
You can use try-catch inside a test class, and this is how you can test a class which you have written and that will throw an exception. Like if your class includes something like this if (aSomeTestCondition == true) { } else { Exception e = new myClassException (); e.setMessage ('Incorrect aSomeTestCondition'); throw e;
Full Answer
How do I assert an exception is thrown in Salesforce?
Assert that an exception is thrown and that the exception message is the same one you created with ' addError ()'. MyRecord. MyField = a value that will cause an error ; throw new MyException (' An exception should have been thrown by the trigger but was not .');
How do I add an exception to a test class?
a. Write code in the test class that will cause the trigger to ' addError ()'. b. Surround the above test class code with try - catch. c . Assert that an exception is thrown and that the exception message is the same one you created with ' addError ()'. MyRecord.
How to throw an exception from a trigger?
I think you need an entry point from were you can throw an exception from your trigger. Add something like this in your trigger code and try to cover trigger with appropriate data and you will be done. Show activity on this post. Ideally you would write a test purely for your exception class that constructed it and asserted its behaviour.
How to throw a DML exception in test data?
A DML Exception will be thrown and catch block would be covered. So you need to modify your test data accordingly. Show activity on this post. The easiest way to intentionally throw DML exception is insert record without setting required field. Any problem with a DML statement, such as an insert statement missing a required field on a record.

How do I cover an exception in test class in Salesforce?
To cover the exception, you would need to manufacture the situation where the insert of the ERT_Case_Type__c would fail. For example, are there any validation rules that you could force the record to evaluate? Or create a runAs user who does not have access to insert the ERT_Case_Type__c record.
How do you assert exceptions in test class?
Another method is to use a try/catch block in your apex test class to assert that an exception has been thrown. We can modify the code above to use a try-catch block instead of Database. SaveResult(). Both these methods can be used to assert that an exception was thrown although personally, I prefer using Database.
Can we use try catch in test class salesforce?
You can use try-catch inside a test class, and this is how you can test a class which you have written and that will throw an exception.
How do you throw an exception in Apex?
You can't throw built-in Apex exceptions. You can only catch them. But with custom exceptions, you can throw and catch them in your methods. Custom exceptions enable you to specify detailed error messages and have more custom error handling in your catch blocks.
How do you Assert throw exception?
EqualTo("Actual exception message")); So if no exception is thrown, or an exception of the wrong type is thrown, the first Assert. Throws assertion will fail. However if an exception of the correct type is thrown then you can now assert on the actual exception that you've saved in the variable.
How do you test an exception in unit testing?
Test for Exceptions using xUnit Throws
How do I cover an exception in JUnit test class?
Test Exception in JUnit 5 - using assertThrows() method You put the code that can throw exception in the execute() method of an Executable type - Executable is a functional interface defined by JUnit. The message is optional, to be included in the error message printed when the test fails.
How do you cover a catch block in test class for batch class?
To cover the catch block you have to throw the exception in your test class. Sample for the callout exception.
What is script thrown exception?
Users are getting SCRIPT THROWN EXCEPTION error when initially logging into FSA. The error also occurs when doing a Reset App in FSA windows. Outline in what instances this known issue is encountered. This is a rich text field with the ability to format text, import images and reference external content through links.
How do you handle exceptions in Apex class?
Apex uses the try, catch, and finally block to handle an exception. You “try” to run your code and if an exception occurs you catch it and write the code to handle it in the “catch” block. You write the code that must execute whether an exception occurs or not in the final block.
How do I add exceptions to a Salesforce flow?
15:2337:48Flows Exception Logging Using Fault Connectors & Platform EventsYouTubeStart of suggested clipEnd of suggested clipSo select flow here. And select the fault. Message. This is done connect this to throw exception.MoreSo select flow here. And select the fault. Message. This is done connect this to throw exception. Save as a new version. Activate it let us go back.
How do you throw a flow error in Salesforce?
If the flow is used only internally, such as at a call center, use the fault path to display the error message to the running user. In the same Screen element, ask the user to report the error to the IT department. To do so, draw the fault connector to a Screen element with this Display Text field.