I cant get my test class to cover the code?

Question

I am trying to cover my class Api_Http_DealerProfileEmail_1 using a test class which covers some other classes too,for some reason it keeps on giving me 0% code coverage for the class. Here is the part of test class, I am using to cover my class. Can anyone please tell me whats wrong here. Thanks.

  private static void insertAndChangeAddress() {
    Integer r = Crypto.getRandomInteger();
    String rs = String.valueOf(r);
    String email = 'jb-'+rs+'@some.org';
    String newEmail = 'jb-'+rs+'@other.org';
    Id id;
    Id testId;

    User owner = [select Id, Name from User where Name = 'OEM Sales' limit 1];

    id = Api_Http_DealerRegister_0.postNewCustomer('JoeBloe','GM','12345',email,'1212 some place'
          ,'Bouler','CO','12121','US','3033539876','Joe','Bloe');
    System.assertNotEquals(null, id);

Account acct = [select Id, OwnerId,  Dealer_Email__c  from Account where Id = :id limit 1];
System.assertEquals(owner.Id, acct.OwnerId);
System.assertEquals(email, acct.Dealer_Email__c);

// Change the email address to a duplicate email address, and fail
Api_Result_0 result = Api_Http_DealerProfileEmail_1.setEmail(user1Email, newEmail);
System.assertEquals(false, result.success);

// Change the email address correctly now
result = Api_Http_DealerProfileEmail_1.setEmail(email, newEmail);
System.assertEquals(true, result.success);

// Make sure we can look up the account by the modified address
acct = [select Id, OwnerId,  Dealer_Email__c  from Account where  Dealer_Email__c  = :newEmail limit 1];
System.assertEquals(id, acct.Id);

// The same rename operation tried again should fail, because the original email no longer exists
result = Api_Http_DealerProfileEmail_1.setEmail(email, newEmail);
System.assertEquals(false, result.success);
}

private static void updateNoContactRecord() {
  String email = '[email protected]';
    RecordType customerType = [Select Id, Name, sObjectType 
        from RecordType
        where sObjectType = 'Account' and Name='Company OEM'
        limit 1
    ];

    Account acct = new Account();

    acct.RecordTypeId = customerType.Id;      
acct.Name = 'Joe Shmoe';
acct.ShippingStreet = '2234 Mercury Way';
acct.ShippingCity = 'Santa Rosa';
acct.ShippingState = 'CA';
acct.ShippingCountry = 'US';
acct.ShippingPostalCode = '94928';

    acct.Dealer_Email__c = email;
    acct.Type = 'Customer';

    insert acct;

String encEmail = EncodingUtil.urlEncode(email, 'utf-8');
System.RestContext.request = new RestRequest();
RestContext.request.requestURI = '/Api/DealerProfile_0/' + encEmail;

Api_Result_0 result = Api_Http_DealerProfile_0.setProfile(
  'JaneShmoe',
  '1121 Some Other Place','Denver', 'CO', '12345', 'US', 
  '7075551212', 'Jane','Shmoe'
);

    Contact cont = [select Id, Email, Name, FirstName, LastName, MailingStreet, MailingCity, MailingState, 
      MailingCountry, MailingPostalCode from Contact where email = :email limit 1];
    System.assertNotEquals(null, cont);
    System.assertEquals(email, cont.Email);
    System.assertEquals('Shmoe', cont.LastName);
}

private static void readdressNoContactRecord() {
  String email = '[email protected]';
  String newEmail = '[email protected]';
  Contact cont;

    RecordType customerType = [Select Id, Name, sObjectType 
        from RecordType
        where sObjectType = 'Account' and Name='Subscriber(new)'
        limit 1
    ];

    Account acct = new Account();

    acct.RecordTypeId = customerType.Id;      
acct.Name = 'Pliny A Younger';
acct.ShippingStreet = '2234 Mercury Way';
acct.ShippingCity = 'Santa Rosa';
acct.ShippingState = 'CA';
acct.ShippingCountry = 'US';
acct.ShippingPostalCode = '94928';

    acct.Dealer_Email__c = email;
    acct.Type = 'Customer';

    insert acct;

Api_Result_0 result = Api_Http_DealerProfileEmail_1.setEmail(email, newEmail);
    System.assertEquals(true, result.success);

    // make sure we can't retrieve the original contact
    try {
      cont = [select Id from Contact where email = :email limit 1];
      System.assert(false, 'We should not be able to retrieve the contact by the old email.');
    } catch (QueryException qex) {

    }

    cont = [select Id, Email, Name, FirstName, LastName, MailingStreet, MailingCity, MailingState, 
      MailingCountry, MailingPostalCode from Contact where email = :newEmail limit 1];
    System.assertNotEquals(null, cont);
    System.assertEquals(newEmail, cont.Email);
    System.assertEquals('Younger', cont.LastName);
    System.assertEquals(acct.ShippingStreet, cont.MailingStreet);
    System.assertEquals(acct.ShippingPostalCode, cont.MailingPostalCode);

}

And my class is :

   @RestResource(urlMapping='/Api/DealerProfileEmail_1/*')
   global with sharing class Api_Http_DealerProfileEmail_1 {

  @HttpPost
  global static Api_Result_0 setEmail(
    String oldEmail,
    String newEmail
  ) {
    Api_Result_0 result = new Api_Result_0();

    try {
      Api_DealerProfile_0 profile = new Api_DealerProfile_0(oldEmail);

      profile.changeEmail(newEmail);
      result.success = true;
    } catch(Exception ex) {
      result.success = false;
      result.error = ex.getMessage();
    }
    return result;
  }
}

Answer 1

Test methods must be marked with @isTest or testMethod. Therefore, your tests aren't actually running. Just add @isTest before the function declarations.

@isTest static void insertAndChangeAddress() { ...

@isTest static void updateNoContactRecord() { ...

@isTest static void readdressNoContactRecord() { ...