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PMD CI (pmd-bot) bc94259ca5 Update documentation 
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» Best Practices
<a
target="_blank"
href="https://github.com/pmd/pmd/blob/master/docs/../pmd-apex/src/main/resources/category/apex/bestpractices.xml"
class="float-right"
role="button"
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>
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<div class="post-header">
<h1 class="post-title-main">Best Practices</h1>
</div>
<div class="post-content" data-github-edit-url="https://github.com/pmd/pmd/blob/master/docs/../pmd-apex/src/main/resources/category/apex/bestpractices.xml">
<div class="summary">Rules which enforce generally accepted best practices.</div>
<details id="inline-toc-details">
<summary>Table of Contents</summary>
<div id="inline-toc"><!-- empty, move TOC here when screen size too small --></div>
</details>
<!-- DO NOT EDIT THIS FILE. This file is generated from file ../pmd-apex/src/main/resources/category/apex/bestpractices.xml. -->
<h2 id="apexassertionsshouldincludemessage">ApexAssertionsShouldIncludeMessage</h2>
<p><strong>Since:</strong> PMD 6.13.0</p>
<p><strong>Priority:</strong> Medium (3)</p>
<p>The second parameter of System.assert/third parameter of System.assertEquals/System.assertNotEquals is a message.
Having a second/third parameter provides more information and makes it easier to debug the test failure and
improves the readability of test output.</p>
<p><strong>This rule is defined by the following Java class:</strong> <a href="https://github.com/pmd/pmd/blob/master/pmd-apex/src/main/java/net/sourceforge/pmd/lang/apex/rule/bestpractices/ApexAssertionsShouldIncludeMessageRule.java">net.sourceforge.pmd.lang.apex.rule.bestpractices.ApexAssertionsShouldIncludeMessageRule</a></p>
<p><strong>Example(s):</strong></p>
<div class="language-java highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nd">@isTest</span>
<span class="kd">public</span> <span class="kd">class</span> <span class="nc">Foo</span> <span class="o">{</span>
<span class="nd">@isTest</span>
<span class="kd">static</span> <span class="kt">void</span> <span class="nf">methodATest</span><span class="o">()</span> <span class="o">{</span>
<span class="nc">System</span><span class="o">.</span><span class="na">assertNotEquals</span><span class="o">(</span><span class="err">'</span><span class="mi">123</span><span class="err">'</span><span class="o">,</span> <span class="n">o</span><span class="o">.</span><span class="na">StageName</span><span class="o">);</span> <span class="c1">// not good</span>
<span class="nc">System</span><span class="o">.</span><span class="na">assertEquals</span><span class="o">(</span><span class="err">'</span><span class="mi">123</span><span class="err">'</span><span class="o">,</span> <span class="n">o</span><span class="o">.</span><span class="na">StageName</span><span class="o">,</span> <span class="err">'</span><span class="nc">Opportunity</span> <span class="n">stageName</span> <span class="n">is</span> <span class="n">wrong</span><span class="o">.</span><span class="err">'</span><span class="o">);</span> <span class="c1">// good</span>
<span class="nc">System</span><span class="o">.</span><span class="na">assert</span><span class="o">(</span><span class="n">o</span><span class="o">.</span><span class="na">isClosed</span><span class="o">);</span> <span class="c1">// not good</span>
<span class="nc">System</span><span class="o">.</span><span class="na">assert</span><span class="o">(</span><span class="n">o</span><span class="o">.</span><span class="na">isClosed</span><span class="o">,</span> <span class="err">'</span><span class="nc">Opportunity</span> <span class="n">is</span> <span class="n">not</span> <span class="n">closed</span><span class="o">.</span><span class="err">'</span><span class="o">);</span> <span class="c1">// good</span>
<span class="o">}</span>
<span class="o">}</span>
</code></pre></div></div>
<p><strong>Use this rule by referencing it:</strong></p>
<div class="language-xml highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nt">&lt;rule</span> <span class="na">ref=</span><span class="s">"category/apex/bestpractices.xml/ApexAssertionsShouldIncludeMessage"</span> <span class="nt">/&gt;</span>
</code></pre></div></div>
<h2 id="apexunittestclassshouldhaveasserts">ApexUnitTestClassShouldHaveAsserts</h2>
<p><strong>Since:</strong> PMD 5.5.1</p>
