TEST class coverage for boolean method and exception messages

Question

Unable to cover the code coverage for the below boolean method any suggestions please i tried the below test class and checked logs, its not going inside exception catch block even though i tried to get an exception by making user inactive.am i not calling the method right?

• class: psController
• method:isPLUser

public static boolean isPLUser() {
    try{
        if (((user)currentUser).Contact.Account.Recordtypeid != Utility.partnerRecType){
            throw new pscUtility.pscException('01', ' Record type is not valid.'); 
        } else if (!((user)currentUser).isActive) {
            throw new pscUtility.pscException('03', 'Partner user is not active');
        } else {
            return true;
        }
    } catch(exception e) {
    }
    return false;

Test class:

User testUser = [SELECT Id,contact.id,isactive ,contact.account.id FROM User WHERE Profile.name = 'Partner Sales'and isactive = true LIMIT 1];
test.startTest();
boolean ispilot = pscMainController.isPLUser();
user u = pscMainController.getUserContext();
       
try{
    boolean ispilot2 = psController.isPLUser();
    testUser.IsActive = false;
} catch (DmlException ex) {
    system.assertEquals(ispilot, testUser.IsActive,'Partner user is not active' );
    System.assertEquals('Partner user is not active', ex.getMessage());
}          
test.stopTest();

Answer 1

Your testmethod needs to run in the context of a running user

// given an active user
User testU = [SELECT Id FROM User WHERE Profile.name = 'Partner Sales'and isactive = true LIMIT 1];
System.runAs(testU) {
   ... logic/asserts for active use case
}
// Given an inactive user
System.runAs(new User(Id = UserInfo.getUserId()) {
  update new User(Id = testU.Id,IsActive = false);
}
testU = [SELECT Id FROM User WHERE Id = :testU.Id LIMIT 1]; // refresh our context user
System.runAs(testU) {
   ... logic/asserts for inactive use case
}