Test Coverage vs Code Coverage
Below are the differences between Test coverage and Code coverage:
Parameters | Test coverage | Code coverage |
---|---|---|
Definition | Test coverage is a measure of how much testing has been done on a particular piece of code. | Code coverage is a measure of how much code is covered by tests. |
Measures | It only measures testing. | It measures both testing and code. |
Various other levels | It can be measured at various levels, including statement coverage, branch coverage, and path coverage. | It can be measured at various levels, including line coverage, function coverage, and block coverage. |
Percentage of tests | It is often expressed as a percentage of the total number of tests that have been run. | It is often expressed as a percentage of the total number of lines of code that have been covered by tests. |
Increased | It can be increased by running more tests. | It can be increased by writing more tests. |
Decreased | It can be decreased by deleting tests. | It can be decreased by deleting code. |
Find Untested Code | It can be used to find untested code. | It can be used to find both untested and untestable code. |
Assess the Quality of Testing | It can be used to assess the quality of testing. | It can be used to assess the quality of both testing and code. |
Test Design Coverage in Software Testing
Test coverage is the degree to which a test or set of tests exercises a particular program or system. The more code that is covered by a test, the more confidence developers have that the code is free of bugs. Measuring test coverage can be difficult because it is often hard to determine what percentage of the code is actually being executed by a test. In general, however, the more code that is covered by a test, the better.
There are many different types of test coverage, but in general, test coverage is a measure of how much of the code or functionality of a system is being tested by a particular set of tests. For example, if a set of tests only covers 50% of the code, then it has 50% coverage. There are many different ways to measure test coverage, and the level of coverage that is considered acceptable varies from organization to organization. In some cases, 100% test coverage may be required, while in others, 80% may be considered adequate.
One way to think of test coverage is as a spectrum, with lower levels of coverage being less effective and higher levels being more effective. However, it is important to remember that no single level of coverage is right for all situations, and the level of coverage that is appropriate will depend on the specific system under test and the risks involved.