Information and computer technologies increasingly permeate everyday life, and education in this sense is NO exception. The development of information technology affects the teaching of mathematics. One of the ways of application of information technology in the teaching of mathematics is the testing of students. Assessment of students ' knowledge using tests "online" is a relatively new method of assessment and control of knowledge. It provides ample opportunities to modernise and streamline the learning process, but at the same time is controversial. The authors of this article try to answer the essential questions related to the implementation of the tests: how Serious are the students to run the tests? Does the objective test results and what to do to get them? The article discusses the main details of the testing - define the purpose of inspection, choosing the right form of question, question wording, evaluation and interpretation of results. The method Used in the work is the result of the analysis of the math test. Tests prepared by teachers of the Department of Engineering mathematics Riga Technical University and replace most of the homework assignments the first semester. The statistical data used in the work obtained from the results of testing students of the faculty of computer science and information technology in the first semester of the academic year 2017/2018. The results of the study show that students are more willing to run tests than the work written by hand and handed to the teacher. Preference tests, which require logical thinking, in comparison with topics that require time-consuming calculations. The test system also significantly facilitates the work of the teacher, as there is no checking of a large number of student works. The result can conclude that the effective teaching of mathematics involves implementing various teaching methods, however, correctly executed tests and the correct interpretation of their results in combination with other methods gives objective results.