improved local test methods

.docker/Dockerfile-php7.0

@@ -0,0 +1,8 @@
+FROM php:7.0-cli-alpine
+
+COPY ./../.. /usr/src/myapp
+WORKDIR /usr/src/myapp
+
+RUN apk --no-cache add curl zip
+RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
+RUN composer install

.docker/Dockerfile-php7.1

@@ -0,0 +1,8 @@
+FROM php:7.1-cli-alpine
+
+COPY ./../.. /usr/src/myapp
+WORKDIR /usr/src/myapp
+
+RUN apk --no-cache add curl zip
+RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
+RUN composer install

.docker/Dockerfile-php7.2

@@ -0,0 +1,8 @@
+FROM php:7.2-cli-alpine
+
+COPY ./../.. /usr/src/myapp
+WORKDIR /usr/src/myapp
+
+RUN apk --no-cache add curl zip
+RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
+RUN composer install

.docker/Dockerfile-php7.3

@@ -0,0 +1,8 @@
+FROM php:7.3-cli-alpine
+
+COPY ./../.. /usr/src/myapp
+WORKDIR /usr/src/myapp
+
+RUN apk --no-cache add curl zip
+RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
+RUN composer install

.docker/Dockerfile-php7.4

@@ -0,0 +1,8 @@
+FROM php:7.4-cli-alpine
+
+COPY ./../.. /usr/src/myapp
+WORKDIR /usr/src/myapp
+
+RUN apk --no-cache add curl zip
+RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
+RUN composer install

.docker/Dockerfile-php8.0

@@ -0,0 +1,8 @@
+FROM php:8.0-cli-alpine
+
+COPY ./../.. /usr/src/myapp
+WORKDIR /usr/src/myapp
+
+RUN apk --no-cache add curl zip
+RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
+RUN composer install

.docker/Dockerfile-php8.1

@@ -0,0 +1,8 @@
+FROM php:8.1-cli-alpine
+
+COPY ./../.. /usr/src/myapp
+WORKDIR /usr/src/myapp
+
+RUN apk --no-cache add curl zip
+RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
+RUN composer install

.docker/Dockerfile-php8.2

@@ -0,0 +1,8 @@
+FROM php:8.2-cli-alpine
+
+COPY ./../.. /usr/src/myapp
+WORKDIR /usr/src/myapp
+
+RUN apk --no-cache add curl zip
+RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
+RUN composer install

.docker/Dockerfile-php8.3

@@ -0,0 +1,8 @@
+FROM php:8.3-cli-alpine
+
+COPY ./../.. /usr/src/myapp
+WORKDIR /usr/src/myapp
+
+RUN apk --no-cache add curl zip
+RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
+RUN composer install

.dockerignore

@@ -0,0 +1,7 @@
+.docker
+.dockerignore
+.git
+.github
+composer.lock
+docker-compose.yml
+vendor/

DEVELOPMENT.md

@@ -0,0 +1,25 @@
+# Development
+
+When a change is made, each php version should be tested in isolation, because depending on the PHP version, composer is downloading different files.
+
+The Github-ci will automatically performs the phpunit tests as a final check.
+
+For local testing, this can be done with the prepared docker images, using docker compose.
+
+### Running local PHPUnit tests
+
+```
+./docker-run-tests.sh
+```
+
+### Rebuild docker images
+
+```
+docker compose build
+```
+
+### Remove orphans
+
+```
+docker compose down --remove-orphans
+```

README.md

@@ -27,7 +27,7 @@
 composer require rboonzaijer/php-array-to-xml ^2.0
 ```
 
-Load the vendor files (these already loaded if you are using something like Symfony or Laravel)
+Require the vendor files (these already loaded if you are using something like Symfony or Laravel)
 ```php
 require __DIR__ . '/vendor/autoload.php';
 ```
@@ -469,14 +469,6 @@ Result (prettified):
 </root>
 ```
 
