Decision testing is also called branch testing. It is test design technique for white box testing. The white box testing is performed by the developers using the development tools. The programs and interfaces between the programs are tested. The white box testing is also called structural testing. There are two types of white box testing techniques:
statement testing or statement coverage
decision testing or decision coverage
Decision Testing:
The decision testing is a process which checks the behaviour of the application by providing different combinations of input and obtains various results. It is also called as Branch Testing where the different types of inputs are supplied to check a particular condition.
Example 1:
To check if a number is greater than 50
algorithm:
int a
read a
if a > 50 then
print: a is greater than 50
end if
flowchart:
Refer to the above flowchart, there are two paths: TRUE & FALSE. As per decision testing, 100% decision coverage can be achieved when all the possible paths between start to end are covered. To cover the two possible paths below data sets can be considered for testing:
a = 60 (TRUE path) , a = 50 (FALSE path)
a = 60 (TRUE path) , a = 40 (FALSE path)
Check your understanding:
1. List down the different symbols used in flowchart & their purpose
Symbols used in above flow chart are:
1. Oval symbol indivatess start and End.
2. Small parallelogram symbol indicates read.
3. A big parallelogram symbol indicates output.
4. A Rhombus symbol indicates validation.
5. A Rectangle symbol indicates linking of validation, output and End.
Different Symbols used in the flow chart and their purpose are:
1. Oval symbol indicates the Start and End.
2. Small Parallelogram symbol indicates Read.
3. Big Parallelogram symbol indicates Input.
4. Rhombus symbol indicates Validation.
5. Rectangle symbol indicates linking of Validation, Output and End.
1.Start/end: An oval represents a start or end point.
2.Arrows:A line is a connector that shows relationships between the representative shapes.
3.Input/Output: A parallelogram represents input or output.
4.Decision: A diamond indicates a decision.
5.Process: A rectangle represents a process
1. List down the different symbols used in flowchart & their purpose.
• An oval represents a start or end point
• A line is a connector that shows relationships between the representative shapes
• A parallelogram represents input or output
• A rectangle represents a process
• A diamond represents a decision
Ans.: Symbols used in flowchart & their purpose.
Oval- This represent the start points, end points.
Parallelogram- input/output symbol. Represent data that is available for input or output as well as a representing resources used or generated.
Diamond – decision symbol, indicates a question to be answered-usually yes/no or true/false.
Rectangle – A rectangle represent a process.
Line – A line is connector that shows relationship between the representative shape
Symbols used in the flowchart and their purpose
1. Oval represents start/end
2. Parallelogram represents input/output
3. Rectangle represents process
4. Diamond represents decision
5. Line is a connector between the representative shapes.
decision testing and branch testing is a testing method which aims 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 every decision is taken each way true and false.
Oval: start or end
Arrows: Connects and shows relationship between shapes
Parallelogram: Input/Output
Rectangle: Process
Diamond: Decision.
The different symbols used in flowchart & their purpose:
*Oval-An Oval represents START/END Point.
*Arrow- Lines and arrows show the sequence of the steps, and the relationships among them.
*Parallelogram: An Parallelogram represents INPUT/OUTPUT.
*Rectangle: An Rectangle represents a PROCESS.
*Diamond: A Diamond indicates a DECISION.
Oval represents start/end
diamond represent condition
Lines/arrow -flow/connection
T means true
F means false
The different symbols and their use in flow chart
Oval it represent Start/End point
Arrow represent the direction of the steps
Parallelogram represents input/ output
Rectangle represents a process.
Diamond A Diamond indicates a Decision.
Oval is the start and end point.
The arrows represent the relationship between the shapes.
Parallelogram is the result, input/output.
Line connector, connects the the flow of the program.
T: if the decision is true/ yes.
