Custom Protractor Flake shard parser

PR #45 on Protractor Flake added the ability to specify custom parsers. On my project we’re sharding (running multiple instances of) Protractor and using the following parser to re-run only the failing spec files.

You’ll want to replace the /test/functional/specs/ and the browser name (chrome) below with your actual values.

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const _ = require('lodash');
 
// If only one spec file fails, on the next re-run, we don't get the filename on the output. So
// if it fails again, we need re-use the filename from the previous run
let previousSpecFileNames = [];
 
module.exports = {
  parse: function (protractorTestOutput) {
    if (previousSpecFileNames.length === 1) {
      return previousSpecFileNames;
    }
 
    const lines = protractorTestOutput.split(`\n`);
    // At the end of the output there's a summary of which shards failed
    const failedLines = lines.filter(line =>
      line.startsWith('[launcher] chrome')
      && line.includes('failed')
      && line.includes('test(s)'));
 
    // regex matches #number and #number-number (ie #1 or #1-1, #1-2, #1-3...)
    const testNumberRegExp = new RegExp(/#[0-9](-[0-9]+)?/);
 
    const failedSpecsLines = failedLines.map(failedLine => {
      const match = testNumberRegExp.exec(failedLine);
 
      if (match) {
        // Lines with "#number-number ]" (space followed by closing bracket) and "Specs: "
        return lines.filter(line => line.includes(`${match[0]}] `) && line.includes('Specs: '));
      }
 
      return null;
    }).reduce(function (a, b) { // Flatten the array
      return a.concat(b);
    }, []);
 
    const specFileNames = _.compact(failedSpecsLines).map(line => {
      const startingPathPosition = line.indexOf('/test/functional/specs/');
      return line.substr(startingPathPosition + 1);
    });
 
    previousSpecFileNames = specFileNames;
 
    return specFileNames;
  },
 
  name: 'Your custom parser name',
};

Remove ._ files from Mac OS X

Run this command on the terminal to remove every ._ file created by Mac OS X on the current path and its descendants:

find . -name '._*' -delete

Hide “username” has entered the room, or left the room on Adium

I just spent 10 minutes perusing every Adium menu and options to find where I could disable the message “entered the room” and “left the room” on Adium. Turns out, it’s easy: Right click on the IRC channel name tab and the option “Show Join/Leave messages” will appear.

Replace tabs by space on git history

So, I prefer spaces, and when I press tab, it should instead write 4 spaces. I forgot to set this option on Sublime Text and did some commits with tabs. The following git command will rewrite the repo history and replace tabs by 4 spaces.

git filter-branch --tree-filter 'git diff-tree --name-only --diff-filter=AM -r --no-commit-id $GIT_COMMIT | find . -exec perl -pi -e "s/\t/    /g" {} \;' HEAD

Download file using WinJS.xhr

Snippet to download a file using WinJS.xhr and save it. The file variable below is a StorageFile, result of pickSaveFileAsync.

Note the usage of responseType: “blob” as an option to xhr, and how it is copied to the file stream with msDetachStream.

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WinJS.xhr({
    responseType: "blob",
    type: "GET",
    url: "http://example.com/",
}).then(function (response) {
    var fileContents = response.response;
 
    return file.openAsync(Windows.Storage.FileAccessMode.readWrite).then(function (stream) {
        return Windows.Storage.Streams.RandomAccessStream.copyAsync(fileContents.msDetachStream(), stream).then(function () {
            return stream.flushAsync().then(function () {
                stream.close();
                fileContents.msClose();
            });
        });
    });
});

I tried to use replaceWithStreamedFileFromUriAsync and writeBufferAsync, but never managed to make it work. If you do, leave a comment!

PCH file built from a different branch ((clang-425.0.24)) than the compiler ((clang-425.0.27))

Atualizei o XCode da versão 4.6.0 para 4.6.01 e de repente meus projetos não construíam mais, dando o erro:

PCH file built from a different branch ((clang-425.0.24)) than the compiler ((clang-425.0.27))

A solução foi simplesmente limpar o projeto. Vá ao menu “Product” e selecione “Clean”.

Powershell script to snap an app in Windows 8

You can not, from inside a Windows 8 application, snap it.

That doesn’t mean there is no other way :)

At work, we have to test our app in a snapped state, so we need a way to programmatically make it happen. We discovered that there are two keyboard shortcuts for this action. Windows Key + . (the period key) snaps to the right edge, and Windows Key + Shift + . snaps to the left edge.

So all we have to do is send these keys to the operating system. Sending the Windows Key is tricky, and not supported using only [System.Windows.Forms.SendKeys]::SendWait.

So here’s an alternative:

Download InputSimulator.dll

Run the following commands on a Powershell prompt:

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[Reflection.Assembly]::LoadFile("C:\path\to\InputSimulator.dll")
[WindowsInput.InputSimulator]::SimulateModifiedKeyStroke('LWIN', 'OEM_PERIOD')

And your app will snap to the right edge. I am still researching how to snap to the left edge, it’s a more complicated call to SimulateModifiedKeyStroke, but will keep researching.

Get current session id on Ruby Selenium WebDriver

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@browser.instance_variable_get([email protected]').instance_variable_get([email protected]_id')

SWOTOR Nvidia crash

All of sudden, the game Star Wars: The Old Republic is crashing my Nvidia drivers. I have a GeForce GTX 460. Oddly, I played the game for months without any issues, but since the last update, it crashes multiple times.

Javascript function to find background task by name on Windows 8

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FindTask: function (taskName) {
    var background = Windows.ApplicationModel.Background;
    var iter = background.BackgroundTaskRegistration.allTasks.first();
    var hascur = iter.hasCurrent;
 
    while (hascur) {
        var cur = iter.current.value;
 
        if (cur.name === taskName) {
            return cur;
        }
 
        hascur = iter.moveNext();
    }
 
    return null;
}