Test classes run in a different context, i.e. a test class have no idea about the data stored in Salesforce, by setting seeAllData=true => @isTest (seeAllData = true) Enabling this attribute exposes the data from the database to the test class.
Full Answer
Does test code saved against Salesforce API have access to all data?
However, test code saved against Salesforce API version 23.0 or earlier has access to all data in the organization. Data visibility for tests is covered in more detail in the next section. Annotate your test class or test method with IsTest (SeeAllData= true) to open up data access to records in your organization.
Can I test existing organization data in Salesforce?
By default, existing organization data isn’t visible to test methods, with the exception of certain setup objects. You should create test data for your test methods whenever possible. However, test code saved against Salesforce API version 23.0 or earlier has access to all data in the organization.
What is test utility class in Salesforce?
Common test utility classes are public test classes that contain reusable code for test data creation. Use test setup methods (methods that are annotated with @testSetup) to create test records once and then access them in every test method in the test class.
What is testvisible annotation in Java?
TestVisible Annotation Use the TestVisible annotation to allow test methods to access private or protected members of another class outside the test class. These members include methods, member variables, and inner classes. This annotation enables a more permissive access level for running tests only.
How do you call a test class from another test class in Salesforce?
if you have common methods which you want to call in Test classes, you should create a utitliy class with @isTest anotation and define common methods their as public static, so it can be called in other test classes.
How can a test class access the private members of another class?
Use the TestVisible annotation to allow test methods to access private or protected members of another class outside the test class. These members include methods, member variables, and inner classes. This annotation enables a more permissive access level for running tests only.
Is test see all data?
The isTest(SeeAllData=true) annotation is used to open up data access when applied at the class or method level. However, using isTest(SeeAllData=false) on a method doesn't restrict organization data access for that method if the containing class has already been defined with the isTest(SeeAllData=true) annotation.
How do I run multiple test classes in Salesforce?
you can bundle them inside one Test Suites which can be run from Developer Console.In the Developer Console, select Test | New Suite.Enter a name for your test suite, and then click OK.Use the arrows to move classes between the Available Test Classes column and the Selected Test Classes column, and then click Save.More items...•
Which of the following allows to access private data of another class is?
In C++ there is a function called friend function, which allow us to access the private data of the class, A friend function of a class is defined outside that class' scope but it has the right to access all private and protected members of the class.
Can you access a private variable outside of its class?
No you cannot, by any means access the private variables in java.
What is test data in Salesforce?
What is Test Data? Test data is the transient data that is not committed to the database and is created by each test class to test the Apex code functionality for which it is created. Use of this transient test data makes it easy to test the functionality of other Apex classes and triggers.
What is test data factory in Salesforce?
The TestDataFactory class is a special type of class—it is a public class that is annotated with isTest and can be accessed only from a running test. Test utility classes contain methods that can be called by test methods to perform useful tasks, such as setting up test data.
How is TestSetup used in test class?
If a test class contains a test setup method, the testing framework executes the test setup method first, before any test method in the class. Records that are created in a test setup method are available to all test methods in the test class and are rolled back at the end of test class execution.
What is the purpose of test classes in Salesforce?
You write a test class to ensure that Apex Classes and triggers are working as expected, by testing it single and bulk record processing, for positive test cases and negative test cases. For this you also create the testing database.
What are the best practices for test class in Salesforce?
Salesforce Apex Test Class Best PracticesDo not put (seeAllData = true) in test class otherwise, use it for exceptional cases.Use @isTest at the Top for all the test classes.Test in bulk: Test to see if your code can run on 200 records at once.More items...
How do you run all test classes?
Run All Tests From Developer Console Go to Setup | Developer Console. From the developer console Click Test | Run All. All the tests will run and a breakdown of the code coverage in the bottom right of the screen with the overall Code coverage and per-class code coverage is shown.
What is Apex test data?
Apex test data is transient and isn’t committed to the database. This means that after a test method finishes execution, the data inserted by the test doesn’t persist in the database. As a result, there is no need to delete any test data at the conclusion of a test.
What is a common test utility class?
Common test utility classes are public test classes that contain reusable code for test data creation. Use test setup methods (methods that are annotated with @testSetup) to create test records once and then access them in every test method in the test class.