What is statement coverage in software testing?

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 the meaning of Decision Coverage?

Decision coverage or 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. That is, every decision is taken each way, true and false.

What is coverage and what are the different types of coverage techniques?

There are three basic types of coverage techniques as shown in the following figure: – Statement coverage: This coverage ensures that each line of source code has been executed and tested. – Decision coverage: This coverage ensures that every decision (true/false) in the source code has been executed and tested.

How do you calculate statement coverage and decision coverage?

Statement Coverage (SC):

1. To calculate Statement Coverage, find out the shortest number of paths following.
2. To calculate Branch Coverage, find out the minimum number of paths which will.
3. Path Coverage ensures covering of all the paths from start to end.
4. 100\% LCSAJ coverage will imply 100\% Branch/Decision coverage.

What is statement testing and decision?

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 is the difference between branch and decision coverage?

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.

What are the different types of coverage based testing?

For each of these test design techniques the same coverage types can be applied: Condition Decision Coverage (CDC), Modified Condition Decision Coverage (MCDC) and Multiple Condition Coverage (MCC)….Condition-oriented test design

• Control flow testing.
• Semantic testing.
• Elementary Comparison testing.
• Decision table testing.

How many types of test coverage are there?

Two common forms of test coverage are statement (or line) coverage and branch (or edge) coverage.

Does 100\% statement coverage mean 100\% branch coverage?

The archetypical example, showing that 100\% statement coverage does not imply 100\% branch coverage, was already given by Alexey Frunze. “100\% branch coverage implies 100\% statement coverage” is correct.

Is Path coverage and branch coverage same?

Path coverage counts the number of full paths from input to output through a program that get executed, whereas branch coverage counts the number of branches that were tested at any point in time.

Does statement coverage imply branch coverage?

“100\% branch coverage implies 100\% statement coverage” is correct. Just because you cover every statement doesnt mean that you covered every branch the program could have taken. you have to look at every possible branch, not just the statements inside every branch.