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create shared examples all listeners should behave like

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This commit is contained in:
Niklas Hofer 2011-05-13 23:06:45 +02:00
parent 9c44f89a61
commit bc740d725f
11 changed files with 251 additions and 289 deletions
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22
lib/guard/listener.rb
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@ -24,11 +24,22 @@ module Guard
end
def initialize(directory=Dir.pwd)
@directory = directory
@directory = directory.to_s
@sha1_checksums_hash = {}
update_last_event
end
def start
watch directory
end
def stop
end
def on_change(&callback)
@callback = callback
end
def update_last_event
@last_event = Time.now
end
@ -38,6 +49,15 @@ module Guard
files.map! { |file| file.gsub("#{directory}/", '') }
end
def worker
raise NotImplementedError, "should respond to #watch"
end
# register a directory to watch. must be implemented by the subclasses
def watch(directory)
raise NotImplementedError, "do whatever you want here, given the directory as only argument"
end
private
def potentially_modified_files(dirs, options = {})

25
lib/guard/listeners/darwin.rb
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@ -2,25 +2,23 @@ module Guard
class Darwin < Listener
attr_reader :fsevent
def initialize
def initialize(*)
super
@fsevent = FSEvent.new
end
def on_change(&callback)
@fsevent.watch directory do |modified_dirs|
files = modified_files(modified_dirs)
update_last_event
callback.call(files)
end
def worker
@fsevent
end
def start
@fsevent.run
super
fsevent.run
end
def stop
@fsevent.stop
super
fsevent.stop
end
def self.usable?
@ -36,5 +34,14 @@ module Guard
false
end
private
def watch(directory)
worker.watch directory do |modified_dirs|
files = modified_files(modified_dirs)
update_last_event
callback.call(files)
end
end
end
end

27
lib/guard/listeners/linux.rb
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@ -2,7 +2,7 @@ module Guard
class Linux < Listener
attr_reader :inotify, :files, :latency, :callback
def initialize
def initialize(*)
super
@inotify = INotify::Notifier.new
@ -12,24 +12,16 @@ module Guard
def start
@stop = false
super
watch_change unless watch_change?
end
def stop
super
@stop = true
sleep latency
end
def on_change(&callback)
@callback = callback
inotify.watch(directory, :recursive, :modify, :create, :delete, :move) do |event|
unless event.name == "" # Event on root directory
@files << event.absolute_name
end
end
rescue Interrupt
end
def self.usable?
require 'rb-inotify'
if !defined?(INotify::VERSION) || Gem::Version.new(INotify::VERSION.join('.')) < Gem::Version.new('0.5.1')
@ -49,6 +41,19 @@ module Guard
private
def worker
@inotify
end
def watch(directory)
worker.watch(directory, :recursive, :modify, :create, :delete, :move) do |event|
unless event.name == "" # Event on root directory
@files << event.absolute_name
end
end
rescue Interrupt
end
def watch_change
@watch_change = true
until @stop

13
lib/guard/listeners/polling.rb
View File

@ -2,21 +2,19 @@ module Guard
class Polling < Listener
attr_reader :callback, :latency
def initialize
def initialize(*)
super
@latency = 1.5
end
def on_change(&callback)
@callback = callback
end
def start
@stop = false
super
watch_change
end
def stop
super
@stop = true
end
@ -33,5 +31,10 @@ module Guard
end
end
# we have no real worker here
# FIXME: cannot watch muliple directories, but is not needed in guard (yet?)
def watch(directory)
end
end
end

26
lib/guard/listeners/windows.rb
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@ -7,20 +7,13 @@ module Guard
@fchange = FChange::Notifier.new
end
def on_change(&callback)
@fchange.watch(directory, :all_events, :recursive) do |event|
paths = [File.expand_path(event.watcher.path) + '/']
files = modified_files(paths, {:all => true})
update_last_event
callback.call(files)
end
end
def start
super
@fchange.run
end
def stop
super
@fchange.stop
end
@ -32,5 +25,20 @@ module Guard
false
end
private
def worker
@fchange
end
def watch(directory)
worker.watch(directory, :all_events, :recursive) do |event|
paths = [File.expand_path(event.watcher.path) + '/']
files = modified_files(paths, {:all => true})
update_last_event
callback.call(files)
end
end
end
end

35
spec/guard/listener_spec.rb
View File

@ -91,4 +91,39 @@ describe Guard::Listener do
end
end
describe "working directory" do
context "unspecified" do
subject { described_class.new }
it "defaults to Dir.pwd" do
subject.directory.should == Dir.pwd
end
it "can be not changed" do
subject.should_not respond_to(:directory=)
end
end
context "specified as first argument to ::new" do
before :each do
@wd = @fixture_path.join("folder1")
end
subject { described_class.new @wd }
it "can be inspected" do
subject.directory.should == @wd.to_s
end
it "can be not changed" do
subject.should_not respond_to(:directory=)
end
it "will be used to watch" do
subject.should_receive(:watch).with(@wd.to_s)
@listener = subject # indeed.
start
stop
end
end
end
end

