Monday, March 23, 2020

The TDD Course for Beginners : Learn by Practicing 7 Katas

Learn how to do Test Driven Development using Ruby within 4 hours. You will get:

1. The transcript of the entire course in PDF.
2. TDD in Ruby ebook in PDF, Mobi and Epub formats
3. Members only TDD tutorial website that walks you through every exercise in the course.
4. Monthly Google hangout Q&A session that supports your learning objectives.
5. All the slides used in the course in PDF format.
6. TDD Course Tools Checklist for every sub-skill covered in the course.
7. TDD in Ruby Course Outline that was used to create the course.

How do I get access to the videos and all the above goodies?

For only $9 / month, you get my support and access to all of the above. Send me payment via Paypal to bala.paranj@zepho.com to get access today!

Testimonials

Jeff Casimir, Principal, Jumpstart Lab

Pros:-

The actual coding TDD examples for Fizz Buzz and Fibonacci were really well done
During the coding exercises the refactoring of code was a good illustration of how to improve certainty of test results
Good overview of the importance of testing
Each lecture / exercise was only 5-10 minutes providing nice incremental gains in the course

Cons:-

The instructor's delivery was not engaging - students tune out very quickly
First 61 minutes were very high level and included no actual coding
Instructors speaking voice was monotone and slow for the entire course no inflection, jokes, or anything to keep your attention
The audio between segments varied in quality to sometimes low quality not ideal for a $200 course
Instructor used whiteboard to write notes and diagram concepts during lecture (also wrote in cursive and at least 1 time wrote off viewable screen)

Summary:

We wouldn't recommend it for Turing pre-requisite work, but could be valuable supporting material for students in the class.

Mylene Reiners

When you want a theoretical background on TDD, this course is great (and the Ruby part is not too hard for people knowing only a little Ruby...)

Yury Voloshin

This is a good introduction to TDD for those who either have never used it or who have a very rudimentary understanding of it. Some of the more advanced concepts toward the end are somewhat rushed through, but I' sure that can't be helped due to time constraints and to the nature of the material. At least now I know the topics that I need to into more deeply.

Nikolas

This course introduces a solid foundation for practicing TDD. The instructor definitely knows what he's teaching. Information is divided in small logical and understandable chunks/lectures.

Jesse Mignac

Techniques, examples and theoretical material. This course is a really nice start to TDD with Ruby

Andrew Platkin

Very good pace and learned alot

Thom Parkin

The beginning of this course seems a bit slow and very dry. But your patience is well rewarded because the depth and detail of information provided is priceless! Mr. Paranj uses a time-tested technique of methodical presentation of ideas, one built upon the other, to its ultimate success. I am grateful and impressed by this course.

Jikku Jose

I am very happy to have such a comprehensive course from Mr. Paranj. I have been trying to do TDD in my projects for quite sometime without much success. This course helped a lot to expose much of the concepts and details one should focus on while doing TDD.  I wish the examples mentioned in "Fake It till you make it" and "Triangulation" was a bit more involved rather than the basic ones presented so that the techniques could be better understood.  I thank Mr. Paranj and Udemy for the course, it really helped me. Hope more advanced Ruby related materials can be brought out.

Pawel Jackowski

Instructor knows TDD and explains it with ease. I am quite familiar with technique and just wanted to refresh knowledge and I still recommend course. I definitely learned something about common mistakes and importance of every step in TDD sequence. I enrolled for free.

Steve Freeman

Instructor uses katas very effectively to show the patterns behind TDD. His clear examples and pointers to material for further study were very helpful and I look forward to practicing katas on my own. If you're trying to make sense of TDD I highly recommend this class!

What are the requirements?

Basic programming skills
You need to have your favorite text editor installed on your machine
You need Ruby 2.0 or above installed on your machine.

What am I going to get from this course?

Do Problem Domain Analysis
Do Solution Domain Analysis
Design Test Cases
Write Tests First
Apply Canonical Test Structure when having difficulty in writing a test first.

