Statement coverage is said to make sure that every statement in the code is executed at least once. Decision/branch coverage is said to
test that each branch/output of a decisions is tested
, i.e. all statements in both false/true branches will be executed.
What does branches mean in code coverage?
Branch coverage is
a metric that indicates whether all branches in a codebase are exercised by tests
. A “branch” is one of the possible execution paths the code can take after a decision statement—e.g., an if statement—gets evaluated. … A different metric can be at 100%, while branch coverage is lower.
What is branch coverage in testing?
Branch coverage is a testing method, which
aims to ensure that each one of the possible branch from each decision point is executed at least once
and thereby ensuring that all reachable code is executed.
What is a branch in branch coverage?
Branch coverage is a requirement that, for each branch in the program (e.g., if statements, loops),
each branch have been executed at least once during testing
. (It is sometimes also described as saying that each branch condition must have been true at least once and false at least once during testing.)
What is the difference between decision coverage and branch coverage?
As ISTQB Foundation book gives, branch coverage is closely related to decision coverage and at 100% coverage they give exactly the same results. Decision coverage
measures the coverage of conditional branches
; branch coverage measures the coverage of both conditional and unconditional branches.
Does 100% branch coverage means 100% statement coverage Why?
“100% branch coverage implies 100% statement coverage” is correct. Below example, a = true will cover 100% of statements, but fails to test the branch where a division by zero fault is possible. Just because you cover every statement doesnt mean that you covered every branch the program could have taken.
What is statement coverage with example?
Statement coverage is a white box testing technique, which involves
the execution of all the statements at least once in the source code
. It is a metric, which is used to calculate and measure the number of statements in the source code which have been executed.
What is proper test coverage?
Test coverage is defined as a technique which
determines whether our test cases are actually covering the application code and how much code is exercised when we run those test cases
. If there are 10 requirements and 100 tests created and if 90 tests are executed then test coverage is 90%.
How branch coverage is calculated?
To calculate Branch Coverage, one has
to find out the minimum number of paths which will ensure that all the edges are covered
. In this case there is no single path which will ensure coverage of all the edges at once. The aim is to cover all possible true/false decisions.
What is branch coverage GCOV?
gcov reports.
Number of times each function call successfully returned
.
#
of times a branch was executed (really how many times the branch condition was evaluated) and # times each branch was taken. For branch coverage, this is the relevant figure.
What is branch testing with example?
Branch Testing is defined as a testing method, which has the main goal to ensure that
each one of the possible branches from each decision point is executed at least once
and thereby ensuring that all reachable code is executed.
What is a code branch?
A branch is
a copy of a codeline, managed in a
version control system (VCS). Branching helps software development teams work in parallel. It separates out “in-progress work” from tested and stable code. The codebase in a VCS is often referred to as the trunk, baseline, master, or mainline.
How do you get 100% decision coverage?
Therefore, to achieve 100% decision coverage, a second test case is necessary where A is less than or equal to B which ensures that the decision statement ‘IF A > B’ has a False outcome. So one test is sufficient for 100% statement coverage, but
two tests are needed
for 100% decision coverage.
Does error guessing have rules for testing?
Error
guessing has no explicit rules for testing
; test cases can be designed depending on the situation, either drawing from functional documents or when an unexpected/undocumented error is found while testing operations.
Does 100 Statement coverage guarantees 100 branch coverage?
100%
branch coverage guarantees 100% statement coverage.
