Architect Consultant blog

Introduction Testability is one of the underestimated qualities of software. This is also the case for WSO2 ESB projects. However it is important to design the integrations for testability and this starts with the way you setup the proxies. This blog gives some guidelines which you can use to design for testability. Sequences Sequences are a way in WSO2 to group Mediators. A proxy has by default an in-Sequence, out-sequence and optionally an error-sequence. These sequences can be split up in sub-sequences and this is a good way for reuse, but also a way to split up the design. A proxy usually contains the following functional parts: Validation Transformation Sending to an endpoint   These parts can be put in separate sequences. This has the advantage that the part scan be reused in other proxies. This is also the way to enable testing for these parts.  Design for testability The sequences are the basis for the testability of WSO2 ESB proxies. Th