2results about How to "Won't change" patented technology

The application provides a test case automatic generation system based on mutation, which analyzes initial test cases, obtains corresponding component structures and field type information according to case subnode data obtained through analysis, and generates new test cases by applying mutation operations with correct semantics according to the type of corresponding subnode data, thus solving the problem that mutation operations damage the format of test cases and cannot generate effective test cases. Meanwhile, the application uses randomization and semantic-based mutation, adopts corresponding semantic mutation strategies according to the type of data, enhances the pertinence and effectiveness of generated test cases, enhances the difference and richness of generated test cases through randomization mutation strategies, and adopts a plurality of mutation strategies designed according to the characteristics of XML and JSON formats, so as to eliminate the difference of XML and JSON format test case generation tasks from different sources to the greatest extent and enhance the universality of the test case generation method.

The present invention relates to the field of communications. A method for generating a Cn value by a generic mapping procedure (GMP) mapping in an optical transport network (OTN), the method comprising: in each cycle, counting rate information statistical values of an opposite-end signal and a local low-order ODU signal, respectively; starting from the second cycle, producing a difference value in each cycle; comparing the difference of each cycle and a filter result of a previous cycle, to obtain a filter difference; amplifying the filter difference to a pre-configured filter coefficient times to acquire an adjustment value; accumulating the adjustment value of each cycle and the adjustment value of the previous cycle to acquire an integral value; when the integral value of one cycle is greater than 255, the filter value is 1, and the Cn value of the cycle = nominal Cn value + filter value; otherwise, the filter value is 0, and the Cn value of the cycle = nominal Cn value. According to the present invention, the circuit consumes a small amount of resource, and the circuit structure will not change due to changes to the mapping object, thus reducing jittering of the Cn value.