fix(PrismicLink): do not warn about missing field properties if the Link field is empty

[angeloashmore]

Types of changes

• Chore (a non-breaking change which is related to package maintenance)
• Bug fix (a non-breaking change which fixes an issue)
• New feature (a non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Description

This PR fixes a bug in <PrismicLink> where it logged a console warning about missing Link field properties when given an empty Link field value. Empty link values are valid and should not trigger the warning.

The issue was unknown because the test to check this exact case was written incorrectly (see the fix).

Fixes #161

Thanks to @ReeceM for uncovering the issue!

Checklist:

• My change requires an update to the official documentation.
• All TSDoc comments are up-to-date and new ones have been added where necessary.
• All new and existing tests are passing.

🐈

[codecov-commenter]

Codecov Report

Merging #163 (6db944e) into master (5be1649) will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #163      +/-   ##
==========================================
+ Coverage   91.61%   91.64%   +0.02%     
==========================================
  Files          18       18              
  Lines         334      335       +1     
  Branches       84       85       +1     
==========================================
+ Hits          306      307       +1     
  Misses          5        5              
  Partials       23       23              

Impacted Files	Coverage Δ
src/PrismicLink.tsx	94.11% <100.00%> (+0.11%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 5be1649...6db944e. Read the comment docs.

[github-actions]

size-limit report 📦

Path	Size
dist/index.js	5.66 KB (+0.16% 🔺)
dist/index.cjs	7.19 KB (+0.13% 🔺)