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api.rb
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api.rb
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require 'fileutils'
require 'rbconfig'
require 'aruba/process'
module Aruba
module Api
def in_current_dir(&block)
_mkdir(current_dir)
Dir.chdir(current_dir, &block)
end
def current_dir
File.join(*dirs)
end
def cd(dir)
dirs << dir
raise "#{current_dir} is not a directory." unless File.directory?(current_dir)
end
def dirs
@dirs ||= ['tmp/aruba']
end
def write_file(file_name, file_content)
_create_file(file_name, file_content, false)
end
def overwrite_file(file_name, file_content)
_create_file(file_name, file_content, true)
end
def _create_file(file_name, file_content, check_presence)
in_current_dir do
raise "expected #{file_name} to be present" if check_presence && !File.file?(file_name)
_mkdir(File.dirname(file_name))
File.open(file_name, 'w') { |f| f << file_content }
end
end
def remove_file(file_name)
in_current_dir do
FileUtils.rm(file_name)
end
end
def append_to_file(file_name, file_content)
in_current_dir do
File.open(file_name, 'a') { |f| f << file_content }
end
end
def create_dir(dir_name)
in_current_dir do
_mkdir(dir_name)
end
end
def check_file_presence(paths, expect_presence)
prep_for_fs_check do
paths.each do |path|
if expect_presence
File.should be_file(path)
else
File.should_not be_file(path)
end
end
end
end
def check_file_content(file, partial_content, expect_match)
regexp = regexp(partial_content)
prep_for_fs_check do
content = IO.read(file)
if expect_match
content.should =~ regexp
else
content.should_not =~ regexp
end
end
end
def check_exact_file_content(file, exact_content)
prep_for_fs_check { IO.read(file).should == exact_content }
end
def check_directory_presence(paths, expect_presence)
prep_for_fs_check do
paths.each do |path|
if expect_presence
File.should be_directory(path)
else
File.should_not be_directory(path)
end
end
end
end
def prep_for_fs_check(&block)
stop_processes!
in_current_dir{ block.call }
end
def _mkdir(dir_name)
FileUtils.mkdir_p(dir_name) unless File.directory?(dir_name)
end
def unescape(string)
string.gsub('\n', "\n").gsub('\"', '"').gsub('\e', "\e")
end
def regexp(string_or_regexp)
Regexp === string_or_regexp ? string_or_regexp : Regexp.compile(Regexp.escape(string_or_regexp))
end
def output_from(cmd)
cmd = detect_ruby(cmd)
get_process(cmd).output(@aruba_keep_ansi)
end
def stdout_from(cmd)
cmd = detect_ruby(cmd)
get_process(cmd).stdout(@aruba_keep_ansi)
end
def stderr_from(cmd)
cmd = detect_ruby(cmd)
get_process(cmd).stderr(@aruba_keep_ansi)
end
def all_stdout
only_processes.inject("") { |out, ps| out << ps.stdout(@aruba_keep_ansi) }
end
def all_stderr
only_processes.inject("") { |out, ps| out << ps.stderr(@aruba_keep_ansi) }
end
def all_output
all_stdout << all_stderr
end
def assert_exact_output(expected, actual)
unescape(actual).should == unescape(expected)
end
def assert_partial_output(expected, actual)
unescape(actual).should include(unescape(expected))
end
def assert_matching_output(expected, actual)
unescape(actual).should =~ /#{unescape(expected)}/m
end
def assert_no_partial_output(unexpected, actual)
actual.should_not include(unexpected)
end
def assert_passing_with(expected)
assert_exit_status_and_partial_output(true, expected)
end
def assert_failing_with(expected)
assert_exit_status_and_partial_output(false, expected)
end
def assert_exit_status_and_partial_output(expect_to_pass, expected)
assert_partial_output(expected, all_output)
assert_success(expect_to_pass)
end
# TODO: Remove this. Call more methods elsewhere instead. Reveals more intent.
def assert_exit_status_and_output(expect_to_pass, expected_output, expect_exact_output)
if expect_exact_output
assert_exact_output(expected_output, all_output)
else
assert_partial_output(expected_output, all_output)
end
assert_success(expect_to_pass)
end
def assert_success(success)
success ? assert_exit_status(0) : assert_not_exit_status(0)
end
def assert_exit_status(status)
@last_exit_status.should == status
end
def assert_not_exit_status(status)
@last_exit_status.should_not == status
end
def processes
@processes ||= []
end
def stop_processes!
