[SalesForce] Schedulable Batch Apex – Create Tasks

I'm looking to run a scheduled apex batch class that will create a task on any Contact record that had a sales rep assigned to them 1 day ago that hasn't been emailed yet.

I've created 2 custom fields to filter the criteria above.. the date the Contact was assigned a sales rep Sales_Rep_Updated__c and a checkbox field that will be checked as soon as an Email task is completed, Welcome_Email_Sent__c

Here is my Schedulable Batch Class

global class Followup24Email Implements Schedulable, Database.Batchable<sObject>{
global void execute(SchedulableContext sc) {
    Database.executeBatch(this);
}

//This is the query that is passed to the execute method.  It queries all of the Contacts who have passed
String query = 'Select Id, AccountId, OwnerId, Sales_Rep_Updated__c FROM Contact WHERE Sales_Rep_Updated__c = YESTERDAY AND Welcome_Email_Sent__c = FALSE';

global database.queryLocator start(Database.BatchableContext BC) {
    return database.getQueryLocator(query);

} //close start method

global void execute(Database.BatchableContext BC, list <Contact> scope) {

    List <Task> taskList = new List<Task>();

    // Iterate through the whole query of Contacts
    // Create a Task that's associated with each Contact.
    for(Contact c : scope) {
            Task tsk             = new Task();
            tsk.OwnerId          = c.OwnerId;
            tsk.WhoId            = c.Id;
            tsk.WhatId           = c.AccountId;
            tsk.ActivityDate     = System.today();
            tsk.Status           = 'Open';
            tsk.Priority         = 'Normal';
            tsk.Subject          = 'Send Welcome Email';
            tsk.Description      = 'This Account was recently assigned to you, please send them a welcome email.';
            tsk.Type             = 'Email';
            tsk.IsReminderSet    = true;
            tsk.ReminderDateTime = System.now();

            taskList.add(tsk);
    } //close for-loop

    try {
        insert taskList;
    } catch (system.dmlexception e) {
        System.debug('Tasks not inserted: ' + e);
    }
} //close execute method

global void finish(Database.BatchableContext BC) {


} //close finish method
}

And here is my Test class – currently getting 92% (24/26) code coverage

@isTest
private class Followup24EmailTest {

static testMethod void TestFollowup24Email() {

// User Id's for the two sales managers.
String aId = '00561000001DTdh';

List <Contact> contacts = new List <Contact>();
List <Task> tasks = new List <Task>();

// Create 50 Contacts

for (integer i=0; i<50; i++) {
Contact c = new Contact(FirstName='Test',
            LastName='Contact'+ i,
            Sales_Rep_Updated__c = Date.today().addDays(-1),
            Welcome_Email_Sent__c = false,
            OwnerId = aId);
contacts.add(c);

} //close for-loop

insert contacts;

Test.StartTest();

// Call the Batch Apex method.
Followup24Email fue = new Followup24Email();
ID batchprocessid = Database.executeBatch(fue);

Test.StopTest();

List<Task> taskResult = [SELECT ID From TASK];
System.debug('taskResult' + taskResult.size());
/*AsyncApexJob async = [Select Id, Status, NumberOfErrors, JobItemsProcessed,     TotalJobItems from AsyncApexJob where Id = :batchprocessid];
System.debug('Final results are ' + async);

System.AssertEquals(async.NumberOfErrors, 0);
System.AssertEquals([Select count() from Contact Where OwnerId=:aId AND    FirstName='Test'], 50);
System.AssertEquals([Select count() from Task Where Subject = 'Send Welcome    Email'], 50);*/

} //close testmethod

} //close Class

I've created a few test Accounts / Contacts with criteria that should fit (Welcome Email Sent = unchecked, and a Sales Rep Update date of yesterday) but no tasks are ever created.

Edit:

Here is what's not getting covered in my test

Any ideas? Thanks!