Answers
What is TDD?
In short
Test-Driven Development (TDD) writes the test before the code: red (failing test), green (make it pass), refactor (improve the design).
Short answer
Test-Driven Development (TDD) writes the test before the code: red (failing test), green (make it pass), refactor (improve the design).
What this actually means in practice
Done well, TDD produces designs that are easier to test and easier to change. Done badly, it produces brittle low-value tests against implementation details. The discipline is in the refactor step.
The most common pitfall
Calling 'unit tests for everything' TDD without ever inverting the order.
What to do next
Pair on one feature done strictly TDD-first before adopting it as a team norm.
Frequently asked questions
Does Forth Systems help with this?
Yes — Forth Systems works with banks, payment institutions, insurers and infrastructure operators on exactly this kind of work. Engagements start with a fixed-scope assessment so you see the shape before committing.
How experienced is the team?
Engagements are staffed by named, UK-based senior engineers — not a rotating offshore pool. References from the second line of comparable clients are available on request.
Where are you based?
Edinburgh-based, delivering UK-wide with onsite presence in London and across Scotland as required.
How fast can we start?
Most engagements start within 2-4 weeks of a signed SoW, faster where an existing supplier framework is in place.