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While SPARK requires these pragmas for proof, it's not necessary to declare them on these generic packages; they can be deferred to the generic instantiation (which is the user's responsibility). Having them declared in LibSAP is overly restrictive as the user may want a different profile (e.g. Ravenscar), and also restricts their use in non-SPARK programs, e.g. using the full Ada runtime. Therefore, it's better to remove them from LibSAP and let the user decide if they need them.
This requires a recent version of GNATcoverage that has support for the Ada2022 language features used by LibSAP. This script was tested with GNATcoverage 26.1.
The suite contains just one test for now.
This makes it possible to fully cover all decisions in Increment_Wrapping during testing while keeping the workaround for the compiler warning.
These functions are used for specification only; they are not executed at run-time (unless ghost assertions are enabled).
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This sets up some initial unit tests.
The tests can optionally be run with code coverage using GNATcoverage, but it requires a recent version of GNATcoverage (I tested it against GNAT DAS 26.1).
The testsuite doesn't reach 100% coverage yet, since this PR just lays the initial groundwork for the tests.