<p><strong>Priority:</strong> Medium (3)</p>
<p>Apex unit tests should include at least one assertion. This makes the tests more robust, and using assert
with messages provide the developer a clearer idea of what the test does. Custom assert method invocation
patterns can be specified using the ‘additionalAssertMethodPattern’ property if required.</p>
<p><strong>This rule is defined by the following Java class:</strong> <a href="https://github.com/pmd/pmd/blob/master/pmd-apex/src/main/java/net/sourceforge/pmd/lang/apex/rule/bestpractices/ApexUnitTestClassShouldHaveAssertsRule.java">net.sourceforge.pmd.lang.apex.rule.bestpractices.ApexUnitTestClassShouldHaveAssertsRule</a></p>
<p><strong>Example(s):</strong></p>
<div class="language-java highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nd">@isTest</span>
<span class="kd">public</span> <span class="kd">class</span> <span class="nc">Foo</span> <span class="o">{</span>
<span class="kd">public</span> <span class="kd">static</span> <span class="n">testMethod</span> <span class="kt">void</span> <span class="nf">testSomething</span><span class="o">()</span> <span class="o">{</span>
<span class="nc">Account</span> <span class="n">a</span> <span class="o">=</span> <span class="kc">null</span><span class="o">;</span>
<span class="c1">// This is better than having a NullPointerException</span>
<span class="c1">// System.assertNotEquals(a, null, 'account not found');</span>
<span class="n">a</span><span class="o">.</span><span class="na">toString</span><span class="o">();</span>
<span class="o">}</span>
<span class="o">}</span>
</code></pre></div></div>
<p><strong>This rule has the following properties:</strong></p>
<table>
<thead>
<tr>
<th>Name</th>
<th>Default Value</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>additionalAssertMethodPattern</td>
<td> </td>
<td>A regular expression for one or more custom test assertion method patterns.</td>
</tr>
</tbody>
</table>
<p><strong>Use this rule with the default properties by just referencing it:</strong></p>
<div class="language-xml highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nt">&lt;rule</span> <span class="na">ref=</span><span class="s">"category/apex/bestpractices.xml/ApexUnitTestClassShouldHaveAsserts"</span> <span class="nt">/&gt;</span>
</code></pre></div></div>
<p><strong>Use this rule and customize it:</strong></p>
<div class="language-xml highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nt">&lt;rule</span> <span class="na">ref=</span><span class="s">"category/apex/bestpractices.xml/ApexUnitTestClassShouldHaveAsserts"</span><span class="nt">&gt;</span>
<span class="nt">&lt;properties&gt;</span>
<span class="nt">&lt;property</span> <span class="na">name=</span><span class="s">"additionalAssertMethodPattern"</span> <span class="na">value=</span><span class="s">""</span> <span class="nt">/&gt;</span>
<span class="nt">&lt;/properties&gt;</span>
<span class="nt">&lt;/rule&gt;</span>
</code></pre></div></div>
<h2 id="apexunittestclassshouldhaverunas">ApexUnitTestClassShouldHaveRunAs</h2>
<p><strong>Since:</strong> PMD 6.51.0</p>
<p><strong>Priority:</strong> Medium (3)</p>
<p>Apex unit tests should include at least one runAs method. This makes the tests more robust, and independent from the
user running it.</p>
<p><strong>This rule is defined by the following Java class:</strong> <a href="https://github.com/pmd/pmd/blob/master/pmd-apex/src/main/java/net/sourceforge/pmd/lang/apex/rule/bestpractices/ApexUnitTestClassShouldHaveRunAsRule.java">net.sourceforge.pmd.lang.apex.rule.bestpractices.ApexUnitTestClassShouldHaveRunAsRule</a></p>
<p><strong>Example(s):</strong></p>
<div class="language-java highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nd">@isTest</span>
<span class="kd">private</span> <span class="kd">class</span> <span class="nc">TestRunAs</span> <span class="o">{</span>
<span class="kd">public</span> <span class="kd">static</span> <span class="n">testMethod</span> <span class="kt">void</span> <span class="nf">testRunAs</span><span class="o">()</span> <span class="o">{</span>
<span class="c1">// Setup test data</span>
<span class="c1">// Create a unique UserName</span>
