From a3af138f0cfd26fac799f6af8c3b1ba401576f1b Mon Sep 17 00:00:00 2001
From: Meritoo <github@meritoo.pl>
Date: Sat, 12 Feb 2022 13:33:30 +0100
Subject: [PATCH] Update documentation for Infection (Mutation Testing) and use
 the "nproc" command that returns the number of processors available

---
 docs/Development.md   | 8 +++++---
 phing/properties.dist | 2 +-
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/docs/Development.md b/docs/Development.md
index 19c6632..e2fce80 100644
--- a/docs/Development.md
+++ b/docs/Development.md
@@ -105,20 +105,22 @@ docker-compose exec php phing -f phing/tests.xml test:phpunit
 docker-compose run --rm phpunit --verbose --no-coverage
 ```
 
-# Mutation Tests
+# Infection - Mutation Testing
 
 Served by [Infection — Mutation Testing Framework](https://infection.github.io).
 
 ### Running tests
 
 ```bash
-docker-compose exec php vendor/bin/infection --threads=5
+$ docker-compose exec php bash
+root@18f2f0cfaa5d:/var/www/application# XDEBUG_MODE=coverage ./vendor/bin/infection --threads=$(nproc)
 ```
 
 or
 
 ```bash
-docker-compose exec php phing -f phing/tests.xml test:infection
+$ docker-compose exec php bash
+root@18f2f0cfaa5d:/var/www/application# XDEBUG_MODE=coverage phing -f phing/tests.xml test:infection
 ```
 
 ### Result of testing
diff --git a/phing/properties.dist b/phing/properties.dist
index c287955..76237a2 100644
--- a/phing/properties.dist
+++ b/phing/properties.dist
@@ -86,4 +86,4 @@ tests.database = ${dir.data.temporary}/database.sqlite
 # - Infection (mutation tests)
 #
 tests.phpunit.command = ./vendor/bin/phpunit --verbose
-tests.mutation.command = ./vendor/bin/infection --ansi --threads=5 --coverage=build/reports/infection
+tests.mutation.command = ./vendor/bin/infection --ansi --threads=$(nproc) --coverage=build/reports/infection