tests: Added custom PHP Mess Detector rules and enabled it with Code …

…Climate

.codeclimate.yml

@@ -9,8 +9,11 @@ plugins:
           mass_threshold: 45
   fixme:
     enabled: true
-  #phpmd:
-  #  enabled: true
+  phpmd:
+    enabled: true
+    config:
+      file_extensions: "php"
+      rulesets: "codesize,controversial,unusedcode,phpmd_ruleset.xml"
   git-legal:
     enabled: true
   markdownlint:
@@ -50,7 +53,7 @@ checks:
       threshold: 4
   similar-code:
     config:
-      threshold: # language-specific defaults. an override will affect all languages.
+      threshold: 40 # language-specific defaults. an override will affect all languages.
   identical-code:
     config:
       threshold: # language-specific defaults. an override will affect all languages.

phpmd_ruleset.xml

@@ -0,0 +1,38 @@
+<?xml version="1.0"?>
+<ruleset name="PHPMD rule set for my project" xmlns="http://pmd.sf.net/ruleset/1.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://pmd.sf.net/ruleset/1.0.0 http://pmd.sf.net/ruleset_xml_schema.xsd"
+         xsi:noNamespaceSchemaLocation="http://pmd.sf.net/ruleset_xml_schema.xsd">
+    <description>Custom rules for checking my project</description>
+
+    <rule ref="rulesets/cleancode.xml">
+        <exclude name="StaticAccess"/>
+    </rule>
+
+    <rule ref="rulesets/design.xml">
+        <exclude name="CouplingBetweenObjects"/>
+    </rule>
+
+    <rule ref="rulesets/design.xml/CouplingBetweenObjects">
+        <properties>
+            <property name="minimum" value="25" />
+        </properties>
+    </rule>
+
+    <rule ref="rulesets/naming.xml">
+        <exclude name="ShortVariable"/>
+        <exclude name="LongVariable"/>
+    </rule>
+
+    <rule ref="rulesets/naming.xml/ShortVariable">
+        <properties>
+            <property name="minimum" value="2" />
+        </properties>
+    </rule>
+
+    <rule ref="rulesets/naming.xml/LongVariable">
+        <properties>
+            <property name="maximum" value="30" />
+        </properties>
+    </rule>
+</ruleset>