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  • When is it appropriate to do interaction based testing as opposed to state based testing?

    - by Praneeth
    Hi, When I use Easymock(or a similar mocking framework) to implement my unit tests, I'm forced to do interaction-based testing (as I don't get to assert on the state of my dependencies. Or am I mistaken?). On the other hand if I use a hand written stub (instead of using easymock) I can implement state based testing. I'm quite unclear if I want to go with interaction based testing or state based testing. I'm biased and I want to use Easymock, but I'm not sure if there would be any side-effects that I may have to face in the future. Can anyone please throw some light on this? Thanks in advance!

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  • Visual Studio Shell Based Application

    - by nils_gate
    My new project would be a custom IDE for proprietary Application creation. This can be a Shell based application on VS Shell. I wanted to know what are the license requirement for these kind of applications. My question: If I create my project as VS Shell based Application, what kind of license is required by the end user of the Shell based application?

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  • Cross platform, Interactive text-based interface with command completion

    - by trojanfoe
    Does anyone know of a C++ library that will provide a text-based interactive interface? I want to create two versions of an application; a console based program that will perform whatever actions are given on the command line or interactively at the console as well as a GUI based program (Mac Cocoa and Windows MFC). Both versions will share a common C++ backend. For the console based program I would like similar history abilities to readline (which I cannot use as this application will be closed source) with command completion (Tab-activated for example). Perhaps there is something like this already available?

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  • Clojure agents consuming from a queue

    - by erikcw
    I'm trying to figure out the best way to use agents to consume items from a Message Queue (Amazon SQS). Right now I have a function (process-queue-item) that grabs an items from the queue, and processes it. I want to process these items concurrently, but I can't wrap my head around how to control the agents. Basically I want to keep all of the agents busy as much as possible without pulling to many items from the Queue and developing a backlog (I'll have this running on a couple of machines, so items need to be left in the queue until they are really needed). Can anyone give me some pointers on improving my implementation? (def active-agents (ref 0)) (defn process-queue-item [_] (dosync (alter active-agents inc)) ;retrieve item from Message Queue (Amazon SQS) and process (dosync (alter active-agents dec))) (defn -main [] (def agents (for [x (range 20)] (agent x))) (loop [loop-count 0] (if (< @active-agents 20) (doseq [agent agents] (if (agent-errors agent) (clear-agent-errors agent)) ;should skip this agent until later if it is still busy processing (not sure how) (send-off agent process-queue-item))) ;(apply await-for (* 10 1000) agents) (Thread/sleep 10000) (logging/info (str "ACTIVE AGENTS " @active-agents)) (if (> 10 loop-count) (do (logging/info (str "done, let's cleanup " count)) (doseq [agent agents] (if (agent-errors agent) (clear-agent-errors agent))) (apply await agents) (shutdown-agents)) (recur (inc count)))))

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  • NetLogo 4.1 - implementation of a motorway ( Problem creating collision of cars )

