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When to use public or private test classes in apex?
Test classes can be either private or public. If you’re using a test class for unit testing only, declare it as private. Public test classes are typically used for test data factory classes, which are covered later. Unit Test Example: Test the TemperatureConverter Class
How to convert a temperature to Celsius in apex?
The class method that’s being tested takes a temperature in Fahrenheit as an input. It converts this temperature to Celsius and returns the converted result. Let’s add the custom class and its test class. In the Developer Console, click File | New | Apex Class, and enter TemperatureConverter for the class name, and then click OK.
When to use static method in apex class?
A static method is used as a utility method, and it never depends on the value of an instance member variable. Because a static method is only associated with a class, it can’t access the instance member variable values of its class. Reference:- https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_classes_static.htm
How are temperature tests done in apex unit?
Each test method verifies one type of input: a warm temperature, the freezing point temperature, the boiling point temperature, and a negative temperature. The verifications are done by calling the System.assertEquals () method, which takes two parameters: the first is the expected value, and the second is the actual value.
How to define Unit test methods in apex?
Unit test methods take no arguments, commit no data to the database, and send no emails. Such methods are flagged with the @isTest annotation in the method definition. Unit test methods must be defined in test classes, that is, classes annotated with @isTest.
What happens to static member variable in apex?
If the value of a static member variable in a test class is changed in a testSetup or test method, the new value isn’t preserved. Other test methods in this class get the original value of the static member variable. This behavior also applies when the static member variable is defined in another class and accessed in test methods.
When do you delete test data in apex?
Since test methods don’t commit data created in the test, you don’t have to delete test data upon completion. If the value of a static member variable in a test class is changed in a testSetup or test method, the new value isn’t preserved. Other test methods in this class get the original value of the static member variable.