Add IBAN validator with QA workflows

.editorconfig

@@ -0,0 +1,262 @@
+# Do not search in parent directories.
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 2
+indent_style = space
+trim_trailing_whitespace = true
+insert_final_newline = true
+max_line_length = 120
+tab_width = 2
+ij_continuation_indent_size = 2
+ij_visual_guides = 80,120
+
+[composer.{json,lock}]
+indent_size = 4
+
+[{*.php}]
+ij_php_align_assignments = false
+ij_php_align_class_constants = false
+ij_php_align_enum_cases = false
+ij_php_align_group_field_declarations = false
+ij_php_align_inline_comments = false
+ij_php_align_key_value_pairs = false
+ij_php_align_match_arm_bodies = false
+ij_php_align_multiline_array_initializer_expression = false
+ij_php_align_multiline_binary_operation = false
+ij_php_align_multiline_chained_methods = false
+ij_php_align_multiline_extends_list = false
+ij_php_align_multiline_for = true
+ij_php_align_multiline_parameters = false
+ij_php_align_multiline_parameters_in_calls = false
+ij_php_align_multiline_ternary_operation = false
+ij_php_align_named_arguments = false
+ij_php_align_phpdoc_comments = false
+ij_php_align_phpdoc_param_names = false
+ij_php_anonymous_brace_style = end_of_line
+ij_php_api_weight = 28
+ij_php_array_initializer_new_line_after_left_brace = true
+ij_php_array_initializer_right_brace_on_new_line = true
+ij_php_array_initializer_wrap = on_every_item
+ij_php_assignment_wrap = normal
+ij_php_attributes_wrap = normal
+ij_php_author_weight = 28
+ij_php_binary_operation_sign_on_next_line = false
+ij_php_binary_operation_wrap = normal
+ij_php_blank_lines_after_class_header = 1
+ij_php_blank_lines_after_function = 1
+ij_php_blank_lines_after_imports = 1
+ij_php_blank_lines_after_opening_tag = 0
+ij_php_blank_lines_after_package = 1
+ij_php_blank_lines_around_class = 1
+ij_php_blank_lines_around_constants = 1
+ij_php_blank_lines_around_enum_cases = 0
+ij_php_blank_lines_around_field = 1
+ij_php_blank_lines_around_method = 1
+ij_php_blank_lines_before_class_end = 1
+ij_php_blank_lines_before_imports = 1
+ij_php_blank_lines_before_method_body = 0
+ij_php_blank_lines_before_package = 1
+ij_php_blank_lines_before_return_statement = 1
+ij_php_blank_lines_between_imports = 0
+ij_php_block_brace_style = end_of_line
+ij_php_call_parameters_new_line_after_left_paren = true
+ij_php_call_parameters_right_paren_on_new_line = true
+ij_php_call_parameters_wrap = on_every_item
+ij_php_catch_on_new_line = true
+ij_php_category_weight = 28
+ij_php_class_brace_style = end_of_line
+ij_php_comma_after_last_argument = false
+ij_php_comma_after_last_array_element = true
+ij_php_comma_after_last_closure_use_var = false
+ij_php_comma_after_last_match_arm = false
+ij_php_comma_after_last_parameter = false
+ij_php_concat_spaces = true
+ij_php_copyright_weight = 28
+ij_php_deprecated_weight = 4
+ij_php_do_while_brace_force = always
+ij_php_else_if_style = as_is
+ij_php_else_on_new_line = true
+ij_php_example_weight = 28
+ij_php_extends_keyword_wrap = off
+ij_php_extends_list_wrap = off
+ij_php_fields_default_visibility = private
+ij_php_filesource_weight = 28
+ij_php_finally_on_new_line = true
+ij_php_for_brace_force = always
+ij_php_for_statement_new_line_after_left_paren = false
+ij_php_for_statement_right_paren_on_new_line = false
+ij_php_for_statement_wrap = off
+ij_php_force_empty_methods_in_one_line = false
+ij_php_force_short_declaration_array_style = true
+ij_php_getters_setters_naming_style = camel_case