    - by user206019
    Hi there, I am trying to create a simulation of motorway and the behaviour of the drivers in NetLogo. I have some questions that I m struggling to solve. Here is my code: globals [ selected-car ;; the currently selected car average-speed ;; average speed of all the cars look-ahead ] turtles-own [ speed ;; the current speed of the car speed-limit ;; the maximum speed of the car (different for all cars) lane ;; the current lane of the car target-lane ;; the desired lane of the car change? ;; true if the car wants to change lanes patience ;; the driver's current patience max-patience ;; the driver's maximum patience ] to setup ca import-drawing "my_road3.png" set-default-shape turtles "car" crt number_of_cars [ setup-cars ] end to setup-cars set color blue set size .9 set lane (random 3) set target-lane (lane + 1) setxy round random-xcor (lane + 1) set heading 90 set speed 0.1 + random 9.9 set speed-limit (((random 11) / 10) + 1) set change? false set max-patience ((random 50) + 10) set patience (max-patience - (random 10)) ;; make sure no two cars are on the same patch loop [ ifelse any? other turtles-here [ fd 1 ] [ stop ] ;if count turtles-here > 1 ; fd 0.1 ;if ; ;ifelse (any? turtles-on neighbors) or (count turtles-here > 1) ;[ ; ifelse (count turtles-here = 1) ; [ if any? turtles-on neighbors ; [ ; if distance min-one-of turtles-on neighbors [distance myself] > 0.9 ; [stop] ; ] ; ] ; [ fd 0.1 ] ;] ;[ stop ] ] end to go drive end to drive ;; first determine average speed of the cars set average-speed ((sum [speed] of turtles) / number_of_cars) ;set-current-plot "Car Speeds" ;set-current-plot-pen "average" ;plot average-speed ;set-current-plot-pen "max" ;plot (max [speed] of turtles) ;set-current-plot-pen "min" ;plot (abs (min [speed] of turtles) ) ;set-current-plot-pen "selected-car" ;plot ([speed] of selected-car) ask turtles [ ifelse (any? turtles-at 1 0) [ set speed ([speed] of (one-of (turtles-at 1 0))) decelerate ] [ ifelse (look-ahead = 2) [ ifelse (any? turtles-at 2 0) [ set speed ([speed] of (one-of turtles-at 2 0)) decelerate ] [ accelerate if count turtles-at 0 1 = 0 and ycor < 2.5 [lt 90 fd 1 rt 90] ] ] [accelerate if count turtles-at 0 1 = 0 and ycor < 2.5 [lt 90 fd 1 rt 90] ] ] if (speed < 0.01) [ set speed 0.01 ] if (speed > speed-limit) [ set speed speed-limit ] ifelse (change? = false) [ signal ] [ change-lanes ] ;; Control for making sure no one crashes. ifelse (any? turtles-at 1 0) and (xcor != min-pxcor - .5) [ set speed [speed] of (one-of turtles-at 1 0) ] [ ifelse ((any? turtles-at 2 0) and (speed > 1.0)) [ set speed ([speed] of (one-of turtles-at 2 0)) fd 1 ] [jump speed] ] ] tick end ;; increase speed of cars to accelerate ;; turtle procedure set speed (speed + (speed-up / 1000)) end ;; reduce speed of cars to decelerate ;; turtle procedure set speed (speed - (slow-down / 1000)) end to signal ifelse (any? turtles-at 1 0) [ if ([speed] of (one-of (turtles-at 1 0))) < (speed) [ set change? true ] ] [ set change? false ] end ;; undergoes search algorithms to change-lanes ;; turtle procedure show ycor ifelse (patience <= 0) [ ifelse (max-patience <= 1) [ set max-patience (random 10) + 1 ] [ set max-patience (max-patience - (random 5)) ] set patience max-patience ifelse (target-lane = 0) [ set target-lane 1 set lane 0 ] [ set target-lane 0 set lane 1 ] ] [ set patience (patience - 1) ] ifelse (target-lane = lane) [ ifelse (target-lane = 0) [ set target-lane 1 set change? false ] [ set target-lane 0 set change? false ] ] [ ifelse (target-lane = 1) [ ifelse (pycor = 2) [ set lane 1 set change? false ] [ ifelse (not any? turtles-at 0 1) [ set ycor (ycor + 1) ] [ ifelse (not any? turtles-at 1 0) [ set xcor (xcor + 1) ] [ decelerate if (speed <= 0) [ set speed 0.1 ] ] ] ] ] [ ifelse (pycor = -2) [ set lane 0 set change? false ] [ ifelse (not any? turtles-at 0 -1) [ set ycor (ycor - 1) ] [ ifelse (not any? turtles-at 1 0) [ set xcor (xcor + 1) ] [ decelerate if (speed <= 0) [ set speed 0.1 ] ] ] ] ] ] end I know its a bit messy because I am using code from other models from the library. I want to know how to create the collision of the cars. I can't think of any idea. As you notice my agent has almost the same size as the patch (I set it to 0.9 so that you can distinguish the space between 2 cars when they are set next to each other and I round the coordinates so that they are set to the centre of the patch). In my accelerate procedure I set my agent to turn left, move 1, turn right in a loop. I want to know if there's a command that lets me make the agent jump from one lane to the other (to the patch next to it on its left) without making it turn and move. And last, if you notice the code i created the car checks the patch that is next to it on the lane on its left and the patch in front of it and the back of it. So if the 3 patches on its left are empty then it can change lane. The fuzzy part is that when i run the setup and I press Go sometimes (not always) the car goes out of the 3 basic lanes. To understand this I have 7 lanes. The middle one which I don't use which is lane 0. Then there are 3 lanes on top of lane 0 and 3 below it. So the code I am using refers to the upper 3 lanes where I set the cars but for some reason some of the cars change lane and go to lane -3 then -2 and so forth. If someone can give me a tip I would really appreciate it. Thank you in advance. Tip: if you want to try this code in netlogo keep in mind that on interface tab I have 2 buttons one setup and one go as well as 3 sliders with names: number_of_cars , speed-up , slow-down.

