Nowadays is unacceptable that software are developed without Software Testing, however many companies neglect this important discipline of Software Engineering, due to qualified resources available and your high cost during the development process. In order to show the importance of Software Test, will be held during this work the comparative analysis between the implementation of Unit Tests and Integration Tests over Web software developed as a case study. That way it will be possible to deliver related code developed on the two types of tests. For do the development the software with name KeepInShape, was used the guidelines in the book Domain Driven Design together with the frameworks Spring Boot, Spring Data and Hibernate. With the intention to also ensure the quality of Unit Testing and Integration Testing developed, was used technique of Default-Based Testing known as Mutant Analysis, making it possible to analyze qualitatively both test developed. In the same way, the SonarQube tool and the JaCoCo framework were used to ensure the quality and coverage of the code that was developed. Through this analysis it was possible to evaluate the applicability of Unit Tests and Integration Tests through the results obtained, highlighting their main advantages and disadvantages.