Add error handling and tests for ShippingPartnerSuggestions

[ilyasfoo]

Changes proposed in this Pull Request:

Partially closes #44248.

How to test the changes in this Pull Request:

Test shipping task

1. In a fresh store, go through onboarding, select United Kingdom country in onboarding wizard
2. In homescreen, click on Add shipping costs task
3. Fill in the form with whatever and continue in step 1 and 2
4. In step 3, observe ShipStation and sendcloud is shown

Testing transient when specs are valid

1. Open console with access to wp-cli
2. Run wp transient get timeout_woocommerce_admin_shipping_partner_suggestions_specs
3. Confirm it returns a timestamp that is about 7 days from now

Testing transient when specs are invalid

2. Manually replace ShippingPartnerSuggestionsDataSourcePoller.php with https://api.npoint.io/dedddcb56c3642d967f9
3. Run wp transient delete woocommerce_admin_shipping_partner_suggestions_specs
4. Run wp transient delete timeout_woocommerce_admin_shipping_partner_suggestions_specs
5. Run wp option delete woocommerce_admin_created_default_shipping_zones
6. Run wp option delete woocommerce_admin_reviewed_default_shipping_zones
7. Go to WooCommerce > Settings > Shipping and delete all shipping zones.
8. Go to homescreen, click on Add shipping costs task
9. Run wp transient get timeout_woocommerce_admin_shipping_partner_suggestions_specs
10. Confirm it returns a timestamp that is about 3 hours from now

Changelog entry

• Automatically create a changelog entry from the details below.

Significance

• Patch
• Minor
• Major

Type

• Fix - Fixes an existing bug
• Add - Adds functionality
• Update - Update existing functionality
• Dev - Development related task
• Tweak - A minor adjustment to the codebase
• Performance - Address performance issues
• Enhancement - Improvement to existing functionality

Message

Comment

[github-actions]

Hi @chihsuan, @moon0326, @woocommerce/ghidorah

Apart from reviewing the code changes, please make sure to review the testing instructions as well.

You can follow this guide to find out what good testing instructions should look like:
https://github.com/woocommerce/woocommerce/wiki/Writing-high-quality-testing-instructions

[github-actions]

Test Results Summary

Commit SHA: 593364e

Test 🧪	Passed ✅	Failed 🚨	Broken 🚧	Skipped ⏭️	Unknown ❔	Total 📊	Duration ⏱️
API Tests	259	0	0	2	0	261	0m 37s
E2E Tests	318	0	0	7	0	325	7m 16s

---

To view the full API test report, click here.
To view the full E2E test report, click here.
To view all test reports, visit the WooCommerce Test Reports Dashboard.

[moon0326]

LGTM and tested well 👍 🚀

[chihsuan]

Thanks, looks good and tested well! 👍