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  • Using IIS Logs for Performance Testing with Visual Studio

    - by Tarun Arora
    In this blog post I’ll show you how you can play back the IIS Logs in Visual Studio to automatically generate the web performance tests. You can also download the sample solution I am demo-ing in the blog post. Introduction Performance testing is as important for new websites as it is for evolving websites. If you already have your website running in production you could mine the information available in IIS logs to analyse the dense zones (most used pages) and performance test those pages rather than wasting time testing & tuning the least used pages in your application. What are IIS Logs To help with server use and analysis, IIS is integrated with several types of log files. These log file formats provide information on a range of websites and specific statistics, including Internet Protocol (IP) addresses, user information and site visits as well as dates, times and queries. If you are using IIS 7 and above you will find the log files in the following directory C:\Interpub\Logs\ Walkthrough 1. Download and Install Log Parser from the Microsoft download Centre. You should see the LogParser.dll in the install folder, the default install location is C:\Program Files (x86)\Log Parser 2.2. LogParser.dll gives us a library to query the iis log files programmatically. By the way if you haven’t used Log Parser in the past, it is a is a powerful, versatile tool that provides universal query access to text-based data such as log files, XML files and CSV files, as well as key data sources on the Windows operating system such as the Event Log, the Registry, the file system, and Active Directory. More details… 2. Create a new test project in Visual Studio. Let’s call it IISLogsToWebPerfTestDemo.   3.  Delete the UnitTest1.cs class that gets created by default. Right click the solution and add a project of type class library, name it, IISLogsToWebPerfTestEngine. Delete the default class Program.cs that gets created with the project. 4. Under the IISLogsToWebPerfTestEngine project add a reference to Microsoft.VisualStudio.QualityTools.WebTestFramework – c:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE\PublicAssemblies\Microsoft.VisualStudio.QualityTools.WebTestFramework.dll LogParser also called MSUtil - c:\users\tarora\documents\visual studio 2010\Projects\IisLogsToWebPerfTest\IisLogsToWebPerfTestEngine\obj\Debug\Interop.MSUtil.dll 5. Right click IISLogsToWebPerfTestEngine project and add a new classes – IISLogReader.cs The IISLogReader class queries the iis logs using the log parser. using System; using System.Collections.Generic; using System.Text; using MSUtil; using LogQuery = MSUtil.LogQueryClassClass; using IISLogInputFormat = MSUtil.COMIISW3CInputContextClassClass; using LogRecordSet = MSUtil.ILogRecordset; using Microsoft.VisualStudio.TestTools.WebTesting; using System.Diagnostics; namespace IisLogsToWebPerfTestEngine { // By making use of log parser it is possible to query the iis log using select queries public class IISLogReader { private string _iisLogPath; public IISLogReader(string iisLogPath) { _iisLogPath = iisLogPath; } public IEnumerable<WebTestRequest> GetRequests() { LogQuery logQuery = new LogQuery(); IISLogInputFormat iisInputFormat = new IISLogInputFormat(); // currently these columns give us suffient information to construct the web test requests string query = @"SELECT s-ip, s-port, cs-method, cs-uri-stem, cs-uri-query FROM " + _iisLogPath; LogRecordSet recordSet = logQuery.Execute(query, iisInputFormat); // Apply a bit of transformation while (!recordSet.atEnd()) { ILogRecord record = recordSet.getRecord(); if (record.getValueEx("cs-method").ToString() == "GET") { string server = record.getValueEx("s-ip").ToString(); string path = record.getValueEx("cs-uri-stem").ToString(); string querystring = record.getValueEx("cs-uri-query").ToString(); StringBuilder urlBuilder = new StringBuilder(); urlBuilder.Append("http://"); urlBuilder.Append(server); urlBuilder.Append(path); if (!String.IsNullOrEmpty(querystring)) { urlBuilder.Append("?"); urlBuilder.Append(querystring); } // You could make substitutions by introducing parameterized web tests. WebTestRequest request = new WebTestRequest(urlBuilder.ToString()); Debug.WriteLine(request.UrlWithQueryString); yield return request; } recordSet.moveNext(); } Console.WriteLine(" That's it! Closing the reader"); recordSet.close(); } } }   6. Connect the dots by adding the project reference ‘IisLogsToWebPerfTestEngine’ to ‘IisLogsToWebPerfTest’. Right click the ‘IisLogsToWebPerfTest’ project and add a new class ‘WebTest1Coded.cs’ The WebTest1Coded.cs inherits from the WebTest class. By overriding the GetRequestMethod we can inject the log files to the IISLogReader class which uses Log parser to query the log file and extract the web requests to generate the web test request which is yielded back for play back when the test is run. namespace IisLogsToWebPerfTest { using System; using System.Collections.Generic; using System.Text; using Microsoft.VisualStudio.TestTools.WebTesting; using Microsoft.VisualStudio.TestTools.WebTesting.Rules; using IisLogsToWebPerfTestEngine; // This class is a coded web performance test implementation, that simply passes // the path of the iis logs to the IisLogReader class which does the heavy // lifting of reading the contents of the log file and converting them to tests. // You could have multiple such classes that inherit from WebTest and implement // GetRequestEnumerator Method and pass differnt log files for different tests. public class WebTest1Coded : WebTest { public WebTest1Coded() { this.PreAuthenticate = true; } public override IEnumerator<WebTestRequest> GetRequestEnumerator() { // substitute the highlighted path with the path of the iis log file IISLogReader reader = new IISLogReader(@"C:\Demo\iisLog1.log"); foreach (WebTestRequest request in reader.GetRequests()) { yield return request; } } } }   7. Its time to fire the test off and see the iis log playback as a web performance test. From the Test menu choose Test View Window you should be able to see the WebTest1Coded test show up. Highlight the test and press Run selection (you can also debug the test in case you face any failures during test execution). 8. Optionally you can create a Load Test by keeping ‘WebTest1Coded’ as the base test. Conclusion You have just helped your testing team, you now have become the coolest developer in your organization! Jokes apart, log parser and web performance test together allow you to save a lot of time by not having to worry about what to test or even worrying about how to record the test. If you haven’t already, download the solution from here. You can take this to the next level by using LogParser to extract the log files as part of an end of day batch to a database. See the usage trends by user this solution over a longer term and have your tests consume the web requests now stored in the database to generate the web performance tests. If you like the post, don’t forget to share … Keep RocKiNg!

