Continuous test-driven development (CTDD) is a way of making sure that computer programs work correctly by testing them regularly as they are being built. It is like building a puzzle, where you test each piece as you add it to make sure it fits and works correctly with the other pieces.
Imagine you are building a tower out of blocks. You start by placing the first block, and then you check if it is stable and can support the weight of the other blocks you will add. Then you add another block, and check again. You keep repeating this until you reach the top of the tower, always testing each block as you add it.
In CTDD, this process is automated using special tools that run tests on the code automatically every time a new feature or update is added. This way, any problems or mistakes can be detected early and fixed quickly.
Think of it like playing a game where you have to go through different levels. After finishing each level, you have to complete a test to make sure you understood and learned everything correctly, so you can move on to the next level.
In conclusion, CTDD is a process of continually testing computer programs while they are being built, so that any problems can be detected and fixed early. This ensures that the final product works correctly and is of high quality.