Hello,

I have a custom wizard controller that is working and am trying to write a test case for it. I have a button that writes three parameters to querystring in the url.

Controller

public class osmController {

   // These member variables maintain the state of the wizard. 
   // When users enter data into the wizard, their input is stored 
   // in these variables.  
    
   Participant_Assessment__c pAsmt;
   Participant_Interaction__c pInt;
   Participant_Answer__c pAns1;
 ...
   private final Participant__c participant;
   private final Assessment__c assessment;
   private final Family__c family;
   string possibleanswer1 = null;
 ...

   // The next methods return one of each of the member 
   // variables. If this is the first time the method is called, 
   // it creates an empty record for the variable. 
      
   public List<selectOption> getanswer1() {
        List<selectOption> options = new List<selectOption>(); //new list for holding all of the picklist options       
        for (Possible_Answer__c pa1 : [SELECT Id, Answer_Display__c FROM Possible_Answer__c
         WHERE Dimension__c = 'Income']) { 
            options.add(new selectOption(pa1.Id, pa1.Answer_Display__c)); //for all records found - add them to the picklist options
        }
        return options; //return the picklist options
 ...
   public List<selectOption> getInteractiontypes() {
        List<selectOption> options = new List<selectOption>(); //new list for holding all of the picklist options        
        options.add(new selectOption('', '--None--')); //add the first option of '- None -' in case the user doesn't want to select a value or in case no values are returned from query below
        for (Interaction_Type__c Interactiontypes : [SELECT Id, Description__c FROM Interaction_Type__c WHERE IsDeleted = FALSE]) { 
            options.add(new selectOption(Interactiontypes.Description__c, Interactiontypes.Description__c)); //for all records found - add them to the picklist options
        }
        return options; //return the picklist options
    }
   
   public Participant_Assessment__c getpAsmt() {
      if(pAsmt == null) pAsmt = new Participant_Assessment__c();
      return pAsmt;
   }
   
   public Participant_Interaction__c getpInt() {
      if(pInt == null) pInt = new Participant_Interaction__c();
      return pInt;
   }
   
   public Participant_Answer__c  getpAns1() {
      if(pAns1 == null) pAns1 = new Participant_Answer__c();
      return pAns1;
   }
   public Participant_Answer__c  getpAns2() {
      if(pAns2 == null) pAns2 = new Participant_Answer__c();
      return pAns2;
   }
   public Participant_Answer__c  getpAns3() {
      if(pAns3 == null) pAns3 = new Participant_Answer__c();
      return pAns3;
   }
   public Participant_Answer__c  getpAns4() {
      if(pAns4 == null) pAns4 = new Participant_Answer__c();
      return pAns4;
   }
   public Participant_Answer__c  getpAns5() {
      if(pAns5 == null) pAns5 = new Participant_Answer__c();
      return pAns5;
   }
   public Participant_Answer__c  getpAns6() {
      if(pAns6 == null) pAns6 = new Participant_Answer__c();
      return pAns6;
   }
   public Participant_Answer__c  getpAns7() {
      if(pAns7 == null) pAns7 = new Participant_Answer__c();
      return pAns7;
   }
   public Participant_Answer__c  getpAns8() {
      if(pAns8 == null) pAns8 = new Participant_Answer__c();
      return pAns8;
   }
   public Participant_Answer__c  getpAns9() {
      if(pAns9 == null) pAns9 = new Participant_Answer__c();
      return pAns9;
   }
   public Participant_Answer__c  getpAns10() {
      if(pAns10 == null) pAns10 = new Participant_Answer__c();
      return pAns10;
   }
   public Participant_Answer__c  getpAns11() {
      if(pAns11 == null) pAns11 = new Participant_Answer__c();
      return pAns11;
   }
   public Participant_Answer__c  getpAns12() {
      if(pAns12 == null) pAns12 = new Participant_Answer__c();
      return pAns12;
   }
   public Participant_Answer__c  getpAns13() {
      if(pAns13 == null) pAns13 = new Participant_Answer__c();
      return pAns13;
   }
   public Participant_Answer__c  getpAns14() {
      if(pAns14 == null) pAns14 = new Participant_Answer__c();
      return pAns14;
   }
   public Participant_Answer__c  getpAns15() {
      if(pAns15 == null) pAns15 = new Participant_Answer__c();
      return pAns15;
   }
   public Participant_Answer__c  getpAns16() {
      if(pAns16 == null) pAns16 = new Participant_Answer__c();
      return pAns16;
   }
   public Participant_Answer__c  getpAns17() {
      if(pAns17 == null) pAns17 = new Participant_Answer__c();
      return pAns17;
   }
   public Participant_Answer__c  getpAns18() {
      if(pAns18 == null) pAns18 = new Participant_Answer__c();
      return pAns18;
   }
   
