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Activity › Forums › Salesforce® Discussions › What are some best practices while writing test classes in Salesforce?

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  • Shuvam

    Member
    May 31, 2023 at 3:26 AM

    When writing test classes in Salesforce, a few best practices can ensure your code is efficient and maintainable. Here are my top five:

    1. Aim for 100% Coverage: Salesforce requires a minimum of 75% test coverage, but aiming for 100% means you're thoroughly checking your code. This helps avoid those pesky future bugs!
    2. Test Data Independence: Always create your own test data. Use @testSetup annotation to create test records. Remember, Salesforce's 'seeAllData' attribute should ideally be 'false' to prevent access to real org data.
    3. Bulkify Your Code: Test for bulk operations to ensure your code can handle multiple records at once. This is a big one - Salesforce is all about managing large amounts of data.
    4. Test for Various Scenarios: Consider positive, negative, and edge cases. It's not just about when things go right, but also when they go wrong or barely pass.
    5. Avoid Hardcoding IDs: Hardcoded IDs may change between environments which can cause your tests to fail. Better to dynamically identify record types or any other type-based criteria.
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  • Nichol

    Member
    June 30, 2023 at 2:39 PM

    Thanks for the links.

  • Esther

    Member
    July 12, 2023 at 12:57 PM

    I appreciate you for sharing those tips with us.

  • 360degreecloud Salesforce

    Member
    October 21, 2023 at 6:49 AM

    When writing test classes in Salesforce, adhere to best practices for effective testing. Keep test classes separate from production code, covering at least 75% of code, including error scenarios. Use meaningful names for test methods, and create data within the test class to avoid relying on existing data. Minimize dependencies on external resources and use @testSetup for data creation whenever possible. Ensure assertions to validate expected outcomes. Follow the Arrange, Act, Assert (AAA) pattern for test methods. Document your test classes and methods for clarity. Finally, run tests regularly, especially before deployments, to maintain code quality and reliability. Visit this website

  • Landen

    Member
    December 8, 2023 at 8:34 PM

    When crafting Salesforce test classes, prioritize achieving at least 75% code coverage, isolate test data to prevent dependencies, and avoid using `SeeAllData=true`. Emphasize bulk data scenarios, incorporate meaningful assertions, and test exceptions. Regularly review and adapt your tests to evolving code for reliable and effective test coverage.

  • FEXLE Services

    Member
    March 18, 2024 at 12:55 PM

    Focus on Functionality, Not Just Coverage:

  • Aim for high code coverage (ideally above
    90%), but prioritize testing all functionalities of your code. Don't
    just write tests to meet a coverage target.

    • Test Different Scenarios:

  • Include positive and negative test cases. Test expected behavior and edge cases to ensure your code is robust.
  • Use `@isTest` annotation to mark your test class.

    • Organize Your Tests:

  • Use separate test methods for different functionalities or scenarios. This improves readability and maintainability.
  • Consider using `@TestSetup` to create reusable test data setup logic.

    • Leverage Assertions:

  • Utilize methods like `System.assertEquals` and `System.assertNotEquals` to verify expected outcomes.

    • Test Bulk Operations:

  • Test how your code behaves when processing large amounts of data (e.g., 20 or more records).

    • Mock External Interactions:

  • Use tools like `WebServiceMock` to simulate external calls (e.g., web service calls) during testing for reliable results.

    • Test Security Aspects:

  • Avoid using `System.runAs` for user context changes as it bypasses security checks.
  • Test permission-dependent functionalities with appropriate user settings.

    • Additional Tips:

  • Use clear and concise variable names for better understanding.
  • Document your test cases to explain their purpose and expected behavior.
  • Consider using a testing framework like Salesforce DX for enhanced testing capabilities.

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