+ij_php_getters_setters_order_style = getters_first
+ij_php_global_weight = 28
+ij_php_group_use_wrap = on_every_item
+ij_php_if_brace_force = always
+ij_php_if_lparen_on_next_line = false
+ij_php_if_rparen_on_next_line = false
+ij_php_ignore_weight = 28
+ij_php_import_sorting = alphabetic
+ij_php_indent_break_from_case = true
+ij_php_indent_case_from_switch = true
+ij_php_indent_code_in_php_tags = false
+ij_php_internal_weight = 28
+ij_php_keep_blank_lines_after_lbrace = 1
+ij_php_keep_blank_lines_before_right_brace = 1
+ij_php_keep_blank_lines_in_code = 1
+ij_php_keep_blank_lines_in_declarations = 1
+ij_php_keep_control_statement_in_one_line = false
+ij_php_keep_first_column_comment = false
+ij_php_keep_indents_on_empty_lines = false
+ij_php_keep_line_breaks = false
+ij_php_keep_rparen_and_lbrace_on_one_line = true
+ij_php_keep_simple_classes_in_one_line = false
+ij_php_keep_simple_methods_in_one_line = false
+ij_php_lambda_brace_style = end_of_line
+ij_php_license_weight = 28
+ij_php_line_comment_add_space = false
+ij_php_line_comment_at_first_column = true
+ij_php_link_weight = 28
+ij_php_lower_case_boolean_const = false
+ij_php_lower_case_keywords = true
+ij_php_lower_case_null_const = false
+ij_php_method_brace_style = end_of_line
+ij_php_method_call_chain_wrap = on_every_item
+ij_php_method_parameters_new_line_after_left_paren = true
+ij_php_method_parameters_right_paren_on_new_line = true
+ij_php_method_parameters_wrap = on_every_item
+ij_php_method_weight = 28
+ij_php_modifier_list_wrap = false
+ij_php_multiline_chained_calls_semicolon_on_new_line = true
+ij_php_namespace_brace_style = 1
+ij_php_new_line_after_php_opening_tag = true
+ij_php_null_type_position = in_the_end
+ij_php_package_weight = 28
+ij_php_param_weight = 1
+ij_php_parameters_attributes_wrap = normal
+ij_php_parentheses_expression_new_line_after_left_paren = false
+ij_php_parentheses_expression_right_paren_on_new_line = false
+ij_php_phpdoc_blank_line_before_tags = true
+ij_php_phpdoc_blank_lines_around_parameters = true
+ij_php_phpdoc_keep_blank_lines = true
+ij_php_phpdoc_param_spaces_between_name_and_description = 1
+ij_php_phpdoc_param_spaces_between_tag_and_type = 1
+ij_php_phpdoc_param_spaces_between_type_and_name = 1
+ij_php_phpdoc_use_fqcn = true
+ij_php_phpdoc_wrap_long_lines = true
+ij_php_place_assignment_sign_on_next_line = false
+ij_php_place_parens_for_constructor = 1
+ij_php_property_read_weight = 28
+ij_php_property_weight = 28
+ij_php_property_write_weight = 28
+ij_php_return_type_on_new_line = false
+ij_php_return_weight = 2
+ij_php_see_weight = 5
+ij_php_since_weight = 28
+ij_php_sort_phpdoc_elements = true
+ij_php_space_after_colon = true
+ij_php_space_after_colon_in_enum_backed_type = true
+ij_php_space_after_colon_in_named_argument = true
+ij_php_space_after_colon_in_return_type = true
+ij_php_space_after_comma = true
+ij_php_space_after_for_semicolon = true
+ij_php_space_after_quest = true
+ij_php_space_after_type_cast = true
+ij_php_space_after_unary_not = false
+ij_php_space_before_array_initializer_left_brace = false
+ij_php_space_before_catch_keyword = true
+ij_php_space_before_catch_left_brace = true
+ij_php_space_before_catch_parentheses = true
+ij_php_space_before_class_left_brace = true
+ij_php_space_before_closure_left_parenthesis = true
+ij_php_space_before_colon = true
+ij_php_space_before_colon_in_enum_backed_type = false
+ij_php_space_before_colon_in_named_argument = false
+ij_php_space_before_colon_in_return_type = false
