[FEATURE] Add check for PSR-4 namespace correctness (#740)

.github/workflows/ci.yml

@@ -66,6 +66,7 @@ jobs:
       matrix:
         command:
           - "composer:normalize"
+          - "composer:psr-verify"
           - "json:lint"
           - "php:copypaste"
           - "php:cs-fixer"

.gitlab/pipeline/.gitlab-ci.yml

@@ -12,6 +12,7 @@ include:
   - '/.gitlab/pipeline/jobs/.variables.yml'
   - '/.gitlab/pipeline/jobs/build-composer-dependencies.yml'
   - '/.gitlab/pipeline/jobs/composer-normalize.yml'
+  - '/.gitlab/pipeline/jobs/composer-psr-verify.yml'
   - '/.gitlab/pipeline/jobs/func-php7.4-v11-highest.yml'
   - '/.gitlab/pipeline/jobs/func-php7.4-v11-lowest.yml'
   - '/.gitlab/pipeline/jobs/func-php8.0-v11-highest.yml'

.gitlab/pipeline/jobs/composer-psr-verify.yml

@@ -0,0 +1,5 @@
+composer-psr-verify:
+  extends: .default
+  stage: codestyle
+  script:
+    - composer ci:composer:psr-verify

composer.json

@@ -103,6 +103,7 @@
 			"@ci:static"
 		],
 		"ci:composer:normalize": "@composer normalize --no-check-lock --dry-run",
+		"ci:composer:psr-verify": "@composer dumpautoload --optimize --strict-psr",
 		"ci:coverage": [
 			"@ci:coverage:unit",
 			"@ci:coverage:functional"
@@ -194,6 +195,7 @@
 	"scripts-descriptions": {
 		"ci": "Runs all dynamic and static code checks.",
 		"ci:composer:normalize": "Checks the composer.json.",
+		"ci:composer:psr-verify": "Verifies PSR-4 namespace correctness.",
 		"ci:coverage:functional": "Generates the code coverage report for functional tests.",
 		"ci:coverage:merge": "Merges the code coverage reports for unit and functional tests.",
 		"ci:coverage:unit": "Generates the code coverage report for unit tests.",