uuid: - value: daaf3365-9511-4f12-a744-2a8c37a655b9 langcode: - value: en type: - target_id: daily_email target_type: node_type target_uuid: 8bde1f2f-eef9-4f2d-ae9c-96921f8193d7 revision_timestamp: - value: '2025-05-11T09:00:51+00:00' revision_uid: - target_type: user target_uuid: b8966985-d4b2-42a7-a319-2e94ccfbb849 revision_log: { } status: - value: true uid: - target_type: user target_uuid: b8966985-d4b2-42a7-a319-2e94ccfbb849 title: - value: | Camel-case or snake-case for test methods? created: - value: '2022-11-14T00:00:00+00:00' changed: - value: '2025-05-11T09:00:51+00:00' promote: - value: false sticky: - value: false default_langcode: - value: true revision_translation_affected: - value: true path: - alias: /daily/2022/11/14/camel-case-or-snake-case-for-test-methods langcode: en body: - value: |

When writing object-orientated code, particularly in PHP, you usually write method names using camel-case letters - such as:

public function doSomething(): void {
        // ...
      }
      

This is also true when writing methods within a test class - only that the method name is prefixed with the word test:

public function testSomething(): void {
      }
      

This is probably expected and complies with the PSR code style standards like PSR-12.

Something that I've seen some PHP developers and some frameworks prefer is to write their test methods using snake-case letters and commonly removing the test prefix in favour of using an annotation:

/** @test */
      public function the_api_should_return_a_200_response_code_if_everything_is_ok(): void {
        // ...
      }
      

This is something that I've done myself for a while, but now I'm starting to reconsider both options.

Whilst it's more readable, especially for longer test names (which I like to write), it's not consistent with method names in non-test files or non-test methods in test files; it looks odd if I need to add another annotation (do I keep a single annotation on one line, or just those with multiple annotations on the separate lines), and to do this, I need to disable some code sniffer rules for code to pass the PHPCS checks.

If I used camel-cased names, I wouldn't need the PHPCS overrides, the annotations would be simpler, and the code would be more consistent - so I think I'll try that way again in the next tests that I write and see how it feels.

Which do you prefer, and which would you expect to see in your project?

format: full_html processed: |

When writing object-orientated code, particularly in PHP, you usually write method names using camel-case letters - such as:

public function doSomething(): void {
        // ...
      }
      

This is also true when writing methods within a test class - only that the method name is prefixed with the word test:

public function testSomething(): void {
      }
      

This is probably expected and complies with the PSR code style standards like PSR-12.

Something that I've seen some PHP developers and some frameworks prefer is to write their test methods using snake-case letters and commonly removing the test prefix in favour of using an annotation:

/** @test */
      public function the_api_should_return_a_200_response_code_if_everything_is_ok(): void {
        // ...
      }
      

This is something that I've done myself for a while, but now I'm starting to reconsider both options.

Whilst it's more readable, especially for longer test names (which I like to write), it's not consistent with method names in non-test files or non-test methods in test files; it looks odd if I need to add another annotation (do I keep a single annotation on one line, or just those with multiple annotations on the separate lines), and to do this, I need to disable some code sniffer rules for code to pass the PHPCS checks.

If I used camel-cased names, I wouldn't need the PHPCS overrides, the annotations would be simpler, and the code would be more consistent - so I think I'll try that way again in the next tests that I write and see how it feels.

Which do you prefer, and which would you expect to see in your project?

summary: null field_daily_email_cta: { }