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Questions tagged [validation]

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7 votes
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How is the Trial Period for Softwares generally implemented?

I was always under the assumption that trial softwares write a registry value of the installation date and then the software makes a comparison of the current date of the system with the remaining ...
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  • 1,543
18 votes
9 answers
20k views

When should pointers be checked for NULL in C?

Summary: Should a function in C always check to make sure it is not dereferencing a NULL pointer? If not when is it appropriate to skip these checks? Details: I've been reading some books about ...
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5 votes
1 answer
3k views

MVC Pattern - How to get errors from the model to the controller?

Say I have a typical MVC setup. The controller passes on some input to the model, and asks it to do something with it. But the validation of the data fails, or there is some other problem. What's the ...
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  • 2,707
2 votes
2 answers
3k views

Validating Objects With XSDs: Is Re-Serializing Redundant or Negligible?

Context: I've got a web service that deals with request / response objects. There are strict, externally-defined schemas constraining both the structure and the content of both requests and responses....
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  • 419
9 votes
1 answer
1k views

Better to use error monad with validation in your monadic functions, or implement your own monad with validation directly in your bind?

I'm wondering what's better design wise for usability/maintainability, and what's better as far as fitting with the community. Given the data model: type Name = String data Amount = Out | Some | ...
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1 vote
2 answers
2k views

Class structure/pattern for validating several different Excel templates?

I'm trying to validate the contents of Excel sheets that follow several different templates. For each one, there are three possible validation actions for various cells: Regex (e.g. "XYZ-123" fails ...
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  • 363
5 votes
3 answers
244 views

Name for sanitizing at the right time?

Recently we had an issue on our site where someone attempted SQL injection via a cookie (we'll call it lastID). NOC was in a frenzy and angry about how the cookie as an attack vector could be ignored....
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1 vote
2 answers
860 views

Referential integrity in a database where tuples are not physically deleted

Many modern Relational Database Management Systems automatically support referential integrity, i.e. when you try to delete a tuple which has a reference (in the form of foreign key, for example), the ...
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  • 7,303
2 votes
1 answer
8k views

Mobile number validation

I am trying to find best way to validate a mobile number with in a country. Currently my understanding is: User can enter whatever format they want in mobile numbers and its a waste of time and ...
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4 votes
2 answers
820 views

How to properly include field validation in a Software Documenation

I'm developing a software documentation in a project, and much of it are just CRUD or CRUD based functions. As you can imagine, a lot of the rules are constraints about fields validation, things like ...
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  • 728
6 votes
4 answers
2k views

Validating User Stories: How much change is too much?

While the core of requirements development and acceptance criteria would ideally take place during the planning meeting in order to create a better estimate, Scrum encourages continuous interaction ...
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2 votes
3 answers
2k views

Why some consider static analysis a testing and some do not?

Preparing myself also to ISTQB certification, I found they call static analysis actually as a static testing, while some engineering book distinct between static analysis and testing, which is the ...
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  • 4,878
3 votes
2 answers
863 views

Validation and Verification explanation (Boehm) - I cannot understand its point

Hopefully my last thread about V&V as I found the B.Boehm is text which I just do not understand well (likely my technical English is not that good). http://csse.usc.edu/csse/TECHRPTS/1979/...
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  • 4,878
2 votes
4 answers
35k views

How to apply verification and validation on the following example

I have been following verification and validation questions here with my colleagues, yet we are unable to see the slight differences, probably caused by language barrier in technical English. An ...
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  • 4,878
6 votes
4 answers
1k views

Can data classes contain methods for validation?

OK, say I have a data class for a user: public class User { private String firstName; private String lastName; private long personCode; private Date birthDate; private Gender gender; private String ...
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  • 551
6 votes
2 answers
2k views

Is server validation necessary with client-side validators?

I recently created a .net web app that used over 200 custom validators on one page. I wrote code for both ClientValidationFunction and OnServerValidate which results in a ton of repetitive code. My ...
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  • 163
2 votes
1 answer
391 views

How best to implement HTML5 support for my validation library

I have created an annotation-based validation library called regula. There seems to be some amount of interest around the framework and the next thing I'd like to do is to support HTML5 validation. ...
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579 votes
1 answer
74k views

Is the use of "utf8=✓" preferable to "utf8=true"?