   public Participant__c getParticipant() {
            return participant;
   }
   
   public Assessment__c getAssessment() {
            return assessment;
   } 
   
   public Family__c getFamily() {
            return family;
   }   
   
   public osmController() {

            if (ApexPages.currentPage().getParameters().get('family') == '') {
            	//do nothing
            } else {
            	participant = [select id, name from Participant__c where id =  <================GETTING ERROR HERE
                       :ApexPages.currentPage().getParameters().get('id')];
            }
            assessment = [select id, name from Assessment__c where Name = 
                       :ApexPages.currentPage().getParameters().get('asmt') AND
                       Version__c = :ApexPages.currentPage().getParameters().get('version')];
                       
            if (ApexPages.currentPage().getParameters().get('family') == '') {
            	//do nothing
            } else {
            	family = [select id, name, Poverty_Level_2012__c from Family__c where name = 
                                         :ApexPages.currentPage().getParameters().get('family')];
            }              
   }
    
   public String getpossibleanswer1() {
            return possibleanswer1;
   }   
   public String getpossibleanswer2() {
            return possibleanswer2;
   }
   public String getpossibleanswer3() {
            return possibleanswer3;
   }   
   public String getpossibleanswer4() {
            return possibleanswer4;
   }   
   public String getpossibleanswer5() {
            return possibleanswer5;
   }   
   public String getpossibleanswer6() {
            return possibleanswer6;
   }   
   public String getpossibleanswer7() {
            return possibleanswer7;
   }   
   public String getpossibleanswer8() {
            return possibleanswer8;
   }   
   public String getpossibleanswer9() {
            return possibleanswer9;
   }   
   public String getpossibleanswer10() {
            return possibleanswer10;
   }   
   public String getpossibleanswer11() {
            return possibleanswer11;
   }   
   public String getpossibleanswer12() {
            return possibleanswer12;
   }   
   public String getpossibleanswer13() {
            return possibleanswer13;
   }   
   public String getpossibleanswer14() {
            return possibleanswer14;
   }   
   public String getpossibleanswer15() {
            return possibleanswer15;
   }   
   public String getpossibleanswer16() {
            return possibleanswer16;
   }   
   public String getpossibleanswer17() {
            return possibleanswer17;
   }   
   public String getpossibleanswer18() {
            return possibleanswer18;
   }      
   
   public void setpossibleanswer1(String possibleanswer1) { this.possibleanswer1 = possibleanswer1; }
   public void setpossibleanswer2(String possibleanswer2) { this.possibleanswer2 = possibleanswer2; }
   public void setpossibleanswer3(String possibleanswer3) { this.possibleanswer3 = possibleanswer3; }
   public void setpossibleanswer4(String possibleanswer4) { this.possibleanswer4 = possibleanswer4; }
   public void setpossibleanswer5(String possibleanswer5) { this.possibleanswer5 = possibleanswer5; }
   public void setpossibleanswer6(String possibleanswer6) { this.possibleanswer6 = possibleanswer6; }
   public void setpossibleanswer7(String possibleanswer7) { this.possibleanswer7 = possibleanswer7; }
   public void setpossibleanswer8(String possibleanswer8) { this.possibleanswer8 = possibleanswer8; }
   public void setpossibleanswer9(String possibleanswer9) { this.possibleanswer9 = possibleanswer9; }
   public void setpossibleanswer10(String possibleanswer10) { this.possibleanswer10 = possibleanswer10; }
   public void setpossibleanswer11(String possibleanswer11) { this.possibleanswer11 = possibleanswer11; }
   public void setpossibleanswer12(String possibleanswer12) { this.possibleanswer12 = possibleanswer12; }
   public void setpossibleanswer13(String possibleanswer13) { this.possibleanswer13 = possibleanswer13; }
   public void setpossibleanswer14(String possibleanswer14) { this.possibleanswer14 = possibleanswer14; }
   public void setpossibleanswer15(String possibleanswer15) { this.possibleanswer15 = possibleanswer15; }
   public void setpossibleanswer16(String possibleanswer16) { this.possibleanswer16 = possibleanswer16; }
   public void setpossibleanswer17(String possibleanswer17) { this.possibleanswer17 = possibleanswer17; }
   public void setpossibleanswer18(String possibleanswer18) { this.possibleanswer18 = possibleanswer18; }
   


