Today, Many QA engineers talk a lot about “test coverage,”
which gives a good overview of the quality of the product. However, to achieve
real quality, both code coverage and test coverage analysis must be considered.
For example, even if you reach 100 percent test coverage, you still need to aim
for at least 90 percent function code coverage to ensure the best results.
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t coverage is often confused with the Code Coverage.
Although both of the metrics are used to evaluate the quality of the
application code, code coverage is a term to describe what % of the application
code used when a user interacts with an application. On the other hand, Test
Coverage is testing each business requirement at least once and is a QA team
activity.
How to attain more Test Coverage in less time
Testers always run on a tight schedule and have to focus on
ensuring maximum coverage within the specified time primarily. There are a few
methods described below to achieve this –
Using Automation Tools
One of the modern software testing methods that any company
or testing group can adopt is the use of the right Automation Tool. There is
the number of tools on the market today to make life easy for testers.
Maintain Proper Checklist
Maintaining a correct checklist for each communication under
the given module can help to achieve efficient task coverage.
Prioritizing Requirements
Prioritizing requirements is one thing that is necessary to
achieve maximum test coverage in less time. Sort out the given requirements
into Simple, Medium, and Complex priorities that allow testers to focus
vigorously on their tasks. More focus should be on the new LIVE requirements in
the next release.
Impact Analysis
Identifying impacts in the initial builds and consequently
increasing the need for elimination of these impacts can help to achieve high
coverage in the upcoming builds.
Build Management
The test manager should keep track of all impacts and fixes
in the current build and ensure QA receive clean build with efficient repairs.
Test Coverage Metrics
Code coverage = (No. of lines of code exercised by the test
suites)/(total no. of lines of code)*100
Requirement coverage = [(Total no. of requirements) – (Total
no. of missed requirements)]/(Total no. of requirements)*100
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Test Coverage Best Practices
Sort business requirements/modules according to their
criticality, frequency of use and most complex workflows.
Develop a traceability matrix for the modules/requirements.
Use test coverage as a measure for “untested paths” instead
of “false sense of security.”
Develop automated suites using the frameworks integrated
with code coverage utilities.
Measure code coverage for each release and plan to improve
it with every subsequent release.
Utilize the metrics like ‘Defect density,’ ‘feature wise
defect distribution’ and ‘Defect removal efficiency’ as a guide to ensure the
improved coverage for the subsequent releases.
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Key benefits of Testing Coverage awareness for a Tester
Primarily helps to prioritize with the testing task.
Helps to achieve 100% requirement coverage.
Useful in determining the EXIT criteria.
Impacts Analysis becomes easier.
A test lead can also prepare a clear test closure report.
Concluding Test and Code Coverage
Test coverage does not end with the above contexts.
It’s not always true that when you test more, the results
are better. When you check more with no planned strategy, you probably will end
up investing a lot of time.
With a more structured approach, a 100% requirement coverage
and effective testing methods, you will not compromise the quality of the
product.
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