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rust/tests/coverage
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Zalathar eb2d4cb541 coverage: Skip spans that can't be un-expanded back to the function body 
When we extract coverage spans from MIR, we try to "un-expand" them back to
spans that are inside the function's body span.

In cases where that doesn't succeed, the current code just swaps in the entire
body span instead. But that tends to result in coverage spans that are
completely unrelated to the control flow of the affected code, so it's better
to just discard those spans.
2023-12-03 12:35:33 +11:00
..
auxiliary
coverage: Regression test for #117788
2023-11-13 12:31:44 +11:00
abort.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
abort.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
abort.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
assert.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
assert.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
assert.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
async2.cov-map
coverage: Skip spans that can't be un-expanded back to the function body
2023-12-03 12:35:33 +11:00
async2.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
async2.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
async.cov-map
coverage: Skip spans that can't be un-expanded back to the function body
2023-12-03 12:35:33 +11:00
async.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
async.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
bad_counter_ids.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
bad_counter_ids.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
bad_counter_ids.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
closure_bug.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
closure_bug.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
closure_bug.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
closure_macro_async.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
closure_macro_async.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
closure_macro_async.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
closure_macro.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
closure_macro.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
closure_macro.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
closure.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
closure.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
closure.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
conditions.cov-map
coverage: Simplify building coverage expressions based on sums
2023-11-25 12:29:20 +11:00
conditions.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
conditions.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
continue.cov-map
coverage: Simplify building coverage expressions based on sums
2023-11-25 12:29:20 +11:00
continue.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
continue.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
coroutine.cov-map
coverage: Simplify building coverage expressions based on sums
2023-11-25 12:29:20 +11:00
coroutine.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
coroutine.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
dead_code.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
dead_code.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
dead_code.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
drop_trait.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
drop_trait.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
drop_trait.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
fn_sig_into_try.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
fn_sig_into_try.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
fn_sig_into_try.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
generics.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
generics.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
generics.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
if_else.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
if_else.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
if_else.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
if.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
if.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
if.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
inline-dead.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
inline-dead.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
inline-dead.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
inline.cov-map
coverage: Skip spans that can't be un-expanded back to the function body
2023-12-03 12:35:33 +11:00
inline.coverage
coverage: Skip spans that can't be un-expanded back to the function body
2023-12-03 12:35:33 +11:00
inline.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
inner_items.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
inner_items.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
inner_items.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
issue-83601.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
issue-83601.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
issue-83601.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
issue-84561.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
issue-84561.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
issue-84561.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
issue-85461.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
issue-85461.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
issue-85461.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
issue-93054.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
issue-93054.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
issue-93054.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
lazy_boolean.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
lazy_boolean.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
lazy_boolean.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
long_and_wide.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
long_and_wide.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
long_and_wide.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
loop_break_value.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
loop_break_value.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
loop_break_value.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
loops_branches.cov-map
coverage: Simplify building coverage expressions based on sums
2023-11-25 12:29:20 +11:00
loops_branches.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
loops_branches.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
macro_name_span.cov-map
coverage: Regression test for #117788
2023-11-13 12:31:44 +11:00
macro_name_span.coverage
coverage: Regression test for #117788
2023-11-13 12:31:44 +11:00
macro_name_span.rs
coverage: Regression test for #117788
2023-11-13 12:31:44 +11:00
match_or_pattern.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
match_or_pattern.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
match_or_pattern.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
nested_loops.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
nested_loops.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
nested_loops.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
no_cov_crate.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
no_cov_crate.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
no_cov_crate.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
overflow.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
overflow.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
overflow.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
panic_unwind.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
panic_unwind.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
panic_unwind.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
partial_eq.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
partial_eq.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
partial_eq.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
README.md
coverage: Rename the run-coverage test mode to coverage-run
2023-11-08 16:41:24 +11:00
simple_loop.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
simple_loop.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
simple_loop.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
simple_match.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
simple_match.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
simple_match.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
sort_groups.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
sort_groups.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
sort_groups.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
test_harness.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
test_harness.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
test_harness.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
thin-lto.cov-map
Add thinlto support to codegen, assembly and coverage tests
2023-11-30 18:48:03 +08:00
thin-lto.coverage
Add thinlto support to codegen, assembly and coverage tests
2023-11-30 18:48:03 +08:00
thin-lto.rs
Add thinlto support to codegen, assembly and coverage tests
2023-11-30 18:48:03 +08:00
tight_inf_loop.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
tight_inf_loop.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
tight_inf_loop.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
trivial.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
trivial.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
trivial.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
try_error_result.cov-map
coverage: Simplify building coverage expressions based on sums
2023-11-25 12:29:20 +11:00
try_error_result.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
try_error_result.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
unreachable.cov-map
coverage: Skip spans that can't be un-expanded back to the function body
2023-12-03 12:35:33 +11:00
unreachable.coverage
coverage: Skip spans that can't be un-expanded back to the function body
2023-12-03 12:35:33 +11:00
unreachable.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
unused_mod.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
unused_mod.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
unused_mod.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
unused.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
unused.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
unused.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
uses_crate.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
uses_crate.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
uses_crate.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
uses_inline_crate.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
uses_inline_crate.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
uses_inline_crate.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
while_early_ret.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
while_early_ret.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
while_early_ret.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
while.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
while.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
while.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
yield.cov-map
coverage: Migrate tests/coverage-map into tests/coverage
2023-11-07 11:15:19 +11:00
yield.coverage
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00
yield.rs
coverage: Migrate tests/run-coverage into tests/coverage
2023-11-07 11:15:19 +11:00

README.md

The tests in this directory are shared by two different test modes, and can be run in multiple different ways:

  • ./x.py test coverage-map (compiles to LLVM IR and checks coverage mappings)
  • ./x.py test coverage-run (runs a test binary and checks its coverage report)
  • ./x.py test coverage (runs both coverage-map and coverage-run)

Maintenance note

These tests can be sensitive to small changes in MIR spans or MIR control flow, especially in HIR-to-MIR lowering or MIR optimizations.

If you haven't touched the coverage code directly, and the tests still pass in coverage-run mode, then it should usually be OK to just re-bless the mappings as necessary with ./x.py test coverage-map --bless, without worrying too much about the exact changes.