   // The next methods control navigation through 
   // the wizard. Each returns a PageReference for one of the pages 
   // in the wizard. Note that the redirect attribute does not need to 
   // be set on the PageReference because the URL does not need to change 
   // when users move from page to page. 
    
   public PageReference step1() {
      return Page.osmStep1;
   }
   public PageReference step2() {
      return Page.osmStep2;
   }
   public PageReference step3() {
      return Page.osmStep3;
   }
   public PageReference step4() {
      return Page.osmStep4;
   }
   public PageReference step5() {
      return Page.osmStep5;
   }
   public PageReference step6() {
      return Page.osmStep6;
   }
   public PageReference step7() {
      return Page.osmStep7;
   }
   public PageReference step8() {
      return Page.osmStep8;
   }
   public PageReference step9() {
      return Page.osmStep9;
   }
   
   // This method cancels the wizard, and returns the user to the  
   // Participants tab 
    
    public PageReference cancel() {
            PageReference participantPage = new ApexPages.StandardController(participant).view();
            participantPage.setRedirect(true);
            return participantPage; 
    }
    
   // This method performs the final save for all objects, and 
   // then navigates the user to the detail page for the new 
   // participant assessment. 
    
   public PageReference save() {
          PageReference p = null;
          
          if (this.family == null || this.participant == null || this.assessment == null) {
          	p = Page.failure;
          	p.getParameters().put('error','noParam');
          } else {
          	try {
          		// Create the participant assessment. Before inserting, use the id field 
          // from the active participant and assessment that are passed via custom button to create 
          // the relationship between the participant and assessment and the participant assessment. 
        
          pAsmt.Participant__c = participant.id;
          pAsmt.Assessment__c = assessment.id;
          insert pAsmt;
    
          // Create the participant answers. Before inserting, use the id field 
          // that's created once the participant assessment is inserted to create 
          // the relationship between the participant assessment and the participant answer. 
          
          pAns1.Participant_Assessment__c = pAsmt.id;
          pAns1.Possible_Answer__c = possibleanswer1;
          insert pAns1;
          pAns2.Participant_Assessment__c = pAsmt.id;
          pAns2.Possible_Answer__c = possibleanswer2;
          insert pAns2;
          pAns3.Participant_Assessment__c = pAsmt.id;
          pAns3.Possible_Answer__c = possibleanswer3;
          insert pAns3;
          pAns4.Participant_Assessment__c = pAsmt.id;
          pAns4.Possible_Answer__c = possibleanswer4;
          insert pAns4;
          pAns5.Participant_Assessment__c = pAsmt.id;
          pAns5.Possible_Answer__c = possibleanswer5;
          insert pAns5;
          pAns6.Participant_Assessment__c = pAsmt.id;
          pAns6.Possible_Answer__c = possibleanswer6;
          insert pAns6;
          pAns7.Participant_Assessment__c = pAsmt.id;
          pAns7.Possible_Answer__c = possibleanswer7;
          insert pAns7;
          pAns8.Participant_Assessment__c = pAsmt.id;
          pAns8.Possible_Answer__c = possibleanswer8;
          insert pAns8;
          pAns9.Participant_Assessment__c = pAsmt.id;
          pAns9.Possible_Answer__c = possibleanswer9;
          insert pAns9;
          pAns10.Participant_Assessment__c = pAsmt.id;
          pAns10.Possible_Answer__c = possibleanswer10;
          insert pAns10;
          pAns11.Participant_Assessment__c = pAsmt.id;
          pAns11.Possible_Answer__c = possibleanswer11;
          insert pAns11;
          pAns12.Participant_Assessment__c = pAsmt.id;
          pAns12.Possible_Answer__c = possibleanswer12;
          insert pAns12;
          pAns13.Participant_Assessment__c = pAsmt.id;
          pAns13.Possible_Answer__c = possibleanswer13;
          insert pAns13;
          pAns14.Participant_Assessment__c = pAsmt.id;
          pAns14.Possible_Answer__c = possibleanswer14;
          insert pAns14;
          pAns15.Participant_Assessment__c = pAsmt.id;
          pAns15.Possible_Answer__c = possibleanswer15;
          insert pAns15;
          pAns16.Participant_Assessment__c = pAsmt.id;
          pAns16.Possible_Answer__c = possibleanswer16;
          insert pAns16;
          pAns17.Participant_Assessment__c = pAsmt.id;
          pAns17.Possible_Answer__c = possibleanswer17;
          insert pAns17;
          pAns18.Participant_Assessment__c = pAsmt.id;
          pAns18.Possible_Answer__c = possibleanswer18;
          insert pAns18;
          
