The test is used with a simple mileage tracking application. The existing code for the application verifies that not more than 500 miles are entered in a single day. The primary object is a custom object named Mileage__c. Here is the entire test class. The following sections step through specific portions of the code.
@isTest private class MileageTrackerTestSuite { static testMethod void runPositiveTestCases() { Double totalMiles = 0; final Double maxtotalMiles = 500; final Double singletotalMiles = 300; final Double u2Miles = 100; //Set up user User u1 = [SELECT Id FROM User WHERE Alias='auser']; //Run As U1 System.RunAs(u1){ System.debug('Inserting 300 miles... (single record validation)'); Mileage__c testMiles1 = new Mileage__c(Miles__c = 300, Date__c = System.today()); insert testMiles1; //Validate single insert for(Mileage__c m:[SELECT miles__c FROM Mileage__c WHERE CreatedDate = TODAY and CreatedById = :u1.id and miles__c != null]) { totalMiles += m.miles__c; } System.assertEquals(singletotalMiles, totalMiles); //Bulk validation totalMiles = 0; System.debug('Inserting 200 mileage records... (bulk validation)'); List<Mileage__c> testMiles2 = new List<Mileage__c>(); for(integer i=0; i<200; i++) { testMiles2.add( new Mileage__c(Miles__c = 1, Date__c = System.today()) ); } insert testMiles2; for(Mileage__c m:[SELECT miles__c FROM Mileage__c WHERE CreatedDate = TODAY and CreatedById = :u1.Id and miles__c != null]) { totalMiles += m.miles__c; } System.assertEquals(maxtotalMiles, totalMiles); }//end RunAs(u1) //Validate additional user: totalMiles = 0; //Setup RunAs User u2 = [SELECT Id FROM User WHERE Alias='tuser']; System.RunAs(u2){ Mileage__c testMiles3 = new Mileage__c(Miles__c = 100, Date__c = System.today()); insert testMiles3; for(Mileage__c m:[SELECT miles__c FROM Mileage__c WHERE CreatedDate = TODAY and CreatedById = :u2.Id and miles__c != null]) { totalMiles += m.miles__c; } //Validate System.assertEquals(u2Miles, totalMiles); } //System.RunAs(u2) } // runPositiveTestCases() static testMethod void runNegativeTestCases() { User u3 = [SELECT Id FROM User WHERE Alias='tuser']; System.RunAs(u3){ System.debug('Inserting a record with 501 miles... (negative test case)'); Mileage__c testMiles3 = new Mileage__c( Miles__c = 501, Date__c = System.today() ); try { insert testMiles3; } catch (DmlException e) { //Assert Error Message System.assert( e.getMessage().contains('Insert failed. First exception on ' + 'row 0; first error: FIELD_CUSTOM_VALIDATION_EXCEPTION, ' + 'Mileage request exceeds daily limit(500): [Miles__c]'), e.getMessage() ); //Assert field System.assertEquals(Mileage__c.Miles__c, e.getDmlFields(0)[0]); //Assert Status Code System.assertEquals('FIELD_CUSTOM_VALIDATION_EXCEPTION' , e.getDmlStatusCode(0) ); } //catch } //RunAs(u3) } // runNegativeTestCases() } // class MileageTrackerTestSuite
The following steps through the above code, in particular, the positive test case for single and multiple records.
System.debug('Inserting 300 more miles...single record validation');
Mileage__c testMiles1 = new Mileage__c(Miles__c = 300, Date__c = System.today() ); insert testMiles1;
for(Mileage__c m:[SELECT miles__c FROM Mileage__c WHERE CreatedDate = TODAY and CreatedById = :createdbyId and miles__c != null]) { totalMiles += m.miles__c; }
System.assertEquals(singletotalMiles, totalMiles);
totalMiles = 0;
System.debug('Inserting 200 Mileage records...bulk validation');
List<Mileage__c> testMiles2 = new List<Mileage__c>(); for(Integer i=0; i<200; i++){ testMiles2.add( new Mileage__c(Miles__c = 1, Date__c = System.today()) ); } insert testMiles2;
for(Mileage__c m:[SELECT miles__c FROM Mileage__c WHERE CreatedDate = TODAY and CreatedById = :CreatedbyId and miles__c != null]) { totalMiles += m.miles__c; } System.assertEquals(maxtotalMiles, totalMiles);
The following steps through the above code, in particular, the negative test case.
static testMethod void runNegativeTestCases(){
System.debug('Inserting 501 miles... negative test case');
Mileage__c testMiles3 = new Mileage__c(Miles__c = 501, Date__c = System.today());
try { insert testMiles3; } catch (DmlException e) {
//Assert Error Message System.assert(e.getMessage().contains('Insert failed. First exception '+ 'on row 0; first error: FIELD_CUSTOM_VALIDATION_EXCEPTION, '+ 'Mileage request exceeds daily limit(500): [Miles__c]'), e.getMessage()); //Assert Field System.assertEquals(Mileage__c.Miles__c, e.getDmlFields(0)[0]); //Assert Status Code System.assertEquals('FIELD_CUSTOM_VALIDATION_EXCEPTION' , e.getDmlStatusCode(0)); } } }
The following steps through the above code, in particular, running as a second user.
totalMiles = 0;
User u2 = [SELECT Id FROM User WHERE Alias='tuser'];
System.RunAs(u2){
System.debug('Setting up testing - deleting any mileage records for ' + UserInfo.getUserName() + ' from today');
Mileage__c testMiles3 = new Mileage__c(Miles__c = 100, Date__c = System.today()); insert testMiles3;
for(Mileage__c m:[SELECT miles__c FROM Mileage__c WHERE CreatedDate = TODAY and CreatedById = :u2.Id and miles__c != null]) { totalMiles += m.miles__c; }
System.assertEquals(u2Miles, totalMiles);