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  • Web based KVM management for Ubuntu

    - by Tim
    Hey all, We've got a single Ubuntu 9.10 root server on which we want to run multiple KVM virtual machines. To administer these virtual machines I'd like a web based KVM management tool, but I don't know which one to choose from the list of tools mentioned on linux-kvm.org. I've used virsh & virt-manager on my desktop, but would like a web interface for the server. I tested ConVirt on my desktop, but it failed to pickup KVM machines from virsh / virt-manager, and I could not get KVM virtual machine import to work (only Xen). oVirt looks good, but I can't find out if and how I can install it on Ubuntu 9.10.. (And I'd really rather not waste another few days on testing stuff that might not work in the end.) Can anyone recommend any good web based KVM management tools that are easy to install on Ubuntu 9.10? I'm looking for something that will also allow me to run other services like apache and postgresql besides hosting virtual machines, so preferably fairly lightweight & no dedicated OS installs. We don't need any professional clustering / migration or anything, just something that will let us create, start, inspect, administer & stop virtual machines from a web page. Best regards, Tim

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  • SketchUp: Weird regions in sketch

    - by Josh M.
    I'm using SketchUp 8.0.15158. My sketch has weird regions/lines in it that I can't explain or get rid of. I've redrawn almost the whole thing and the lines persist! See here, highlighted in yellow: These dotted lines only show up when I triple-click the back face to select the whole object. Here's what the sketch looks like without selections: What are these lines and how can I get rid of them? They are causing weird issues that I can't seem to get around.

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  • ssh through a bastion machine works on someone else's desktop but not my own

    - by Terrence Brannon
    I have to ssh into a bastion (jump) server in order to get to the final server. On the jump server, my .ssh/config says: Host * ForwardAgent yes My co-worker uses PuTTy and Pageant. When I use a putty shell to connect from his desktop to the final server as root via the jump server, it works fine. At my desk I cannot connect to the final server, only the jump server. However, if I go to his desk, and successfully log into the final server via the jump server, I can then go back to my desk and also do so.... but after a certain amount of time, my shells revert to the original behavior of not connecting to final server via jump server. The entire transcript of ssh -v -v -v final_server is here The relevant part to me is when the public key is offered but then it says 'we did not send a packet': debug1: Offering public key: /home/CORP/t.brannon/.ssh/id_dsa debug3: send_pubkey_test debug2: we sent a publickey packet, wait for reply debug1: Authentications that can continue: publickey,password debug2: we did not send a packet, disable method debug3: authmethod_lookup password

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  • Squid - Active Directory - permissions based on Nodes rather than Groups

    - by Genboy
    Hi, I have squid running on a gateway machine & I am trying to integrate it with Active Directory for authentication & also for giving different browsing permissions for different users. 1) /usr/lib/squid/ldap_auth -b OU=my,DC=company,DC=com -h ldapserver -f sAMAccountName=%s -D "CN=myadmin,OU=Unrestricted Users,OU=my,DC=company,DC=com" -w mypwd 2) /usr/lib/squid/squid_ldap_group -b "OU=my,DC=company,DC=com" -f "(&(sAMAccountName=%u)(memberOf=cn=%g,cn=users,dc=company,dc=com))" -h ldapserver -D "CN=myadmin,OU=Unrestricted Users,OU=my,DC=company,DC=com" -w zxcv Using the first command above, I am able to authenticate users. Using the second command above, I am able to figure out if a user belongs to a particular active directory group. So I should be able to set ACL's based on groups. However, my customer's AD setup is such that he has users arranged in different Nodes. For eg. He has users setup in the following way cn=usr1,ou=Lev1,ou=Users,ou=my,ou=company,ou=com cn=usr2,ou=Lev2,ou=Users,ou=my,ou=company,ou=com cn=usr3,ou=Lev3,ou=Users,ou=my,ou=company,ou=com etc. So, he wants that I have different permissions based on whether a user belongs to Lev1 or Lev2 or Lev3 nodes. Note that these aren't groups, but nodes. Is there a way to do this with squid? My squid is running on a debian machine.