+ij_php_space_before_comma = false
+ij_php_space_before_do_left_brace = true
+ij_php_space_before_else_keyword = true
+ij_php_space_before_else_left_brace = true
+ij_php_space_before_finally_keyword = true
+ij_php_space_before_finally_left_brace = true
+ij_php_space_before_for_left_brace = true
+ij_php_space_before_for_parentheses = true
+ij_php_space_before_for_semicolon = false
+ij_php_space_before_if_left_brace = true
+ij_php_space_before_if_parentheses = true
+ij_php_space_before_method_call_parentheses = false
+ij_php_space_before_method_left_brace = true
+ij_php_space_before_method_parentheses = false
+ij_php_space_before_quest = true
+ij_php_space_before_short_closure_left_parenthesis = false
+ij_php_space_before_switch_left_brace = true
+ij_php_space_before_switch_parentheses = true
+ij_php_space_before_try_left_brace = true
+ij_php_space_before_unary_not = false
+ij_php_space_before_while_keyword = true
+ij_php_space_before_while_left_brace = true
+ij_php_space_before_while_parentheses = true
+ij_php_space_between_ternary_quest_and_colon = false
+ij_php_spaces_around_additive_operators = true
+ij_php_spaces_around_arrow = false
+ij_php_spaces_around_assignment_in_declare = true
+ij_php_spaces_around_assignment_operators = true
+ij_php_spaces_around_bitwise_operators = true
+ij_php_spaces_around_equality_operators = true
+ij_php_spaces_around_logical_operators = true
+ij_php_spaces_around_multiplicative_operators = true
+ij_php_spaces_around_null_coalesce_operator = true
+ij_php_spaces_around_pipe_in_union_type = false
+ij_php_spaces_around_relational_operators = true
+ij_php_spaces_around_shift_operators = true
+ij_php_spaces_around_unary_operator = false
+ij_php_spaces_around_var_within_brackets = false
+ij_php_spaces_within_array_initializer_braces = false
+ij_php_spaces_within_brackets = false
+ij_php_spaces_within_catch_parentheses = false
+ij_php_spaces_within_for_parentheses = false
+ij_php_spaces_within_if_parentheses = false
+ij_php_spaces_within_method_call_parentheses = false
+ij_php_spaces_within_method_parentheses = false
+ij_php_spaces_within_parentheses = false
+ij_php_spaces_within_short_echo_tags = true
+ij_php_spaces_within_switch_parentheses = false
+ij_php_spaces_within_while_parentheses = false
+ij_php_special_else_if_treatment = false
+ij_php_subpackage_weight = 28
+ij_php_ternary_operation_signs_on_next_line = true
+ij_php_ternary_operation_wrap = on_every_item
+ij_php_throws_weight = 3
+ij_php_todo_weight = 6
+ij_php_treat_multiline_arrays_and_lambdas_multiline = false
+ij_php_unknown_tag_weight = 28
+ij_php_upper_case_boolean_const = true
+ij_php_upper_case_null_const = true
+ij_php_uses_weight = 28
+ij_php_var_weight = 0
+ij_php_variable_naming_style = camel_case
+ij_php_version_weight = 28
+ij_php_while_brace_force = always
+ij_php_while_on_new_line = false
+
+[{*.neon,*.neon.dist,*neon.template}]
+indent_style = tab
+tab_width = 4
+
+[{*.yaml,*.yml}]
+ij_yaml_align_values_properties = do_not_align
+ij_yaml_autoinsert_sequence_marker = true
+ij_yaml_block_mapping_on_new_line = false
+ij_yaml_indent_sequence_value = true
+ij_yaml_keep_indents_on_empty_lines = false
+ij_yaml_keep_line_breaks = true
+ij_yaml_line_comment_add_space = false
+ij_yaml_line_comment_add_space_on_reformat = false
+ij_yaml_line_comment_at_first_column = false
+ij_yaml_sequence_on_new_line = false
+ij_yaml_space_before_colon = false
+ij_yaml_spaces_within_braces = true
+ij_yaml_spaces_within_brackets = true

