[test] Basic tests for Logger plugin

test/plugins/logger-test.js

@@ -0,0 +1,57 @@
+var assert = require('assert'),
+    vows = require('vows')
+    StreamMock = require('../helpers/mocks/stream').StreamMock,
+    MonitorMock = require('../helpers/mocks/monitor').MonitorMock,
+    logger = require('../../lib/forever/plugins/logger');
+
+vows.describe('forever/plugins/logger').addBatch({
+  'When using `logger` plugin': {
+    'with a custom stream': {
+      topic: function () {
+        var stdoutMock = new StreamMock();
+        var stderrMock = new StreamMock();
+
+        var monitorMock = new MonitorMock();
+        monitorMock.use(logger, { stdout: stdoutMock, stderr: stderrMock });
+
+        monitorMock.emit('start');
+
+        for (var i = 0; i < 4; i++) {
+          monitorMock.child.stdout.emit('data', 'stdout ' + i);
+          monitorMock.child.stderr.emit('data', 'stderr ' + i);
+        }
+
+        this.callback(null, {
+          monitor: monitorMock,
+          stdout: stdoutMock,
+          stderr: stderrMock
+        });
+      },
+      'should output correct number of lines': function (mocks) {
+        assert.deepEqual(
+          mocks.stdout.contents,
+          ['stdout 0', 'stdout 1', 'stdout 2', 'stdout 3']
+        );
+        assert.deepEqual(
+          mocks.stderr.contents,
+          ['stderr 0', 'stderr 1', 'stderr 2', 'stderr 3']
+        );
+      },
+      "after `exit` event": {
+        topic: function (mocks) {
+          var self = this;
+
+          mocks.monitor.emit('exit');
+          process.nextTick(function () {
+            self.callback(null, mocks);
+          });
+        },
+        "stream shouldn't be closed": function (mocks) {
+          assert.isFalse(mocks.stdout.closed);
+          assert.isFalse(mocks.stderr.closed);
+        }
+      }
+    }
+  }
+}).export(module);
+