differences between BVA and ECP - Functional Testing @ OneStopTesting - Functional Testing @ OneStopTesting - Types Of Software Testing @ OneStopTesting

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Sucheta
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Joined: 27Apr2007
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Topic: differences between BVA and ECP
Posted: 27Apr2007 at 11:37pm

Hi, I am completely new to software testing,
I want to know the differences between BVA and ECP. Why we use both of them?
Any one of them is sufficient or else we have to use both of them. Any feedback would be greatly appreciated

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Pooja_111
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Posted: 28Apr2007 at 5:05am

BVA means the size/range of objects/users to test
ECP means the type like valid/invalid to test.

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suman
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Posted: 03May2007 at 11:58pm

Bva means considering the boundary values for test data.
ECP means choose the valid and invalid range for test data.

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Zakir
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Posted: 29Jun2007 at 12:28am

ECP means partionning a data into subsets and arrive at the test case within the subsets of data, it may be a Valid or Invalid class.

BVA means checking the boundry conditions of test data within Equivalence classes.

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goodtester
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Posted: 13Jul2007 at 10:57am

BVA is having the ECP criteria..only thing is if you want to reduce the number of test cases for a range use ECP..but if u r thinking that the errors will happen in the boundaries use BVA helps you to create subset of data for the wide range of data to be tested

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ksrikanthinbox
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Posted: 05Oct2007 at 10:23pm

EQA: whether given input range is valid or invalid and domain are which may equal size or not.

BVA: Given Input range is (Minimum,Maximum,Min-1,Max-1,min+1,Max-1)

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jyotibajpai.qa
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Posted: 22Oct2007 at 6:30am

Boundary Value Analysis (BVA) examines those data elements that can take a continuous range of
values, using the requirements and design to predict boundaries where the system’s behaviour changes.
The idea is to produce three values – one on the boundary itself, and the other two either side (as close
as quantisation permits). If the boundary is between valid and invalid ranges, the test case that uses the
invalid value will be a negative test – for instance, using 66 in an age field that only accepts values
from 18-65.
Equivalence Class Partitioning (ECP) looks at the range between the boundaries. Each member of a
given equivalence class should, in the context of a known test, make the system do the same thing – so
the tester does not have to test every value in an equivalence class. Ranges of invalid input data can be
seen as negative tests – for instance, an age field may be expected to reject all negative numbers in the
same way.

Edited by jyotibajpai.qa - 22Oct2007 at 6:31am

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One Stop Testing Forum : Types Of Software Testing @ OneStopTesting : Functional Testing @ OneStopTesting

Author	Message
Sucheta Newbie Joined: 27Apr2007 Online Status: Offline Posts: 1	Topic: differences between BVA and ECP Posted: 27Apr2007 at 11:37pm
	Hi, I am completely new to software testing, I want to know the differences between BVA and ECP. Why we use both of them? Any one of them is sufficient or else we have to use both of them. Any feedback would be greatly appreciated Post Resume: Click here to Upload your Resume & Apply for Jobs

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Pooja_111 Newbie Joined: 28Apr2007 Online Status: Offline Posts: 1	Posted: 28Apr2007 at 5:05am
	BVA means the size/range of objects/users to test ECP means the type like valid/invalid to test.
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suman Newbie Joined: 03May2007 Online Status: Offline Posts: 1	Posted: 03May2007 at 11:58pm
	Bva means considering the boundary values for test data. ECP means choose the valid and invalid range for test data.
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Zakir Newbie Joined: 27Jun2007 Location: United Kingdom Online Status: Offline Posts: 1	Posted: 29Jun2007 at 12:28am
	ECP means partionning a data into subsets and arrive at the test case within the subsets of data, it may be a Valid or Invalid class. BVA means checking the boundry conditions of test data within Equivalence classes.
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goodtester Newbie Joined: 13Jul2007 Location: Iraq Online Status: Offline Posts: 1	Posted: 13Jul2007 at 10:57am
	BVA is having the ECP criteria..only thing is if you want to reduce the number of test cases for a range use ECP..but if u r thinking that the errors will happen in the boundaries use BVA helps you to create subset of data for the wide range of data to be tested
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ksrikanthinbox Newbie Joined: 05Oct2007 Location: India Online Status: Offline Posts: 1	Posted: 05Oct2007 at 10:23pm
	EQA: whether given input range is valid or invalid and domain are which may equal size or not. BVA: Given Input range is (Minimum,Maximum,Min-1,Max-1,min+1,Max-1)
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jyotibajpai.qa Newbie Joined: 22Oct2007 Location: India Online Status: Offline Posts: 1	Posted: 22Oct2007 at 6:30am
	Boundary Value Analysis (BVA) examines those data elements that can take a continuous range of values, using the requirements and design to predict boundaries where the system’s behaviour changes. The idea is to produce three values – one on the boundary itself, and the other two either side (as close as quantisation permits). If the boundary is between valid and invalid ranges, the test case that uses the invalid value will be a negative test – for instance, using 66 in an age field that only accepts values from 18-65. Equivalence Class Partitioning (ECP) looks at the range between the boundaries. Each member of a given equivalence class should, in the context of a known test, make the system do the same thing – so the tester does not have to test every value in an equivalence class. Ranges of invalid input data can be seen as negative tests – for instance, an age field may be expected to reject all negative numbers in the same way. Edited by jyotibajpai.qa - 22Oct2007 at 6:31am
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