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tests: add a vlib/v/tests/known_errors/known_errors_test.v test runner

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Delyan Angelov 2022-04-03 12:44:22 +03:00
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TESTS.md
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@ -83,6 +83,20 @@ This *test runner*, checks whether whole project folders, can be compiled, and r
NB: Each project in these folders, should finish with an exit code of 0,
and it should output `OK` as its last stdout line.
## `v vlib/v/tests/known_errors/known_errors_test.v`
This *test runner*, checks whether a known program, that was expected to compile,
but did NOT, due to a buggy checker, parser or cgen, continues to fail.
The negative programs are collected in the `vlib/v/tests/known_errors/testdata/` folder.
Each of them should FAIL to compile, due to a known/confirmed compiler bug/limitation.
The intended use of this, is for providing samples, that currently do NOT compile,
but that a future compiler improvement WILL be able to compile, and to
track, whether they were not fixed incidentally, due to an unrelated
change/improvement. For example, code that triggers generating invalid C code can go here,
and later when a bug is fixed, can be moved to a proper _test.v or .vv/.out pair, outside of
the `vlib/v/tests/known_errors/testdata/` folder.
## Test building of actual V programs (examples, tools, V itself)
* `v build-tools`