Validation : The process of evaluating software during or at the end of the development process to determine whether it satisfies specified requirements.
Verification : The process of evaluating software to determine whether the products of a given development phase satisfy the conditions imposed at the start of that phase.
From that we notice that the Quality Control is a Validation process while the Quality Assurance is a Verification process.
Sunday, May 31, 2009
Difference between Quality Assurance and Quality Control
• Quality control relates to a specific product or service.
• Quality control verifies whether specific attribute(s) are in, or are not in, a specific
product or service.
• Quality control identifies defects for the primary purpose of correcting defects.
• Quality control is the responsibility of the team/worker.
• Quality control is concerned with a specific product.
• Quality assurance helps establish processes.
• Quality assurance sets up measurement programs to evaluate processes.
• Quality assurance identifies weaknesses in processes and improves them.
• Quality assurance is a management responsibility, frequently performed by a staff
function.
• Quality assurance is concerned with all of the products that will ever be produced by a
process.
• Quality assurance is sometimes called quality control over quality control because it
evaluates whether quality control is working.
• Quality assurance personnel should never perform quality control unless it is to
validate quality control.
• Quality control verifies whether specific attribute(s) are in, or are not in, a specific
product or service.
• Quality control identifies defects for the primary purpose of correcting defects.
• Quality control is the responsibility of the team/worker.
• Quality control is concerned with a specific product.
• Quality assurance helps establish processes.
• Quality assurance sets up measurement programs to evaluate processes.
• Quality assurance identifies weaknesses in processes and improves them.
• Quality assurance is a management responsibility, frequently performed by a staff
function.
• Quality assurance is concerned with all of the products that will ever be produced by a
process.
• Quality assurance is sometimes called quality control over quality control because it
evaluates whether quality control is working.
• Quality assurance personnel should never perform quality control unless it is to
validate quality control.
Wednesday, May 27, 2009
Types of software Testing
Software Testing Types:
1 - Black box testing : Internal system design is not considered in this type of testing. Tests are based on requirements and functionality.
2 - White box testing : This testing is based on knowledge of the internal logic of an application’s code. Also known as Glass box Testing. Internal software and code working should be known for this type of testing. Tests are based on coverage of code statements, branches, paths, conditions.
3 - Unit testing : Testing of individual software components or modules. Typically done by the programmer and not by testers, as it requires detailed knowledge of the internal program design and code. may require developing test driver modules or test harnesses.
4 - Incremental integration testing : Bottom up approach for testing i.e continuous testing of an application as new functionality is added; Application functionality and modules should be independent enough to test separately. done by programmers or by testers.
5 - Integration testing : Testing of integrated modules to verify combined functionality after integration. Modules are typically code modules, individual applications, client and server applications on a network, etc. This type of testing is especially relevant to client/server and distributed systems.
6 - Functional testing : This type of testing ignores the internal parts and focus on the output is as per requirement or not. Black-box type testing geared to functional requirements of an application.
7 - System testing : Entire system is tested as per the requirements. Black-box type testing that is based on overall requirements specifications, covers all combined parts of a system.
8 - End-to-end testing : Similar to system testing, involves testing of a complete application environment in a situation that mimics real-world use, such as interacting with a database, using network communications, or interacting with other hardware, applications, or systems if appropriate.
9 - Sanity testing : Testing to determine if a new software version is performing well enough to accept it for a major testing effort. If application is crashing for initial use then system is not stable enough for further testing and build or application is assigned to fix.
10 - Regression testing : Testing the application as a whole for the modification in any module or functionality. Difficult to cover all the system in regression testing so typically automation tools are used for these testing types.
11 - Acceptance testing : Normally this type of testing is done to verify if system meets the customer specified requirements. User or customer do this testing to determine whether to accept application.
12 - Load testing : Its a performance testing to check system behavior under load. Testing an application under heavy loads, such as testing of a web site under a range of loads to determine at what point the system’s response time degrades or fails.
13 - Stress testing : System is stressed beyond its specifications to check how and when it fails. Performed under heavy load like putting large number beyond storage capacity, complex database queries, continuous input to system or database load.