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  • Printing PowerPoint slides in black and white

    - by John Paul Cook
    When I do SQL Server training, sometimes students want to print all of the PowerPoint slides and use them for note taking during class. For such purposes, the background is usually better off being suppressed. This is most efficiently done by changing Print Settings as shown below: Personally I recommend that people take notes directly in the slides instead of printing them. PowerPoint has a notes area. If you do want to print slides and notes, once again use the Print Settings to specify this:...(read more)

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  • Printing PowerPoint slides in black and white

    - by John Paul Cook
    When I do SQL Server training, sometimes students want to print all of the PowerPoint slides and use them for note taking during class. For such purposes, the background is usually better off being suppressed. This is most efficiently done by changing Print Settings as shown below: Personally I recommend that people take notes directly in the slides instead of printing them. PowerPoint has a notes area. If you do want to print slides and notes, once again use the Print Settings to specify this:...(read more)

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  • Black Techniques Of SEO

    Search Engine Optimization, or more popularity known as SEO, is one of the most popular types of Internet marketing techniques used by many webmasters today. It is used not only to market their brand... [Author: Margarette Mcbride - Web Design and Development - June 10, 2010]

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  • Avoiding the Black Hole of Leads

    - by Charles Knapp
    Sales says, "Marketing doesn’t deliver enough qualified leads. So, we generate 90% of our own leads." Meanwhile, Marketing says, "We generate most of the leads. But, Sales doesn’t contact them quickly enough, while the lead is still interested." According to Sirius Decisions: Up to 90% of leads never make it to closure Sales works on only 11% of the leads supplied by Marketing Only 18% of the leads Sales accepts convert to opportunities Yet, 45% of prospects typically buy a product from someone within 12 months The root cause of these commonplace complaints is a disconnect between the funnels of marketing and sales. Unfortunately, we often see companies with an assortment of poorly integrated marketing tools. It takes too long and too many people to move the data around, scrub it, upload it from one system to another, and get it routed to the right sales teams. As a result, leads fall through the cracks, contextual information is lost, and by the time sales actually contacts a customer it may be too late. Sales automation alone is not enough. Marketing automation (including social) is not enough. Sales and Marketing must work together. It’s time to connect the silos of marketing and sales pipelines and analytics. It’s time for integrated Sales and Marketing automation. Integrated pipelines improve lead quality and timeliness. Marketing systems can track a rich set of contextual information about a prospect–self-disclosed information about interests, content viewed, and so on. This insight can equip the sales rep with rich information to make a face-to-face conversation more relevant and more likely to convert to the next stage in the sales process. Integrated lead to revenue (LTR) management provides end-to-end visibility, enabling the company to measure what is working. Marketing can measure its impact on revenue and other business outcomes, and sales can harness and redirect marketing investments to areas where they most help achieve sales objectives. It’s a win-win play. Marketing delivers more leads that are qualified, cuts cost per lead, and demonstrates a strong Return on Marketing Investment (ROMI). Sales spends more time with warm leads and less time on cold calls, achieves higher close rates, and delivers more revenue. Learn more by attending our Integrated Sales and Marketing session at the upcoming CloudWorld conferences. Or, visit our Sales and Marketing Cloud Service site for videos and other learning resources.

