@isTest
public class PagingDemoWithAlpabetsTest {
  

  /**
    This method tests Searching functionality of AlphabeticSearchExtension.
    @return Nothing.
   */
  @isTest 
  public static void testSearch() {
    PageReference pageRef = Page.ContactAlphaSearch;
    Contact contactObject = new Contact(LastName='Eternus');
    ApexPages.StandardController StandardControllerObject = new ApexPages.StandardController(contactObject);
    PagingDemoWithAlpabets alpabetsTestObject = new PagingDemoWithAlpabets(StandardControllerObject);
    PagingDemoWithAlpabets.SearchVar = 'A';

    pageRef.getParameters().put('Alphabet','T');
   // Test.setCurrentPage(pageRef);

    System.Test.startTest();
    PagingDemoWithAlpabets.display();
    System.Test.stopTest();

    System.assertEquals(0,size, 
      'PagingDemoWithAlpabets Failed for Searching');
  }

  /**
    This method tests Searching functionality of AlphabeticSearchExtension for Alphabets.
    @return Nothing.
   */
   
  @isTest static void testSearchAlpha() {
    PageReference pageRef = Page.ContactAlphaSearch;
    pageRef.getParameters().put('Alphabet','A');
    Test.setCurrentPage(pageRef);
    AlphabeticSearchExtension searchExtension = new AlphabeticSearchExtension();

    Test.startTest();
    searchExtension.search();
    Test.stopTest();

    System.assertEquals(searchExtension.renderTable, false, 
      'AlphabeticSearchExtension Failed for Searching A characher');
  }

  /**
    This method tests Searching functionality of AlphabeticSearchExtension for No parameter.
    @return Nothing.
   */
  @isTest static void testSearchNoParam() {
    PageReference pageRef = Page.ContactAlphaSearch;
    Test.setCurrentPage(pageRef);
    AlphabeticSearchExtension searchExtension = new AlphabeticSearchExtension();

    Test.startTest();
    searchExtension.search();
    Test.stopTest();

    System.assertEquals(searchExtension.renderTable, false, 
      'AlphabeticSearchExtension Failed for Searching  No parameter');
  }

  /**
    This method tests Searching functionality of AlphabeticSearchExtension for All character.
    @return Nothing.
   */
  @isTest static void testSearchAll() {
    PageReference pageRef = Page.ContactAlphaSearch;
    pageRef.getParameters().put('Alphabet','All');
    Test.setCurrentPage(pageRef);
    AlphabeticSearchExtension searchExtension = new AlphabeticSearchExtension();

    Test.startTest();
    searchExtension.search();
    Test.stopTest();

    System.assertEquals(searchExtension.renderTable, false, 
      'AlphabeticSearchExtension Failed for Searching All characher');
  }

  /**
    This method tests Searching functionality of AlphabeticSearchExtension for Other than Alphabets.
    @return Nothing.
   */
  @isTest static void testSearchOther() {
    PageReference pageRef = Page.ContactAlphaSearch;
    pageRef.getParameters().put('Alphabet','Other');
    Test.setCurrentPage(pageRef);
    AlphabeticSearchExtension searchExtension = new AlphabeticSearchExtension();

    Test.startTest();
    searchExtension.search();
    Test.stopTest();

    System.assertEquals(searchExtension.renderTable, false, 
      'AlphabeticSearchExtension Failed for Searching Other characher');
  }

  /**
    This method tests deletion functionality of AlphabeticSearchExtension.
    @return Nothing.
   */
  @isTest static void testDelete() {
    PageReference pageRef = Page.ContactAlphaSearch;
    List<Contact> contactRecord = TestDataFactory.createContact(1);
    insert contactRecord;
    Test.setCurrentPage(pageRef);

    Test.startTest();
    AlphabeticSearchExtension.deleteContact(contactRecord[0].id);
    Test.stopTest();

    contactRecord = [
      SELECT
        id
      FROM
        Contact
    ];

    System.assertEquals( contactRecord.size(), 0, 
      'AlphabeticSearchExtension Failed for Delete contact functionality.');
  }

}