Switch phpunit version

Author: Greg Bowler

Diff for: Dockerfile

@@ -6,7 +6,15 @@ LABEL homepage="https://github.com/php-actions/phpunit"
 LABEL maintainer="Greg Bowler <[email protected]>"
 
 RUN curl https://phar.phpunit.de/phpunit-9.4.2.phar > phpunit-9.phar
+RUN curl https://phar.phpunit.de/phpunit-8.5.8.phar > phpunit-8.phar
+RUN curl https://phar.phpunit.de/phpunit-7.5.9.phar > phpunit-7.phar
+RUN curl https://phar.phpunit.de/phpunit-6.5.9.phar > phpunit-6.phar
 RUN chmod +x *.phar
-RUN ln -s $(pwd)/phpunit-9.phar /usr/local/bin/phpunit
+RUN ln -s $(pwd)/phpunit-9.phar /usr/local/bin/phpunit-9
+RUN ln -s $(pwd)/phpunit-8.phar /usr/local/bin/phpunit-8
+RUN ln -s $(pwd)/phpunit-7.phar /usr/local/bin/phpunit-7
+RUN ln -s $(pwd)/phpunit-6.phar /usr/local/bin/phpunit-6
+RUN ln -s /usr/local/bin/phpunit-9 /usr/local/bin/phpunit
+COPY switch-phpunit-version /usr/local/bin/.
 COPY entrypoint /usr/local/bin/entrypoint
 ENTRYPOINT ["/usr/local/bin/entrypoint"]

Diff for: entrypoint

@@ -8,6 +8,12 @@ then
 	switch-php-version $action_php_version
 fi
 
+if [ -n "$action_phpunit_version" ]
+then
+	echo "Using PHPUnit version: $action_phpunit_version"
+	switch-phpunit-version $action_phpunit_version
+fi
+
 command_string="phpunit"
 
 if [ -n "$action_configuration" ]

Diff for: switch-phpunit-version

@@ -0,0 +1,10 @@
+#!/bin/bash
+if [ "$1" = "latest" ]
+then
+	version=9
+else
+	version=$1
+fi
+
+rm -f /usr/local/bin/phpunit
+ln -s "/usr/local/bin/phpunit-$version" "/usr/local/bin/phpunit"