testcover-mark

testcover-mark is a compiled Lisp function in `testcover.el'.

(testcover-mark DEF)

Marks one DEF (a function or macro symbol) to highlight its contained forms
that did not get completely tested during coverage tests.
A marking with the face `testcover-nohits' (default = red) indicates that the
form was never evaluated. A marking using the `testcover-1value' face
(default = tan) indicates that the form always evaluated to the same value.
The forms throw, error, and signal are not marked. They do not return and
would always get a red mark. Some forms that always return the same
value (e.g., setq of a constant), always get a tan mark that can't be
eliminated by adding more test cases.