can someone help me to cover code 100%. I'm getting 66% for my test class.
Apex class:
global class ValidateBusinessHours implements Process.Plugin { 

global Process.PluginResult invoke(Process.PluginRequest request) { 
        
        DateTime dt = (DateTime) request.inputParameters.get('dt');
        
        BusinessHours bh = [SELECT Id,name FROM BusinessHours WHERE Name='Zelle Flow' limit 1];
        System.debug('Business Hours:'+bh);
        System.debug('Current Date Time'+dt);
        System.debug('Current Date time is in Business hours::'+BusinessHours.isWithin(bh.id, dt));
        Map<String,boolean> result = new Map<String,boolean>(); 
        result.put('value',BusinessHours.isWithin(bh.id, dt));
        return new Process.PluginResult(result);
    } 

    // Returns the describe information for the interface
    global Process.PluginDescribeResult describe() { 
        Process.PluginDescribeResult result = new Process.PluginDescribeResult(); 
        result.Name = 'businessHoursplugin';
        result.Tag = 'BusinessHours';
        result.inputParameters = new 
           List<Process.PluginDescribeResult.InputParameter>{ 
               new Process.PluginDescribeResult.InputParameter('dt', 
               Process.PluginDescribeResult.ParameterType.DateTime, true)
            };
         result.outputParameters = new 
           List<Process.PluginDescribeResult.OutputParameter>{
            new Process.PluginDescribeResult.OutputParameter(
                'value', 
                Process.PluginDescribeResult.ParameterType.boolean)
           };     
        return result; 
    }
}




Test Class:

@isTest
private class ValidateBusinessHours_Test{
  @testSetup
  static void setupTestData(){
    test.startTest();
    BusinessHours businesshours_Obj = new BusinessHours(Name = 'Name220', IsActive = true, IsDefault = false, TimeZoneSidKey = 'Pacific/Kiritimati');
    test.stopTest();
  }
  static testMethod void test_PluginRequest_UseCase1(){
    List<BusinessHours> businesshours_Obj  =  [SELECT Id,Name from BusinessHours];
    System.assertEquals(true,businesshours_Obj.size()>0);
    ValidateBusinessHours obj01 = new ValidateBusinessHours();
    //obj01.PluginRequest(new Process.PluginRequest());
    
  }
  static testMethod void test_describe_UseCase1(){
    List<BusinessHours> businesshours_Obj  =  [SELECT Id,Name from BusinessHours];
    System.assertEquals(true,businesshours_Obj.size()>0);
    ValidateBusinessHours obj01 = new ValidateBusinessHours();
    obj01.describe();
  }

    static testMethod void test_describe_UseCase2(){
    List<BusinessHours> businesshours_Obj  =  [SELECT Id,Name from BusinessHours];
    System.assertEquals(true,businesshours_Obj.size()>0);
    ValidateBusinessHours obj01 = new ValidateBusinessHours();
    //businesshours_Obj[0].id='';
    businesshours_Obj[0].Name='hgvhv';
    obj01.describe();
  }
}