Updates TC-DD-1.1 for script test steps clarification

[raul-marquez-csa]

Addresses:
[TC-DD-1.1] Add detailed instructions and verification criteria in TC-DD-1.1 script #711

This is the current test plan for TC-DD-1.1
https://github.com/CHIP-Specifications/chip-test-plans/blob/master/src/devicediscovery.adoc#311-tc-dd-11-qr-code-onboarding-payload-verification-dut---commissionee

General updates:

• Added "Verifying xxxx xxx..." logging to script steps
• The expectations for each step were added to the test steps
• Added clarifying comments
• Implemented missing step 3 verification

Additional updates:

• Updated the test description as per the latest test plan
• Updated steps as per the latest test plan
• Added _base38_decode and payload_padding_check functions to onboarding_script_support.py

[gemini-code-assist]

Summary of Changes

Hello @raul-marquez-csa, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request focuses on updating and clarifying the TC-DD-1.1 test script, which is responsible for verifying QR code onboarding payloads. The primary goal is to align the script with the most recent test plan specifications, ensuring that it provides more detailed instructions, explicit verification criteria, and improved logging. These changes collectively aim to create a more robust, transparent, and up-to-date testing process for Matter device onboarding.

Highlights

• Test Script Description Update: The test script description for TC-DD-1.1 has been updated to refer to the 'Matter network' instead of the 'CHIP network', reflecting the latest branding.
• Detailed Test Steps and Verification Criteria: The create_test_steps method has been significantly revised to include detailed verification criteria and expectations directly within each test step description, making the test plan clearer and more comprehensive.
• Enhanced Logging and Execution Flow: New logger.info messages have been added before each verification check in the execute method, providing better visibility into the script's progress. The order of checks has also been adjusted to align with the updated test steps.
• New Verification Checks: New verification steps have been introduced for the Custom Flow bit and 8-bit Discovery Capabilities bit mask. A placeholder for verifying the packed binary data structure has also been added, though it is currently marked as a TODO.

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[gemini-code-assist]

Code Review

This pull request updates the TC-DD-1.1 test script to align with the latest test plan by adding more detailed instructions and logging. While the changes are a good improvement in terms of clarity and alignment with the test plan, I've found a critical syntax error in one of the new test step definitions and a high-severity logic error in how the test steps are advanced, which would cause incorrect test execution and reporting. Please address these issues.

[raul-marquez-csa]

Other than adding the clarifying logging, I found a mismatch between the script and test plan.

In the TC-DD-1.1 test plan

there's an extra step at the end, step 3.

Step3  |  Verify the packed binary data structure  |  Verify the packed binary data structure is padded with '0' bits at the end of the structure to the nearest byte boundary.

This step isn't currently implemented in the script. Please advise if this step is to be implemented in the script, or if it's to be removed from the test plan.

[Ashwinigrl]

Other than adding the clarifying logging, I found a mismatch between the script and test plan.

In the TC-DD-1.1 test plan

there's an extra step at the end, step 3.

Step3  |  Verify the packed binary data structure  |  Verify the packed binary data structure is padded with '0' bits at the end of the structure to the nearest byte boundary.

This step isn't currently implemented in the script. Please advise if this step is to be implemented in the script, or if it's to be removed from the test plan.

Hi @raul-marquez-csa, Packed Binary Data Structure is available in Spec hence it related test step for verifying this has to be added in script.

Spec Reference:

@cecille Could you please help here to how to add this verification in script.

[raul-marquez-csa]

Other than adding the clarifying logging, I found a mismatch between the script and test plan.
In the TC-DD-1.1 test plan
there's an extra step at the end, step 3.

Step3  |  Verify the packed binary data structure  |  Verify the packed binary data structure is padded with '0' bits at the end of the structure to the nearest byte boundary.

This step isn't currently implemented in the script. Please advise if this step is to be implemented in the script, or if it's to be removed from the test plan.

Hi @raul-marquez-csa, Packed Binary Data Structure is available in Spec hence it related test step for verifying this has to be added in script.

Spec Reference:

@cecille Could you please help here to how to add this verification in script.

Ok, implemented step 3 per spec.

[raul-marquez-csa]

/gemini review

[gemini-code-assist]

Code Review

This pull request introduces Matter base38 decoding and a new payload padding verification check. It also refines the TC-DD-1.1 test case with more detailed step descriptions and improved logging. Feedback points out a logic error in the padding check which fails to account for optional TLV data, a misalignment in test step sequencing due to extra next_step() calls, and a formatting issue with multi-line strings in the test metadata.