something I hadn’t considered and go back to take that into account. It saves me from getting called in the evening to fix something in production. For me, that’s a big deal.

With that said, I didn’t really know how jest worked. I used it all the time, but had no real clue what was going on under the hood.

Recently, I bought Kent C Dodd’s excellent Testing JavaScript course which has been incredible for increasing my knowledge.

As part of that, he digs into how jest works under the hood, and this encouraged me to try building my own tiny version. So I want to pass on that knowledge to you!

This will be a small series of posts on each part, but you can skip ahead and see the full repo here.

Building our test runner

Today’s focus will be building the actual test runner. This simply accepts a test with a title, and a callback. We run the callback and if there are no errors, the test passes!

If an error is thrown, then we deem the test to have failed.

Take a look:

const test = async (title: string, callback: Function) => {
  try {
    await callback();
    console.log(chalk.green(`\u2713 ${title}`));
  } catch (error) {
    console.error(chalk.red(`✕ ${title}`));
    console.error(error);
  }

So as you can see, we have our test function which accepts a title which is a string, and a callback which is the function which we want to test.

We then run our callback function in a try/catch block, and assuming that nothing is caught, we say the test has passed.

This allows us to run something like this:

test('sum adds numbers', () => {
  const sum = (a, b) => a + b
  const result = sum(3, 7)
  const expected = 10
  expect(result).toBe(expected)
})

So as you can see, we pass a title, and a function where we sum two numbers: 3 and 7. But on our final line, we see something new: expect and toBe. These are our assertions and we have nothing to handle them yet.

#jest #javascript #tdd #unit-testing #javascript-top-story #how-to-build-a-jest-clone #building-test-runner-in-jest #hackernoon-top-story

Nandini roy

Nandini roy

1626279136

Blogger Advanced SEO Settings for beginners

Without proper SEO it will take more time to rank your blog posts and drive organic traffic from Google Search Results. If you have started a blog on Google Blogger and want to enable Blogger Advanced SEO settings, then stay with me till the end of this guide.

Read More

#blogger #advanced #seo settings #blogger advanced seo settings #blogger advanced settings