Testing on an application aims to check whether a program is running properly so that the program created will be a program that has good quality. The testing technique consists of Whitebox Testing and Blackbox Testing which are widely used by examiners is appropriate. Study the software that will be examined using Blackbox Testing is a best sales selection system consisting of 1 form that will be filled with sales data, as well as sales performance while in the company. The Best Sales Selection Application will be tested using Blackbox Testing where this test only aims to look the program is the same with the function desired by program without knowing the program code used. Types of testing of the various Blackbox methods one of which is the Equivalence Partitions used by the authors in this study. Equivalence Partitions technique is a test based on entering data on each form in the best sales selection system, each menu input will be tested and grouped according to function whether it is valid or invalid. So it is expected that with this test is the quality of the software produced in accordance with the expected function, and can provide benefits for the company.

Tourism is a very important sector for the development of a region and tourism is one of the means of promotion to introduce the beauty of nature and the uniqueness of the culture in the area. Including for Banyuwangi Regency which is one of the regencies in East Java Province. This regency has many objects or tourist destinations which are a mainstay and the development of the tourism sector must be accompanied by the development of information technology. Smartphone is one form of technological development and one of the most popular smartphone technology bases based on its operating system is Android.The use of android smartphones in the development of the world of tourism in the information technology era is important for the public and tourists to have knowledge about objects or tourist destinations that will be targeted. In supporting the needs of the tourism information system in Banyuwangi Regency, an Android-based application was created. An application on an android smartphone that suits the needs of travelers equipped with interesting features. This application contains information about tourist objects that are equipped with visual media such as pictures, videos and Google Maps facilities to facilitate in finding tourist locations that will be addressed by the public and tourists.

In this employee payroll application, if there is an error program there will be a loss for employees and the company. Losses for employees, if this application program error occurs then the salary reduction will experience delays due to the difficulty in the process of calculating employee salaries and employees will be late in receiving salaries. Losses for the company, if there is an error program in this application, the company will suffer losses if the employee wants a salary reduction quickly but the company cannot calculate quickly and accurately. In solving this problem, the authors use the black box testing method. Black box testing method is a test that sees the results of execution through test data and ensures the function of the software. Black box testing method has several testing techniques, namely Sample Testing, Boundary Value Analysis, Equivalence Partitions and others. From the testing techniques that have been mentioned, we use the Equivalence Partitions testing technique. Equivalence Partitions are tests that refer to data entry on the employee payroll application form, input will be tested and then put together based on the test function, both valid and invalid values. The expected results of this test are a payroll system for employees who are computerized, have standard rules in the process of developing the program so that it is easy to develop and maintain, and can minimize errors in processing salary calculations for employees.

The library application is used to help manage and document transaction activities in the library which include borrowing and repaying. Library applications must be free of errors, because if they contain errors can cause harm to providers, managers, or members of the library. To provide a guarantee that the library application is free from errors, testing needs to be done. Software testing is an activity aimed at finding and finding errors and bugs in an application, which aims to minimize the losses that occur due to system errors. In this study, the proposed library application testing is Black Box. Black Box Testing is a test based on the appearance (interface) and functions of the software itself and not from the source code of the program. Black Box Testing has several methods, one of which is Equivalence Partitions, the method we use for testing the software. Equivalence Partitions are methods that discuss valid or not entered into the software, and observe the accuracy of the input. So that the side of the error is known. The test results have proven that the library application that has been developed is error free and meets all the requirements set.

Sales application is a financial transaction application, if something goes wrong can be detrimental to the owner, buyer, and employee. Then it needs to be tested to ensure the quality of the resulting application. Testing is a verification process for assessing the quality of a software to see whether the software meets the expected process and direction or not. The process that is not optimal can cause inequality of data to be stored in a database. Applications that have been programmed in such a way must go through a process step to ensure the level of quality of the software itself. Examples of processes that can be said to be good if they have a chance of getting an unknown error. Of the several types of Black Box testing methods one of them is Boundary Value Analysis. The method tests the maximum and minimum number of digits to produce a valid value and is easy enough to test sales applications at PT Global Advindo. In the first stage carried out in this study is to identify the functionality to be processed, ensuring the maximum and minimum number of digits matches the specified order. The result of applying the method used is the quality of the software is in accordance with the function, and can be utilized properly by user.