.github/workflows/phpcs.yml

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+name: PHP_CodeSniffer
+
+permissions: {}
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+  pull_request:
+    paths:
+      - '**.php'
+      - tools/phpcs/composer.json
+      - phpcs.xml.dist
+      - .github/workflows/phpcs.yml
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  phpcs:
+    runs-on: ubuntu-latest
+    name: PHP_CodeSniffer
+
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@f3e473d116dcccaddc5834248c87452386958240 # 2.37.2
+        with:
+          php-version: 8.5
+          coverage: none
+          tools: cs2pr
+        env:
+          fail-fast: true
+
+      - name: Get composer cache directory
+        id: composer-cache
+        run: echo "dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
+
+      - name: Cache dependencies
+        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
+        with:
+          path: ${{ steps.composer-cache.outputs.dir }}
+          key: ${{ runner.os }}-composer-${{ hashFiles('tools/phpcs/composer.json') }}
+          restore-keys: ${{ runner.os }}-composer-
+
+      - name: Install dependencies
+        run: composer composer-phpcs -- update --no-progress --prefer-dist
+
+      - name: Run PHP_CodeSniffer
+        run: composer phpcs -- -q --report=checkstyle | cs2pr

.github/workflows/phpstan.yml

@@ -0,0 +1,83 @@
+name: PHPStan
+
+permissions: {}
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+  pull_request:
+    paths:
+      - '**.php'
+      - composer.json
+      - tools/phpstan/composer.json
+      - phpstan.neon.dist
+      - .github/workflows/phpstan.yml
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  phpstan:
+    runs-on: ubuntu-latest
+    continue-on-error: ${{ matrix.experimental }}
+    strategy:
+      fail-fast: false
+      matrix:
+        php-versions: ['8.1', '8.5']
+        prefer: ['prefer-stable', 'prefer-lowest']
+        experimental: [false]
+        include:
+          - php-versions: 8.6
+            prefer: prefer-source
+            experimental: true
+    name: PHPStan with PHP ${{ matrix.php-versions }} ${{ matrix.prefer }}
+
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@f3e473d116dcccaddc5834248c87452386958240 # 2.37.2
+        with:
+          php-version: ${{ matrix.php-versions }}
+          coverage: none
+        env:
+          fail-fast: true
+
+      - name: Get composer cache directory
+        id: composer-cache
+        run: echo "dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
+
+      - name: Cache dependencies
+        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
+        with:
+          path: ${{ steps.composer-cache.outputs.dir }}
+          key: ${{ runner.os }}-composer-${{ matrix.prefer }}-${{ hashFiles('**/composer.json') }}
+          restore-keys: ${{ runner.os }}-composer-${{ matrix.prefer }}-
+
+      - name: Install dependencies
+        env:
+          MATRIX_EXPERIMENTAL: ${{ matrix.experimental }}
+          MATRIX_PREFER: ${{ matrix.prefer }}
+        run: |
+          if [ "${MATRIX_PREFER}" = "prefer-lowest" ]; then
+            export COMPOSER_NO_BLOCKING=1
+          fi
+
+          if [ "${MATRIX_EXPERIMENTAL}" == "true" ]; then
+            sed -E -i composer.json \
+              -e 's/"minimum-stability":[^,]*/"minimum-stability": "dev"/' \
+              -e 's/"prefer-stable":[^,]*/"prefer-stable": false/'
+            export COMPOSER_IGNORE_PLATFORM_REQ="php+"
+          fi
+
+          composer update --no-progress --${MATRIX_PREFER} --optimize-autoloader
+          composer composer-phpunit -- update --no-progress --optimize-autoloader
+          composer composer-phpstan -- update --no-progress --optimize-autoloader
+
+      - name: Run PHPStan
+        run: composer phpstan -- analyse

