Introduction

Code coverage is used to determine which lines/pieces of code (or areas of a program) are not tested or exercised by a set of specs. Code coverage ensures the effectiveness of your specs/test suite, and not the quality of your product. However, if coverage is high (that is, between 90 percent and 100 percent), product quality will certainly be good. A program with high code coverage is tested thoroughly and has a lower chance of having production bugs as compared to a program with low code coverage. In other words, code coverage helps to determine whether Jasmine specs are sufficient for a specific feature/functionality or if there is a need to develop more specs in order to increase the code coverage.

To measure what percentage of code has been exercised by the specs/test suite, one or more coverage criteria/metrics are used. The major ones are statement coverage, function coverage, branch coverage, and condition coverage. To get more details about code coverage, you can visit...