Update WooPosItems Tests - default to happy path

[malinajirka]

@coderabbitai review

do not merge label - this PR is dependant on #13724 which needs to be merged first. Feel free to remove the label and merge the PR when the parent PR gets merged.

Description

This PR doesn't introduce any changes, it only refactors unit tests of WooPosItemsViewModel. I noticed the tests are quite repetitive and more importantly, the given section setups items that are not related to the code path the code is testing. This makes tests a bit tricky to read and adds friction when introducing new tests. I've refactored the code so the happy path (items successfully loaded) is the default setup, while allowing each test to modify this behavior only when needed (only when it affects the code path the test is verifying).

cc @kidinov @samiuelson @ThomazFB In case you'd disagree with this approach of setting up tests in a way that the default setup is the happy path.

Testing information

CI run is enough

The tests that have been performed

• I have considered if this change warrants release notes and have added them to RELEASE-NOTES.txt if necessary. Use the "[Internal]" label for non-user-facing changes.

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[wpmobilebot]

📲 You can test the changes from this Pull Request in WooCommerce-Wear Android by scanning the QR code below to install the corresponding build.

	App Name	WooCommerce-Wear Android
	Platform	⌚️ Wear OS
	Flavor	Jalapeno
	Build Type	Debug
	Commit	ba6a0d6
	Direct Download	woocommerce-wear-prototype-build-pr13728-ba6a0d6.apk

[wpmobilebot]

📲 You can test the changes from this Pull Request in WooCommerce Android by scanning the QR code below to install the corresponding build.

	App Name	WooCommerce Android
	Platform	📱 Mobile
	Flavor	Jalapeno
	Build Type	Debug
	Commit	ba6a0d6
	Direct Download	woocommerce-prototype-build-pr13728-ba6a0d6.apk

[malinajirka]

@coderabbitai review

[malinajirka]

@coderabbitai review

[coderabbitai]

📝 Walkthrough

Walkthrough

The pull request updates the WooPosItemsViewModel test file. Changes include adding a step in the setup to initialize a list of products using a product test utility, which is then used to mock the product data source behavior. Test comments and method names have been updated to clarify the different test phases (e.g., renaming “given loading products is failure” to “given loading products fails”) and redundant product generation code has been removed. These adjustments streamline the test structure and improve readability without affecting the underlying test logic.

Changes

File Path	Change Summary
WooCommerce/.../ui/woopos/home/items/WooPosItemsViewModelTest.kt	- Added product initialization using ProductTestUtils.generateProduct in the setup method. - Updated test comments from "GIVEN" to "WHEN"/"THEN". - Renamed test method from “given loading products is failure” to “given loading products fails”. - Removed redundant product generation code.

Sequence Diagram(s)

sequenceDiagram
    participant TR as Test Runner
    participant VM as WooPosItemsViewModel
    participant DS as ProductsDataSource
    participant PT as ProductTestUtils

    TR->>VM: Initialize Test Environment
    VM->>PT: Generate product list
    PT-->>VM: Return product list
    VM->>DS: Call loadSimpleProducts()
    DS-->>VM: Return simulated error
    VM-->>TR: Emit error state

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📥 Commits

Reviewing files that changed from the base of the PR and between b5ec003 and 3550026.

📒 Files selected for processing (1)

• WooCommerce/src/test/kotlin/com/woocommerce/android/ui/woopos/home/items/WooPosItemsViewModelTest.kt (21 hunks)

🔇 Additional comments (6)

WooCommerce/src/test/kotlin/com/woocommerce/android/ui/woopos/home/items/WooPosItemsViewModelTest.kt (6)

53-70: Great addition of default "happy path" setup!

This change establishes a standard "happy path" configuration where products load successfully, reducing repetitive setup code across individual tests. This implementation aligns perfectly with the PR objective of improving test readability and maintainability.

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75-76: Improved test structure with clear phase separation.

Restructuring the comments to clearly delineate between "WHEN" and "THEN" sections follows BDD (Behavior-Driven Development) best practices and makes the test flow easier to follow.

Also applies to: 101-102

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141-141: Better grammatical structure in test name.

Renaming from "given loading products is failure" to "given loading products fails" improves readability while maintaining the same test intent.

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167-168: Consistent test phase structure throughout the file.

The consistent application of clear "WHEN" and "THEN" phase comments throughout all tests creates a uniform reading experience and makes it easier to understand the purpose of each code section.

Also applies to: 183-184, 199-200, 219-222, 259-260, 303-304, 316-319, 399-400, 415-416, 433-434, 450-451, 509-510, 524-524

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194-195: Simplified test by removing redundant setup.

Removing the complex product setup in favor of using a simple object definition makes the test more focused on what it's specifically testing (event sending) rather than product data structure.

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270-271: Reduced test complexity by leveraging default setup.

These changes eliminate redundant setup code by relying on the default "happy path" configuration established in the setup method, making the tests more concise and focused on their specific scenarios.

Also applies to: 292-293, 315-317, 329-330, 361-362, 464-465, 480-481

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[AnirudhBhat]

Thanks for working on this. The code changes looks good to me