56
spec/guard/listeners/darwin_spec.rb
View File

@ -15,61 +15,9 @@ describe Guard::Darwin do
subject.should be_usable
end
describe "#on_change" do
before(:each) do
@results = []
@listener = Guard::Darwin.new
@listener.on_change do |files|
@results += files
end
end
it_should_behave_like "a listener that reacts to #on_change"
it_should_behave_like "a listener scoped to a specific directory"
it "catches a new file" do
file = @fixture_path.join("newfile.rb")
File.exists?(file).should be_false
start
FileUtils.touch file
stop
File.delete file
@results.should == ['spec/fixtures/newfile.rb']
end
it "catches a single file update" do
file = @fixture_path.join("folder1/file1.txt")
File.exists?(file).should be_true
start
FileUtils.touch file
stop
@results.should == ['spec/fixtures/folder1/file1.txt']
end
it "catches multiple file updates" do
file1 = @fixture_path.join("folder1/file1.txt")
file2 = @fixture_path.join("folder1/folder2/file2.txt")
File.exists?(file1).should be_true
File.exists?(file2).should be_true
start
FileUtils.touch file1
FileUtils.touch file2
stop
@results.should == ['spec/fixtures/folder1/file1.txt', 'spec/fixtures/folder1/folder2/file2.txt']
end
end
end
private
def start
sleep 1
@listener.update_last_event
Thread.new { @listener.start }
sleep 1
end
def stop
sleep 1
@listener.stop
sleep 1
end
end

80
spec/guard/listeners/linux_spec.rb
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@ -38,71 +38,18 @@ describe Guard::Linux do
@listener.should_not be_watch_change
end
it "should use Inotify as worker" do
@listener.__send__(:worker).should be_a(INotify::Notifier)
end
describe "#on_change" do
before(:each) do
@results = []
@listener = Guard::Linux.new
@listener.on_change do |files|
@results += files
end
end
it "catches a new file" do
file = @fixture_path.join("newfile.rb")
File.exists?(file).should be_false
start
FileUtils.touch file
stop
File.delete file
@results.should == ['spec/fixtures/newfile.rb']
end
it "catches a single file update" do
file = @fixture_path.join("folder1/file1.txt")
File.exists?(file).should be_true
start
File.open(file, 'w') {|f| f.write('') }
stop
@results.should == ['spec/fixtures/folder1/file1.txt']
end
it "catches multiple file updates" do
file1 = @fixture_path.join("folder1/file1.txt")
file2 = @fixture_path.join("folder1/folder2/file2.txt")
File.exists?(file1).should be_true
File.exists?(file2).should be_true
start
File.open(file1, 'w') {|f| f.write('') }
File.open(file2, 'w') {|f| f.write('') }
stop
@results.should == ['spec/fixtures/folder1/file1.txt', 'spec/fixtures/folder1/folder2/file2.txt']
end
it "catches a deleted file" do
file = @fixture_path.join("folder1/file1.txt")
File.exists?(file).should be_true
start
File.delete file
stop
FileUtils.touch file
@results.should == ['spec/fixtures/folder1/file1.txt']
end
it "catches a moved file" do
file1 = @fixture_path.join("folder1/file1.txt")
file2 = @fixture_path.join("folder1/movedfile1.txt")
File.exists?(file1).should be_true
File.exists?(file2).should be_false
start
FileUtils.mv file1, file2
stop
FileUtils.mv file2, file1
@results.should == ['spec/fixtures/folder1/file1.txt', 'spec/fixtures/folder1/movedfile1.txt']
end
it_should_behave_like "a listener that reacts to #on_change"
it_should_behave_like "a listener scoped to a specific directory"
it "doesn't process a change when it is stopped" do
@listener = described_class.new
record_results
file = @fixture_path.join("folder1/file1.txt")
File.exists?(file).should be_true
start
@ -110,22 +57,7 @@ describe Guard::Linux do
stop
File.open(file, 'w') {|f| f.write('') }
end
end
end
private
def start
sleep 1
@listener.update_last_event
Thread.new { @listener.start }
sleep 1
end
def stop
sleep 1
@listener.stop
sleep 1
end
end

57
spec/guard/listeners/polling_spec.rb
View File

@ -3,60 +3,9 @@ require 'guard/listeners/polling'
describe Guard::Polling do
before(:each) do
@results = []
@listener = Guard::Polling.new
@listener.on_change do |files|
@results += files
end
end
subject { Guard::Polling }
describe "#on_change" do
it "catches a new file" do
file = @fixture_path.join("newfile.rb")
File.exists?(file).should be_false
start
FileUtils.touch file
stop
File.delete file
@results.should == ['spec/fixtures/newfile.rb']
end
it "catches a single file update" do
file = @fixture_path.join("folder1/file1.txt")
File.exists?(file).should be_true
start
FileUtils.touch file
stop
@results.should == ['spec/fixtures/folder1/file1.txt']
end
it "catches multiple file updates" do
file1 = @fixture_path.join("folder1/file1.txt")
file2 = @fixture_path.join("folder1/folder2/file2.txt")
File.exists?(file1).should be_true
File.exists?(file2).should be_true
start
FileUtils.touch file1
FileUtils.touch file2
stop
@results.should =~ ['spec/fixtures/folder1/file1.txt', 'spec/fixtures/folder1/folder2/file2.txt']
end
end
private
def start
sleep 1
@listener.update_last_event
Thread.new { @listener.start }
sleep 1
end
def stop
sleep 1
@listener.stop
sleep 1
end
it_should_behave_like "a listener that reacts to #on_change"
it_should_behave_like "a listener scoped to a specific directory"
end

