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[#1108] Resolved relative backend roots and a bare 'drush' at container build for the lazy backends. - #1112

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feature/1108-lazy-drush-root
Oct 23, 2026
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AlexSkrypnyk merged 4 commits into
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feature/1108-lazy-drush-root

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@AlexSkrypnyk AlexSkrypnyk commented Oct 23, 2026 •

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Closes #1108

Summary

DrupalBackendProvider now resolves drupal.drupal_root and drush.root to their real paths at container build, through the new resolveDirectoryPath(), while the working directory is still the one Behat runs in. resolveBinaryPath() resolves a bare drush to the project's Drush at the same point, checking COMPOSER_BIN_DIR and then vendor/bin/drush.

Since the drupal and drush backend services became lazy, a backend's constructor runs the first time a scenario uses it. Core::bootstrap() changes the working directory to the Drupal root, so when a scenario used drupal before drush, the Drush constructor resolved a relative root: web from inside the Drupal root. That pointed at web/web and threw No Drupal installation found at web. A bare drush binary had the same problem, because the constructor probed vendor/bin/drush in whatever directory was current. The repository's own behat.php sets root: web, and CI passed only because its scenarios happened to build the Drush backend first.

After merge, a relative drush.root, a relative drupal.drupal_root and a bare drush resolve against the directory Behat runs in, whichever backend a run uses first. That's the behavior the configuration reference already describes. An absolute path keeps its platform's form, a root that doesn't exist reaches the backend as configured and fails with the same message as before, and a vendor/bin/drush path that resolveBinaryPath() already made absolute is unchanged.

Before / After

BEFORE (cwd = /project)
  container build      drush.root = "web"
  scenario 1           drupal backend -> Core::bootstrap() -> chdir(/project/web)
  scenario 2           drush backend built lazily -> realpath("web")
                         -> /project/web/web   ✗ No Drupal installation found at web.

AFTER (cwd = /project)
  container build      drush.root = realpath("web") = "/project/web"
  scenario 1           drupal backend -> Core::bootstrap() -> chdir(/project/web)
  scenario 2           drush backend built lazily -> realpath("/project/web")   ✓

Changes

Path resolution

  • DrupalBackendProvider::resolveDirectoryPath() returns the real path of a directory, resolving a relative one against the working directory. A directory that doesn't exist is returned as configured, so the backend rejects it with its own message. realpath() keeps an absolute path in its platform's form, so a Windows drive path such as C:\project\web isn't joined to the working directory. loadDrupal() and loadDrush() pass drupal_root and root through it.
  • DrupalBackendProvider::resolveBinaryPath() resolves a bare drush through COMPOSER_BIN_DIR, then vendor/bin/drush in the working directory. It falls back to drush for the PATH. A relative COMPOSER_BIN_DIR is resolved too, since Composer allows one. Any other bare command is still returned as-is.
  • The drush.root option description now says a relative path resolves against the directory Behat runs in, matching drupal_root. docs/content/guides/configuration-reference.md is regenerated from it.

Tests

  • DrupalBackendProviderTest:
    • A regression test reproduces the original failure. It builds the lazy Drush backend from a project directory with root: web, changes into web as the bootstrap does, then uses the backend and checks its root.
    • A data provider covers resolveDirectoryPath() with a relative, a dot-segment, an absolute, a missing and a Windows drive directory.
    • New cases cover a bare drush found in the project, a bare drush found through an absolute or a relative COMPOSER_BIN_DIR, and a bare command left to the PATH.
    • setUp() and tearDown() save and restore COMPOSER_BIN_DIR for those cases.
    • The load tests build a fixture project and expect its real web path, so they don't depend on the directory the suite runs in.
  • BehatStepsExtensionTest checks that the roots reach the container through resolveDirectoryPath().

@AlexSkrypnyk AlexSkrypnyk added this to the 4.0 milestone Oct 23, 2026
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📒 Files selected for processing: 3
  • src/Extension/Drupal/ServiceContainer/DrupalBackendProvider.php
  • tests/phpunit/src/Unit/Extension/Drupal/ServiceContainer/DrupalBackendProviderTest.php
  • tests/phpunit/src/Unit/Extension/ServiceContainer/BehatStepsExtensionTest.php

Walkthrough

Drupal and Drush root paths now resolve relative to Behat’s working directory. Bare drush commands check Composer and project binary locations before falling back to PATH. Tests cover root resolution, binary lookup, and lazy backend use.

