Add static isValid function to CronExpression

.gitattributes

@@ -1,8 +1,13 @@
 * text=auto
 
-.gitattributes export-ignore
-.gitignore export-ignore
-.php_cs export-ignore
-.styleci.yml export-ignore
-.travis.yml export-ignore
-phpunit.xml.dist export-ignore
+/.github export-ignore
+/tests export-ignore
+/.editorconfig export-ignore
+/.gitattributes export-ignore
+/.gitignore export-ignore
+/.php_cs export-ignore
+/.styleci.yml export-ignore
+/.travis.yml export-ignore
+/phpstan.neon export-ignore
+/phpunit.xml.dist export-ignore
+/phpstan.neon export-ignore

.github/FUNDING.yml

@@ -0,0 +1 @@
+github: [dragonmantank]

.github/workflows/tests.yml

@@ -0,0 +1,77 @@
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+name: Tests
+
+jobs:
+  phpstan:
+    name: PHPStan - PHP ${{ matrix.php }}
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        php: [7.2, 7.3, 7.4, 8.0, 8.1]
+
+    steps:
+      - name: "Checkout"
+        uses: actions/checkout@v2
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php }}
+          extensions: json, mbstring
+
+      - name: Install dependencies
+        run: composer update --prefer-dist --no-interaction
+
+      - name: Start Static Analyze
+        run: composer phpstan -n
+
+  phpunit:
+    name: PHPUnit - PHP ${{ matrix.php }}
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        php: [7.2, 7.3, 7.4, 8.0, 8.1]
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php }}
+          extensions: json, mbstring
+          coverage: pcov
+        env:
+          COMPOSER_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Setup problem matchers for PHPUnit
+        run: echo "::add-matcher::${{ runner.tool_cache }}/phpunit.json"
+
+      - name: Get Composer cache directory
+        id: composercache
+        run: echo "::set-output name=dir::$(composer config cache-files-dir)"
+
+      - name: Cache Composer dependencies
+        uses: actions/cache@v2
+        with:
+          path: ${{ steps.composercache.outputs.dir }}
+          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.json') }}
+          restore-keys: ${{ runner.os }}-composer-
+
+      - name: Install dependencies
+        run: composer update --prefer-dist --no-interaction
+
+      - name: Analyze & test
+        run: composer test -- -v --coverage-clover=coverage.xml

.php_cs

@@ -1,15 +1,82 @@
 <?php
 
-$finder = Symfony\CS\Finder\DefaultFinder::create()
+$finder = PhpCsFixer\Finder::create()
     ->in(__DIR__);
 
-$fixers = array(
-    '-psr0',
-    'long_array_syntax',
-);
+$config = PhpCsFixer\Config::create()
+    ->setRules([
+        '@Symfony' => true,
+        'declare_strict_types' => true,
+        'native_function_invocation' => [
+            'include' => ['@compiler_optimized'],
+            'scope' => 'namespaced',
+        ],
+        'phpdoc_align' => [
+            'align' => 'left',
+        ],
+        'blank_line_before_statement' => true,
+        'align_multiline_comment' => false,
+        'concat_space' => [
+            'spacing' => 'one',
+        ],
+        'array_syntax' => [
+            'syntax' => 'short',
+        ],
+        'combine_consecutive_issets' => true,
+        'combine_consecutive_unsets' => true,
+        'array_indentation' => true,
+        'no_extra_blank_lines' => [
+            'break',
+            'case',
+            'continue',
+            'curly_brace_block',
+            'default',
+            'extra',
+            'parenthesis_brace_block',
+            'return',
+            'square_brace_block',
+            'switch',
+            'throw',
+            'use',
+            'useTrait',
+            'use_trait',
+        ],
+        'compact_nullable_typehint' => true,
+        'escape_implicit_backslashes' => true,
+        'explicit_indirect_variable' => true,
+        'explicit_string_variable' => true,
+        'final_internal_class' => true,
+        'fully_qualified_strict_types' => true,
+        'function_to_constant' => [
+            'functions' => [
+                'get_class',
+                'get_called_class',
+                'php_sapi_name',
+                'phpversion',
+                'pi',
+            ],
+        ],
+        'list_syntax' => [
+            'syntax' => 'short',
+        ],
+        'logical_operators' => true,
+        'no_alternative_syntax' => true,
+        'no_null_property_initialization' => true,
+        'no_short_echo_tag' => true,
+        'no_superfluous_elseif' => false,
+        'no_unreachable_default_argument_value' => true,
+        'no_unset_on_property' => false,
+        'no_useless_else' => false,
+        'ordered_imports' => true,
+        'phpdoc_add_missing_param_annotation' => true,
+        'phpdoc_order' => true,
+        'phpdoc_trim_consecutive_blank_line_separation' => true,
+        'phpdoc_types_order' => true,
+        'return_assignment' => true,
+        'string_line_ending' => true,
+        'strict_param' => true,
+        'strict_comparison' => true,
+    ])
+    ->setFinder($finder);
 
-return Symfony\CS\Config\Config::create()
-    ->finder($finder)
-    ->fixers($fixers)
-    ->level(Symfony\CS\FixerInterface::PSR2_LEVEL)
-    ->setUsingCache(true);
+return $config;

.styleci.yml

@@ -1,5 +1,5 @@
 preset: psr2
 
 enabled:
-  - long_array_syntax
+  - short_array_syntax
   - method_separation

.travis.yml

@@ -1,17 +1,32 @@
 language: php
 
-php:
-  - 7.0
-  - 7.1
-  - hhvm
+dist: bionic
 
-sudo: false
-
-install: travis_retry composer install --no-interaction --prefer-dist
+matrix:
+  include:
+    - php: 7.1
+    - php: 7.1
+      env: dependencies=lowest
+    - php: 7.2
+    - php: 7.2
+      env: dependencies=lowest
+    - php: 7.3
+    - php: 7.3
+      env: dependencies=lowest
+    - php: 7.4
+    - php: 7.4
+      env: dependencies=lowest
+    - php: nightly
+      install: travis_retry composer install --no-interaction --prefer-dist --ignore-platform-reqs
 
-script: phpunit --coverage-text
+install:
+    - |
+        if [[ "$dependencies" = "lowest" ]]; then
+          travis_retry composer update --no-interaction --prefer-lowest --prefer-stable -n
+        else
+          travis_retry composer install --no-interaction --prefer-dist
+        fi
 
-matrix:
-  allow_failures:
-    - php: hhvm
-  fast_finish: true
+script:
+  - vendor/bin/phpunit --coverage-text
+  - composer phpstan