.github/workflows/phpunit.yml

@@ -0,0 +1,93 @@
+name: PHPUnit
+
+permissions: {}
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+  pull_request:
+    paths:
+      - '**.php'
+      - composer.json
+      - tools/phpunit/composer.json
+      - phpunit.xml.dist
+      - .github/workflows/phpunit.yml
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  phpunit:
+    runs-on: ubuntu-latest
+    continue-on-error: ${{ matrix.experimental }}
+    strategy:
+      fail-fast: false
+      matrix:
+        php-versions: ['8.1', '8.5']
+        prefer: ['prefer-stable', 'prefer-lowest']
+        experimental: [false]
+        include:
+          - php-versions: 8.6
+            prefer: prefer-source
+            experimental: true
+    name: PHPUnit with PHP ${{ matrix.php-versions }} ${{ matrix.prefer }}
+
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@f3e473d116dcccaddc5834248c87452386958240 # 2.37.2
+        with:
+          php-version: ${{ matrix.php-versions }}
+          extensions: bcmath, curl, fileinfo, gd, intl, mbstring, mysqli, xml, zip
+          coverage: pcov
+        env:
+          fail-fast: true
+
+      - name: Get composer cache directory
+        id: composer-cache
+        run: echo "dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
+
+      - name: Cache dependencies
+        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
+        with:
+          path: ${{ steps.composer-cache.outputs.dir }}
+          key: ${{ runner.os }}-composer-${{ matrix.prefer }}-${{ hashFiles('**/composer.json') }}
+          restore-keys: ${{ runner.os }}-composer-${{ matrix.prefer }}-
+
+      - name: Install dependencies
+        env:
+          MATRIX_EXPERIMENTAL: ${{ matrix.experimental }}
+          MATRIX_PREFER: ${{ matrix.prefer }}
+        run: |
+          if [ "${MATRIX_PREFER}" = "prefer-lowest" ]; then
+            export COMPOSER_NO_BLOCKING=1
+          fi
+
+          if [ "${MATRIX_EXPERIMENTAL}" == "true" ]; then
+            sed -E -i composer.json \
+              -e 's/"minimum-stability":[^,]*/"minimum-stability": "dev"/' \
+              -e 's/"prefer-stable":[^,]*/"prefer-stable": false/'
+            export COMPOSER_IGNORE_PLATFORM_REQ="php+"
+          fi
+
+          composer update --no-progress --${MATRIX_PREFER} --optimize-autoloader
+          composer composer-phpunit -- update --no-progress --optimize-autoloader
+
+      - name: Setup problem matchers for PHP
+        env:
+          RUNNER_TOOL_CACHE: ${{ runner.tool_cache }}
+        run: echo "::add-matcher::${RUNNER_TOOL_CACHE}/php.json"
+
+      - name: Setup problem matchers for PHPUnit
+        env:
+          RUNNER_TOOL_CACHE: ${{ runner.tool_cache }}
+        run: echo "::add-matcher::${RUNNER_TOOL_CACHE}/phpunit.json"
+
+      - name: Run PHPUnit
+        run: composer phpunit

.github/workflows/smoke.yml

@@ -0,0 +1,54 @@
+name: Smoke
+
+permissions: {}
+
+on:
+  workflow_dispatch:
+    inputs:
+      greeting:
+        description: 'Text passed from the first job to the second'
+        required: false
+        type: string
+        default: hello
+  push:
+    branches:
+      - main
+
+jobs:
+  produce:
+    runs-on: ubuntu-latest
+    name: Produce an output
+    outputs:
+      greeting: ${{ steps.greeting.outputs.value }}
+
+    steps:
+      - name: Show the runner
+        run: |
+          uname -a
+          cat /etc/os-release
+          id
+          echo "event=${GITHUB_EVENT_NAME} ref=${GITHUB_REF} sha=${GITHUB_SHA}"
+          echo "server=${GITHUB_SERVER_URL} repository=${GITHUB_REPOSITORY}"
+          command -v sudo docker node php composer || true
+
+      - name: Set the output
+        id: greeting
+        env:
+          INPUTS_GREETING: ${{ inputs.greeting || 'hello' }}
+        run: echo "value=${INPUTS_GREETING} from ${GITHUB_REPOSITORY}" >> $GITHUB_OUTPUT
+
+      - name: Write the step summary
+        run: echo "### Smoke test ran on ${RUNNER_OS}" >> $GITHUB_STEP_SUMMARY
+
+  consume:
+    runs-on: ubuntu-latest
+    name: Consume the output
+    needs: produce
+
+    steps:
+      - name: Print the output of the first job
+        env:
+          GREETING: ${{ needs.produce.outputs.greeting }}
+        run: |
+          test -n "${GREETING}"
+          echo "${GREETING}"