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  • Black login screen Ubuntu 12.04 if WGA cable pluged in on reboot

    - by Sulliwane
    I'm using Ubuntu 12.04.1, 64 bits, installed on a Z77 Pro4 (ASrock motherboard), crucial M4 SSD drive (sata 3), and intel i5 3570k (ivy bridge). I have this annoying problem : When I startup the computer, I get a CLI login prompt : At this moment, if I press enter, i get the usual CLI login prompt. If not, here is what I get : From now, if I login using CLI, i identify the lightdm processus, kill and start it : #ps -A | grep lightdm #sudo kill -9 1273 #sudo lightdm and miracle, these commands bring back the gui login screen. BUT It's very annoying as I have to repeat these steps at every boot, and the people using this desktop are not familiar with linux at all! So I tried to figure out the cause and here is what I found : If, when I shutdown the computer, the WGA cable is not pluged in, then Ubuntu will boot on GUI login screen without a glitch! But If the WGA cable is pluged in when shuting down, I will get CLI login prompt... Note 1: I installed linux kernel 3.4, but it hasn't solve the problem. Note 2: Is it linked to the new HD 4000 integrated graphic processor ? Note 3: If i boot on an USB stick (Ubuntu 12.04), NO problems ! Note 4: If booting on the SSD, when clicking "shutdown" button, the shutdown process never ends up (logout screen keep displaying and fans are still rolling). But if booting on USB stick, the shutdown action runs properly.

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  • SQL Server Unit Testing with tSQLt

    When one considers the amount of time and effort that Unit Testing consumes for the Database Developer, is surprising how few good SQL Server Test frameworks are around. tSQLt , which is open source and free to use, is one of the frameworks that provide a simple way to populate a table with test data as part of the unit test, and check the results with what should be expected. Sebastian Meine and Dennis Lloyd, who created tSQLt, explain

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  • How to activate a dialogue box on suspend?

    - by don.joey
    I am using 14.04 with unity. Quite regularly it happens to me that I want to shutdown the computer, but in the right corner menu I accidently hit Suspend in stead of Shutdown. Is it possible to add a dialogue box on the suspend menu? So that I don't always have to come back from suspend to finally shutdown afterwards. Or is it possible to make the shutdown button like 3 times bigger than the suspend button?

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  • From the Tips Box: Free Shipping with Amazon Filler, Repairing Ethernet Cables, and Emergency Stickers

    - by Jason Fitzpatrick
    Once a week we round up some great tips from the tips box and share them with everyone. This week we’re looking at easy Amazon filler items, repairing the tab on Ethernet cable connectors, and a humorous data-security sticker. How to Own Your Own Website (Even If You Can’t Build One) Pt 1 What’s the Difference Between Sleep and Hibernate in Windows? Screenshot Tour: XBMC 11 Eden Rocks Improved iOS Support, AirPlay, and Even a Custom XBMC OS

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  • Testing the Effectiveness of Your Web Marketing Strategies

    Web marketing is a great option to choose when seeking to establish an online customer base for your product. Yet there is more than just advertising, marketing and generating SEO content for your site as all these strategies could fail to generate sales for your product. Given that e-commerce is a dynamic, ever changing business platform, it is important that an online business owner keeps testing the effectiveness of their online marketing strategies.

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  • SQL Server Unit Testing with tSQLt

    When one considers the amount of time and effort that Unit Testing consumes for the Database Developer, is surprising how few good SQL Server Test frameworks are around. tSQLt , which is open source and free to use, is one of the frameworks that provide a simple way to populate a table with test data as part of the unit test, and check the results with what should be expected. Sebastian and Dennis, who created tSQLt, explain.

