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This is the topic of Scrum Breakfast meetup this time, speaker: Ms. Phuong Bui - Technical Project Manager of YOOSE Pte. Ltd. http://www.meetup.com/Scrum-Breakfast-Vietnam-Agile-and-Scrum-Meetup/events/230313727/ Lean comes from Lean manufacturing is a method that focuses on elimination of wastes. In other words, this is a set of principles for archiving the quality, speed and customer alignment. The first time I knew about the term "Lean" is  from the book Software Craftsmanship . Sandro recommends if we want to transform our pet projects into a real business, we should get familiar with Lean Startup concepts. In this talk, Ms. Phuong pointed out some major wastes includes information (ex: unclear requirements), processes (ex: waiting), physical environment and people. Knowing what the problems should be the best way to eliminate them. The difference between  Single item flow and Batch processing is the second main point; and it is the Lean's idea. Batch pr...

When writing unit test, there are some cases that I have to mock objects: It makes sense to mock provided objects by libraries (APIs) such as FacesContext (JSF) because of no real environment running. It makes sense to mock a lower layer objects and it is already tested, for example: mocking Dao layer objects when testing Service layer (Service calls Dao) . At beginning I was aware of Mockito (a mocking framework) in order to overcome the issue. And currently, I am interested in another way like an alternative because it looks more simple. That is just create mock objects manually and just do anything we want. I've just known this approach from Primefaces' source code. :) Follow my simple example below and we can see what different from these 2 ways are: I have an interface Foo and a class Bar public interface Foo { String greet(); } public class Bar { public String greet(Foo foo){ return foo.greet(); } } Using Mockito example: public class M...

Today, I love to tell you about my team story about testing. That started from no testing to extreme testing system.  eXtreme Feedback Devices (https://jenkins.io/blog/2013/09/05/ext reme-feedback-lamp-switch-gear-style/ ) Guess what? That is really an exciting idea from the picture(no?). These devices can work with Jenkins. Whenever they build a Jenkins job, this system notifies instantly to developers the status of their system. That is not 100% related to testing but somehow it is like our testing mindset. Because, in my team,  we call our testing system is a defense system :). There is no doubt that it is very hard for us to remember all features of our applications even which is developed for a long time. Like a document, tests help us make sure no features will be lost after changes such as adding new more features, fixing bugs or refactoring code. That was the reason why we cared much about testing. It was really important for developing apps. Ba...

HCM full stack developer Meetup This is the topic of HMC full stack developers' meetup this time. We have shared our ideas and discussed about them. Most of discussions is focused on career path for developers in Vietnam and what next we will do in 2016. I have a problem with my career path in Vietnam. I seem to get lost my motivation because I don't like to become either a manager or a TA (such as Technical Assistant, Technical Analysis, Technical Architect). But, why only are there either manager or TA in Vietnam? How about a 60-years experiences developer? Salary is actually an issue. I admire several great developers in the world such as Jeff Atwood ( stackoverflow.com founder), John Sonmez ( simpleprogrammer.com fouder). They created very great and valuable stuffs for the community and they are free of finance - of course, I think. Why can't I follow that way? I would like to not only create cool stuffs but also get high salary. I love to becom...

Source: http://www.goodreads.com/book/show/18054154-software-craftsmanship My first time to know about the term "Software Craftsmanship" is from Agile Tour Vietnam 2015. I finally read this book written by Sandro Mancuso who I met at this event. Software Craftsmanship is a metaphor for software development: software as a craft and developers as blacksmiths. In other words, Software Craftsmanship is about professionalism in software development. The Software Craftsmanship manifesto: Not only working software, but also well-crafted software : regardless how old the application is, developers can understand it easily; high an reliable test coverage, clear and simple design, business language well expressed in the code. Not only responding to change, but also steadily adding value : constantly improving the structure of the code, keeping it clean, extendable, testable, and easy to maintain; always leave the code cleaner than we found it. Not only individuals and int...

My team just started  building a new project about finance. There are something new with us rather than other processes happened before. Here is we didn't have requirements/user stories about the project yet and we needed to work together with another team in this time. Our product manager (PM) decided to have a camp to collect the ideas in order to getting started as well as make the communication between the teams. Firstly, our PM gave an introduction about the project to all members. Then, we decided to split and focus on four topics that we needed to discuss about them. They are: - General information: working agreements between two teams included coding convention. - Data model: structure of data. - GUI design: user interface and user experience (UX). - GUI technical framework: how data model and GUI can be worked together. The target of each topics should be given an overview and can be shown why and how to work with chosen approach. Finally, we separated all memb...

Barcamp Saigon is one of my most expected events of the year. This year, it took place at RMIT university. As usual, it brought many useful topics to the community. Here is all topics that I have attended. Scale it! - Lars Jankowfsky Lars is founder of 8bitrockr.com How do we make a decision correctly? It is hard to know that until we try and measure it. He gave an example about how good an app was. And, most of people thought that the app with nice user interfaces is good at the first look. But it is not correct because it is only true until we try to use it, even the nice GUI app sometime is not good at UX, functionalities, etc. The key of success for working in team is collaboration. We can not only base on the experience of members likes: "In my opinions| As I know.... this is the best way..bla..bla.." but we should test it. Therefore, manually testing as well as automation testing is more and more necessary nowadays. "Don't think, just try...