<span class="nc">String</span> <span class="n">uniqueUserName</span> <span class="o">=</span> <span class="err">'</span><span class="n">standarduser</span><span class="err">'</span> <span class="o">+</span> <span class="nc">DateTime</span><span class="o">.</span><span class="na">now</span><span class="o">().</span><span class="na">getTime</span><span class="o">()</span> <span class="o">+</span> <span class="err">'</span><span class="nd">@testorg</span><span class="o">.</span><span class="na">com</span><span class="err">'</span><span class="o">;</span>
<span class="c1">// This code runs as the system user</span>
<span class="nc">Profile</span> <span class="n">p</span> <span class="o">=</span> <span class="o">[</span><span class="no">SELECT</span> <span class="nc">Id</span> <span class="no">FROM</span> <span class="nc">Profile</span> <span class="no">WHERE</span> <span class="nc">Name</span><span class="o">=</span><span class="err">'</span><span class="nc">Standard</span> <span class="nc">User</span><span class="err">'</span><span class="o">];</span>
<span class="nc">User</span> <span class="n">u</span> <span class="o">=</span> <span class="k">new</span> <span class="nc">User</span><span class="o">(</span><span class="nc">Alias</span> <span class="o">=</span> <span class="err">'</span><span class="n">standt</span><span class="err">'</span><span class="o">,</span> <span class="nc">Email</span><span class="o">=</span><span class="err">'</span><span class="n">standarduser</span><span class="nd">@testorg</span><span class="o">.</span><span class="na">com</span><span class="err">'</span><span class="o">,</span>
<span class="nc">EmailEncodingKey</span><span class="o">=</span><span class="err">'</span><span class="no">UTF</span><span class="o">-</span><span class="mi">8</span><span class="err">'</span><span class="o">,</span> <span class="nc">LastName</span><span class="o">=</span><span class="err">'</span><span class="nc">Testing</span><span class="err">'</span><span class="o">,</span> <span class="nc">LanguageLocaleKey</span><span class="o">=</span><span class="err">'</span><span class="n">en_US</span><span class="err">'</span><span class="o">,</span>
<span class="nc">LocaleSidKey</span><span class="o">=</span><span class="err">'</span><span class="n">en_US</span><span class="err">'</span><span class="o">,</span> <span class="nc">ProfileId</span> <span class="o">=</span> <span class="n">p</span><span class="o">.</span><span class="na">Id</span><span class="o">,</span>
<span class="nc">TimeZoneSidKey</span><span class="o">=</span><span class="err">'</span><span class="nc">America</span><span class="o">/</span><span class="n">Los_Angeles</span><span class="err">'</span><span class="o">,</span>
<span class="nc">UserName</span><span class="o">=</span><span class="n">uniqueUserName</span><span class="o">);</span>
<span class="nc">System</span><span class="o">.</span><span class="na">runAs</span><span class="o">(</span><span class="n">u</span><span class="o">)</span> <span class="o">{</span>
<span class="c1">// The following code runs as user 'u'</span>
<span class="nc">System</span><span class="o">.</span><span class="na">debug</span><span class="o">(</span><span class="err">'</span><span class="nc">Current</span> <span class="nl">User:</span> <span class="err">'</span> <span class="o">+</span> <span class="nc">UserInfo</span><span class="o">.</span><span class="na">getUserName</span><span class="o">());</span>
<span class="nc">System</span><span class="o">.</span><span class="na">debug</span><span class="o">(</span><span class="err">'</span><span class="nc">Current</span> <span class="nl">Profile:</span> <span class="err">'</span> <span class="o">+</span> <span class="nc">UserInfo</span><span class="o">.</span><span class="na">getProfileId</span><span class="o">());</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="o">}</span>
</code></pre></div></div>
<p><strong>Use this rule by referencing it:</strong></p>
<div class="language-xml highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nt">&lt;rule</span> <span class="na">ref=</span><span class="s">"category/apex/bestpractices.xml/ApexUnitTestClassShouldHaveRunAs"</span> <span class="nt">/&gt;</span>
</code></pre></div></div>
<h2 id="apexunittestmethodshouldhaveistestannotation">ApexUnitTestMethodShouldHaveIsTestAnnotation</h2>
<p><strong>Since:</strong> PMD 6.13.0</p>
<p><strong>Priority:</strong> Medium (3)</p>
<p>Apex test methods should have <code class="language-plaintext highlighter-rouge">@isTest</code> annotation instead of the <code class="language-plaintext highlighter-rouge">testMethod</code> keyword,
as <code class="language-plaintext highlighter-rouge">testMethod</code> is deprecated.
