added code quality scripts

.scrutinizer.yml

@@ -0,0 +1,38 @@
+before_commands:
+    - "composer update --prefer-source"
+
+tools:
+    external_code_coverage:
+        timeout: 1800
+    php_code_coverage:
+        enabled: true
+    php_code_sniffer:
+        enabled: false
+    php_cpd:
+        enabled: true
+        excluded_dirs: ["tests", "vendor"]
+    php_cs_fixer:
+        enabled: true
+        config:
+            level: all
+        filter:
+            paths: ["src/*", "tests/*"]
+    php_loc:
+        enabled: true
+        excluded_dirs: ["tests", "vendor"]
+    php_mess_detector:
+        enabled: true
+        filter:
+            paths: ["src/*"]
+    php_pdepend:
+        enabled: true
+        excluded_dirs: ["tests", "vendor"]
+    php_analyzer:
+        enabled: true
+        filter:
+            paths: ["src/*", "tests/*"]
+    php_hhvm:
+        enabled: true
+        filter:
+            paths: ["src/*", "tests/*"]
+sensiolabs_security_checker: true

.travis.yml

@@ -0,0 +1,35 @@
+language: php
+
+cache: false
+sudo: false
+
+php:
+  - 5.6
+  - 7.0
+  - 7.1
+  - hhvm
+
+before_script:
+  - composer update
+  - if [ "$DEPENDENCIES" = 'low' ] ; then composer update --prefer-source --prefer-lowest --prefer-stable; fi
+  - git clone https://github.com/padraic/humbug.git && cd humbug && composer install && cd ..
+
+script:
+  - ./vendor/bin/phpunit --disallow-test-output --report-useless-tests --coverage-clover ./clover.xml
+  - ./vendor/bin/phpcs
+  - ./humbug/bin/humbug
+  - ./build/check-humbug-mutators.php
+
+env:
+  matrix:
+    - DEPENDENCIES="high"
+    - DEPENDENCIES="low"
+
+matrix:
+  allow_failures:
+    - php: hhvm
+
+after_script:
+  - wget https://scrutinizer-ci.com/ocular.phar
+  - php ocular.phar code-coverage:upload --format=php-clover ./clover.xml
+

build/check-humbug-mutators.php

@@ -0,0 +1,18 @@
+#!/usr/bin/env php
+<?php
+
+declare(strict_types=1);
+
+call_user_func(function () {
+    $log = json_decode(file_get_contents(__DIR__ . '/../humbug-log.json'), true);
+
+    if (! array_key_exists('escapes', $log['summary'])) {
+        throw new \UnexpectedValueException('Could not find "escapes" in summary');
+    }
+
+    echo file_get_contents(__DIR__ . '/../humbug-log.txt');
+
+    if ($log['summary']['escapes']) {
+        throw new \UnexpectedValueException('Humbug reported escaped mutants');
+    }
+});

humbug.json.dist

@@ -0,0 +1,12 @@
+{
+  "timeout": 30,
+  "source": {
+    "directories": [
+      "src"
+    ]
+  },
+  "logs": {
+    "text": "humbug-log.txt",
+    "json": "humbug-log.json"
+  }
+}

phpcs.xml.dist

@@ -0,0 +1,9 @@
+<?xml version="1.0"?>
+<ruleset name="Custom">
+    <description>custom code-style</description>
+    <file>./src</file>
+    <file>./tests</file>
+    <rule ref="PSR2">
+        <exclude name="Generic.Files.LineLength"/>
+    </rule>
+</ruleset>

phpunit.xml.dist

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit bootstrap="./tests/InvoiceNinjaModuleTest/Bootstrap.php"
+         colors="true"
+         verbose="true"
+         convertErrorsToExceptions="true"
+         convertNoticesToExceptions="true"
+         convertWarningsToExceptions="true"
+         backupGlobals="false"
+         backupStaticAttributes="false"
+         stopOnFailure="false"
+         syntaxCheck="true" >
+    <testsuites>
+        <testsuite name="InvoiceNinjaModule tests">
+            <directory suffix=".php">./tests/InvoiceNinjaModuleTest/</directory>
+        </testsuite>
+    </testsuites>
+    <filter>
+        <whitelist addUncoveredFilesFromWhitelist="true">
+            <directory suffix=".php">./src/</directory>
+        </whitelist>
+    </filter>
+</phpunit>