The Approach

Decouple I revolutionizes how companies test C and C++ code by making even the most deeply embedded and tightly coupled code instantly testable, without touching a single line of production code.

Our approach

Decouple I integrates seamlessly with your existing build process. It instruments compiled code during build time, identifying all function calls including constructors, destructors, templates, and inlined functions. At each call site, it inserts a dynamic control point.

These "mock points" let you decide at runtime whether a function should execute the real implementation or a mock version. That means you can test any part of your system, no matter how legacy or intertwined, without modifying your architecture or rewriting any code.

Why Decouple I matters

Most test tools only work if your code is already designed for testing. Decouple I makes it possible to test any codebase, even legacy or tightly coupled systems, without intrusive changes. That is the difference between 0 percent test coverage and 95 percent. For teams working with legacy systems, Decouple I unlocks faster development, higher product quality, and long-term confidence, without the cost of rewriting the codebase.

Decouple I turns untestable code into tested code. Instantly.

1. Zero code changes

You do not need to restructure your code, add indirection, or maintain mock classes. Just compile and test.

2. Full runtime flexibility

You can switch between real and mock behavior without recompiling, dramatically speeding up test cycles.

3. Unmatched reach

Decouple I can mock constructors, destructors, templates, and overloaded operators, even in code that lacks interfaces or virtual methods.

4. Fast onboarding

What used to take weeks of manual refactoring now takes minutes. Legacy code becomes testable almost instantly.

5. Freedom of test strategy

Decouple I lets you choose your test approach. You can test internal behavior if needed or rely entirely on black-box testing. Refactoring only breaks your tests if you have chosen to tie them to implementation details. Decouple I does not force you in either direction.