Salesforce advices to use <a href="https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_classes_annotation_isTest.htm">@isTest</a>
annotation for test classes and methods.</p>
<p><strong>This rule is defined by the following XPath expression:</strong></p>
<div class="language-xpath highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="o">//</span><span class="nt">Method</span><span class="p">[</span><span class="nt">ModifierNode</span><span class="p">[</span><span class="na">@DeprecatedTestMethod</span><span class="w"> </span><span class="err">=</span><span class="w"> </span><span class="nf">true</span><span class="p">()]]</span><span class="w">
</span></code></pre></div></div>
<p><strong>Example(s):</strong></p>
<div class="language-java highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nd">@isTest</span>
<span class="kd">private</span> <span class="kd">class</span> <span class="nc">ATest</span> <span class="o">{</span>
<span class="nd">@isTest</span>
<span class="kd">static</span> <span class="kt">void</span> <span class="nf">methodATest</span><span class="o">()</span> <span class="o">{</span>
<span class="o">}</span>
<span class="kd">static</span> <span class="kt">void</span> <span class="nf">methodBTest</span><span class="o">()</span> <span class="o">{</span>
<span class="o">}</span>
<span class="nd">@isTest</span> <span class="kd">static</span> <span class="kt">void</span> <span class="nf">methodCTest</span><span class="o">()</span> <span class="o">{</span>
<span class="nc">System</span><span class="o">.</span><span class="na">assert</span><span class="o">(</span><span class="mi">1</span><span class="o">==</span><span class="mi">2</span><span class="o">);</span>
<span class="o">}</span>
<span class="kd">static</span> <span class="n">testmethod</span> <span class="kt">void</span> <span class="nf">methodCTest</span><span class="o">()</span> <span class="o">{</span>
<span class="nc">System</span><span class="o">.</span><span class="na">debug</span><span class="o">(</span><span class="err">'</span><span class="no">I</span> <span class="n">am</span> <span class="n">a</span> <span class="n">debug</span> <span class="n">statement</span><span class="err">'</span><span class="o">);</span>
<span class="o">}</span>
<span class="kd">private</span> <span class="kt">void</span> <span class="nf">fetchData</span><span class="o">()</span> <span class="o">{</span>
<span class="o">}</span>
<span class="o">}</span>
</code></pre></div></div>
<p><strong>Use this rule by referencing it:</strong></p>
<div class="language-xml highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nt">&lt;rule</span> <span class="na">ref=</span><span class="s">"category/apex/bestpractices.xml/ApexUnitTestMethodShouldHaveIsTestAnnotation"</span> <span class="nt">/&gt;</span>
</code></pre></div></div>
<h2 id="apexunittestshouldnotuseseealldatatrue">ApexUnitTestShouldNotUseSeeAllDataTrue</h2>
<p><strong>Since:</strong> PMD 5.5.1</p>
<p><strong>Priority:</strong> Medium (3)</p>
<p>Apex unit tests should not use @isTest(seeAllData=true) because it opens up the existing database data for unexpected modification by tests.</p>
<p><strong>This rule is defined by the following Java class:</strong> <a href="https://github.com/pmd/pmd/blob/master/pmd-apex/src/main/java/net/sourceforge/pmd/lang/apex/rule/bestpractices/ApexUnitTestShouldNotUseSeeAllDataTrueRule.java">net.sourceforge.pmd.lang.apex.rule.bestpractices.ApexUnitTestShouldNotUseSeeAllDataTrueRule</a></p>