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  • How to access shared folder in Virtual Box

    - by alsadi90
    I followed the steps for sharing folders between windows 7 and Ubuntu in virtual box. but the folder appear with X sign and give me the following message when open it "the folder conent could not be displayed" and when choose "shared folder" from "Device" menu the following is written below "on the system page , you have asigned more than 50% of your computer's memory (2.93) to the virtual machine ...

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  • Agile team with no dedicated Tester members. Insane or efficient?

    - by MetaFight
    I'm a software developer. I've been thinking a lot about the efficiency of the Software Testers I've worked with so far in my career. In fact, I've been thinking a lot about the Software Testers role in general and have reached a potentially contentious conclusion: Non-developer Software Testers staff are less efficient at software testing than developers. Now, before everyone gets upset, hear me out. This isn't mere opinion: Software Testing and Software Development both require a lot of skills in common: Problem solving Thinking about corner cases Analytical skills The ability to define clear and concise step-by-step scenarios What developers have in addition to this is the ability to automate their tests. Yes, I know non-dev testers can automate their tests too, but that often then becomes a test maintenance issue. Because automating UI tests is essentially programming, non-dev members encounter all the same difficulties software developers encounter: Copy-pasta, lack of code reusibility/maintainability, etc. So, I was wondering. Why not replace all non-dev roles with developer roles? Developers have the skills required to perform Software Testing tasks, and they have the skills to automate tests and keep them maintainable. Would the following work: Hire a bunch of developers and split them into 2 roles: Software developers Software developers doing testing (some manual, mostly automated by writing integration tests, unit tests, etc) Software developers doing application support. (I've removed this as it is probably a separate question altogether) And, in our case since we're doing Agile development, rotate the roles every sprint or two. Also, if at all possible, try to have people spend their Developer stints and Testing stints on different projects. Ideally you would want to reduce the turnover rate per rotation. So maybe you could have 2 groups and make sure the rotation cycles of the groups are elided. So, for example, if each rotation was two sprints long, the two groups would have their rotations 1 sprint apart. That way there's only a 50% turn-over rate per sprint. Am I crazy, or could this work? (Obviously a key component to this working is that all devs want to be in the 3 roles. Let's assume I'm starting a new company and I can hire these ideal people) Edit I've removed the phrase "QA", as apparently we are using it incorrectly where I work.

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  • The width of items in select box is different in IE 8, Firefox and Google Chrome

    - by Purushotham
    I have a problem with the select box in my application. I specified some width to the select box. The width of some of the items in the select box is more than the actual width of the select box. Each browser is treating it differently. I can see a shrink of the select box items in IE 8. Whereas google chrome and firefox takes the maximum width of the items in the select box. I want to control the width of the select box. Is there any way to do this ?

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  • Creating a Box Control over an area of the map with OpenLayers

    - by Bernie Perez
    I am using OpenLayers to create a box of interest with my program. I am using this code: var control = new OpenLayers.Control(); OpenLayers.Util.extend(control, { draw: function () { this.box = new OpenLayers.Handler.Box( control, {"done": this.notice}, {keyMask: OpenLayers.Handler.MOD_SHIFT}); this.box.activate(); }, notice: function (bounds) { areaSelected(bounds); } }); map.addControl(control); to capture the "Shift Create a Box" control and use the area selected as my area of interest. However the values come back as pixels. But I want Longitude and Latitude, not pixels. The Mouse Position control does show the correct long & lat. I really don't care how to box is created, I just want an easy way for the user to select a area of the map and I need to get the lat & longs of the area. (Box, Circle, doesn't matter)

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  • Is JBehave a good choice for Web Service Automated Testing?

    - by Vanchinathan
    Hi All, We have a requirement at my workplace to automate the webservice testing. We have been using QTP scripts to do so. We as a team, Kind of leaning towards Jbehave as a choice. Is JBehave a good choice for web service functional testing automation? We do use Soap UI to test manually. But we are planning to automate the functional and regression testing to reduce the release cycle time. Suggestions welcome.

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  • Cucumber vs. built-in testing? [Rails]

    - by yuval
    I asked a question about different testing frameworks yesterday. This question can be found here. Now that I have a better understanding of the different frameworks, I have a very simple question: With a basic understanding, but very limited experience with writing tests with rails' built in testing framework (basic assertions), would it be okay for me to jump directly to testing with RSpec, Webrat, and Cucumber? Thank you! As a side note: yes, this is an opinion based question, but I feel that the input received to this question is valuable enough to the community to keep this question open. Thanks.

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  • Pro's and Con's of unit testing after the fact.

