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adapter_helper.rb
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adapter_helper.rb
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# Adapter watch
#
# @param [Listen::Listener] listener the adapter listener
# @param [String] path the path to watch
#
def watch(listener, expected_changes, *paths)
callback = lambda { |changed_dirs, options| @called = true; listener.on_change(changed_dirs) }
@adapter = Listen::Adapter.select_and_initialize(paths, { :report_changes => false, :latency => test_latency }, &callback)
forced_stop = false
prevent_deadlock = Proc.new { sleep(10); puts "Forcing stop"; @adapter.stop; forced_stop = true }
@adapter.start(false)
yield
t = Thread.new(&prevent_deadlock)
@adapter.wait_for_changes(expected_changes)
unless forced_stop
Thread.kill(t)
@adapter.report_changes
end
ensure
unless forced_stop
Thread.kill(t) if t
@adapter.stop
end
end
shared_examples_for 'a filesystem adapter' do
subject { described_class.new(File.dirname(__FILE__), &Proc.new {}) }
describe '#start' do
after { subject.stop }
context 'with the blocking param set to true' do
it 'blocks the current thread after starting the workers' do
@called = false
t = Thread.new { subject.start(true); @called = true }
sleep(test_latency * 3)
Thread.kill(t) if t
@called.should be_false
end
end
context 'with the blocking param set to false' do
it 'does not block the current thread after starting the workers' do
@called = false
t = Thread.new { subject.start(false); @called = true }
sleep(test_latency * 3)
Thread.kill(t) if t
@called.should be_true
end
end
end
describe '#started?' do
context 'with a new adapter' do
it 'returns false' do
subject.should_not be_started
end
end
context 'with a stopped adapter' do
before { subject.start(false); subject.stop }
it 'returns false' do
subject.should_not be_started
end
end
context 'with a started adapter' do
before { subject.start(false) }
after { subject.stop }
it 'returns true' do
subject.should be_started
end
end
end
end
shared_examples_for 'an adapter that call properly listener#on_change' do |*args|
options = (args.first && args.first.is_a?(Hash)) ? args.first : {}
let(:listener) { mock(Listen::Listener) }
before { described_class.stub(:works?) { true } }
context 'single file operations' do
context 'when a file is created' do
it 'detects the added file' do
fixtures do |path|
listener.should_receive(:on_change).once.with do |array|
array.should include(path)
end
watch(listener, 1, path) do
touch 'new_file.rb'
end
end
end
context 'given a symlink', :unless => windows? do
it 'detects the added file' do
fixtures do |path|
listener.should_receive(:on_change).once.with do |array|
array.should include(path)
end
touch 'new_file.rb'
watch(listener, 1, path) do
ln_s 'new_file.rb', 'new_file_symlink.rb'
end
end
end
end
context 'given a new created directory' do
it 'detects the added file' do
fixtures do |path|
listener.should_receive(:on_change).once.with do |array|
array.should include(path, "#{path}/a_directory")
end
watch(listener, 2, path) do
mkdir 'a_directory'
# Needed for INotify, because of :recursive rb-inotify custom flag?
sleep 0.05
touch 'a_directory/new_file.rb'
end
end
end
end
context 'given an existing directory' do
it 'detects the added file' do
fixtures do |path|
listener.should_receive(:on_change).once.with do |array|
array.should include("#{path}/a_directory")
end
mkdir 'a_directory'
watch(listener, 1, path) do
touch 'a_directory/new_file.rb'
end
end
end
end
context 'given a directory with subdirectories' do
it 'detects the added file' do
fixtures do |path|
listener.should_receive(:on_change).once.with do |array|
array.should include("#{path}/a_directory/subdirectory")
end
mkdir_p 'a_directory/subdirectory'
watch(listener, 1, path) do
touch 'a_directory/subdirectory/new_file.rb'
end
end
end
end
end
context 'when a file is modified' do
it 'detects the modified file' do
fixtures do |path|
listener.should_receive(:on_change).once.with do |array|
array.should include(path)
end
touch 'existing_file.txt'
watch(listener, 1, path) do
touch 'existing_file.txt'
end
end
end
context 'given a symlink', :unless => windows? do
it 'detects the modified file' do
fixtures do |path|
listener.should_receive(:on_change).once.with do |array|
array.should include(path)
end
touch 'existing_file.rb'
ln_s 'existing_file.rb', 'existing_file_symlink.rb'
watch(listener, 1, path) do
touch 'existing_file.rb'
end
end
end
end
context 'given a hidden file' do
it 'detects the modified file' do
fixtures do |path|
listener.should_receive(:on_change).once.with do |array|
array.should include(path)
end
touch '.hidden'
watch(listener, 1, path) do
touch '.hidden'
end
end
end
end
context 'given a file mode change', :unless => windows? do
