testjig

noun
UK /ˈtɛst dʒɪɡ/
US /ˈtɛst dʒɪɡ/

A special tool that holds a thing steady so you can check if it works.

The engineer placed the circuit board in the testjig to check it.


OTHER MEANINGS

2. A custom-built frame used in manufacturing to hold a part during automated testing.

Each production line uses a dedicated testjig for its own model.

3. A software harness that runs repeatable checks on a program.

The developer wrote a testjig to verify the login flow.

4. Any temporary setup used to try out an idea before building the real thing.

They built a quick testjig from scrap wood to see if the shape worked.