F: if the decision is false/ no
Oval: start or end point
arrows: relationship between representative shapes
parallelogram: input/output
rectangle: process
Diamond: decision
Oval – Start and End
Parallelogram : input/output
diamond : decision/condition
Lines and Arrows : To represent connection in the program and which direction it’s flowing
Oval shape : Start & End
Parallelogram: Input /Output
Diamond: Decision or condition
T – If the condition isTrue or yes
F– If the condition is false or no
Arrow & Lines: Flow & connection
1. Oval- start and end point.
2. Arrows – shows the relationship between shapes.
3. Parallelogram- represents input or output.
4. Diamond-indicates decision.
5. T- decision is true.
6. F- decision is false.
1.. The arrows represent the line connector, shows the relationship between shapes.
2.. The parallelogram represents input or output.
3. The diamond indicated desicion.
4. T- If the decision is true.
5.Oval is the start and end point.
6. F- if the decision is false
Ans:
1 . Oval is the start and end point
2. The parallelogram represents input or output.
3. The diamond indicated decision.
4. T- If the decision is true.
5. F- if the decision is false.
Different symbols used in the flow chart and their purpose are:
1. Oval shape: Represents a start or end point.
2. Arrow: It acts as a connector that shows the relationships between the representative shapes.
3. Parallelogram: Represents input or output.
4. Rectangle: Represents a process.
5. Diamond: Indicates a decision.
The different symbols used in flow chart are :
Oval – represents start and end points
Arrow – represents the connection between the symbols
Diamond- represents what the condition is
T – represents whether the condition is true or not
F -represents whether the condition is false or not
Parallelogram- represents input/output
Oval: The start/ end of the flowchart
Parallelogram: Input and output
Diamond: Decision
Arrow: Connector
T/F: True / False.
different symbols :
Oval – start / end process
Parallelogram – represents Input / output
Diamond – represents condition
T- to check condition is True
F- to check condition is False
Oval – start and end of the flowchart
Parallelogram – is the process (Read/Print)
Diamond – statement of the decision if its T or F (true or false)
line – connects a process or statements together
T – True if it satisfies the statement in the diamond shape
F- False if it does not satisfy the statement
oval: start / end of the process
arrow: shows the connection between the flow of the program
parallelogram: input / output
rectangle: processing
Diamond : decision
T: if the condition is TRUE
F: if the condition is FALSE.
1. The Oval: An End or a Beginning
2. The Rectangle: A process step
3. The Arrow: Directional Flow
4. The Diamond: Call for a Decision
5. The Parallelogram: Data being input or output from flow
6. The Circle: Connector, flow continuing to next page
Decision Testing is done by Developers. The programs and interfaces within the programs are tested.
1. Oval represents START/END Point.
2. Rectangle-For processing/or a task
3.Arrows – shows the relationship between shapes.
4. Parallelogram- represents input or output.
5. Diamond-indicates decision.
6. T- decision is true.
7. F- decision is false.
Oval: Start and end diagram of a flow chart.
Arrow: Direction of flow in a flow chart
Diamond: Decision field where we write algorithm condition
Parallelogram: Input and output field
T: True path
F: False path
1. List down the different symbols used in flowchart & their purpose.
• An oval represents a start or end point
• A line is a connector that shows relationships between the representative shapes
• A parallelogram represents input or output
• A rectangle represents a process
• A diamond represents a decision
Oval : start and end
Arrows and LInes : show connection and flow of data
Diamond: Decision
Parallelogram: Input and output
T & F: True Path and F: False Path
Oval – Start and End of the diagram
Arrows – to show where to go after that step
Diamond – decision field
Rectangle – Result or input/output
T – the condition is marked as True
F – the condition is marked as False
Oval represents Start and End of the diagram.
Parallelogram represents the Input and output
Diamond represents Decision field
Lines and Arrows represent the path of the next step
T: True condition
F: False condition
Oval:Start and end point
Diamond:condition
T:True
F:False
Parallelogram :input or output
Arrows: connection that flows.