14 - Performance testing : Term often used interchangeably with ’stress’ and ‘load’ testing. To check whether system meets performance requirements. Used different performance and load tools to do this.
15 - Usability testing : User-friendliness check. Application flow is tested, Can new user understand the application easily, Proper help documented whenever user stuck at any point. Basically system navigation is checked in this testing.
16 - Install/uninstall testing : Tested for full, partial, or upgrade install/uninstall processes on different operating systems under different hardware, software environment.
17 - Recovery testing : Testing how well a system recovers from crashes, hardware failures, or other catastrophic problems.
18 - Security testing : Can system be penetrated by any hacking way. Testing how well the system protects against unauthorized internal or external access. Checked if system, database is safe from external attacks.
19 - Compatibility testing : Testing how well software performs in a particular hardware/software/operating system/network environment and different combination s of above.
20 - Comparison testing : Comparison of product strengths and weaknesses with previous versions or other similar products.
21 - Alpha testing : In house virtual user environment can be created for this type of testing. Testing is done at the end of development. Still minor design changes may be made as a result of such testing.
22 - Beta testing : Testing typically done by end-users or others. Final testing before releasing application for commercial purpose.
23 - Exploratory testing : is simultaneous learning, test design, and test execution.In other words, exploratory testing is any testing to the extent that the tester actively controls the design of the tests as those tests are performed and uses information gained while testing to design new and better tests.
Another Definition Exploratory Tests do not involve a test plan, checklist, or assigned tasks. The strategy here is to use past testing experience to make educated guesses about places and functionality that may be problematic. Testing is then focused on those areas. Exploratory testing can be scheduled. It can also be reserved for unforeseen downtime that presents itself during the testing process.
24 - Rapid software testing : Rapid testing is a way to scale thorough testing methods to fit an arbitrarily compressed schedule. Rapid testing doesn't mean "not thorough", it means "as thorough as is reasonable and required, given the constraints on your time." A good rapid tester is a skilled practitioner who can test productively under a wider variety of conditions than conventionally trained (or untrained) testers.
25 - Smoke testing : originated in the hardware testing practice of turning on a new piece of hardware for the first time and considering it a success if it does not catch fire and smoke.
Another definition is just before releasing the build the developpers will check whether the build is proper or not.
26 - Compliance testing : means checking the behaviour of the system at run time to determine if it behaves as desired. Desired behaviour may mean compliance
with some normative specification.
1 - Black box testing : Internal system design is not considered in this type of testing. Tests are based on requirements and functionality.
2 - White box testing : This testing is based on knowledge of the internal logic of an application’s code. Also known as Glass box Testing. Internal software and code working should be known for this type of testing. Tests are based on coverage of code statements, branches, paths, conditions.
3 - Unit testing : Testing of individual software components or modules. Typically done by the programmer and not by testers, as it requires detailed knowledge of the internal program design and code. may require developing test driver modules or test harnesses.
4 - Incremental integration testing : Bottom up approach for testing i.e continuous testing of an application as new functionality is added; Application functionality and modules should be independent enough to test separately. done by programmers or by testers.
5 - Integration testing : Testing of integrated modules to verify combined functionality after integration. Modules are typically code modules, individual applications, client and server applications on a network, etc. This type of testing is especially relevant to client/server and distributed systems.
6 - Functional testing : This type of testing ignores the internal parts and focus on the output is as per requirement or not. Black-box type testing geared to functional requirements of an application.
7 - System testing : Entire system is tested as per the requirements. Black-box type testing that is based on overall requirements specifications, covers all combined parts of a system.
8 - End-to-end testing : Similar to system testing, involves testing of a complete application environment in a situation that mimics real-world use, such as interacting with a database, using network communications, or interacting with other hardware, applications, or systems if appropriate.
9 - Sanity testing : Testing to determine if a new software version is performing well enough to accept it for a major testing effort. If application is crashing for initial use then system is not stable enough for further testing and build or application is assigned to fix.
10 - Regression testing : Testing the application as a whole for the modification in any module or functionality. Difficult to cover all the system in regression testing so typically automation tools are used for these testing types.