          //create participant interaction for OSM completion
          pInt.Interaction_Date__c = pAsmt.Assessment_Date__c;
          pInt.Interaction_Summary__c = 'OSM Completed';
          pInt.Participant__c = participant.id;
          insert pInt;
          	} catch (Exception e) {
          		p = Page.failure;
          		p.getParameters().put('error','noInsert');
          	}
          }
          
          if (p == null) {
          	p = new ApexPages.StandardController(pAsmt).view();
          }
          p.setRedirect(true);
          return p;
      }
}

The test method, which tells me the controller is hitting exception: "List has no rows for assignment to sObject" on line 307 which I marked in the above controller code...

@isTest
public class TestosmController {
	
    public static testMethod void myUnitTest(){
        
        PageReference pageRef1 = Page.osmStep1;
        Test.setCurrentPage(pageRef1);
        
        osmController controller = new osmController();
        String savePage = controller.save().getUrl();
        
        // verify that page fails without parameters
        System.assertEquals('/apex/failure?error=noParam', savePage);
        
        
        Profile pf = [Select Id from Profile where Name = 'Sys Admin'];

        User u = new User();
        u.FirstName = 'Test';
        u.LastName = 'User';
        u.Email = 'testuser@test123456789.com';
        u.CompanyName = 'test.com';
        u.Title = 'Test User';
        u.Username = 'testuser@test123456789.com';
        u.Alias = 'testuser';
        u.CommunityNickname = 'Test User';
        u.TimeZoneSidKey = 'America/Mexico_City';
        u.LocaleSidKey = 'en_US';
        u.EmailEncodingKey = 'ISO-8859-1';
        u.ProfileId = pf.Id;
        u.LanguageLocaleKey = 'en_US';
        insert u;

        system.runAs(u){

            Family__c o = new Family__c();
            o.Family_Type__c = 'Other';
            insert o;

            system.assertEquals(o.Family_Income__c, null);

            //Test payments on insert
            Participant__c p1 = new Participant__c();
            p1.Family__c = o.Id;
            p1.First_Name__c = 'Testy';
            p1.Last_Name__c = 'Testoferson';
            p1.Social_Security_Number__c = '999999998';
            p1.Date_of_Birth__c = Date.newInstance(2000, 1, 1);
            p1.Disabled__c = 'No';
            p1.Education__c = 'Unknown';
            p1.Gender__c = 'Unknown';
            p1.Ethnicity__c = 'No Response';
            p1.Race__c = 'African American';
            p1.Primary_Language__c = 'Spanish';
            p1.Health_Insurance__c = 'Yes';
            p1.SSN_Status__c = 'Verified';
            p1.Food_Stamps__c = 'No';
            p1.Veteran_Code__c = 'No';
            p1.WIC__c = 'No';
            p1.Marital_Status__c = 'Single';
            insert p1;

        // Add parameters to page URL 
        ApexPages.currentPage().getParameters().put('id', p1.id);
                       
        }
    }
}

 I'm trying to insert the id of a freshly inserted participant into the query string parameter in my test method and it is still returning null, any idea what I'm doing wrong?

Thank you!