    - by scope-creep
    I have a largish complex app around 27k lines. Its essentially a rule drive multithreaded processing engine, without giving too much away Its been partially tested as it's been built, certain components. Question I have, is what is the pro's and con's of doing unit testing on after the fact, so to speak, after its been implemented. It is clear that traditional testing is going to take 2-3+ months to test every facet, and it all needs to work, and that time is not available really. I've done a fair bit of unit testing in the past, but generally it's been on desktop automation or LOB apps, which are fairly simple. The app is itself is highly componentized internally, interface driven really. I've not decided on what particular framework to use. Any advice would be appreciated. What say you.

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  • Solution: Testing Web Services with MSTest on Team Build

    - by Martin Hinshelwood
    Guess what. About 20 minutes after I fixed the build, Allan broke it again! Update: 4th March 2010 – After having huge problems getting this working I read Billy Wang’s post which showed me the light. The problem here is that even though the test passes locally it will not during an Automated Build. When you send your tests to the build server it does not understand that you want to spin up the web site and run tests against that! When you run the test in Visual Studio it spins up the web site anyway, but would you expect your test to pass if you told the website not to spin up? Of course not. So, when you send the code to the build server you need to tell it what to spin up. First, the best way to get the parameters you need is to right click on the method you want to test and select “Create Unit Test”. This will detect wither you are running in IIS or ASP.NET Development Server or None, and create the relevant tags. Figure: Right clicking on “SaveDefaultProjectFile” will produce a context menu with “Create Unit tests…” on it. If you use this option it will AutoDetect most of the Attributes that are required. /// <summary> ///A test for SSW.SQLDeploy.SilverlightUI.Web.Services.IProfileService.SaveDefaultProjectFile ///</summary> // TODO: Ensure that the UrlToTest attribute specifies a URL to an ASP.NET page (for example, // http://.../Default.aspx). This is necessary for the unit test to be executed on the web server, // whether you are testing a page, web service, or a WCF service. [TestMethod()] [HostType("ASP.NET")] [AspNetDevelopmentServerHost("D:\\Workspaces\\SSW\\SSW\\SqlDeploy\\DEV\\Main\\SSW.SQLDeploy.SilverlightUI.Web", "/")] [UrlToTest("http://localhost:3100/")] [DeploymentItem("SSW.SQLDeploy.SilverlightUI.Web.dll")] public void SaveDefaultProjectFileTest() { IProfileService target = new ProfileService(); // TODO: Initialize to an appropriate value string strComputerName = string.Empty; // TODO: Initialize to an appropriate value bool expected = false; // TODO: Initialize to an appropriate value bool actual; actual = target.SaveDefaultProjectFile(strComputerName); Assert.AreEqual(expected, actual); Assert.Inconclusive("Verify the correctness of this test method."); } Figure: Auto created code that shows the attributes required to run correctly in IIS or in this case ASP.NET Development Server If you are a purist and don’t like creating unit tests like this then you just need to add the three attributes manually. HostType – This attribute specified what host to use. Its an extensibility point, so you could write your own. Or you could just use “ASP.NET”. UrlToTest – This specifies the start URL. For most tests it does not matter which page you call, as long as it is a valid page otherwise your test may not run on the server, but may pass anyway. AspNetDevelopmentServerHost – This is a nasty one, it is only used if you are using ASP.NET Development Host and is unnecessary if you are using IIS. This sets the host settings and the first value MUST be the physical path to the root of your web application. OK, so all that was rubbish and I could not get anything working using the MSDN documentation. Google provided very little help until I ran into Billy Wang’s post  and I heard that heavenly music that all developers hear when understanding dawns that what they have been doing up until now is just plain stupid. I am sure that the above will work when I am doing Web Unit Tests, but there is a much easier way when doing web services. You need to add the AspNetDevelopmentServer attribute to your code. This will tell MSTest to spin up an ASP.NET Development server to host the service. Specify the path to the web application you want to use. [AspNetDevelopmentServer("WebApp1", "D:\\Workspaces\\SSW\\SSW\\SqlDeploy\\DEV\\Main\\SSW.SQLDeploy.SilverlightUI.Web")] [DeploymentItem("SSW.SQLDeploy.SilverlightUI.Web.dll")] [TestMethod] public void ProfileService_Integration_SaveDefaultProjectFile_Returns_True() { ProfileServiceClient target = new ProfileServiceClient(); bool isTrue = target.SaveDefaultProjectFile("Mav"); Assert.AreEqual(true, isTrue); } Figure: This AspNetDevelopmentServer will make sure that the specified web application is launched. Now we can run the test and have it pass, but if the dynamically assigned ASP.NET Development server port changes what happens