Who is the target audience?

Beginners to Test Driven Development
You should already know how to write programs in Ruby
You should already know how to create an instance of a class and invoke methods.

Course Description

In this course you will learn the basics of Test Driven Development. You will learn how to do Problem Domain Analysis, Solution Domain Analysis, Designing Test Cases and Writing Tests First. Learn the Basics of Test Driven Development in Ruby using this Beginner Course. This course will take 4 hours to complete.

Practice skills using 7 katas

  • Use the downloadable checklists to guide you when coding
  • Learn 3 different techniques to do Test Driven Development
  • You can be more productive if you practice TDD at work. Companies that adopt Test Driven Development are great places to work.
The material used in this course is the result of feedback from students who attended my TDD bootcamps and tutorials. This is a course designed by a developer for developers.

The concepts are first explained in a presentation. Then a coding demo illustrates how to apply the theory in practice. At the end of the lesson an exercise is given to reinforce the material.

You will learn the following concepts:
  • Assertions
  • The structure of a test
  • TDD Cycle
  • Minimal Implementation
  • Starter Test
  • Story Test
  • Next Test
  • Refactoring
  • Obvious Implementation
  • Fake It Till You Make It
  • Triangulation
  • Hiding Implementation Details
You will be able to attend interviews for companies that demand TDD skills to get a six-figure salary. Complete with working files and code samples, you'll be able to work alongside the instructor and will receive a verifiable certificate of completion upon finishing the course. I have interviewed people and I have seen the common mistakes made by candidates.





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For only $9 / month, you get my support and access to all of the above. Send me payment via Paypal to bala.paranj@zepho.com to get access today!

Friday, February 17, 2017

Horrible Coding by Amazon Developers

If you do not have Internet connectivity, it will crash with meaningless error:

Users/bparanj/.rvm/rubies/ruby-2.3.3/lib/ruby/2.3.0/net/http.rb:933:in `connect_nonblock': SSL_connect returned=1 errno=0 state=error: certificate verify failed (Seahorse::Client::NetworkingError)

This can also happen if you do not click on agree button when you are on starbucks coffee shop.

If you provide a invalid file in a s3 bucket, aws-sdk version 2 will crash with meaningless error message:

 # []>>
ArgumentError: expected params[:key] to be a String, got value []> (class: Rake::FileTask) instead.

You must provide a valid file name. The library is not capable of telling you the cause of the problem and how to fix it. It will crash inside aws-sdk-core with an ugly stack trace:

/gems/aws-sdk-core-2.7.0/lib/aws-sdk-core/param_validator.rb:28:in `validate!'
/gems/aws-sdk-core-2.7.0/lib/aws-sdk-core/param_validator.rb:13:in `validate!'
/gems/aws-sdk-core-2.7.0/lib/aws-sdk-core/plugins/param_validator.rb:20:in `call'
/gems/aws-sdk-core-2.7.0/lib/seahorse/client/plugins/raise_response_errors.rb:14:in `call'
/gems/aws-sdk-core-2.7.0/lib/aws-sdk-core/plugins/s3_sse_cpk.rb:19:in `call'
/gems/aws-sdk-core-2.7.0/lib/aws-sdk-core/plugins/s3_dualstack.rb:24:in `call'
/gems/aws-sdk-core-2.7.0/lib/aws-sdk-core/plugins/s3_accelerate.rb:34:in `call'
/gems/aws-sdk-core-2.7.0/lib/aws-sdk-core/plugins/idempotency_token.rb:18:in `call'
/gems/aws-sdk-core-2.7.0/lib/aws-sdk-core/plugins/param_converter.rb:20:in `call'
/gems/aws-sdk-core-2.7.0/lib/seahorse/client/plugins/response_target.rb:21:in `call'
/gems/aws-sdk-core-2.7.0/lib/seahorse/client/request.rb:70:in `send_request'
/gems/aws-sdk-core-2.7.0/lib/seahorse/client/base.rb:207:in `block (2 levels) in define_operation_methods'
/gems/aws-sdk-resources-2.7.0/lib/aws-sdk-resources/request.rb:24:in `call'
/gems/aws-sdk-resources-2.7.0/lib/aws-sdk-resources/operations.rb:41:in `call'
/gems/aws-sdk-resources-2.7.0/lib/aws-sdk-resources/operations.rb:61:in `call'
/gems/aws-sdk-resources-2.7.0/lib/aws-sdk-resources/resource.rb:147:in `load'
/gems/aws-sdk-resources-2.7.0/lib/aws-sdk-resources/resource.rb:120:in `data'
/gems/aws-sdk-resources-2.7.0/lib/aws-sdk-resources/resource.rb:223:in `block in add_data_attribute'

