What if we take an approach to software development that would significantly improve software quality? As you begin to design a system, think about how to make “manufacturing” and testing as efficient as possible throughout the entire product lifecycle.
When a physical product is designed for manufacturing, a lot of time is spent on organizing how the item is built and testing the completed product. Manufacturing issues and testing processes are addressed during the design phase, not at the time of production. Consider the design of a circuit board. It is necessary to include test points on a board, as they can’t be added later. While software affords the luxury of being able to include the tests later, the longer one waits, the more expensive it becomes.
Design software with testability in mind
During the initial design and prototyping of a software system, the focus is on functionality and performance. These two items are extremely important, but how useful are they if the resulting program is full of bugs and takes too many resources to maintain? If you are able to shift your focus to designing with “testability” in mind, or at least including it early in your process, then your resulting software code would be far higher in quality. In return, it leads to greater saved opportunity costs down the road. Consider the initiatives below to start moving in this direction.
Steps to test your code easily
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