Could someone show how it is possible to check whether another instance of the program (e.g. test.exe) is running and if so return the istance of such program beacuse I need to use a method of a class in that current status?
I would like that when I lanch the exe, first it check if it is already executing. If so, I want the status and working on the same state. Otherwise it can open a new one...
Related
I have created a TestExecutionListener that wants to persist additional data in the XML files created by the LegacyXmlReportGeneratingListener (you know, the TEST-testClassName.xml ones in /build/test-reports/test).
I have registered the TestExecutionListener via /META-INF/services/org.junit.platform.launcher.TestExecutionListener.
Everything works fine so far, except the fact, that the LegacyXmlReportGeneratingListener runs afterwards and overwrites my changes. Or on a freshly built system, my listener can't - of course - even find the XMLs.
How can I tell my custom listener to run last or at least after the report generating listeners?
Thanks in advance
Good evening,
I am currently developing a way to import machine created data from a csv sheet into a database.
The question I have is, is there a way to react to a change in a csv file with Lua.
The file gets a line in this format:
17162H,"801234500001",9/23/2016 12:33:30 PM,"INV"
Every time a scanner is finishing a scan process, added under the old lines, but there is no direct connection to the database, to trigger the script.
It doesn't matter if the change is detected via different file size, foldersize (of the folder that contains the file) or a change within the file information (like date of last opening), but I can't open and read in it permanently due performance reasons.
Also this is the first time I ask here, so sorry for my clunky way, I'll try to improve myself with that over time.
Take a look at linotify, it has lua bindings for inotify and looks like it should do the trick, using the "modify" event to trigger your script.
I use LibUV based variant in my spylog apllication
Usage:
file_monitor(path_to_file, {eol = '\r?\n'}, function(line)
...
end)
If you need to run this on Windows, you can use winapi library, which supports file watchers. Here is an example of how it's used in one of my projects; you'll need to call winapi.sleep() to allow time for the check to trigger.
I have been asked to update a system where header information gets injected into a tif via a 3rd party console application. I don't need to worry about that bit.
The part I have been asked to look at it the merge process that generates the header information.
The current file generated by the process is assumed as correct, before I make any changes, so I want to add this as an approved result, from that I can then check that the changes I make will alter the file as expected.
I thought this would be a good opportunity to look at using ApprovalTests
The problem I have is that for what ever reason the links to the videos are considered corruptible (Possibly show me kittens jumping into boxes or something, which will stop me working, which ironically means I slow down my work done because I cannot see any help videos).
What I have been looking at is the Approvals.Verify and Approvals.VerifyFile extensions.
But what appears to be happening is confusing me.
using VerifyFile creates a received file, but the contents of the file are just a line the name of the file I have asked it to verify.
using Verify(new FileInfo("FileNameHere")) does not appear to generate the received file that I need to flag as approved, but the test does return saying that it cannot find the approved tif file.
I am probably using VerifyFile completely wrong and might be looking at using Verify wrong as well.
useful info?
Might be useful to know, that as this is a legacy application, running as a windows service, I have wrapped the service in a harness that allows me to call the routines, so the files are physically being written elsewhere on the machine outside of my control (well there is a config, but the return of the service I call generates a file in a fixed location if it is successful). I have tried copying that into the Unit Test project, but that doesn't appear to help.
Verify(File) and VerifyFile(string) are both meant to verify an existing file. As such they merely setting the received file to the file you pass in. You will still need to move/approval/create the approved file.
Here is the pseudo code and process.
[UseReporter(typeof(DiffReporter), typeof(ClipboardReporter)]
public void TestTiff()
{
string tif = YourProcessToCreateTifFile();
Approvals.VerifyFile(tif);
}
[Note: if you don't have an image diff installed, like TortoiseDiff, you might want to use the FileLauncherReporter]
Run this, once you get the result, move the file over by pasting your clipboard into a cmd window.
It will move the temporary tif to your test directory with the name ClassName.TestTiff.approved.tif
After that the test should pass until something changes.
Happy Testing!
I'm building a crossplatform HTML/Javascript app for iOS and Android using PhoneGap and jQueryMobile, and I am upgrading my app with (among others) a few new fields in one table of the local database (localdatabase/websql).
The challenge
I want to make sure that when the database is expanded with the new table fields, the existing user data, the user data will not be removed or become locked in an inaccesible older version of the database.
