increased test coverage for smtp appender

lib/appenders/smtp.js

@@ -22,32 +22,31 @@ function smtpAppender(config, layout) {
 	var sendTimer;
 	
 	function sendBuffer() {
-    if (logEventBuffer.length === 0) {
-			return;
-    }
+    if (logEventBuffer.length > 0) {
 		
-		var transport = mailer.createTransport(config.transport, config[config.transport]);
-		var firstEvent = logEventBuffer[0];
-		var body = "";
-		while (logEventBuffer.length > 0) {
-			body += layout(logEventBuffer.shift()) + "\n";
-		}
+      var transport = mailer.createTransport(config.transport, config[config.transport]);
+      var firstEvent = logEventBuffer[0];
+      var body = logEventBuffer.map(layout).join('\n');
+      var msg = {
+        to: config.recipients,
+        subject: config.subject || subjectLayout(firstEvent),
+        text: body,
+        headers: { "Hostname": os.hostname() }
+      };
 
-		var msg = {
-			to: config.recipients,
-			subject: config.subject || subjectLayout(firstEvent),
-			text: body,
-			headers: {"Hostname": os.hostname()}
-		};
-		if (config.sender) {
-			msg.from = config.sender;
+      if (config.sender) {
+        msg.from = config.sender;
+      }
+
+      transport.sendMail(msg, function(error, success) {
+        if (error) {
+          console.error("log4js.smtpAppender - Error happened", error);
+        }
+        transport.close();
+      });
+
+      logEventBuffer = [];
     }
-		transport.sendMail(msg, function(error, success) {
-			if (error) {
-				console.error("log4js.smtpAppender - Error happened ", error);
-			}
-      transport.close();
-		});
 	}
 	
 	function scheduleSend() {

test/smtpAppender-test.js

@@ -21,10 +21,31 @@ function setupLogging(category, options) {
 		}
   };
 
+  var fakeLayouts = {
+    layout: function(type, config) {
+      this.type = type;
+      this.config = config;
+      return log4js.layouts.messagePassThroughLayout;
+    },
+    basicLayout: log4js.layouts.basicLayout,
+    messagePassThroughLayout: log4js.layouts.messagePassThroughLayout
+  };
+
+  var fakeConsole = {
+    errors: [],
+    error: function(msg, value) {
+      this.errors.push({ msg: msg, value: value });
+    }
+  };
+
   var smtpModule = sandbox.require('../lib/appenders/smtp', {
 		requires: {
-      'nodemailer': fakeMailer
-		}
+      'nodemailer': fakeMailer,
+      '../layouts': fakeLayouts
+		},
+    globals: {
+      console: fakeConsole
+    }
   });
 
   log4js.addAppender(smtpModule.configure(options), category);
@@ -32,6 +53,8 @@ function setupLogging(category, options) {
   return {
 		logger: log4js.getLogger(category),
 		mailer: fakeMailer,
+    layouts: fakeLayouts,
+    console: fakeConsole,
 		results: msgs
   };
 }
@@ -93,6 +116,19 @@ vows.describe('log4js smtpAppender').addBatch({
       checkMessages(result, 'sender@domain.com', 'This is subject');
     }
   },
+  'config with layout': {
+    topic: function() {
+      var setup = setupLogging('config with layout', {
+        layout: {
+          type: "tester"
+        }
+      });
+      return setup;
+    },
+    'should configure layout': function(result) {
+      assert.equal(result.layouts.type, 'tester');
+    }
+  },
   'separate email for each event': {
     topic: function() {
       var self = this;
@@ -164,6 +200,34 @@ vows.describe('log4js smtpAppender').addBatch({
       assert.equal(result.results[1].subject, 'Log event #3');
       assert.ok(new RegExp('.+Log event #3\n$').test(result.results[1].text));
     }
+  },
+  'error when sending email': {
+    topic: function() {
+      var setup = setupLogging('error when sending email', {
+        recipients: 'recipient@domain.com',
+        sendInterval: 0,
+        transport: 'SMTP',
+        SMTP: { port: 25, auth: { user: 'user@domain.com' } }
+      });
+
+      setup.mailer.createTransport = function() {
+        return {
+          sendMail: function(msg, cb) {
+            cb({ message: "oh noes" });
+          },
+          close: function() { }
+        };
+      };
+      
+      setup.logger.info("This will break");
+      return setup.console;
+    },
+    'should be logged to console': function(cons) {
+      assert.equal(cons.errors.length, 1);
+      assert.equal(cons.errors[0].msg, "log4js.smtpAppender - Error happened");
+      assert.equal(cons.errors[0].value.message, 'oh noes');
+    }
   }
+
 }).export(module);