.gitignore

@@ -0,0 +1,8 @@
+/.phpcs.cache
+/.phpunit.result.cache
+/.phpstan/
+/composer.lock
+/phpstan.neon
+/tools/*/vendor/
+/tools/*/composer.lock
+/vendor/

composer.json

@@ -0,0 +1,64 @@
+{
+    "name": "systopia/pipelinetest",
+    "description": "Test project for GitHub workflows on Gitea Actions",
+    "type": "library",
+    "license": "AGPL-3.0-or-later",
+    "authors": [
+        {
+            "name": "SYSTOPIA GmbH",
+            "email": "info@systopia.de",
+            "homepage": "https://www.systopia.de"
+        }
+    ],
+    "minimum-stability": "dev",
+    "prefer-stable": true,
+    "config": {
+        "sort-packages": true
+    },
+    "require": {
+        "php": "^8.1"
+    },
+    "autoload": {
+        "psr-4": {
+            "Systopia\\PipelineTest\\": "src/"
+        }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "Systopia\\PipelineTest\\": "tests/"
+        }
+    },
+    "scripts": {
+        "composer-phpcs": [
+            "@composer --working-dir=tools/phpcs"
+        ],
+        "composer-phpstan": [
+            "@composer --working-dir=tools/phpstan"
+        ],
+        "composer-phpunit": [
+            "@composer --working-dir=tools/phpunit"
+        ],
+        "composer-tools": [
+            "@composer-phpcs",
+            "@composer-phpstan",
+            "@composer-phpunit"
+        ],
+        "phpcs": [
+            "@php tools/phpcs/vendor/bin/phpcs"
+        ],
+        "phpcbf": [
+            "@php tools/phpcs/vendor/bin/phpcbf"
+        ],
+        "phpstan": [
+            "@php tools/phpstan/vendor/bin/phpstan -v"
+        ],
+        "phpunit": [
+            "@php tools/phpunit/vendor/bin/simple-phpunit --coverage-text"
+        ],
+        "test": [
+            "@phpcs",
+            "@phpstan",
+            "@phpunit"
+        ]
+    }
+}

phpcs.xml.dist

@@ -0,0 +1,78 @@
+<?xml version="1.0"?>
+<ruleset xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" name="CiviCRM - Modified"
+         xsi:noNamespaceSchemaLocation="tools/phpcs/vendor/squizlabs/php_codesniffer/phpcs.xsd">
+    <description>CiviCRM coding standard with some additional changes</description>
+
+    <file>src</file>
+    <file>tests</file>
+
+    <arg name="extensions" value="php"/>
+    <arg name="cache" value=".phpcs.cache"/>
+    <arg name="colors"/>
+    <arg value="sp"/>
+
+    <!-- Exit with code 0 if warnings, but no error occurred -->
+    <config name="ignore_warnings_on_exit" value="true"/>
+
+    <rule ref="tools/phpcs/vendor/drupal/coder/coder_sniffer/Drupal">
+        <!-- Conflicts with PHPStan type hints -->
+        <exclude name="Drupal.Commenting.VariableComment.IncorrectVarType"/>
+        <exclude name="Drupal.Commenting.FunctionComment.ParamTypeSpaces"/>
+        <exclude name="Drupal.Commenting.FunctionComment.ReturnTypeSpaces"/>
+
+        <!-- Don't enforce phpdoc type hint because it (might) only duplicate a PHP type hint -->
+        <exclude name="Drupal.Commenting.VariableComment.MissingVar"/>
+
+        <!-- Don't enforce phpdoc type hint because it (might) only duplicate a PHP type hint -->
+        <exclude name="Drupal.Commenting.FunctionComment.ParamMissingDefinition"/>
+
+        <!-- False positive when license header is set and variable has no comment -->
+        <exclude name="Drupal.Commenting.VariableComment.WrongStyle"/>
+    </rule>
+
+    <rule ref="Generic.Arrays.DisallowLongArraySyntax"/>
+    <rule ref="Generic.CodeAnalysis.EmptyStatement">
+        <exclude name="Generic.CodeAnalysis.EmptyStatement.DetectedCatch"/>
+    </rule>
+    <rule ref="Generic.CodeAnalysis.ForLoopWithTestFunctionCall"/>
+    <rule ref="Generic.Files.OneClassPerFile"/>
+    <rule ref="Generic.Files.OneInterfacePerFile"/>
+    <rule ref="Generic.Files.OneObjectStructurePerFile"/>
+    <rule ref="Generic.Files.OneTraitPerFile"/>
+    <rule ref="Generic.Formatting.DisallowMultipleStatements"/>
+    <rule ref="Generic.Metrics.CyclomaticComplexity"/>
+    <rule ref="Generic.Metrics.NestingLevel"/>
+    <rule ref="Generic.NamingConventions.AbstractClassNamePrefix"/>
+    <rule ref="Generic.NamingConventions.InterfaceNameSuffix"/>
+    <rule ref="Generic.NamingConventions.TraitNameSuffix"/>
+    <rule ref="Generic.PHP.RequireStrictTypes"/>
+    <rule ref="PSR1.Files.SideEffects"/>
+    <rule ref="PSR12.Classes.ClassInstantiation"/>
+    <rule ref="PSR12.Properties.ConstantVisibility"/>
+    <rule ref="Squiz.PHP.CommentedOutCode"/>
+    <rule ref="Squiz.PHP.GlobalKeyword"/>
+    <rule ref="Squiz.Strings.DoubleQuoteUsage">
+        <exclude name="Squiz.Strings.DoubleQuoteUsage.ContainsVar"/>
+    </rule>
+
+    <!-- Lines can be 120 chars long, but never show errors -->
+    <rule ref="Generic.Files.LineLength">
+        <properties>
+            <property name="lineLimit" value="120"/>
+            <property name="absoluteLineLimit" value="0"/>
+        </properties>
+    </rule>
+
+    <!-- Ban some functions -->
+    <rule ref="Generic.PHP.ForbiddenFunctions">
+        <properties>
+            <property name="forbiddenFunctions" type="array">
+                <element key="sizeof" value="count"/>
+                <element key="delete" value="unset"/>
+                <element key="print" value="echo"/>
+                <element key="is_null" value="null"/>
+                <element key="create_function" value="null"/>
+            </property>
+        </properties>
+    </rule>
+</ruleset>