it 'does not detect the mode change' do
fixtures do |path|
listener.should_receive(:on_change).once.with do |array|
array.should include(path)
end
touch 'run.rb'
watch(listener, 1, path) do
chmod 0777, 'run.rb'
end
end
end
end
context 'given an existing directory' do
it 'detects the modified file' do
fixtures do |path|
listener.should_receive(:on_change).once.with do |array|
array.should include("#{path}/a_directory")
end
mkdir 'a_directory'
touch 'a_directory/existing_file.txt'
watch(listener, 1, path) do
touch 'a_directory/existing_file.txt'
end
end
end
end
context 'given a directory with subdirectories' do
it 'detects the modified file' do
fixtures do |path|
listener.should_receive(:on_change).once.with do |array|
array.should include("#{path}/a_directory/subdirectory")
end
mkdir_p 'a_directory/subdirectory'
touch 'a_directory/subdirectory/existing_file.txt'
watch(listener, 1, path) do
touch 'a_directory/subdirectory/new_file.rb'
end
end
end
end
end
context 'when a file is moved' do
it 'detects the file move' do
fixtures do |path|
listener.should_receive(:on_change).once.with do |array|
array.should include(path)
end
touch 'move_me.txt'
watch(listener, 1, path) do
mv 'move_me.txt', 'new_name.txt'
end
end
end
context 'given a symlink', :unless => windows? do
it 'detects the file move' do
fixtures do |path|
listener.should_receive(:on_change).once.with do |array|
array.should include(path)
end
touch 'move_me.rb'
ln_s 'move_me.rb', 'move_me_symlink.rb'
watch(listener, 1, path) do
mv 'move_me_symlink.rb', 'new_symlink.rb'
end
end
end
end
context 'given an existing directory' do
it 'detects the file move into the directory' do
fixtures do |path|
listener.should_receive(:on_change).once.with do |array|
array.should include(path, "#{path}/a_directory")
end
mkdir 'a_directory'
touch 'move_me.txt'
watch(listener, 2, path) do
mv 'move_me.txt', 'a_directory/move_me.txt'
end
end
end
it 'detects a file move out of the directory' do
fixtures do |path|
listener.should_receive(:on_change).once.with do |array|
array.should include(path, "#{path}/a_directory")
end
mkdir 'a_directory'
touch 'a_directory/move_me.txt'
watch(listener, 2, path) do
mv 'a_directory/move_me.txt', 'i_am_here.txt'
end
end
end
it 'detects a file move between two directories' do
fixtures do |path|
listener.should_receive(:on_change).once.with do |array|
array.should include("#{path}/from_directory", "#{path}/to_directory")
end
mkdir 'from_directory'
touch 'from_directory/move_me.txt'
mkdir 'to_directory'
watch(listener, 2, path) do
mv 'from_directory/move_me.txt', 'to_directory/move_me.txt'
end
end
end
end
context 'given a directory with subdirectories' do
it 'detects files movements between subdirectories' do
fixtures do |path|
listener.should_receive(:on_change).once.with do |array|
array.should include("#{path}/a_directory/subdirectory", "#{path}/b_directory/subdirectory")
end
mkdir_p 'a_directory/subdirectory'
mkdir_p 'b_directory/subdirectory'
touch 'a_directory/subdirectory/move_me.txt'
watch(listener, 2, path) do
mv 'a_directory/subdirectory/move_me.txt', 'b_directory/subdirectory'
end
end
end
end
end
context 'when a file is deleted' do
it 'detects the file removal' do
fixtures do |path|
listener.should_receive(:on_change).once.with do |array|
array.should include(path)
end
touch 'unnecessary.txt'
watch(listener, 1, path) do
rm 'unnecessary.txt'
end
end
end
context 'given a symlink', :unless => windows? do
it 'detects the file removal' do
fixtures do |path|
listener.should_receive(:on_change).once.with do |array|
array.should include(path)
end
touch 'unnecessary.rb'
ln_s 'unnecessary.rb', 'unnecessary_symlink.rb'
watch(listener, 1, path) do
rm 'unnecessary_symlink.rb'
end
end
end
end
context 'given an existing directory' do
it 'detects the file removal' do
fixtures do |path|
listener.should_receive(:on_change).once.with do |array|
array.should include("#{path}/a_directory")
end
mkdir 'a_directory'
touch 'a_directory/do_not_use.rb'
watch(listener, 1, path) do
rm 'a_directory/do_not_use.rb'
end
end
end
end
context 'given a directory with subdirectories' do
it 'detects the file removal' do
fixtures do |path|
listener.should_receive(:on_change).once.with do |array|
array.should include("#{path}/a_directory/subdirectory")
end
mkdir_p 'a_directory/subdirectory'
touch 'a_directory/subdirectory/do_not_use.rb'
watch(listener, 1, path) do
rm 'a_directory/subdirectory/do_not_use.rb'
end
end
end
end
end
end
context 'multiple file operations' do
it 'detects the added files' do
fixtures do |path|
listener.should_receive(:on_change).once.with do |array|
array.should include(path, "#{path}/a_directory")
end
watch(listener, 2, path) do
touch 'a_file.rb'
touch 'b_file.rb'
mkdir 'a_directory'