<p><strong>Example(s):</strong></p>
<div class="language-java highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nd">@isTest</span><span class="o">(</span><span class="n">seeAllData</span> <span class="o">=</span> <span class="kc">true</span><span class="o">)</span>
<span class="kd">public</span> <span class="kd">class</span> <span class="nc">Foo</span> <span class="o">{</span>
<span class="kd">public</span> <span class="kd">static</span> <span class="n">testMethod</span> <span class="kt">void</span> <span class="nf">testSomething</span><span class="o">()</span> <span class="o">{</span>
<span class="nc">Account</span> <span class="n">a</span> <span class="o">=</span> <span class="kc">null</span><span class="o">;</span>
<span class="c1">// This is better than having a NullPointerException</span>
<span class="c1">// System.assertNotEquals(a, null, 'account not found');</span>
<span class="n">a</span><span class="o">.</span><span class="na">toString</span><span class="o">();</span>
<span class="o">}</span>
<span class="o">}</span>
</code></pre></div></div>
<p><strong>Use this rule by referencing it:</strong></p>
<div class="language-xml highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nt">&lt;rule</span> <span class="na">ref=</span><span class="s">"category/apex/bestpractices.xml/ApexUnitTestShouldNotUseSeeAllDataTrue"</span> <span class="nt">/&gt;</span>
</code></pre></div></div>
<h2 id="avoidglobalmodifier">AvoidGlobalModifier</h2>
<p><strong>Since:</strong> PMD 5.5.0</p>
<p><strong>Priority:</strong> Medium (3)</p>
<p>Global classes should be avoided (especially in managed packages) as they can never be deleted or changed in signature. Always check twice if something needs to be global.
Many interfaces (e.g. Batch) required global modifiers in the past but don’t require this anymore. Don’t lock yourself in.</p>
<p><strong>This rule is defined by the following Java class:</strong> <a href="https://github.com/pmd/pmd/blob/master/pmd-apex/src/main/java/net/sourceforge/pmd/lang/apex/rule/bestpractices/AvoidGlobalModifierRule.java">net.sourceforge.pmd.lang.apex.rule.bestpractices.AvoidGlobalModifierRule</a></p>
<p><strong>Example(s):</strong></p>
<div class="language-java highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="n">global</span> <span class="kd">class</span> <span class="nc">Unchangeable</span> <span class="o">{</span>
<span class="n">global</span> <span class="nc">UndeletableType</span> <span class="nf">unchangable</span><span class="o">(</span><span class="nc">UndeletableType</span> <span class="n">param</span><span class="o">)</span> <span class="o">{</span>
<span class="c1">// ...</span>
<span class="o">}</span>
<span class="o">}</span>
</code></pre></div></div>
<p><strong>Use this rule by referencing it:</strong></p>
<div class="language-xml highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nt">&lt;rule</span> <span class="na">ref=</span><span class="s">"category/apex/bestpractices.xml/AvoidGlobalModifier"</span> <span class="nt">/&gt;</span>
</code></pre></div></div>
<h2 id="avoidlogicintrigger">AvoidLogicInTrigger</h2>
<p><strong>Since:</strong> PMD 5.5.0</p>
<p><strong>Priority:</strong> Medium (3)</p>
<p>As triggers do not allow methods like regular classes they are less flexible and suited to apply good encapsulation style.