The background:
My app has a local database of the user's data (incomes and expenses, plus a few settings). These data need to be persitent, and the way to go, back when I started, was using the HTML5 localDatabase functionality, since that is both persistent, and available for the iOS and Android browsers as well as for most desktop browsers.
I am using a Javascript plugin/library/thingy called persistenceJS to make dealing with the localdb a little easier. But my question is not really specific to persistenceJS.
I am working on a new version of the app, which makes uses of a few new fields in the Settings table. So when these users download the new app and run it, it must test if their Settings table contains this field or not, and if not it must create the field.
How do I do this testing? I see two lines of thought:
Use the database label... that's used in the openDatabase function. This seems to be used by some developers to store a version number.
My trouble with this option is I only know how to use openDatabase to, well, open a database (and create a new one if none exists), and run a callback specifically if the database did not yet exist.
So if I open the table while specifying something like "v2" in the label, will it create a new table? If so, will it copy the old table's values into the new one?
Check for the existence of the table fields...
I could use openDatabase and then test for the existence of the table fields. If they don't, I could add them. The test would be run every time a user opens their app, which seems a little primitive.
By the way:
I know webSQL/localDb has been deprecated by the overlords, but it's still my tool and I want to stick to it for now.
I've found the answer here: http://blog.maxaller.name/2010/03/html5-web-sql-database-intro-to-versioning-and-migrations/.
Basically, you just apply the changeVersion method with the old and the new version label. If you didn't have a label, then the old label is "". While relabeling, webSQL quietly applies the new schema to the old database. Which in my case means adding the new fields.
The tutorial I linked to is really awesome (and so is the functionality).
I'm adding another answer because I've learned more about localDb opendatabase and migrating it.
As a reminder, openDatabase takes these parameters:
name - (string) name of the database
version label - (string) the version you want to open
display label - (string) a pretty useless display name that seems to be used nowhere
max size - (int) largest safe size is 5 * 1024 * 1024
newly created -= (function) to be fired if the db did not previously exist
It's wisest to assign the output of openDatabase to a variable. I.e.
myapp.db = openDatabase('mydb','','My database',5*1024*1024,newlyCreatedCallback);
First off, it seems wise to make use of the 'newly created' callback that's available as the fifth argument of openDatabase. It will fire only if there was no database with the parameters you specified. To prevent this callback from firing when your database did already exist, make sure you have the name, display label and maximum size set to exactly the values that were used to first create the database.
The reason to do this is that if the database was first created, you know for sure that you will not need to do any migrations. You can go straight to a function that adds tables and fields. I recommend using persistenceJS, a tool that helps you read and manipulate the local database.
Before calling openDatabase, it's wise to use jQuery to create a custom event 'dbopen' whose handler will execute migrations. This handler can be triggered by two events. The first is the 'newly created' callback we just discussed. The second is a setInterval that you define after call openDatabase. The interval must check for the existence of the myapp.db variable that you assigned the openDatabase output to.
The reason to create the dbopen custom event is that if you added a 'newly created' callback which triggers a whole bunch of events and continues the flow of your code afterwards, you will want a similar process for the 'not newly created' scenario. There is no callback for openDatabase that does this, so you will have to manually detect the creation of the local database and trigger 'dbopen' as soon as it has come into existence.
I use a window.setInterval for this. Make sure that you create the custom 'dbopen' event using jquery's .one() function, which will fire at most once. Otherwise if the database was newly created, you will fire the open event once when the 'newly created' callback fires, and once when the myapp.db variable comes into existence.
I am a newbie to Jenkins. Basically I want to increment a variable value each time after a job is executed. I created a global variable (Manage Jenkins-->Configure System) with some initial value. Now I want this variable value to be incremented each time after my job is executed.
How to go about this? Thanks in advance for any help.
You could keep the current value in a file, and put the file somewhere outside the workspace.
This way you can read it every time you want to, just by checking the file. When you need to update the number, just create a new file, with the value.
Unfortunately, every build creates a new session, so unless you have a global variable defined in the shell itself (outside of Jenkins, like PATH, using (for example) the /etc/profile file) AND have the ability to update it on the fly, it seems very unlikely to work.
Maybe you should consider using $BUILD_NUMBER variable? It is incremented by one for each build.
Use a property value from a file as part of your build and configure a post build action that will check the file with the updated value back into your version control system..
Depending on what number you need you might also want to look at e.g. the maven build number plugin and such things.