I have recently seen a few URIs containing the query parameter "utf8=✓". My first impression (after thinking "mmm, looks cool") was that this could be used to detect a broken character encoding. So, ...
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  • 24.3k
-2 votes
1 answer
3k views

Password Validation using regular expressions in html 5 [closed]

this question may sound stupid, but no one has ever taught me this. I have an HTML input for a password field, and you can only log on with one specific password with JS. Could someone please give me ...
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2 votes
5 answers
320 views

Verification of requirements question

Doing a lot of reading about V&V, I would need to clarify the following. A lot of definitions (less formal ones found in books) define verification like that: Verification: The software should ...
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  • 4,878
3 votes
2 answers
916 views

Functional testing in the verification

Yesterday my question How come verification does not include actual testing? created a lot of controversy, yet did not reveal the answer for related and very important question: does black box ...
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  • 4,878
8 votes
2 answers
887 views

How come verification does not include actual testing?

Having read a lot about this topic --- such as on this Software Testing Fundamentals site on verification and validation and Software Testing and Quality Assurance: Theory and Practice by Naik and ...
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  • 4,878
5 votes
3 answers
5k views

Validating best practices, property vs dto, simple type vs object

Consider an application where adds an email address to his profile and submits it. We have some dispute in our team over how to validate this email address. Some developers (including me) believe ...
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0 votes
2 answers
330 views

How should a website validate a users mailing address?

This is for a site that relies on shipping items via UPS or FedEx. I know there is software out there that does it (http://en.wikipedia.org/wiki/Coding_Accuracy_Support_System), but if you are trying ...
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  • 1
0 votes
2 answers
242 views

What is the logic behind filtering/sanitizing input?

I have always found it more logic to validate input instead of filtering it. How to appropriately filter data depends on the situation, so IMO it should be done in output or when saving to a database. ...
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  • 1,452
1 vote
4 answers
630 views

Is it practical to have perfect validation score on HTML?

I was in a heated discussion the other day, about whether or not it's practical to have a perfect validation score on any HTML document. By practical I mean: Does not take a ridiculous amount of time ...
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13 votes
5 answers
2k views

For an ORM supporting data validation, should constraints be enforced in the database as well?

I have always applied constraints at the database level in addition to my (ActiveRecord) models. But I've been wondering if this is really required? A little background I recently had to unit test a ...
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  • 235
0 votes
1 answer
2k views

How to make Ninject inject an MVC view model?

How do I configure Ninject so it injects an instance in a view model? PS. It is an abstracted service to help with validation, so I am not trying to burden the model with too much responsibilities.
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  • 3,538
12 votes
3 answers
5k views

IValidatableObject vs Single Responsibility

I like the extnesibility point of MVC, allowing view models to implement IValidatableObject, and add custom validation. I try to keep my Controllers lean, having this code be the only validation ...
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  • 3,538
13 votes
3 answers
5k views

Validation and authorization in layered architecture

I know you are thinking (or maybe yelling), "not another question asking where validation belongs in a layered architecture?!?" Well, yes, but hopefully this will be a little bit of a different take ...
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  • 2,845
4 votes
1 answer
1k views

Dapper and object validation/business rules enforcement

This isn't really Dapper-specific, actually, as it relates to any XML-serializeable object.. but it came up when I was storing an object using Dapper. Anyways, say I have a user class. Normally, I'd ...
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  • 451
5 votes
5 answers
1k views

Is realtime validation of username good or bad?

