Add new posts and GPG page
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Ariejan de Vroom
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@ -9,37 +9,39 @@ title: GPG Public Key
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## Proof of identity
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As far as you can trust this website, this is a proof of my identity.
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-----BEGIN PGP SIGNED MESSAGE-----
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Hash: SHA512
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Yes, I use GPG. This message is here to prove my identity to you.
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My name is Ariejan de Vroom and I use GPG.
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My public key information is:
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ID: 0xF713697B
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Fingerprint: 8450 D928 4373 164E 25CC 7E0D AD73 9154 F713 697B
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-----BEGIN PGP SIGNATURE-----
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Version: GnuPG/MacGPG2 v2.0.22 (Darwin)
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Comment: GPGTools - https://gpgtools.org
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=x5b0
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=1VS2
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-----END PGP SIGNATURE-----
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@ -2,7 +2,6 @@
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title: "Dealing With Technical Debt"
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created_at: 2014-04-04 12:38:41 +0200
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kind: article
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published: false
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tags:
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- programming
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- craftsmanship
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@ -0,0 +1,69 @@
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---
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title: "Testing $HOME with Cucumber and Aruba"
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created_at: 2014-04-15 21:42:43 +0200
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kind: article
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published: true
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tags:
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- programming
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- cucumber
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- aruba
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summary: |
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Cucumber and Aruba make it awesome to write acceptance tests for your
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command line programs. But how do you test your program interacting with
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files from a user's <code>$HOME</code> directory?
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---
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[Cucumber][1] and [Aruba][2] are awesome tools to write acceptance tests for your command line application. The allow you to do things like this:
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```
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:::gherkin
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Scenario: Exit with 0 when no examples are run
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Given a file named "a_no_examples_spec.rb" with:
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"""ruby
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"""
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When I run `rspec a_no_examples_spec.rb`
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Then the exit status should be 0
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And the output should contain "0 examples"
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```
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_This example was taken rspec-core._
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Aruba basically does three things for you:
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* Create and inspect files and directories
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* Run commands
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* Inspect output and exit status
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## The problem
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Now, if you are writing a CLI that interacts with a configuration file in the user's home directory, you'd write a cucumber like this:
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```
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:::gherkin
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Scenario: use .my-app configuration
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Given a file named "~/.my-app" with:
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"""
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awesome_enabled: true
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"""
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When I run `my-app`
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Then the output should contain "AWESOME"
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```
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But how does your app and Aruba differentiate between this generated test file and your actual configration file in your home directory? It doens't.
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## The answer
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The solution is quite easy and elegant, in your `Before` set the `$HOME` environment variable to a custom location inside the `tmp/aruba` directory.
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In `features/support/env.rb`:
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```
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:::ruby
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Before do
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set_env 'HOME', File.expand_path(File.join(current_dir, 'home'))
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FileUtils.mkdir_p ENV['HOME']
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end
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```
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This will set `$HOME` to `tmp/aruba/home` in the context of your cucumbers (and execute binary). `current_dir` automatically points to the right location for the aruba temporary directory.
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[1]: https://github.com/cucumber/cucumber
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[2]: https://github.com/cucumber/aruba
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