Test class coverage for custom label

Question

I have the following code where the intent is to log the details of the object only when the value of the custom label is true. This way I can control enabling logs from custom label settings. I do understand that there is also way to implement this through custom settings where we can define the data in test class. But wondering how do we cover the following code in test class if we were using custom label.

    if (Label.Enable_Log == 'True') {  //custom label
    //Initialize Log params
    logging goes in here
}

Answer 1

I have seen enough incorrect usage of labels for storing application settings that I am going to document an appropriate solution that uses a Hierarchy custom setting object to control application logic.

Hierarchy Custom Setting for Log Settings

<?xml version="1.0" encoding="UTF-8"?>
<CustomObject xmlns="http://soap.sforce.com/2006/04/metadata">
    <customSettingsType>Hierarchy</customSettingsType>
    <enableFeeds>false</enableFeeds>
    <fields>
        <fullName>Enable_Log__c</fullName>
        <defaultValue>false</defaultValue>
        <description>When checked, logging is enabled</description>
        <externalId>false</externalId>
        <label>Enable Logging</label>
        <trackTrending>false</trackTrending>
        <type>Checkbox</type>
    </fields>
    <label>Log Settings</label>
    <visibility>Public</visibility>
</CustomObject>

Your Class

// get the settings for the current user
LogSettings__c logSettings = LogSettings__c.getInstance();

// check the value and run if it has been enabled
if (logSettings.Enable_Log__c == true) {
    //Initialize Log params
    logging goes in here
}

Unit Test

static testMethod void yourTest(){ 

    // create the setting record to enable logging "org wide"
    LogSettings__c logSettings = LogSettings__c.getOrgDefaults();
    logSettings.Enable_Log__c = true;
    upsert logSettings;

    Test.startTest();

    // call your class and log some things

    Test.stopTest();

    // assert that your logger logged what you expected

}

Answer 2

You should receive following error by comparing label value and Boolean.

Comparison arguments must be compatible types: String, Boolean