Skip over the TestProcessWatch class if kqueue is not supported.

This test failed on Linux as kqueue was not supported, but the test wasn't
skipped before. Now the testsuite passes green on both 1.8 and 1.9.

Signed-off-by: Aman Gupta <aman@tmm1.net>

tests/test_process_watch.rb

@@ -2,47 +2,49 @@
 require 'eventmachine'
 require 'test/unit'
 
-class TestProcessWatch < Test::Unit::TestCase
-  module ParentProcessWatcher
-    def process_forked
-      $forked = true
+if EM.kqueue?
+  class TestProcessWatch < Test::Unit::TestCase
+    module ParentProcessWatcher
+      def process_forked
+        $forked = true
+      end
     end
-  end
 
-  module ChildProcessWatcher
-    def process_exited
-      $exited = true
-    end
-    def unbind
-      $unbind = true
-      EM.stop
+    module ChildProcessWatcher
+      def process_exited
+        $exited = true
+      end
+      def unbind
+        $unbind = true
+        EM.stop
+      end
     end
-  end
 
-  def setup
-    EM.kqueue = true if EM.kqueue?
-  end
+    def setup
+      EM.kqueue = true
+    end
 
-  def teardown
-    EM.kqueue = false if EM.kqueue?
-  end
+    def teardown
+      EM.kqueue = false
+    end
 
-  def test_events
-    EM.run{
-      # watch ourselves for a fork notification
-      EM.watch_process(Process.pid, ParentProcessWatcher)
-      $fork_pid = fork{ sleep }
-      child = EM.watch_process($fork_pid, ChildProcessWatcher)
-      $pid = child.pid
+    def test_events
+      EM.run{
+        # watch ourselves for a fork notification
+        EM.watch_process(Process.pid, ParentProcessWatcher)
+        $fork_pid = fork{ sleep }
+        child = EM.watch_process($fork_pid, ChildProcessWatcher)
+        $pid = child.pid
 
-      EM.add_timer(0.2){
-        Process.kill('TERM', $fork_pid)
+        EM.add_timer(0.2){
+          Process.kill('TERM', $fork_pid)
+        }
       }
-    }
 
-    assert_equal($pid, $fork_pid)
-    assert($forked)
-    assert($exited)
-    assert($unbind)
+      assert_equal($pid, $fork_pid)
+      assert($forked)
+      assert($exited)
+      assert($unbind)
+    end
   end
-end
+end