I have a simple form for the user to sign up to my site; with email, username and password fields. We are now trying to implement an ajax validation so the user doesn't have to post the form to find ...
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2 votes
2 answers
107 views

Standard way of allowing general XML data

I'm writing a data gathering and reporting application that takes XML files as input, which will then be read, processed, and stored in a strongly-typed database. For example, an XML file for a "Job" ...
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  • 1,824
2 votes
3 answers
1k views

Validating allowed characters or validating disallowed characters

I've always validated my user input based on a list of valid/allowed characters, rather than a list of invalid/disallowed characters (or simply no validation). It's just a habit I picked up, probably ...
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  • 834
2 votes
1 answer
1k views

DDD and validation of aggregate root

Suppose an aggregate root : MailConfiguration (wrapping an AddressPart object). The AddressPart object is a simple immutable value object with some fields like senderAdress, recipentAddress (to make ...
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  • 3,748
2 votes
1 answer
167 views

Ensure data entered by users adjusts to what actually is

This is more of a usability issue I'd say, looking of suggestions on it. I have a system that depends on the data entered by the users to be correct, as in the address exists, the name is correct, ...
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  • 123
7 votes
3 answers
438 views

How to measure external quality of software

For my thesis, I am doing research into the characteristics of Behavior Driven Development (BDD). One of the BDD claims is that by specifying the requirements in a ubiquitous language together with ...
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1 vote
1 answer
138 views

validating APIs

We have a series of hardware and we have decided on a common API to be given to the customer for use. The customer will use this API in order to program the hardware. The API includes functions for ...
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4 votes
2 answers
118 views

Would it be hard to screen form submissions (e.g., comments) for non-words/non-sentences?

I've been thinking a lot lately about the need for better form security, and good ways to accomplish that. We currently use captcha codes to screen for bots, but that's annoying to users and may not ...
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17 votes
4 answers
818 views

Is validating HTML a thing of the past? [duplicate]

With us moving continually closer to HTML5 in terms of adoption, is writing HTML for validity something the web is rejecting, allowing us to straddle standards as the web continues to be in a ...
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2 votes
2 answers
4k views

MVC Validation with ModelState.isValid through a wizard

I'm working on a small educational project on MVC 3, and I'm facing a small problem, when attempting to handle validation in my application through a wizard. I tried to get benefit from the ability ...
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4 votes
1 answer
1k views

How much data validation is too much? [duplicate]

Possible Duplicate: Data input validation - Where? How much? I'm a new PHP developer and am into Powershell quite a bit but this question is language agnostic. I've been questioning my code quite ...
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47 votes
4 answers
23k views

Where we should put validation for domain model

I still looking best practice for domain model validation. Is that good to put the validation in constructor of domain model ? my domain model validation example as follows: public class Order { ...
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4 votes
2 answers
262 views

When and how much should we validate input when working with (C)AP storage?

Herein, we consider a server-client architecture. Suppose we keep the details flexible, but there's more than one layer of servers supporting our hypothetical service. The general question is "When ...
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11 votes
2 answers
7k views

Command handlers and DDD

I have an ASP.NET MVC application, that uses a query service to get data and a command service to send commands. My question is about the command part. If a request comes in, the command service uses ...
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  • 333
4 votes
2 answers
540 views

What is the best way to validate the following data?

Lets say I receive an xml request that is sent to my web service and this request contains some data in it such as Hotel Room/Rate pairs (Room = Double Queen, Rate = 10%). The database has all of ...
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  • 147
3 votes
1 answer
343 views

How can I use Windows Workflow for validation of a Silverlight application?

I want to use Windows Workflow to provide a validation service. The validation that will be provided may have multiple tiers with chaining and redirecting to other stages of validation. The ...
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  • 223
13 votes
6 answers
13k views

How should I handle invalid user input?

I have been thinking about this issue for a while and I would be curious to have opinions from other developers. I tend to have a very defensive style of programming. My typical block or method looks ...
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  • 19.1k
2 votes
3 answers
212 views

Do you do any validation on directories when recursively deleting them?

How do you recursively delete paths of the data that your app created? The deleting process itself is trivial. The question is, do you do extra validation? And if so, what kind? From one point of ...
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  • 6,970
6 votes
5 answers
3k views

In a web application backed by a database, how often should I validate data? [duplicate]

Possible Duplicate: Data input validation - Where? How much? Given that I have a web application with a user facing form that will store information in a database (that will be used by other ...
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  • 2,577