Ubuntu 20

.gitignore

@@ -1 +1,2 @@
 vendor/
+.phpunit.result.cache

Makefile

@@ -0,0 +1,32 @@
+.RECIPEPREFIX =
+.DEFAULT_GOAL := help
+
+COMPOSER :=$(shell which composer | grep -o composer)
+
+.PHONY: help
+help:
+	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'
+
+.PHONY: composer
+composer: ## Composer install task
+ifeq ($(COMPOSER),composer)
+	@COMPOSER_ALLOW_SUPERUSER=1 composer install --no-scripts
+else
+	@echo 'composer not found!'
+endif
+
+.PHONY: test
+test: composer phpunit ## Test task: composer, phpunit
+
+.PHONY: phpunit
+phpunit: ## PHPUnit
+	@COMPOSER_ALLOW_SUPERUSER=1 ./vendor/bin/phpunit spec
+
+.PHONY: composer-upgrade
+composer-upgrade:
+ifeq ($(COMPOSER),composer)
+	@COMPOSER_ALLOW_SUPERUSER=1 composer upgrade --no-scripts
+else
+	@echo 'composer not found!'
+endif
+

composer.json

@@ -8,10 +8,10 @@
         }
     ],
     "require": {
-        "php": ">=5.6.0"
+        "php": ">=7.4"
     },
     "require-dev": {
-        "phpunit/phpunit": "~4.0"
+        "phpunit/phpunit": "^9"
     },
     "autoload": {
       "psr-0": {