to the details in your app.config that was generated when creating a reference to the web service? Well, it would be wrong and the test would fail. This is where Billy’s helper method comes in. Once you have created an instance of your service call, and it has loaded the config, but before you make any calls to it you need to go in and dynamically set the Endpoint address to the same address as your dynamically hosted Web Application. using System; using System.Collections.Generic; using System.Linq; using System.Text; using Microsoft.VisualStudio.TestTools.UnitTesting; using System.Reflection; using System.ServiceModel.Description; using System.ServiceModel; namespace SSW.SQLDeploy.Test { class WcfWebServiceHelper { public static bool TryUrlRedirection(object client, TestContext context, string identifier) { bool result = true; try { PropertyInfo property = client.GetType().GetProperty("Endpoint"); string webServer = context.Properties[string.Format("AspNetDevelopmentServer.{0}", identifier)].ToString(); Uri webServerUri = new Uri(webServer); ServiceEndpoint endpoint = (ServiceEndpoint)property.GetValue(client, null); EndpointAddressBuilder builder = new EndpointAddressBuilder(endpoint.Address); builder.Uri = new Uri(endpoint.Address.Uri.OriginalString.Replace(endpoint.Address.Uri.Authority, webServerUri.Authority)); endpoint.Address = builder.ToEndpointAddress(); } catch (Exception e) { context.WriteLine(e.Message); result = false; } return result; } } } Figure: This fixes a problem with the URL in your web.config not being the same as the dynamically hosted ASP.NET Development server port. We can now add a call to this method after we created the Proxy object and change the Endpoint for the Service to the correct one. This process is wrapped in an assert as if it fails there is no point in continuing. [AspNetDevelopmentServer("WebApp1", D:\\Workspaces\\SSW\\SSW\\SqlDeploy\\DEV\\Main\\SSW.SQLDeploy.SilverlightUI.Web")] [DeploymentItem("SSW.SQLDeploy.SilverlightUI.Web.dll")] [TestMethod] public void ProfileService_Integration_SaveDefaultProjectFile_Returns_True() { ProfileServiceClient target = new ProfileServiceClient(); Assert.IsTrue(WcfWebServiceHelper.TryUrlRedirection(target, TestContext, "WebApp1")); bool isTrue = target.SaveDefaultProjectFile("Mav"); Assert.AreEqual(true, isTrue); } Figure: Editing the Endpoint from the app.config on the fly to match the dynamically hosted ASP.NET Development Server URL and port is now easy. As you can imagine AspNetDevelopmentServer poses some problems of you have multiple developers. What are the chances of everyone using the same location to store the source? What about if you are using a build server, how do you tell MSTest where to look for the files? To the rescue is a property called" “%PathToWebRoot%” which is always right on the build server. It will always point to your build drop folder for your solutions web sites. Which will be “\\tfs.ssw.com.au\BuildDrop\[BuildName]\Debug\_PrecompiledWeb\” or whatever your build drop location is. So lets change the code above to add this. [AspNetDevelopmentServer("WebApp1", "%PathToWebRoot%\\SSW.SQLDeploy.SilverlightUI.Web")] [DeploymentItem("SSW.SQLDeploy.SilverlightUI.Web.dll")] [TestMethod] public void ProfileService_Integration_SaveDefaultProjectFile_Returns_True() { ProfileServiceClient target = new ProfileServiceClient(); Assert.IsTrue(WcfWebServiceHelper.TryUrlRedirection(target, TestContext, "WebApp1")); bool isTrue = target.SaveDefaultProjectFile("Mav"); Assert.AreEqual(true, isTrue); } Figure: Adding %PathToWebRoot% to the AspNetDevelopmentServer path makes it work everywhere. Now we have another problem… this will ONLY run on the build server and will fail locally as %PathToWebRoot%’s default value is “C:\Users\[profile]\Documents\Visual Studio 2010\Projects”. Well this sucks… How do we get the test to run on any build server and any developer laptop. Open “Tools | Options | Test Tools | Test Execution” in Visual Studio and you will see a field called “Web application root directory”. This is where you override that default above. Figure: You can override the default website location for tests. In my case I would put in “D:\Workspaces\SSW\SSW\SqlDeploy\DEV\Main” and all the developers working with this branch would put in the folder that they have mapped. Can you see a problem? What is I create a “$/SSW/SqlDeploy/DEV/34567” branch from Main and I want to run tests in there. Well… I would have to change the value above. This is not ideal, but as you can put your projects anywhere on a computer, it has to be done. Conclusion Although this looks convoluted and complicated there are real problems being solved here that mean that you have a test ANYWHERE solution. Any build server, any Developer workstation. Resources: http://billwg.blogspot.com/2009/06/testing-wcf-web-services.html http://tough-to-find.blogspot.com/2008/04/testing-asmx-web-services-in-visual.html http://msdn.microsoft.com/en-us/library/ms243399(VS.100).aspx http://blogs.msdn.com/dscruggs/archive/2008/09/29/web-tests-unit-tests-the-asp-net-development-server-and-code-coverage.aspx http://www.5z5.com/News/?543f8bc8b36b174f Technorati Tags: VS2010,MSTest,Team Build 2010,Team Build,Visual Studio,Visual Studio 2010,Visual Studio ALM,Team Test,Team Test 2010

