Add bin and edit workflow

bin/gems/rb-inotify-0.11.1/spec/notifier_spec.rb

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+require 'spec_helper'
+require 'tmpdir'
+require 'concurrent'
+
+describe INotify::Notifier do
+  describe "instance" do
+    around do |block|
+      Dir.mktmpdir do |dir|
+        @root = Pathname.new(dir)
+        @notifier = INotify::Notifier.new
+
+        begin
+          block.call
+        ensure
+          @notifier.close
+        end
+      end
+    end
+
+    let(:dir) do
+      @root.join("foo").tap(&:mkdir)
+    end
+
+    let(:another_dir) do
+      @root.join("bar").tap(&:mkdir)
+    end
+
+    it "stops" do
+      @notifier.stop
+    end
+
+    describe :process do
+      it "gets events" do
+        events = recording(dir, :create)
+        dir.join("test.txt").write("hello world")
+
+        @notifier.process
+
+        expect(events.size).to eq(1)
+        expect(events.first.name).to eq("test.txt")
+        expect(events.first.absolute_name).to eq(dir.join("test.txt").to_s)
+      end
+
+      it "gets simultaneous events" do
+        events = recording(dir, :create)
+
+        dir.join("one.txt").write("hello world")
+        dir.join("two.txt").write("hello world")
+
+        @notifier.process
+
+        expect(events.map(&:name)).to match_array(%w(one.txt two.txt))
+      end
+
+      it "separates events between watches" do
+        bar_events = nil
+
+        foo_events = recording(dir, :create)
+        bar_events = recording(another_dir, :create)
+
+        dir.join("test.txt").write("hello world")
+        another_dir.join("test_two.txt").write("hello world")
+
+        @notifier.process
+
+        expect(foo_events.size).to eq(1)
+        expect(foo_events.first.name).to eq("test.txt")
+        expect(foo_events.first.absolute_name).to eq(dir.join("test.txt").to_s)
+
+        expect(bar_events.size).to eq(1)
+        expect(bar_events.first.name).to eq("test_two.txt")
+        expect(bar_events.first.absolute_name).to eq(another_dir.join("test_two.txt").to_s)
+      end
+    end
+
+    describe :run do
+      it "processes repeatedly until stopped" do
+        barriers = Array.new(3) { Concurrent::Event.new }
+        barrier_queue = barriers.dup
+        events = recording(dir, :create) { barrier_queue.shift.set }
+
+        run_thread = Thread.new { @notifier.run }
+
+        dir.join("one.txt").write("hello world")
+        barriers.shift.wait(1) or raise "timeout"
+
+        expect(events.map(&:name)).to match_array(%w(one.txt))
+
+        dir.join("two.txt").write("hello world")
+        barriers.shift.wait(1) or raise "timeout"
+
+        expect(events.map(&:name)).to match_array(%w(one.txt two.txt))
+
+        @notifier.stop
+
+        dir.join("three.txt").write("hello world")
+        run_thread.join(1) or raise "timeout"
+
+        expect(events.map(&:name)).to match_array(%w(one.txt two.txt))
+      end
+
+      it "can be stopped from within a callback" do
+        recording(dir, :create) { @notifier.stop }
+
+        run_thread = Thread.new { @notifier.run }
+
+        dir.join("one.txt").write("hello world")
+        run_thread.join(1) or raise "timeout"
+      end
+
+      it "can be stopped before it starts processing" do
+        barrier = Concurrent::Event.new
+
+        run_thread = Thread.new do
+          barrier.wait
+          @notifier.run
+        end
+
+        @notifier.stop
+        barrier.set
+
+        run_thread.join(1) or raise "timeout"
+      end
+    end
+
+    describe :fd do
+      it "returns an integer" do
+        expect(@notifier.fd).to be_an(Integer)
+      end
+    end
+
+    describe :to_io do
+      it "returns a ruby IO" do
+        expect(@notifier.to_io).to be_an(::IO)
+      end
+
+      it "matches the fd" do
+        expect(@notifier.to_io.fileno).to eq(@notifier.fd)
+      end
+
+      it "caches its result" do
+        expect(@notifier.to_io).to be(@notifier.to_io)
+      end
+
+      it "is selectable" do
+        events = recording(dir, :create)
+        expect(select([@notifier.to_io], nil, nil, 0.2)).to be_nil
+
+        dir.join("test.txt").write("hello world")
+        expect(select([@notifier.to_io], nil, nil, 0.2)).to eq([[@notifier.to_io], [], []])
+
+        @notifier.process
+        expect(select([@notifier.to_io], nil, nil, 0.2)).to be_nil
+      end
+    end
+
+    private
+
+    def recording(dir, *flags, callback: nil)
+      events = []
+      @notifier.watch(dir.to_s, *flags) do |event|
+        events << event
+        yield if block_given?
+      end
+
+      events
+    end
+  end
+
+  describe "mixed instances" do
+    it "doesn't tangle fds" do
+      notifiers = Array.new(30) { INotify::Notifier.new }
+      notifiers.each(&:to_io)
+
+      one = Array.new(10) { IO.pipe.last }
+      notifiers.each(&:close)
+
+      two = Array.new(10) { IO.pipe.last }
+
+      notifiers = nil
+      GC.start
+
+      _, writable, _ = select(nil, one, nil, 1)
+      expect(writable).to match_array(one)
+
+      _, writable, _ = select(nil, two, nil, 1)
+      expect(writable).to match_array(two)
+    end
+  end
+end