65
spec/guard/listeners/windows_spec.rb
View File

@ -21,70 +21,9 @@ describe Guard::Windows do
subject.should be_usable
end
describe "#on_change" do
before(:each) do
@results = []
@listener = Guard::Windows.new
@listener.on_change do |files|
@results += files
end
end
it_should_behave_like "a listener that reacts to #on_change"
it_should_behave_like "a listener scoped to a specific directory"
it "catches a new file" do
file = @fixture_path.join("newfile.rb")
if File.exists?(file)
begin
File.delete file
rescue
end
end
File.exists?(file).should be_false
start
FileUtils.touch file
stop
begin
File.delete file
rescue
end
@results.should == ['spec/fixtures/newfile.rb']
end
it "catches a single file update" do
file = @fixture_path.join("folder1/file1.txt")
File.exists?(file).should be_true
start
FileUtils.touch file
stop
@results.should == ['spec/fixtures/folder1/file1.txt']
end
it "catches multiple file updates" do
file1 = @fixture_path.join("folder1/file1.txt")
file2 = @fixture_path.join("folder1/folder2/file2.txt")
File.exists?(file1).should be_true
File.exists?(file2).should be_true
start
FileUtils.touch file1
FileUtils.touch file2
stop
@results.should == ['spec/fixtures/folder1/file1.txt', 'spec/fixtures/folder1/folder2/file2.txt']
end
end
end
private
def start
sleep 1
@listener.update_last_event
Thread.new { @listener.start }
sleep 1
end
def stop
sleep 1
@listener.stop
sleep 1
end
end

116
spec/support/listener_helper.rb Normal file
View File

@ -0,0 +1,116 @@
private
def start
sleep 1
@listener.update_last_event
Thread.new { @listener.start }
sleep 1
end
def record_results
@results = []
@listener.on_change do |files|
@results += files
end
end
def stop
sleep 1
@listener.stop
sleep 1
end
def results
@results.flatten
end
shared_examples_for 'a listener that reacts to #on_change' do
before(:each) do
@listener = described_class.new
record_results
end
it "catches a new file" do
file = @fixture_path.join("newfile.rb")
if File.exists?(file)
begin
File.delete file
rescue
end
end
File.exists?(file).should be_false
start
FileUtils.touch file
stop
begin
File.delete file
rescue
end
results.should =~ ['spec/fixtures/newfile.rb']
end
it "catches a single file update" do
file = @fixture_path.join("folder1/file1.txt")
File.exists?(file).should be_true
start
FileUtils.touch file
stop
results.should =~ ['spec/fixtures/folder1/file1.txt']
end
it "catches multiple file updates" do
file1 = @fixture_path.join("folder1/file1.txt")
file2 = @fixture_path.join("folder1/folder2/file2.txt")
File.exists?(file1).should be_true
File.exists?(file2).should be_true
start
FileUtils.touch file1
FileUtils.touch file2
stop
results.should =~ ['spec/fixtures/folder1/file1.txt', 'spec/fixtures/folder1/folder2/file2.txt']
end
it "catches a deleted file" do
file = @fixture_path.join("folder1/file1.txt")
File.exists?(file).should be_true
start
File.delete file
stop
FileUtils.touch file
results.should =~ ['spec/fixtures/folder1/file1.txt']
end
it "catches a moved file" do
file1 = @fixture_path.join("folder1/file1.txt")
file2 = @fixture_path.join("folder1/movedfile1.txt")
File.exists?(file1).should be_true
File.exists?(file2).should be_false
start
FileUtils.mv file1, file2
stop
FileUtils.mv file2, file1
results.should =~ ['spec/fixtures/folder1/file1.txt', 'spec/fixtures/folder1/movedfile1.txt']
end
end
shared_examples_for "a listener scoped to a specific directory" do
before :each do
@wd = @fixture_path.join("folder1")
@listener = described_class.new @wd
end
it "should base paths within this directory" do
record_results
new_file = @wd.join("folder2/newfile.rb")
modified = @wd.join("file1.txt")
File.exists?(modified).should be_true
File.exists?(new_file).should be_false
start
FileUtils.touch new_file
File.open(modified, 'w') {|f| f.write('') }
stop
File.delete new_file
results.should =~ ["folder2/newfile.rb", 'file1.txt']
end
end