Changes

Backend Path Resolution

Layer / File(s) Summary
Path resolution helpers
src/Extension/Drupal/ServiceContainer/DrupalBackendProvider.php, tests/phpunit/src/Unit/Extension/Drupal/ServiceContainer/DrupalBackendProviderTest.php
Relative directory paths resolve against the current working directory. Bare drush checks COMPOSER_BIN_DIR/drush, then vendor/bin/drush, and falls back to drush; other bare commands remain unchanged. Tests cover binary and directory resolution.
Backend root configuration
src/Extension/Drupal/ServiceContainer/DrupalBackendProvider.php, docs/content/guides/configuration-reference.md, tests/phpunit/src/Unit/Extension/Drupal/ServiceContainer/DrupalBackendProviderTest.php, tests/phpunit/src/Unit/Extension/ServiceContainer/BehatStepsExtensionTest.php
Drupal drupal_root and configured Drush root resolve against the working directory. An unset Drush root remains NULL. Documentation and tests reflect the relative-path behavior, including lazy backend use after a working-directory change.

Priority: ➖ Normal

Estimated code review effort: 2 (Simple) | ~12 minutes

Change: Bug fix

Possibly related PRs

  • drevops/behat-steps#1110: It makes the Drupal and Drush backends lazy, which this PR’s tests use when checking root resolution after a working-directory change.
Merge Risk: 🟡 Moderate · up to 1d02b

Configurations using Windows drive-absolute Drupal or Drush roots can resolve to the wrong directory. Fix path recognition before merging unless that platform limitation is explicitly accepted.

Pre-merge checks: Passed 4 · Failed 1

Failed Failed checks: 1 warning

Check name Status Explanation Resolution
Docstring Coverage Warning Docstring coverage is 30.43% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 23 functions across 3 files. (1 skipped: … Write docstrings for the functions missing them to satisfy the coverage threshold.
Passed Passed checks: 4 passed
Check name Status Explanation
Description Check Passed Check skipped - CodeRabbit’s high-level summary is enabled.
Title check Passed The title names the two concrete changes in the changeset: resolving relative backend roots (drupal_root and drush root) and resolving a bare 'drush' at container build for the lazy backends. Both mat…
Linked Issues check Passed Issue #1108 is closed and supplies historical context only. No active directly linked issue remains, so this pull request has no linked-issue coding requirements under this assessment.
Out of Scope Changes check Passed No active directly linked issue defines scope for this pull request. The documented path-resolution, Drush lookup, documentation, and test changes are internally consistent with the current pull reque…
Full details: Title check

Explanation

The title names the two concrete changes in the changeset: resolving relative backend roots (drupal_root and drush root) and resolving a bare 'drush' at container build for the lazy backends. Both match the file summaries. The title does not state that the PR closes #1108 in a way that matches the objectives, since the linked issue concerns bootstrap-directory field handlers, but the title's wording is about the code changes, not the issue text, so it is not misleading about the changeset. The title is long (100 characters, 16 words) and uses a bracketed issue prefix, but it is specific and descriptive.

Full details: Out of Scope Changes check

Explanation

No active directly linked issue defines scope for this pull request. The documented path-resolution, Drush lookup, documentation, and test changes are internally consistent with the current pull request intent. The closed issue's unrelated field-handler proposal does not create an out-of-scope requirement.

Full details: Docstring Coverage

Explanation

Docstring coverage is 30.43% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 23 functions across 3 files. (1 skipped: 1 unsupported.)

Resolution

Write docstrings for the functions missing them to satisfy the coverage threshold.

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A rabbit checks the path at dawn,
Then finds where Drush is stashed away.
Relative roots grow clear and long,
While absolute paths keep their place.
The working directory guides the way,
And tests hop through each case.

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Actionable comments posted: 1


  • 🪄 Fix comments: Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at
@src/Extension/Drupal/ServiceContainer/DrupalBackendProvider.php:
- Line 192: Update resolveDirectoryPath() to recognize drive-prefixed paths
followed by a slash or backslash as absolute, while preserving the existing
behavior for Unix absolute paths and relative paths. Do not treat drive-prefixed
paths as absolute on Linux or macOS, where they remain relative names.

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📒 Files selected for processing: 4
  • docs/content/guides/configuration-reference.md
  • src/Extension/Drupal/ServiceContainer/DrupalBackendProvider.php
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Comment thread src/Extension/Drupal/ServiceContainer/DrupalBackendProvider.php Outdated
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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.24%. Comparing base (44d38b1) to head (0b85a98).

Additional details and impacted files
@@           Coverage Diff           @@
##             main    #1112   +/-   ##
=======================================
  Coverage   99.23%   99.24%           
=======================================
  Files         180      180           
  Lines        9605     9612    +7     
=======================================
+ Hits         9532     9539    +7     
  Misses         73       73           

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…n absolute path in any platform's form is kept.
@AlexSkrypnyk AlexSkrypnyk added the Needs review Pull request needs a review from assigned developers label Oct 23, 2026
@AlexSkrypnyk
AlexSkrypnyk merged commit 837f6e2 into main Oct 23, 2026
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AlexSkrypnyk deleted the feature/1108-lazy-drush-root branch October 23, 2026 10:33
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Field handlers in the bootstrap directory fail to register through 'drupal.field_handlers'

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