phpstan.neon.dist

@@ -0,0 +1,24 @@
+parameters:
+	paths:
+		- src
+		- tests
+	scanFiles:
+		- tools/phpunit/vendor/bin/.phpunit/phpunit/src/Framework/TestCase.php
+	scanDirectories:
+		- tools/phpunit/vendor/bin/.phpunit/phpunit/src/Framework
+	bootstrapFiles:
+		- tools/phpunit/vendor/bin/.phpunit/phpunit/vendor/autoload.php
+		- vendor/autoload.php
+	level: 9
+	checkTooWideReturnTypesInProtectedAndPublicMethods: true
+	checkUninitializedProperties: true
+	checkMissingCallableSignature: true
+	treatPhpDocTypesAsCertain: false
+	exceptions:
+		check:
+			missingCheckedExceptionInThrows: true
+			tooWideThrowType: true
+		checkedExceptionClasses:
+			- \Webmozart\Assert\InvalidArgumentException
+		implicitThrows: false
+	tmpDir: .phpstan

phpunit.xml.dist

@@ -0,0 +1,27 @@
+<?xml version="1.0"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd"
+         colors="true"
+         failOnRisky="true"
+         failOnWarning="true"
+         forceCoversAnnotation="true"
+         bootstrap="vendor/autoload.php">
+
+  <php>
+    <ini name="error_reporting" value="-1"/>
+    <env name="SYMFONY_DEPRECATIONS_HELPER" value="max[direct]=0"/>
+  </php>
+
+  <testsuites>
+    <testsuite name="pipelinetest Test Suite">
+      <directory>./tests</directory>
+    </testsuite>
+  </testsuites>
+
+  <coverage>
+    <include>
+      <directory suffix=".php">src</directory>
+    </include>
+  </coverage>
+
+</phpunit>

