PD1 Testing and Debugging 3

Question 1

Which Limits method returns the number of SOQL queries issued in the current transaction so far?

Accepted Answer

Limits.getQueries()

Answer

Limits.getQueries() returns the number of SOQL queries already consumed in the current transaction, while getLimitQueries() returns the maximum allowed.

Question 2

A developer wants to verify that a custom exception is thrown by a method. What is the correct test pattern in Apex?

Accepted Answer

Wrap the call in a try/catch and assert inside the catch block

Answer

Apex tests verify exceptions by wrapping the call in try/catch and using System.assert() inside the catch to confirm the expected exception type and message.

Question 3

What is the maximum size of a single debug log file in Salesforce?

Accepted Answer

20 MB

Answer

A single Apex debug log can be up to 20 MB; logs exceeding this size are truncated and older entries are removed from the beginning.

Question 4

In Apex, which method is used to register a mock implementation for a Callable interface during testing?

Accepted Answer

Callable stubs must be set via dependency injection, not Test.setMock

Answer

Callable mocks cannot be registered via Test.setMock(); they must be injected by passing the mock object directly to the class under test.

Question 5

When using the Developer Console's Checkpoint feature, what type of information can a developer inspect at a checkpoint line?

Accepted Answer

Variable values, heap contents, and iteration counts at that execution point

Answer

Checkpoints in the Developer Console capture a snapshot of heap contents, variable values, and execution counts at that specific line during a transaction.

(PD1) Salesforce Certified Platform Developer 1 Practice Test

(PD1) Salesforce Certified Platform Developer 1 Practice Test

PD1 Testing and Debugging 3