Levels of Functional testing

level-0 sanity testing
level-1 comprehensive testing
level-2 regression testing

functional testing & regression testing are done basically 
in the system testing. We are not doing these in each phase.

Functional & Regression Testing is spread across all stages 
of Testing. 

Lets go back to the definition of Testing -
 "Finding Defects".  Defects could be found at various 
stages of the project however the no. of defects as 
compared to the initial stages of the project with the 
final stages of the project will be minimal. Think about 
it...why would you call it as User Acceptance TESTING.

Functional, Regression, Retesting, Soak, Performance, Ad-
hoc, sanity etc. are part of System testing.

1.Functional testing comes under system testing only.
Regression testing will be continues up to system becomes 
bug free.

2.client -the system terminal which request information form
          another system/server(passive in nature)
  Server-the system which serves the information to  the
         client.(active in nature)

3.functional dependency bug in first occurrence it  
  status is reported as new defect and
  from next time onwards its status is duplicate.

functional testing tool  -- Winrunner

popular functional testing tool

1. Winrunner
2. QTP
3. Silktest
4. Advenet QEngine
5. AutoitV3

1)winrunner,
2)silk test,
3)QTP,
4)rational robot.

above are the popular functional testing tools

functional testing is a testing process where we test the 
functionality/behaviour of each functional component of the 
application...i.e.minimize button,transfer button,links etc.
i.e we check what is each component doing in that 
application...

In Functionality testing we are going to check the 
functionality is working as expected to the client 
specified requirement.

Functionality testing is to test the functional behavior 
of each and every component in the application. its tested 
against both positive and negative aspects.

From my point of view, system testing is broadly classified 
into functional and non-func. testing. hence Functional 
Testing is a part of System Testing. 

In system testing, testers test the product typically like 
the end-user.Every single Interface,module and even minute 
details have to be tested in this System Testing.

Functional Testing aims at testing the various 
functionalities of the product being tested. These 
functionalities include load, volume, stress, 
scalability, security, performance, etc.

in functional testing we concentrate only about particular 
functionality in the application,with out bothering how it 
works.

Functionality under load can be tested by running several
users concurrently. By increasing the amount of V users, we
can determine how much load the server can sustain.

Functional testing is the type of black box testing. In this 
we are going to test the functionality of the application.

Quality assurance that a web site performs properly. All 
aspects of the user interface, navigation between pages and 
off-site, multilingual navigation, etc. are tested. Testing 
is required in all the current browsers and on the major 
operating systems and platforms.
       OR
The portion of security testing in which the advertised 
features of a system are tested for correct operation.

it involves whether functions are properly placed in
our applications and its working fine r not.it also have i/o
testing,conf testing,compatibility testing,error
handling,recovery testing etc.,

          Functionality Testing: Is testing the 
functionality of the application. Is all the modules are 
working as per the requirement.

The portion of security testing in which the advertised 
features of a system are tested for correct operation.
              OR
Quality assurance that a web site performs properly. All 
aspects of the user interface, navigation between pages and 
off-site, multilingual navigation, etc. are tested. Testing 
is required in all the current browsers and on the major 
operating systems and platforms.

functional testing is nothing but whether the given 
function is working or not as per the specifications

Ex: field validation, Navigation e.t.c

Functionality Testing is nothing but to check whether our 
application is equal to customer requirements or not\|
Here we will do lot more tests

Ex: Intersystem Testing
     Error Handling testing

functionality testing comes under functional testing only 
i.e manual testing

Functional Testing starts with the through reading of 
Functional Docs, and getting to know how of Use Cases. This 
then comes up with Development of Test Cases, and Executing 
them. In case of Time Constraints, One can go for Monkey 
Testing too.

Functional Testing begins from Functional specification 
requirements(FRS)Docs, understanding the functionality of the 
application with the help of Use Cases(If application is 
not yet developed),Start writing test cases and execute 
the test cases.

Actual functional testing means verifying the dependent 
field on dependency field.

Example:once the user information is filled with all the 
mandatory field then only SUBMIT button should be enabled
(i,e Here SUBMIT button depends on dependency field)

Generally Functional Testing starts, once we are prepared 
the test cases for all the features as per the requirement 
specs. While preparing test cases, we need to cover all the 
+ve test cases,-ve test cases, adhoc testcases and GUI 
Test cases and also we need to assign certain priority to 
the testcases. As per the test cases we will perform different
levels in Functional Testing like FULL and Medium.We can 
also perform Sanity Testing as per the Testcases priority.

Full Functional Test Pass:
...........................
Should be executed all the testcases from P1 TO P4.


Medium Functional TestPass:
.............................
Should be covered only P1,P2 and P3(Optional)

Sanity Testing:
----------------
Should be covered all the P1 Testcases.
Note:All the above types of testing techniques as per the 
deadlines of our project.

In general testing team applies functional testing to 
validate "Meet customer requirements" on our appl-build. 
During this test T.E validates correctness of every 
functionality in terms of below techniques.

1. Behavioral coverage (object properties variation w.r.t 
operations.

2. I/P domain testing(size and type of every input object)

3. error-handling coverage ( preventing negative 
navigations with meaningful messages)

4. back end testing (impact of frontend operation on back end 
tables)

5. calculations coverage (correctness of objects)

FUNCTIONAL testing techniques

Functionality coverage
input domain testing
Error handling testing
recovery testing
Installation testing
Compatibility

Functional Testing is testing the implementation of 
requirements of an application. 

Is to test whether the functions specified by the 
client in the  requirements is functioning(working) 
correctly or not.

Is to test whether all the functionalities 
are working properly r not as specified in the SRS?

functional involves testing the functional requirements.

Functional Testing is part of System testing..

functional testing comes under black box.

Functional Testing comes under Black Box testing. Because 
tester does not know about the internal details of the 
program. Based up on the test cases he will test.

functional testing comes under black box testing as the 
tester need not know the internal code and logic of the 
application. But functionality can be tested by the coder 
also by executing their functional modules and supplying 
the data. hence it proves that functionality can be tested 
in both ways.

Functionality Testing tools
Rational Robo
Win Runner
Silk test
QTP

Performance Testing Tools:
OpenSTA & Load Runner

management Tool:
Test Director
 

this tesing is against the requirements of the application
->its used to check the set of object behavior and outcome 
of the object

To validate below factors
1)Behavioural checking
     -object properties
     -object behavior and outcome of the object
2)Input domain
     -checking ECP(Equalent Class Partitiond)/BVA
3)Error Handling
     -error messages
4)DatabaSES
     -INSERT,UPDATE,DELETE

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Testing each and every component thoroughly against 
requirement specification.

functional testing is a mandatory testing level in 
system/software testing. in this level testers conduct below 
sub tests.
(1)behavioral/control flow/GUI testing.
(2)input domain testing.
(3)error handling testing.
(4)manipulation testing.
(5)database testing.

--> during this test testing team can run s/w. and validate 
responses of each screen.

--> during this test testing team can validate size and type 
of inputs.

--> during test testing team can run s/w with invalid data. 
to identify handling those errors by that s/w.

--> during this test testing team can run s/w with valid 
data. and ensure that the correctness of output.