src/IbanValidator.php

@@ -0,0 +1,51 @@
+<?php
+
+declare(strict_types = 1);
+
+namespace Systopia\PipelineTest;
+
+final class IbanValidator {
+
+  private const LENGTHS = [
+    'AT' => 20,
+    'BE' => 16,
+    'CH' => 21,
+    'DE' => 22,
+    'ES' => 24,
+    'FR' => 27,
+    'IT' => 27,
+    'LU' => 20,
+    'NL' => 18,
+  ];
+
+  public function isValid(string $iban): bool {
+    $normalized = $this->normalize($iban);
+
+    if (1 !== preg_match('/^[A-Z]{2}[0-9]{2}[A-Z0-9]+$/', $normalized)) {
+      return FALSE;
+    }
+
+    if (strlen($normalized) !== (self::LENGTHS[substr($normalized, 0, 2)] ?? NULL)) {
+      return FALSE;
+    }
+
+    return 1 === $this->mod97(substr($normalized, 4) . substr($normalized, 0, 4));
+  }
+
+  public function normalize(string $iban): string {
+    return strtoupper(str_replace([' ', '-'], '', $iban));
+  }
+
+  private function mod97(string $rearranged): int {
+    $remainder = 0;
+    foreach (str_split($rearranged) as $character) {
+      $digits = ctype_digit($character) ? $character : (string) (ord($character) - 55);
+      foreach (str_split($digits) as $digit) {
+        $remainder = ($remainder * 10 + (int) $digit) % 97;
+      }
+    }
+
+    return $remainder;
+  }
+
+}

tests/IbanValidatorTest.php

@@ -0,0 +1,58 @@
+<?php
+
+declare(strict_types = 1);
+
+namespace Systopia\PipelineTest;
+
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @covers \Systopia\PipelineTest\IbanValidator
+ */
+final class IbanValidatorTest extends TestCase {
+
+  /**
+   * @dataProvider validIbans
+   */
+  public function testAValidIban(string $iban): void {
+    static::assertTrue((new IbanValidator())->isValid($iban));
+  }
+
+  /**
+   * @return array<string, array{0: string}>
+   */
+  public static function validIbans(): array {
+    return [
+      'germany' => ['DE89370400440532013000'],
+      'grouped' => ['DE89 3704 0044 0532 0130 00'],
+      'lowercase' => ['de89370400440532013000'],
+      'austria' => ['AT611904300234573201'],
+      'netherlands with letters' => ['NL91ABNA0417164300'],
+    ];
+  }
+
+  /**
+   * @dataProvider invalidIbans
+   */
+  public function testAnInvalidIban(string $iban): void {
+    static::assertFalse((new IbanValidator())->isValid($iban));
+  }
+
+  /**
+   * @return array<string, array{0: string}>
+   */
+  public static function invalidIbans(): array {
+    return [
+      'wrong checksum' => ['DE88370400440532013000'],
+      'too short' => ['DE8937040044053201300'],
+      'unknown country' => ['XX89370400440532013000'],
+      'invalid character' => ['DE89370400440532013!00'],
+      'empty' => [''],
+    ];
+  }
+
+  public function testNormalizeStripsSeparatorsAndUppercases(): void {
+    static::assertSame('DE89370400440532013000', (new IbanValidator())->normalize(' de89 3704-0044 0532 0130 00 '));
+  }
+
+}

tools/phpcs/composer.json

@@ -0,0 +1,11 @@
+{
+  "repositories": [
+    {
+      "type": "git",
+      "url": "https://github.com/civicrm/coder.git"
+    }
+  ],
+  "require": {
+    "drupal/coder": "dev-8.x-2.x-civi"
+  }
+}

tools/phpstan/composer.json

@@ -0,0 +1,19 @@
+{
+    "require": {
+        "kcs/phpstan-strict-rules": "^2",
+        "phpstan/extension-installer": "^1.4",
+        "phpstan/phpstan": "^2",
+        "phpstan/phpstan-beberlei-assert": "^2",
+        "phpstan/phpstan-deprecation-rules": "^2",
+        "phpstan/phpstan-phpunit": "^2",
+        "phpstan/phpstan-strict-rules": "^2",
+        "phpstan/phpstan-webmozart-assert": "^2",
+        "voku/phpstan-rules": "^3.6"
+    },
+    "config": {
+        "allow-plugins": {
+            "phpstan/extension-installer": true
+        },
+        "sort-packages": true
+    }
+}

tools/phpunit/composer.json

@@ -0,0 +1,13 @@
+{
+    "require": {
+        "symfony/phpunit-bridge": "^7"
+    },
+    "scripts": {
+        "post-install-cmd": [
+            "@php vendor/bin/simple-phpunit install --configuration ../../phpunit.xml.dist"
+        ],
+        "post-update-cmd": [
+            "@php vendor/bin/simple-phpunit install --configuration ../../phpunit.xml.dist"
+        ]
+    }
+}