1. Oval is the start and end point.
2. The arrows represent the line connector, shows the relationship between shapes.
3. The parallelogram represents input or output.
4. The diamond indicated decision.
5. T- If the decision is true.
6. F- if the decision is false.
List down the different symbols used in flowchart & their purpose
Oval: Use for “Start & End” in an algorithm
Arrows: Directional
Rectangle: Use for “Input & Output” in decision testing
Diamond: Decision canvas – To verify different conditions
Greater than: to verify a superiority condition
Question mark: if it is true or false
T or F: Path selection options
Oval: Start & End of the flow chart
Parallelogram: Input /Output data
Diamond: Decision making or conditions
Arrow & Lines: Connection and flow of data
Rectangle Shape – Process
Oval or Pill Shape – Start or End
Diamond Shape – Decision
Parallelogram – Input/Output
T- true.
F- false.
• Oval: It’s represents the start and end.
• Parallelogram – Represents input/output.
• Diamond Shape – Represents a decision
• Rectangle Shape – Represents a process
• Arrow: relationship between the representative shapes.
T- if it’s true
F- if it’s flase
1.List down the different symbols used in flowchart & their purpose
• Rectangle Shape – Represents a process
• Oval or Pill Shape – Represents the start or end
• Diamond Shape – Represents a decision
• Parallelogram – Represents input/output
T-true F-false
Lines and arrows shows the direction of flow
List down the different symbols used in flowchart & their purpose
Oval is the start and end.
The arrow works as the line connector, shows the relationship between shapes.
The parallelogram represents input or output..
The diamond indicates desicion..
T- If the decision is true.
F- if the decision is false
Oval shape:It represent start and end.
Rectangle:shows the processing steps.
Diamond:Decisions
Parellelogram:Input and output.
Line and arrow:Flow and sequence of steps.
T:If decision is true.
F:If decision is false.
In statement coverage testing, 100% statement coverage is said to be achieved if all the statements are tested at least once. Meaning only the specified condition is tested once fulfilling the 100% statement coverage for the test case.
Whereas 100% decision coverage can be achieved when all the possible paths between start to end are covered. Meaning all “True or False” possible outcomes are tested to verify the behavior of the software.
ovals – start/ end
rectangles – input/output
diamond – condition
t – true to condition
F – false to condition
arrow and lines – path
1. List down the different symbols used in flowchart & their purpose
~An oval represents the start/end
~An arrow/line/flow lines is a connector which shows the relationships between different shapes.
~A parallelogram represents the input/ output or action.
~A rectangle represents the process or step.
~A diamond represents a decision.
1.Start/end: An oval represents a start or end point.
2.Arrows:A line is a connector that shows relationships between the representative shapes.
3.Input/Output: A parallelogram represents input or output.
4.Decision: A diamond indicates a decision.
5.Process: A rectangle represents a process
Oval is the start and end point
Diamond is checking the decision
T is if the condition is true
F is if the condition is false
Parallelogram is the input or output
Oval: represents Start / End
Arrow: shows the relationship between shapes
parallelogram – input/output
rectangle – process
diamond – decision
Oval: An Oval Represents:Start or End Point.
Arrow: An Arrow Represent a Connector that shows relationships btw the Representative shapes
Parallelogram: A Parallelogram Represents input or output
Rectangle:A rectangle Represents a Process
Diamond:Diamond Indicates a Decision.
T:True
F:False
Different symbols used in flowchart & their purpose:
Oval: Start/End
Rectangle: Process
Diamond: Decision
Parallelogram: Input/Output
Arrows: Shows flow or relationship between shapes
A flowchart is a diagram that shows step-by-step progression through a procedure or system especially using connecting lines and a set of conventional symbols. The different symbols of the flowchart are:
– The oval is used to represent the start and end of a process
– The rectangle shows any step in the process
– The arrow is used to show the direction of the steps followed.
– The diamond symbolizes that a decision needs to be made.
– T – the condition is marked as True
– F – the condition is marked as False
1. List down the different symbols used in flowchart & their purpose
Oval – Start and end of a program
Rectangle – Input/output
Arrow – flow of the algorithm pathways
Diamond – decision split the flowchart sequence into multiple paths (True or False) in order to represent selection and repetition.
Oval-Start and End
Input/Output-Parallelogram
Diamond-Decision
Rectangle-Process
Arrow-connector