runt unit/functional test of current file and output html for textmate

1.part.md

Playing with TextMate is fun, but I can't find any bundle that can make running a single-file unit test or functional test easily.

Effect

So I want to custom a command:

• By pressing , TextMate will figure out which test to run.

  When the opened file is app/controllers/abc_controller.rb, the test file is test/functional/abc_controller_test.rb

  When it becomes app/models/abc.rb then test file should be test/unit/abc_test.rb

• By clicking the error message, I can google it (maybe plus a word "ruby")

• By clicking the trace, I can navigate to the correct file and correct line

A screenshot: (Just like a vim plugin for ruby test)

How

Thanks to the Very Decently Composed Introduction of TextMate Commands, it's easy!

A TextMate command is simply a script, which may be executed by bash, ruby, python, applescript ... Editor state is saved in environment variables such as $TM_FILEPATH.

• To read some text input from current selection, just change the input field and read from stdin

• To link to a page in web browser, use a link with TextMate specific javascript:

  <a href='javascript:TextMate.system("open http://the.page.you.want", null)'>text you see</a>
  

• To link to a file opened or not opened in TextMate:

  <a href='txmt://open?url=*file_path*&line=*line_number*'>text you see</a>
  

Code

2.run test.rb

#!/usr/bin/env ruby

# custom options
ruby_switches = "-Ku -Itest"
google_template = "ruby %s"

# find out test file
require 'fileutils'
$f = ENV['TM_FILEPATH'].dup
$f.sub! /\/app\/models\/(\w+)\.rb/, '/test/unit/\1_test.rb'
$f.sub! /\/app\/controllers\/(\w+)\.rb/, '/test/functional/\1_test.rb'
unless dir = (  $f[/.*(?=\/test\/unit\/)/] or $f[/.*(?=\/test\/functional\/)/]  )
  puts "Can't recognize test file: #$f"
  exit
end
FileUtils.cd dir

# run test
result = `ruby #{ruby_switches} #$f 2>&1`
result = result.split("\n")

# transform results
require 'cgi'
trace_pattern = /(.+\.rb):(\d+)(?=:in)/
error_flip = false
result.each do |line|
  case line.strip
  when /^\d+\)\ Error:$/
    # the next line will be error class and message
    error_flip = true
    puts "<b style='font-weight:bold'>#{line}</b><br/>"
  when trace_pattern
    # link to trace file
    line.sub! trace_pattern do
      line_num = $2
      file_base = $1.strip
      file_name = File.expand_path file_base
      "<a href='txmt://open?url=file://#{file_name}&line=#{line_num}'>#{file_base}:#{line_num}</a>"
    end
    puts line, '<br/>'
  else
    # link to google
    if error_flip and line =~ /^(\w+):(.*)$/
      style = 'text-decoration:none;color:black;background:#def'
      q = CGI.escape google_template % [line.strip]
      q = %Q["open http://www.google.com/search?q=#{q}"]
      puts "<a href='javascript:TextMate.system(#{q},null);'"
      puts   "style='#{style};display:block;margin:4px 0'"
      puts   "title='search in google'>"
      puts   "#$1:<span style='color:c25'>#$2</span>"
      puts "</a>"
      error_flip = false
    else
      # faint grey unimportant text
      puts "<span style='color:#999'>#{line}</span><br/>"
    end
  end
end

3.part.md

Config

Rspec is not supported yet, but it won't require much modification if you know how it goes!