11 - Acceptance testing : Normally this type of testing is done to verify if system meets the customer specified requirements. User or customer do this testing to determine whether to accept application.
12 - Load testing : Its a performance testing to check system behavior under load. Testing an application under heavy loads, such as testing of a web site under a range of loads to determine at what point the system’s response time degrades or fails.
13 - Stress testing : System is stressed beyond its specifications to check how and when it fails. Performed under heavy load like putting large number beyond storage capacity, complex database queries, continuous input to system or database load.
14 - Performance testing : Term often used interchangeably with ’stress’ and ‘load’ testing. To check whether system meets performance requirements. Used different performance and load tools to do this.
15 - Usability testing : User-friendliness check. Application flow is tested, Can new user understand the application easily, Proper help documented whenever user stuck at any point. Basically system navigation is checked in this testing.
16 - Install/uninstall testing : Tested for full, partial, or upgrade install/uninstall processes on different operating systems under different hardware, software environment.
17 - Recovery testing : Testing how well a system recovers from crashes, hardware failures, or other catastrophic problems.
18 - Security testing : Can system be penetrated by any hacking way. Testing how well the system protects against unauthorized internal or external access. Checked if system, database is safe from external attacks.
19 - Compatibility testing : Testing how well software performs in a particular hardware/software/operating system/network environment and different combination s of above.
20 - Comparison testing : Comparison of product strengths and weaknesses with previous versions or other similar products.
21 - Alpha testing : In house virtual user environment can be created for this type of testing. Testing is done at the end of development. Still minor design changes may be made as a result of such testing.
22 - Beta testing : Testing typically done by end-users or others. Final testing before releasing application for commercial purpose.
23 - Exploratory testing : is simultaneous learning, test design, and test execution.In other words, exploratory testing is any testing to the extent that the tester actively controls the design of the tests as those tests are performed and uses information gained while testing to design new and better tests.
Another Definition Exploratory Tests do not involve a test plan, checklist, or assigned tasks. The strategy here is to use past testing experience to make educated guesses about places and functionality that may be problematic. Testing is then focused on those areas. Exploratory testing can be scheduled. It can also be reserved for unforeseen downtime that presents itself during the testing process.
24 - Rapid software testing : Rapid testing is a way to scale thorough testing methods to fit an arbitrarily compressed schedule. Rapid testing doesn't mean "not thorough", it means "as thorough as is reasonable and required, given the constraints on your time." A good rapid tester is a skilled practitioner who can test productively under a wider variety of conditions than conventionally trained (or untrained) testers.
25 - Smoke testing : originated in the hardware testing practice of turning on a new piece of hardware for the first time and considering it a success if it does not catch fire and smoke.
Another definition is just before releasing the build the developpers will check whether the build is proper or not.
26 - Compliance testing : means checking the behaviour of the system at run time to determine if it behaves as desired. Desired behaviour may mean compliance
with some normative specification.
Tuesday, May 26, 2009
Monkey Testing
This type of test was the main reason that push me to create this bolg :D
I liked to share my testing knowledge so we all get the benifit...
Back to Monkey Test :)
In computer science, a monkey test is a unit test that runs with no specific test in mind. The monkey in this case is the producer of any input. For example, a monkey test can enter random strings into text boxes to ensure handling of all possible user input or provide garbage files to check for loading routines that have blind faith in their data.
The name 'monkey' comes from the adage that ‘a thousand monkeys at a thousand typewriters will eventually type out the entire works of Shakespeare’. Cf. the Infinite monkey theorem.
I liked to share my testing knowledge so we all get the benifit...
Back to Monkey Test :)
In computer science, a monkey test is a unit test that runs with no specific test in mind. The monkey in this case is the producer of any input. For example, a monkey test can enter random strings into text boxes to ensure handling of all possible user input or provide garbage files to check for loading routines that have blind faith in their data.
The name 'monkey' comes from the adage that ‘a thousand monkeys at a thousand typewriters will eventually type out the entire works of Shakespeare’. Cf. the Infinite monkey theorem.
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