Pin PHPUnit version to avoid breaking unit tests for PHP 7+

PowerKiKi · PowerKiKi · commit 993f85a493f9 · 2017-04-03T13:19:40.000+09:00
diff --git a/.gitignore b/.gitignore
@@ -1,6 +1,5 @@
 # Composer stuff
 vendor/
-composer.lock
 tests/cov/
 tests/temp
 
diff --git a/composer.json b/composer.json
@@ -37,8 +37,8 @@
         "sabre/xml"    : ">=1.5 <3.0"
     },
     "require-dev" : {
-        "phpunit/phpunit" : "*",
-        "sabre/cs"        : "^1.0.0"
+        "sabre/cs"        : "^1.0.0",
+        "phpunit/phpunit": "^4.8"
 
     },
     "suggest" : {
