Merge #42 r=@johnnyman727: Removes unnessary listener removal and add…

…s test

index.js

@@ -276,9 +276,6 @@ Ambient.prototype._setListening = function(enable, event) {
       // stop polling
       clearTimeout(self._pollTimeout);
       self._pollTimeout = null;
-      if(this.irqwatcher) {
-        this.attiny.irq.removeListener('high', this.irqwatcher);
-      }
     }
   }
 };

test/listeners.js

@@ -0,0 +1,82 @@
+var test = require('tinytap');
+var tessel = require('tessel');
+var ambientlib = require('../');
+
+var portname = process.argv[2] || 'A';
+var timeout = 1500;
+var triggerVal = 0.001; // light trigger
+
+var t;
+var ambient;
+
+test.count(1);
+
+test("Using multiple kinds of listeners", function(tester) {
+  t = tester;
+  ambient = ambientlib.use(tessel.port[portname], start);
+
+  ambient.on('error', function(err) {
+    t.fail(err.message);
+  })
+})
+
+function start () {
+  var numEvents = 2;
+  var countEvents = 0;
+
+  // Set a light data timer
+  var lightDataTimer = setTimeout(function () {
+    t.fail('failed to emit a light data event in a reasonable amount of time');
+  }, timeout);
+
+  // Wait for light readings
+  ambient.on('light', function (data) {
+    // Clear that light data timer
+    clearTimeout(lightDataTimer);
+    // Remove ALL Listeners!
+    ambient.removeAllListeners('light');
+    // There was another event
+    countEvents++;
+    // If there were x number of events
+    if(countEvents == numEvents) {
+      // add a lighttrigger listener
+      light();
+    }
+  });
+
+  // Set a sound data tmer
+  var soundDataTimer = setTimeout(function () {
+    t.fail('failed to emit a sound data event in a reasonable amount of time')
+  }, timeout);
+  // When we get sound
+  ambient.on('sound', function (data) {
+    // clear the timeout
+    clearTimeout(soundDataTimer);
+    // remove the sound listeners
+    ambient.removeAllListeners('sound');
+    // we shouldn't get another event
+    countEvents++;
+    // if we do
+    if(countEvents == numEvents) {
+      // start the light trigger listener
+      light();
+    }
+  });
+}
+
+function light () {
+  ambient.setLightTrigger(triggerVal, function (err, val) {
+    var s = new Date();
+    var failLightTrigger = setTimeout(function () {
+      t.fail('Light trigger timed out.')
+    }, timeout);
+    ambient.on('light-trigger', function (datum) {
+      // Timeout cancelled
+      clearTimeout(failLightTrigger);
+      ambient.clearLightTrigger(function (err, val) {
+        t.equal(err, null);
+        t.end();
+      });
+    });
+  });
+}