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  • GuestPost: Unit Testing Entity Framework (v1) Dependent Code using TypeMock Isolator

    - by Eric Nelson
    Time for another guest post (check out others in the series), this time bringing together the world of mocking with the world of Entity Framework. A big thanks to Moses for agreeing to do this. Unit Testing Entity Framework Dependent Code using TypeMock Isolator by Muhammad Mosa Introduction Unit testing data access code in my opinion is a challenging thing. Let us consider unit tests and integration tests. In integration tests you are allowed to have environmental dependencies such as a physical database connection to insert, update, delete or retrieve your data. However when performing unit tests it is often much more efficient and productive to remove environmental dependencies. Instead you will need to fake these dependencies. Faking a database (also known as mocking) can be relatively straight forward but the version of Entity Framework released with .Net 3.5 SP1 has a number of implementation specifics which actually makes faking the existence of a database quite difficult. Faking Entity Framework As mentioned earlier, to effectively unit test you will need to fake/simulate Entity Framework calls to the database. There are many free open source mocking frameworks that can help you achieve this but it will require additional effort to overcome & workaround a number of limitations in those frameworks. Examples of these limitations include: Not able to fake calls to non virtual methods Not able to fake sealed classes Not able to fake LINQ to Entities queries (replace database calls with in-memory collection calls) There is a mocking framework which is flexible enough to handle limitations such as those above. The commercially available TypeMock Isolator can do the job for you with less code and ultimately more readable unit tests. I’m going to demonstrate tackling one of those limitations using MoQ as my mocking framework. Then I will tackle the same issue using TypeMock Isolator. Mocking Entity Framework with MoQ One basic need when faking Entity Framework is to fake the ObjectContext. This cannot be done by passing any connection string. You have to pass a correct Entity Framework connection string that specifies CSDL, SSDL and MSL locations along with a provider connection string. Assuming we are going to do that, we’ll explore another limitation. The limitation we are going to face now is related to not being able to fake calls to non-virtual/overridable members with MoQ. I have the following repository method that adds an EntityObject (instance of a Blog entity) to Blogs entity set in an ObjectContext. public override void Add(Blog blog) { if(BlogContext.Blogs.Any(b=>b.Name == blog.Name)) { throw new InvalidOperationException("Blog with same name already exists!"); } BlogContext.AddToBlogs(blog); } The method does a very simple check that the name of the new Blog entity instance doesn’t exist. This is done through the simple LINQ query above. If the blog doesn’t already exist it simply adds it to the current context to be saved when SaveChanges of the ObjectContext instance (e.g. BlogContext) is called. However, if a blog with the same name exits, and exception (InvalideOperationException) will be thrown. Let us now create a unit test for the Add method using MoQ. [TestMethod] [ExpectedException(typeof(InvalidOperationException))] public void Add_Should_Throw_InvalidOperationException_When_Blog_With_Same_Name_Already_Exits() { //(1) We shouldn't depend on configuration when doing unit tests! But, //its a workaround to fake the ObjectContext string connectionString = ConfigurationManager .ConnectionStrings["MyBlogConnString"] .ConnectionString; //(2) Arrange: Fake ObjectContext var fakeContext = new Mock<MyBlogContext>(connectionString); //(3) Next Line will pass, as ObjectContext now can be faked with proper connection string var repo = new BlogRepository(fakeContext.Object); //(4) Create fake ObjectQuery<Blog>. Will be used to substitute MyBlogContext.Blogs property var fakeObjectQuery = new Mock<ObjectQuery<Blog>>("[Blogs]", fakeContext.Object); //(5) Arrange: Set Expectations //Next line will throw an exception by MoQ: //System.ArgumentException: Invalid setup on a non-overridable member fakeContext.SetupGet(c=>c.Blogs).Returns(fakeObjectQuery.Object); fakeObjectQuery.Setup(q => q.Any(b => b.Name == "NewBlog")).Returns(true); //Act repo.Add(new Blog { Name = "NewBlog" }); } This test method is checking to see if the correct exception ([ExpectedException(typeof(InvalidOperationException))]) is thrown when a developer attempts to Add a blog with a name that’s already exists. On (1) a connection string is initialized from configuration file. To retrieve the full connection string. On (2) a fake ObjectContext is being created. The ObjectContext here is MyBlogContext and its being created using this var fakeContext = new Mock<MyBlogContext>(connectionString); This way a fake context is being created using MoQ. On (3) a BlogRepository instance is created. BlogRepository has dependency on generate Entity Framework ObjectContext, MyObjectContext. And so the fake context is passed to the constructor. var repo = new BlogRepository(fakeContext.Object); On (4) a fake instance of ObjectQuery<Blog> is being created to use as a substitute to MyObjectContext.Blogs property as we will see in (5). On (5) setup an expectation for calling Blogs property of MyBlogContext and substitute the return result with the fake ObjectQuery<Blog> instance created on (4). When you run this test it will fail with MoQ throwing an exception because of this line: fakeContext.SetupGet(c=>c.Blogs).Returns(fakeObjectQuery.Object); This happens because the generate property MyBlogContext.Blogs is not virtual/overridable. And assuming it is virtual or you managed to make it virtual it will fail at the following line throwing the same exception: fakeObjectQuery.Setup(q => q.Any(b => b.Name == "NewBlog")).Returns(true); This time the test will fail because the Any extension method is not virtual/overridable. You won’t be able to replace ObjectQuery<Blog> with fake in memory collection to test your LINQ to Entities queries. Now lets see how replacing MoQ with TypeMock Isolator can help. Mocking Entity Framework with TypeMock Isolator The following is the same test method we had above for MoQ but this time implemented using TypeMock Isolator: [TestMethod] [ExpectedException(typeof(InvalidOperationException))] public void Add_New_Blog_That_Already_Exists_Should_Throw_InvalidOperationException() { //(1) Create fake in memory collection of blogs var fakeInMemoryBlogs = new List<Blog> {new Blog {Name = "FakeBlog"}}; //(2) create fake context var fakeContext = Isolate.Fake.Instance<MyBlogContext>(); //(3) Setup expected call to MyBlogContext.Blogs property through the fake context Isolate.WhenCalled(() => fakeContext.Blogs) .WillReturnCollectionValuesOf(fakeInMemoryBlogs.AsQueryable()); //(4) Create new blog with a name that already exits in the fake in memory collection in (1) var blog = new Blog {Name = "FakeBlog"}; //(5) Instantiate instance of BlogRepository (Class under test) var repo = new BlogRepository(fakeContext); //(6) Acting by adding the newly created blog () repo.Add(blog); } When running the above test method it will pass as the Add method of BlogRepository is going to throw an InvalidOperationException which is the expected behaviour. Nothing prevents us from faking out the database interaction! Even faking ObjectContext  at (2) didn’t require a connection string. On (3) Isolator sets up a faking result for MyBlogContext.Blogs when its being called through the fake instance fakeContext created on (2). The faking result is just an in-memory collection declared an initialized on (1). Finally at (6) action we call the Add method of BlogRepository passing a new Blog instance that has a name that’s already exists in the fake in-memory collection which we set up at (1). As expected the test will pass because it will throw the expected exception defined on top of the test method - InvalidOperationException. TypeMock Isolator succeeded in faking Entity Framework with ease. Conclusion We explored how to write a simple unit test using TypeMock Isolator for code which is using Entity Framework. We also explored a few of the limitations of other mocking frameworks which TypeMock is successfully able to handle. There are workarounds that you can use to overcome limitations when using MoQ or Rhino Mock, however the workarounds will require you to write more code and your tests will likely be more complex. For a comparison between different mocking frameworks take a look at this document produced by TypeMock. You might also want to check out this open source project to compare mocking frameworks. I hope you enjoyed this post Muhammad Mosa http://mosesofegypt.net/ http://twitter.com/mosessaur Screencast of unit testing Entity Framework Related Links GuestPost: Introduction to Mocking GuesPost: Typemock Isolator – Much more than an Isolation framework

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