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  • Running "Rebuild Index" maintenance plan with "Online indexing"

    - by Bharanidharan
    Hi I am using Windows Server 2003 SP 2 and SQL Server 2005 Enterprise edition I am creating a "Rebuild Index" job for a particular database and I am successfully able to run the job. But when I try to enable the "Keep index online while rebuilding" option, the job does not execute successfully and throws out errors. I have attached the screenshots. Any help would be app http://img535.imageshack.us/gal.php?g=error1r.png PS: I am not able to attach the images here since i do not have 10 points yet! Thanks.

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  • How to set the VirtualDocumentRoot based on the files within

    - by Chuck Vose
    I'm trying to set up Apache to use the VirtualDocumentRoot directive but my sites aren't all exactly the same. Most of the sites have a drupal folder which should be the root but there are a few really old drupal sites, a few rails sites, some django sites, etc. that want the Document root to be / or some other folder. Is there a way to set up VirtualDocumentRoot based on a conditional or is there a way to use RewriteRule/Cond to detect that / is the incorrect folder if there is a drupal folder or a public folder? Here's what I have so far: <VirtualHost *:80> # Wildcard ServerAlias, this is the default vhost if no specific vhost matches first. ServerAlias *.unicorn.devserver.com # Automatic ServerName, based on the HTTP_HOST header. UseCanonicalName Off # Automatic DocumentRoot. This uses the 4th level domain name as the document root, # for example http://bar.foo.baz.com/ would respond with /Users/vosechu/Sites/bar/drupal. VirtualDocumentRoot /Users/vosechu/Sites/%-4/drupal </VirtualHost> Thanks in advance! -Chuck

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  • Seeking web-based FTP client for very large file upload

    - by Paul M. Nguyen
    I have looked around for these for some time... the limits imposed by the web server and/or the dynamic programming environment (e.g. PHP) are far too restrictive for the application I'm working on. We need to be able to move large graphics and video files to and from clients (ranging from tens of MB to a few GB in a single file). Plain FTP with a proper desktop client will do the trick, and we're hosting this in Amazon EC2 with EBS. User management will be done from the office via webmin. Users are chroot-jailed into their home dir by proftpd. net2ftp will work for many clients, but we often need to move single files that approach 1GB or exceed 2-3GB which is way out of the range of any http-based uploader. So we turn to Java or Flash - can they do it? From within the web browser establish an FTP connection and grab a huge file? There are licensed applets and such out there, but none seem convincing. Again, I'm looking for some code that can speak FTP and read (& write?) the local disk, that is delivered in a web browser, and can move single files of 2GB+. The reason for having a web-based interface to FTP is to skip the software installation step for our clients. I will consider proper desktop client software as long as it's "portable" and at least Win+Mac and can be easily configured by lay-man users in a hurry.

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  • Virtualbox - differencing disk based on different differencing disk

    - by Klinki
    I'm trying to create differencing image based on differencing image in VirtualBox 4.2.18. Official documentation says it should be possible: http://www.virtualbox.org/manual/ch05.html#diffimages Basically I want to achieve this drive hierarchy: + immutable image with Debian and all software installed +---- differencing image with specific configuration, autoreset=off, readonly +-------- differencing image with autoreset=on +---- another differencing image for different virtual machine +-------- differencing image with autoreset=on I successfully created differencing image based on differencing image, but I'm not able to connect it to virtual machine :( It always shows error: Failed to open the hard disk .... cannot register hard disk ... because hard disk with UUID ... already exists Here is screenshot of Virtual Media Manager and error dialog Virtual Media Manager Window screenshot Very strange is that the new differencing image (tempdrive.vdi) doesn't have Actual Size 0. I wasn't able to connect it, but still, it has 36KB of data on it... This is very similar to this older question: How to create a chained differencing disk of another differencing disk in Virtual Box? but suggested solution is not working anymore in VirtualBox 4.2.18, so I posted it as a new question. (Limit for posting links and screenshots is quite annoying..)

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  • DNS-Based Environment Determination

    - by zvolkov
    Found the following here. The questions is: where can I find more details on how exactly implement this on Windows? Any guide or how-to anybody? Or maybe you can provide your invaluable suggestions? Specifically, how do I make so that "all QA servers would first resolve entries in qa.example.com first and then if that lookup failed they would try example.com" (I'm a dev, not a DNS specialist, but our IT Support has refused to help on this:() Use DNS Based Environment Determination for your servers. Do this by initially splitting your top level domain into a number of sub domains depending on their function, and then creating DNS Service Names in each of the sub domains pointing to the relevant server for that service. Based on the list above we would then have: * clientdb.prod.example.com for Production * clientdb.perf.example.com for Performance Testing * clientdb.qa.example.com for QA * clientdb.dev.example.com for Development Servers then resolve entries in their relevant sub domain by function. That is, all QA servers would first resolve entries in qa.example.com first and then if that lookup failed they would try example.com. This allows you to have a single configuration entry for your client database hostname (clientdb) that would resolve correctly in all environments. This technique has the added advantage of still having global services defined in a common top level domain. This seems to be related to Providing "split horizon" DNS service. Reading that, I see that I will probably need separate DNS Server for each environment. Is this true or does Windows support some form of "tagging" the records to be visible depending on the requestor's IP?