processes.each do |_, process|
process.stop(@aruba_keep_ansi)
end
end
def register_process(name, process)
processes << [name, process]
end
def get_process(wanted)
processes.reverse.find{ |name, _| name == wanted }[-1]
end
def only_processes
processes.collect{ |_, process| process }
end
def run(cmd)
@commands ||= []
@commands << cmd
cmd = detect_ruby(cmd)
in_current_dir do
announce_or_puts("$ cd #{Dir.pwd}") if @announce_dir
announce_or_puts("$ #{cmd}") if @announce_cmd
process = Process.new(cmd, exit_timeout, io_wait)
register_process(cmd, process)
process.run!
block_given? ? yield(process) : process
end
end
DEFAULT_TIMEOUT_SECONDS = 3
def exit_timeout
@aruba_timeout_seconds || DEFAULT_TIMEOUT_SECONDS
end
DEFAULT_IO_WAIT_SECONDS = 0.1
def io_wait
@aruba_io_wait_seconds || DEFAULT_IO_WAIT_SECONDS
end
def run_simple(cmd, fail_on_error=true)
@last_exit_status = run(cmd) do |process|
process.stop(@aruba_keep_ansi)
announce_or_puts(process.stdout(@aruba_keep_ansi)) if @announce_stdout
announce_or_puts(process.stderr(@aruba_keep_ansi)) if @announce_stderr
# need to replace with process.exit_code or similar, or remove the block entirely... it doesn't add as much as I thought it would
process.stop(@aruba_keep_ansi)
end
@timed_out = @last_exit_status.nil?
if(@last_exit_status != 0 && fail_on_error)
fail("Exit status was #{@last_exit_status}. Output:\n#{all_output}")
end
end
def run_interactive(cmd)
@interactive = run(cmd)
end
def type(input)
_write_interactive(_ensure_newline(input))
end
def _write_interactive(input)
@interactive.stdin.write(input)
end
def _ensure_newline(str)
str.chomp << "\n"
end
def announce_or_puts(msg)
if(@puts)
Kernel.puts(msg)
else
puts(msg)
end
end
def detect_ruby(cmd)
if cmd =~ /^ruby\s/
cmd.gsub(/^ruby\s/, "#{current_ruby} ")
else
cmd
end
end
def current_ruby
File.join(RbConfig::CONFIG['bindir'], RbConfig::CONFIG['ruby_install_name'])
end
def use_clean_gemset(gemset)
run_simple(%{rvm gemset create "#{gemset}"}, true)
if all_stdout =~ /'#{gemset}' gemset created \((.*)\)\./
gem_home = $1
set_env('GEM_HOME', gem_home)
set_env('GEM_PATH', gem_home)
set_env('BUNDLE_PATH', gem_home)
paths = (ENV['PATH'] || "").split(File::PATH_SEPARATOR)
paths.unshift(File.join(gem_home, 'bin'))
set_env('PATH', paths.uniq.join(File::PATH_SEPARATOR))
run_simple("gem install bundler", true)
else
raise "I didn't understand rvm's output: #{all_stdout}"
end
end
def unset_bundler_env_vars
%w[RUBYOPT BUNDLE_PATH BUNDLE_BIN_PATH BUNDLE_GEMFILE].each do |key|
set_env(key, nil)
end
end
def set_env(key, value)
announce_or_puts(%{$ export #{key}="#{value}"}) if @announce_env
original_env[key] = ENV.delete(key)
ENV[key] = value
end
def restore_env
original_env.each do |key, value|
ENV[key] = value
end
end
def original_env
@original_env ||= {}
end
end
end