-# PHPUnit Tests
-Use a specific configuration file, depending on your php version:
-```
-./vendor/bin/phpunit --configuration ./tests/phpunit-7.0.xml
-./vendor/bin/phpunit --configuration ./tests/phpunit-7.1.xml
-./vendor/bin/phpunit --configuration ./tests/phpunit-7.2.xml
-./vendor/bin/phpunit --configuration ./tests/phpunit-7.3.xml
-./vendor/bin/phpunit --configuration ./tests/phpunit-7.4.xml
-./vendor/bin/phpunit --configuration ./tests/phpunit-8.0.xml
-./vendor/bin/phpunit --configuration ./tests/phpunit-8.1.xml
-```
+## Development
+
+- [DEVELOPMENT.md](DEVELOPMENT.md)

docker-compose.yml

@@ -0,0 +1,48 @@
+version: "3"
+
+services:
+
+  php8.3:
+    build:
+      context: .
+      dockerfile: .docker/Dockerfile-php8.3
+
+  php8.2:
+    build:
+      context: .
+      dockerfile: .docker/Dockerfile-php8.2
+
+  php8.1:
+    build:
+      context: .
+      dockerfile: .docker/Dockerfile-php8.1
+
+  php8.0:
+    build:
+      context: .
+      dockerfile: .docker/Dockerfile-php8.0
+
+  php7.4:
+    build:
+      context: .
+      dockerfile: .docker/Dockerfile-php7.4
+
+  php7.3:
+    build:
+      context: .
+      dockerfile: .docker/Dockerfile-php7.3
+
+  php7.2:
+    build:
+      context: .
+      dockerfile: .docker/Dockerfile-php7.2
+
+  php7.1:
+    build:
+      context: .
+      dockerfile: .docker/Dockerfile-php7.1
+
+  php7.0:
+    build:
+      context: .
+      dockerfile: .docker/Dockerfile-php7.0

docker-run-tests.sh

@@ -0,0 +1,10 @@
+docker compose run --rm php7.0 php ./vendor/bin/phpunit -c tests/phpunit-7.0.xml -v && \
+docker compose run --rm php7.1 php ./vendor/bin/phpunit -c tests/phpunit-7.1.xml -v && \
+docker compose run --rm php7.2 php ./vendor/bin/phpunit -c tests/phpunit-7.2.xml -v && \
+docker compose run --rm php7.3 php ./vendor/bin/phpunit -c tests/phpunit-7.3.xml -v && \
+docker compose run --rm php7.4 php ./vendor/bin/phpunit -c tests/phpunit-7.4.xml -v && \
+docker compose run --rm php8.0 php ./vendor/bin/phpunit -c tests/phpunit-8.0.xml -v && \
+docker compose run --rm php8.1 php ./vendor/bin/phpunit -c tests/phpunit-8.1.xml && \
+docker compose run --rm php8.2 php ./vendor/bin/phpunit -c tests/phpunit-8.2.xml && \
+docker compose run --rm php8.3 php ./vendor/bin/phpunit -c tests/phpunit-8.3.xml && \
+echo -e "\n\ndone.\n"

tests/phpunit-8.1.xml

@@ -1,30 +1,28 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!-- PHPUnit 9	>= PHP 7.3 (https://phpunit.de/supported-versions.html) -->
+<!-- PHPUnit 10	>= PHP 8.1 (https://phpunit.de/supported-versions.html) -->
 <phpunit
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         backupGlobals="false"
-        backupStaticAttributes="false"
         bootstrap="./../vendor/autoload.php"
         colors="true"
-        convertErrorsToExceptions="true"
-        convertNoticesToExceptions="true"
-        convertWarningsToExceptions="true"
         processIsolation="false"
         stopOnFailure="false"
-        cacheResult ="false"
-        xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd">
-  <coverage>
+        cacheResult="false"
+        xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.5/phpunit.xsd"
+        cacheDirectory=".phpunit.cache"
+        backupStaticProperties="false">
+  <testsuites>
+    <testsuite name="PhpArrayToXml Test Suite">
+      <directory>./../tests/</directory>
+    </testsuite>
+  </testsuites>
+  <source>
     <include>
       <directory>./../src</directory>
     </include>
     <exclude>
       <directory>./../vendor</directory>
       <directory>./../tests</directory>
     </exclude>
-  </coverage>
-  <testsuites>
-    <testsuite name="PhpArrayToXml Test Suite">
-      <directory>./../tests/</directory>
-    </testsuite>
-  </testsuites>
+  </source>
 </phpunit>