Platformability

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  Benchmarking Liberator to 100,000 users

  Martin Tyler 1:51 pm on 14th May, 2010 | 0 Permalink | Reply
  Tags: Ajax Testing, Comet (23), Real-time web (23)

  As I mentioned on my previous blog – Comet Servers for a Single-Dealer Platform (SDP) I am performing some new benchmarks for Liberator. These are going to focus on some new things as well as some new figures for our traditional scenarios.

  Amongst the new benchmarks will be some tests for publishing from the client, which is key for trading applications, and also benchmarking our container objects. A container is an object that represents a dynamic list of references to other data. Subscribing to the container automatically subscribes the client to its contents. Containers also allow you to subscribe to a subset, allowing efficient display of huge lists. The platform allows containers to be created dynamically based on filter and/or sort criteria too.
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  The beauty of small tests

  Andrew Darnell 12:53 pm on 15th April, 2010 | 0 Permalink | Reply
  Tags: Agile (14), Ajax Testing, Dev Tips (4), Software Engineering (20), Test Driven Development (5), Unit Testing (5)

  When tests are small, a test failure means just one thing – somewhere in these ten lines of code which are being tested, there is an error.  Ok, sometimes this can mean that there is an error in the test script, or a there is a failure, or change of expectation, but fundamentally, it pin-points the cause of the failure to a small target, which usually means that debugging becomes trivial.

  When an end to end acceptance test fails, the failure could be due to any one of a large number of source lines or expectations changes across a large body of code.  Debugging may be quick, but often isn’t.

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  SPA 2010 conference proposals

  Patrick Myles 4:53 pm on 4th November, 2009 | 0 Permalink | Reply
  Tags: Agile (14), Ajax Testing, Comet (23), conference, Real-time web (23), Software Engineering (20), User Experience (12), UX (14)

  The SPA conference is always a great event with lots of interesting sessions and a good mix of people in attendence.

  Following a succesful session that Andrew MacLeod and I ran at last year’s conference (building an automated browser testing framework using Selenium), a couple of proposals have been put in by Caplin’s staff for next year’s conference in May:

  Sarah Lawfull and Duncan Brown have proposed “Persona-driven development – can it work for you?”.

  Adam Iley and Phil Leggetter have proposed “Comet, Twitter and the Real-Time Web”

  Fingers crossed they’ll be accepted – if they are we’ll post some more info on the contents nearer the time.
   
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  Silverlight for single dealer portals?

  Patrick Myles 11:35 am on 9th June, 2009 | 0 Permalink | Reply
  Tags: ajax (13), Ajax Testing, Financial Ajax (5), Flex (7), Real-time web (23), Silverlight (6), Software Engineering (20)

  Could it be that the time for Silverlight in finance has come? Does Adobe Flex solve any of the complexities of building web applications? Where does Caplin Trader fit in to this landscape? These are all questions that I am hearing (and asking) increasingly at the moment – so here’s how I see it…

  

  There has been a big push from Adobe towards using Flex (and to a lesser extent LiveCycle Data Services – their messaging product) for trading portals and you can certainly build a flashy offering, as can be seen in the recent launch of Morgan Stanley’s Matrix.

  But questions still remain over the ease of development and deployment of such a large-scale enterprise application, and though the Flex Builder seems to make this easier, digging beneath the surface can make for a frustrating experience, as Alex Vandeberg’s excellent analysis recently described.

  Could Silverlight be an answer to this?

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  How to dynamically create a class definition for use with Mock4JS

  Phil Leggetter 6:00 pm on 16th April, 2009 | 1 Permalink | Reply
  Tags: ajax (13), Ajax Testing, JavaScript (8), Mock4JS (2), Software Engineering (20), Test Driven Development (5), Unit Testing (5)

  Mock4JS is a really useful unit testing helper library that allows you to create mocks of your JavaScript classes. What it doesn’t presently support is mocking of objects that you can’t create an instance of yourself using new Class() or of objects that are dynamically created and have functions appended to them.

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  SPA 2009 Conference - Testing Ajax Applications through the GUI

  Andrew MacLeod 6:13 pm on 15th April, 2009 | 0 Permalink | Reply
  Tags: Ajax Testing, Comet (23), Software Engineering (20)

  Last week myself and Patrick Myles, Caplin’s Head of Engineering, presented a workshop session at the SPA 2009 conference on Testing Ajax Applications through the GUI.

  The main theme of the talk was to demonstrate that, by building a thin business-domain framework on top of Selenium and structuring test cases appropriately, it’s possible to construct a very simple DSL that makes test scripts intelligible to non-programmers.

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