Therefore delegate the triggers work to a regular class (often called Trigger handler class).</p>
<p>See more here: <a href="https://developer.salesforce.com/page/Trigger_Frameworks_and_Apex_Trigger_Best_Practices">https://developer.salesforce.com/page/Trigger_Frameworks_and_Apex_Trigger_Best_Practices</a></p>
<p><strong>This rule is defined by the following Java class:</strong> <a href="https://github.com/pmd/pmd/blob/master/pmd-apex/src/main/java/net/sourceforge/pmd/lang/apex/rule/bestpractices/AvoidLogicInTriggerRule.java">net.sourceforge.pmd.lang.apex.rule.bestpractices.AvoidLogicInTriggerRule</a></p>
<p><strong>Example(s):</strong></p>
<div class="language-java highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="n">trigger</span> <span class="nc">Accounts</span> <span class="n">on</span> <span class="nf">Account</span> <span class="o">(</span><span class="n">before</span> <span class="n">insert</span><span class="o">,</span> <span class="n">before</span> <span class="n">update</span><span class="o">,</span> <span class="n">before</span> <span class="n">delete</span><span class="o">,</span> <span class="n">after</span> <span class="n">insert</span><span class="o">,</span> <span class="n">after</span> <span class="n">update</span><span class="o">,</span> <span class="n">after</span> <span class="n">delete</span><span class="o">,</span> <span class="n">after</span> <span class="n">undelete</span><span class="o">)</span> <span class="o">{</span>
<span class="k">for</span><span class="o">(</span><span class="nc">Account</span> <span class="n">acc</span> <span class="o">:</span> <span class="nc">Trigger</span><span class="o">.</span><span class="na">new</span><span class="o">)</span> <span class="o">{</span>
<span class="k">if</span><span class="o">(</span><span class="nc">Trigger</span><span class="o">.</span><span class="na">isInsert</span><span class="o">)</span> <span class="o">{</span>
<span class="c1">// ...</span>
<span class="o">}</span>
<span class="c1">// ...</span>
<span class="k">if</span><span class="o">(</span><span class="nc">Trigger</span><span class="o">.</span><span class="na">isDelete</span><span class="o">)</span> <span class="o">{</span>
<span class="c1">// ...</span>
<span class="o">}</span>
<span class="o">}</span>
<span class="o">}</span>
</code></pre></div></div>
<p><strong>Use this rule by referencing it:</strong></p>
<div class="language-xml highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nt">&lt;rule</span> <span class="na">ref=</span><span class="s">"category/apex/bestpractices.xml/AvoidLogicInTrigger"</span> <span class="nt">/&gt;</span>
</code></pre></div></div>
<h2 id="debugsshoulduselogginglevel">DebugsShouldUseLoggingLevel</h2>
<p><strong>Since:</strong> PMD 6.18.0</p>
<p><strong>Priority:</strong> Medium (3)</p>
<p>The first parameter of System.debug, when using the signature with two parameters, is a LoggingLevel enum.</p>
<p>Having the Logging Level specified provides a cleaner log, and improves readability of it.</p>
<p><strong>This rule is defined by the following XPath expression:</strong></p>
<div class="language-xpath highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="o">//</span><span class="nt">MethodCallExpression</span><span class="p">[</span><span class="nf">lower-case</span><span class="p">(</span><span class="na">@FullMethodName</span><span class="p">)</span><span class="err">=</span><span class="s1">'system.debug'</span><span class="p">][</span><span class="nf">count</span><span class="p">(</span><span class="err">*</span><span class="p">)</span><span class="err">=</span><span class="m">2</span><span class="w">
</span><span class="ow">or</span><span class="w"> </span><span class="p">(</span><span class="nv">$strictMode</span><span class="err">=</span><span class="nf">true</span><span class="p">()</span><span class="w"> </span><span class="ow">and</span><span class="w"> </span><span class="nf">count</span><span class="p">(</span><span class="err">*</span><span class="p">)</span><span class="err">=</span><span class="m">3</span><span class="w"> </span><span class="ow">and</span><span class="w"> </span><span class="nf">lower-case</span><span class="p">(</span><span class="nt">VariableExpression</span><span class="err">/</span><span class="na">@Image</span><span class="p">)</span><span class="err">=</span><span class="s1">'debug'</span><span class="p">)]</span><span class="w">
</span></code></pre></div></div>
<p><strong>Example(s):</strong></p>
<div class="language-java highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nd">@isTest</span>
<span class="kd">public</span> <span class="kd">class</span> <span class="nc">Foo</span> <span class="o">{</span>
<span class="nd">@isTest</span>
<span class="kd">static</span> <span class="kt">void</span> <span class="nf">bar</span><span class="o">()</span> <span class="o">{</span>
