How To Reuse Beforeeach Aftereach In Jasmine Js

When working with Jasmine JS for testing your JavaScript code, the `beforeEach` and `afterEach` functions play a vital role in setting up and tearing down your test environment. They are perfect for running specific code before and after each test case, ensuring a clean slate for your tests.

However, there are times when you might want to reuse some setup or teardown logic across multiple test suites. In such cases, reusing `beforeEach` and `afterEach` blocks can save you time and make your test suite more maintainable.

To achieve this in Jasmine, you can define reusable functions for `beforeEach` and `afterEach`, and then call these functions within your test suites. This approach enables you to keep your setup and teardown logic DRY (Don’t Repeat Yourself) and avoids duplication.

Here's a step-by-step guide on how to reuse `beforeEach` and `afterEach` in Jasmine JS:

1. **Define Reusable Functions:**
Start by defining your reusable setup and teardown functions outside of the test suites. For example, you could create a function named `commonSetup` to encapsulate your common setup logic and `commonTeardown` for teardown operations.

2. **Call Reusable Functions in beforeEach and afterEach Blocks:**
Inside your test suites, instead of directly nesting your setup and teardown logic within `beforeEach` and `afterEach` blocks, call these reusable functions. This way, the same setup and teardown logic can be invoked across multiple test suites.

Javascript

function commonSetup() {
        // Common setup logic
    }

    function commonTeardown() {
        // Common teardown logic
    }

    describe('Example Test Suite', () =&gt; {
        beforeEach(() =&gt; {
            commonSetup();
        });

        afterEach(() =&gt; {
            commonTeardown();
        });

        it('Test Case 1', () =&gt; {
            // Test logic
        });

        it('Test Case 2', () =&gt; {
            // Test logic
        });
    });

3. **Reuse Across Multiple Test Suites:**
By defining your setup and teardown logic as reusable functions, you can easily reuse them across multiple test suites. This promotes consistency in your test environment and simplifies maintenance.

4. **Benefits of Reusing beforeEach and afterEach:**
- Promotes code reusability and maintainability
- Avoids duplication of setup and teardown logic
- Simplifies test suite maintenance and updates

In conclusion, by leveraging the power of reusable functions, you can enhance the reusability and maintainability of your Jasmine test suites. Adopting this approach not only saves you time but also ensures a consistent testing environment across your projects.

Next time you find yourself writing repeated setup and teardown code in Jasmine, consider reusing `beforeEach` and `afterEach` through reusable functions to streamline your testing process. Happy testing!

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