Create test for TERM_HIERARCHY config Primary tabs View

✅ Tested and works — MR !218.

Environment

• Drupal: 11.4.4
• PHP: 8.5.5
• Database: MariaDB 10.11.16
• DDEV: v1.25.2
• Easy Breadcrumb: 2.x (commit 5bfef4e)

Prerequisites

• Easy Breadcrumb checked out on a clean 2.x branch inside a Drupal 11.4.4 site.
• PHPUnit runnable against the site, e.g.:
  

  ddev exec 'cd web/core && SIMPLETEST_BASE_URL=http://web SIMPLETEST_DB=mysql://db:db@db/db BROWSERTEST_OUTPUT_DIRECTORY=/tmp ../../vendor/bin/phpunit -c phpunit.xml.dist <test-path>'

• Confirm the coverage gap before the fix: grep -rn TERM_HIERARCHY web/modules/contrib/easy_breadcrumb/tests/ returns no matches.

Steps

1. Apply the fix from MR !218: it adds tests/src/Functional/EasyBreadcrumbTermHierarchyTest.php, a functional test that builds a three-level taxonomy hierarchy (Parent → Child → Grandchild), enables Add parent hierarchy, visits the grandchild term page and asserts the three breadcrumb segments in order.
2. Rebuild caches: ddev drush cr
3. Run the new test and confirm it passes.
4. Mutation check: temporarily replace the TERM_HIERARCHY condition in src/EasyBreadcrumbBuilder.php (line 676) with FALSE so parents are never added, and run the test again.
5. Revert src/EasyBreadcrumbBuilder.php and run the test a final time.

Expected results

• The new test passes on unmodified 2.x.
• With the parent-hierarchy branch disabled the test fails, proving it genuinely covers the setting rather than passing vacuously.
• After reverting, the test passes again.

Actual results

Before the fix no test referenced TERM_HIERARCHY, so the "Add parent hierarchy" setting was completely uncovered. After applying MR !218 the new test ran green (1 test, 4 assertions; only pre-existing unrelated deprecation notices). With the condition forced to FALSE it failed with Behat\Mink\Exception\ElementHtmlException: The string "Parent" was not found in the HTML of the element matching css "#block-breadcrumb li:nth-child(2)", confirming the assertions are meaningful; asserting all three segments by position also pins the parent order rather than just their presence. Reverting the builder restored a green run. phpcs --standard=Drupal,DrupalPractice reports no issues on the test file.

Testing produced with the assistance of an LLM.

Welcome @loopduplicate :)