<span class="nc">System</span><span class="o">.</span><span class="na">debug</span><span class="o">(</span><span class="err">'</span><span class="nc">Hey</span> <span class="k">this</span> <span class="n">code</span> <span class="n">executed</span><span class="o">.</span><span class="err">'</span><span class="o">);</span> <span class="c1">// not good</span>
<span class="nc">System</span><span class="o">.</span><span class="na">debug</span><span class="o">(</span><span class="nc">LoggingLevel</span><span class="o">.</span><span class="na">WARN</span><span class="o">,</span> <span class="err">'</span><span class="nc">Hey</span><span class="o">,</span> <span class="n">something</span> <span class="n">might</span> <span class="n">be</span> <span class="n">wrong</span><span class="o">.</span><span class="err">'</span><span class="o">);</span> <span class="c1">// good</span>
<span class="nc">System</span><span class="o">.</span><span class="na">debug</span><span class="o">(</span><span class="nc">LoggingLevel</span><span class="o">.</span><span class="na">DEBUG</span><span class="o">,</span> <span class="err">'</span><span class="nc">Hey</span><span class="o">,</span> <span class="n">something</span> <span class="n">happened</span><span class="o">.</span><span class="err">'</span><span class="o">);</span> <span class="c1">// not good when on strict mode</span>
<span class="o">}</span>
<span class="o">}</span>
</code></pre></div></div>
<p><strong>This rule has the following properties:</strong></p>
<table>
<thead>
<tr>
<th>Name</th>
<th>Default Value</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>strictMode</td>
<td>false</td>
<td>If true, mark statements that use the DEBUG enum of LoggingLevel.</td>
</tr>
</tbody>
</table>
<p><strong>Use this rule with the default properties by just referencing it:</strong></p>
<div class="language-xml highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nt">&lt;rule</span> <span class="na">ref=</span><span class="s">"category/apex/bestpractices.xml/DebugsShouldUseLoggingLevel"</span> <span class="nt">/&gt;</span>
</code></pre></div></div>
<p><strong>Use this rule and customize it:</strong></p>
<div class="language-xml highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nt">&lt;rule</span> <span class="na">ref=</span><span class="s">"category/apex/bestpractices.xml/DebugsShouldUseLoggingLevel"</span><span class="nt">&gt;</span>
<span class="nt">&lt;properties&gt;</span>
<span class="nt">&lt;property</span> <span class="na">name=</span><span class="s">"strictMode"</span> <span class="na">value=</span><span class="s">"false"</span> <span class="nt">/&gt;</span>
<span class="nt">&lt;/properties&gt;</span>
<span class="nt">&lt;/rule&gt;</span>
</code></pre></div></div>
<h2 id="unusedlocalvariable">UnusedLocalVariable</h2>
<p><strong>Since:</strong> PMD 6.23.0</p>
<p><strong>Priority:</strong> Low (5)</p>
<p>Detects when a local variable is declared and/or assigned but not used.</p>
<p><strong>This rule is defined by the following Java class:</strong> <a href="https://github.com/pmd/pmd/blob/master/pmd-apex/src/main/java/net/sourceforge/pmd/lang/apex/rule/bestpractices/UnusedLocalVariableRule.java">net.sourceforge.pmd.lang.apex.rule.bestpractices.UnusedLocalVariableRule</a></p>
<p><strong>Example(s):</strong></p>
<div class="language-java highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="kd">public</span> <span class="nc">Boolean</span> <span class="nf">bar</span><span class="o">(</span><span class="nc">String</span> <span class="n">z</span><span class="o">)</span> <span class="o">{</span>
<span class="nc">String</span> <span class="n">x</span> <span class="o">=</span> <span class="err">'</span><span class="n">some</span> <span class="n">string</span><span class="err">'</span><span class="o">;</span> <span class="c1">// not used</span>
<span class="nc">String</span> <span class="n">y</span> <span class="o">=</span> <span class="err">'</span><span class="n">some</span> <span class="n">other</span> <span class="n">string</span><span class="err">'</span><span class="o">;</span> <span class="c1">// used in the next line</span>
<span class="k">return</span> <span class="n">z</span><span class="o">.</span><span class="na">equals</span><span class="o">(</span><span class="n">y</span><span class="o">);</span>
<span class="o">}</span>
</code></pre></div></div>
<p><strong>Use this rule by referencing it:</strong></p>
<div class="language-xml highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nt">&lt;rule</span> <span class="na">ref=</span><span class="s">"category/apex/bestpractices.xml/UnusedLocalVariable"</span> <span class="nt">/&gt;</span>
</code></pre></div></div>
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