How do you write testable code?

Writing testable code means that the smallest components are independently verifiable. In order to do this, each component must have its dependencies injected into it. This means that code can’t reference global variables or use read/write singletons or service locators, etc.

What code is testable?

Testable code is code that’s written in such a way that it is independently verifiable. It has a well-defined programmatic interface and it can be fully tested based on that interface. Testable code receives dependencies as input parameters so that during testing fake dependencies can be injected instead.

How do you make a class unit testable?

To prepare your code to be testable:

  1. Document your assumptions and exclusions.
  2. Avoid large complex classes that do more than one thing – keep the single responsibility principle in mind.
  3. When possible, use interfaces to decouple interactions and allow mock objects to be injected.

How do you ensure a code is testable?

One of the keys to writing highly testable code is to ensure that there is a strong separation between the different parts of an application, with clear, simple APIs for interaction between those parts.

How do you write a production level code?

There are two steps:

  1. Break the code into smaller pieces that are intended to perform a specific task (may include sub tasks).
  2. Group these functions into modules (or Python files) based on their usability. This also helps you keep code organized and eases code maintainability.

How do you write a unit test case in C#?

Steps to create a unit test project

  1. Right click on the solution.
  2. Click Add.
  3. Click new project.
  4. Click Test under Visual C#
  5. Select Unit Test Project.
  6. Give the name of a test project same as the project you are going to test.
  7. Click OK.

What is production quality code?

Production quality code is that code which satisfies the customer’s requirements, and that is it.

What is production code programming?

The definition as I understand it is that production code is any code that is installed or in use on a live, non-test-bed system. A server used internally to a company is a production system if it is the live system used by the employees of the company.

How do you write a test case in unit testing?

However, every test case can be broken down into 8 basic steps.

  1. Step 1: Test Case ID.
  2. Step 2: Test Description.
  3. Step 3: Assumptions and Pre-Conditions.
  4. Step 4: Test Data.
  5. Step 5: Steps to be Executed.
  6. Step 6: Expected Result.
  7. Step 7: Actual Result and Post-Conditions.
  8. Step 8: Pass/Fail.

What is a code tester?

Code-based testing involves testing out each line of code of a program to identify bugs or errors during the software development process. Specific test cases are checked on the program to see if it performs the functions required. Moreover, code-based testing can be broken down into structural and static testing.