# Needed for INotify, because of :recursive rb-inotify custom flag?
# Also needed for the osx adapter
sleep 0.05
touch 'a_directory/a_file.rb'
touch 'a_directory/b_file.rb'
end
end
end
it 'detects the modified files' do
fixtures do |path|
listener.should_receive(:on_change).once.with do |array|
array.should include(path, "#{path}/a_directory")
end
touch 'a_file.rb'
touch 'b_file.rb'
mkdir 'a_directory'
touch 'a_directory/a_file.rb'
touch 'a_directory/b_file.rb'
watch(listener, 2, path) do
touch 'b_file.rb'
touch 'a_directory/a_file.rb'
end
end
end
it 'detects the removed files' do
fixtures do |path|
listener.should_receive(:on_change).once.with do |array|
array.should include(path, "#{path}/a_directory")
end
touch 'a_file.rb'
touch 'b_file.rb'
mkdir 'a_directory'
touch 'a_directory/a_file.rb'
touch 'a_directory/b_file.rb'
watch(listener, 2, path) do
rm 'b_file.rb'
rm 'a_directory/a_file.rb'
end
end
end
end
context 'single directory operations' do
it 'detects a moved directory' do
fixtures do |path|
listener.should_receive(:on_change).once.with do |array|
array.should include(path)
end
mkdir 'a_directory'
touch 'a_directory/a_file.rb'
touch 'a_directory/b_file.rb'
watch(listener, 1, path) do
mv 'a_directory', 'renamed'
end
end
end
it 'detects a removed directory' do
fixtures do |path|
listener.should_receive(:on_change).once.with do |array|
array.should include(path, "#{path}/a_directory")
end
mkdir 'a_directory'
touch 'a_directory/a_file.rb'
touch 'a_directory/b_file.rb'
watch(listener, 2, path) do
rm_rf 'a_directory'
end
end
end
end
context "paused adapter" do
context 'when a file is created' do
it "doesn't detects the added file" do
fixtures do |path|
watch(listener, 1, path) do # The expected changes param is set to one!
@adapter.paused = true
touch 'new_file.rb'
end
@called.should be_nil
end
end
end
end
context "when multiple directories are listened to" do
context 'when files are added to one of multiple directories' do
it 'detects added files' do
fixtures(2) do |path1, path2|
listener.should_receive(:on_change).once.with do |array|
array.should include(path2)
end
watch(listener, 1, path1, path2) do
touch "#{path2}/new_file.rb"
end
end
end
end
context 'when files are added to multiple directories' do
it 'detects added files' do
fixtures(2) do |path1, path2|
listener.should_receive(:on_change).once.with do |array|
array.should include(path1, path2)
end
watch(listener, 2, path1, path2) do
touch "#{path1}/new_file.rb"
touch "#{path2}/new_file.rb"
end
end
end
end
context 'given a new and an existing directory on multiple directories' do
it 'detects the added file' do
fixtures(2) do |path1, path2|
listener.should_receive(:on_change).once.with do |array|
array.should include(path2, "#{path1}/a_directory", "#{path2}/b_directory")
end
mkdir "#{path1}/a_directory"
watch(listener, 3, path1, path2) do
mkdir "#{path2}/b_directory"
# Needed for INotify
sleep 0.05
touch "#{path1}/a_directory/new_file.rb"
touch "#{path2}/b_directory/new_file.rb"
end
end
end
end
context 'when a file is moved between the multiple watched directories' do
it 'detects the movements of the file' do
fixtures(3) do |path1, path2, path3|
listener.should_receive(:on_change).once.with do |array|
array.should include("#{path1}/from_directory", path2, "#{path3}/to_directory")
end
mkdir "#{path1}/from_directory"
touch "#{path1}/from_directory/move_me.txt"
mkdir "#{path3}/to_directory"
watch(listener, 3, path1, path2, path3) do
mv "#{path1}/from_directory/move_me.txt", "#{path2}/move_me.txt"
mv "#{path2}/move_me.txt", "#{path3}/to_directory/move_me.txt"
end
end
end
end
context 'when files are deleted from the multiple watched directories' do
it 'detects the files removal' do
fixtures(2) do |path1, path2|
listener.should_receive(:on_change).once.with do |array|
array.should include(path1, path2)
end
touch "#{path1}/unnecessary.txt"
touch "#{path2}/unnecessary.txt"
watch(listener, 2, path1, path2) do
rm "#{path1}/unnecessary.txt"
rm "#{path2}/unnecessary.txt"
end
end
end
end
end
end