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  • SSH client not showing prompt after successful login

    - by user431949
    I'm having problems with my SSH client on Ubuntu 10.10. When I switch on my computer and open a Terminal and execute the command ssh user@host, it gives me a password prompt after which I enter the right password, I then get a prompt to execute my commands on the remote computer. Now the problem is, after a little while (probably around 10 minutes), the terminal window stops accepting commands (No matter what I type, nothing shows). Once this happens, I close the Terminal window and try to start all over again by opening another Terminal window. But this time around, after entering the right password, I don't get a welcome message or prompt. The cursor just keeps blinking on a new line. I ran the ssh command with -v parameter and the message I get after a successful login is: debug1: Authentication succeeded (password). debug1: channel 0: new [client-session] debug1: Entering interactive session. debug1: Sending environment. debug1: Sending env LANG = en_GB.utf8 Still the cursor keeps blinking on a new line without a prompt. However, Putty SSH client works perfectly on the same machine. Thank you very much for your time. Your help would be greating appreciated.

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  • Collaborative data modelling software?

    - by at01
    I'm trying to find a tool where a lot of people can work on a data model collaboratively. Embarcadero has a an ER application called ER/studio which apparently comes with a repository system that acts like typical version control software. That sounds great except ER/studio is expensive and this is a non-profit and open source organization where we encourage members to even contribute small changes. What's the best solution? Either downloadable software or a web service would work. We don't mind paying, but the cost can't go up with the number of participants...

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  • Cisco ASA 5510 Time of Day Based Policing

    - by minamhere
    I have a Cisco ASA 5510 setup at a boarding school. I determined that many (most?) of the students were downloading files, watching movies, etc, during the day and this was causing the academic side of our network to suffer. The students should not even be in their rooms during the day, so I configured the ASA to police their network segment and limit their outbound bandwidth. This resolved all of our academic issues, and everyone was happy. Except the resident students. I have been asked to change/remove the policing policy at the end of the day, to allow the residents access to the unused bandwidth at night. There's no reason to let bandwidth sit unused at night just because it would be abused during the day. Is there a way to setup Time of Day based Policies on the ASA? Ideally I'd like to be able to open up the network at night and all day during weekends. If I can't set Time based policies, is is possible to schedule the ASA to load a set of commands at a specific time? I suppose I could just setup a scheduled task on one of our servers to log in and make the changes with a simple script, but this seems like a hack, and I'm hoping there is a better or more standard way to accomplish this. Thanks. Edit: If there is a totally different solution that would accomplish a similar goal, I'd be interested in that as well. Free/Cheap would be ideal, but if a separate internet connection is my only other option, it might be worth fighting for money for hardware or software to do this better or more efficiently.

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  • Require a very simple bash-based webserver for logging XML POST [on hold]

    - by Syffys
    As in title, it's for testing purpose and I need it to be extremely light (1 line to 1 single light file). Here is a XML query sample: XML_QUERY=$(cat <<EOF <?xml version='1.0' encoding='UTF-8'?> <Test></Test> EOF ) curl -H "Content-type: text/xml; charset=utf-8" -H "Soapaction: \"\"" -k -d "${XML_QUERY}" http://localhost:8088 Here are some of the tracks I have found so far even if I wasnt able to adapt them to work as I expect: Netcat minimal webserver: Problem is that my nc does not have the -q option, so the connection is closing before delivering the XML content Netcat Only webserver: Same as above Thanks in advance! EDIT: As it's been asked, I'm running Linux Redhat, even if the distro does not really matter and the OS implied since I'm asking a bash-based solution... Also about my topic being on hold: "Instead, describe your situation and the specific problem you're trying to solve" = I though this was exactly what I was doing, but ok I'll reword: My situation: bash environment (which can also include some standard linux tool: netcat, python or whatever) My specific problem: please see title: Require a very simple bash-based webserver for logging XML in HTTP POST for testing purpose

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