/gems/railties-4.2.7/lib/rails/commands/console.rb:110:in `start'
/gems/railties-4.2.7/lib/rails/commands/console.rb:9:in `start'
/gems/railties-4.2.7/lib/rails/commands/commands_tasks.rb:68:in `console'
/gems/railties-4.2.7/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
/gems/railties-4.2.7/lib/rails/commands.rb:17:in `'





AWS SDK Ruby


Aws::Errors::MissingRegionError
Aws::Errors::MissingCredentialsError (unable to sign request without credentials set). In aws sdk version 2:

    Aws.config = {
      region: 'us-east-1',
      credentials: Aws::Credentials.new(ENV['AWS_ACCESS_KEY_ID'], ENV['AWS_SECRET_ACCESS_KEY'])
    }

Tuesday, February 14, 2017

Ruby Gems Naming Convention

How does the gem name and the require relate to each other? Should I use underscore of the gem name? Should I use / ?

The screenshot shows the rubygems recommendation for naming conventions and how developers can require a ruby gem. This also makes it clear how the directory structure is related to the require of the gem. You can see whether it is a class or module and how the namespace relates to requiring a gem.

Sunday, February 12, 2017

Readline was unable to be required, if you need completion or history install readline then reinstall the ruby.

1. brew install openssl --force


2. rvm requirements
Checking requirements for osx.
Updating Homebrew...
Installing requirements for osx.
Updating system.....
Installing required custom packages: homebrew/versions.
Installing required packages: zlib, zlib, gcc46, openssl.............
Somehow it happened there is no executable 'openssl',
run 'brew doctor' and make sure latest '' is installed properly.
RVM autolibs is now configured with mode '4' =>
  'Allow RVM to use package manager if found, install missing dependencies, install package manager (only OS X).',
please run `rvm autolibs enable` to let RVM do its job or run and read `rvm autolibs [help]`
or visit https://rvm.io/rvm/autolibs for more information.

Requirements installation failed with status: 12.

3. rvm pkg install readline
Beware, 'rvm pkg ...' is deprecated, read about the new autolibs feature: 'rvm help autolibs'.

rvm reinstall all --force


Twitter Bootstrap 4 Testimonials


Friday, February 10, 2017

How to migrate your RSS feed in Rails

I am migrating from libsyn to save $40 / month. I host all the videos on S3 saving lot of money. If you go live with your RSS feed pointing to libysyn when you switch over to your Rails rss feed, you must add:

xml.itunes :"new-feed-url", 'https://www.rubyplus.com/episodes.rss'

in index.rss.builder inside the channel tag to migrate successfully. This is in addition to logging in to your libshit account and changing the RSS feed to point to your new feed generated by your Rails app.

Thursday, February 09, 2017

How to set default date in date_select of Rails 5

You can use the selected option to specify the default date.

    <%= f.date_select :published_at, order: [:month, :day, :year], start_year: Date.current.year - 5, end_year: Date.current.year + 1, selected: @date %>

In my case, I set it in the controller to today's date:

@date = Date.today