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e19a98cff7
Rust's test library allows test functions to return a Result, so that the test is deemed to have failed if the function returns a Result::Err variant. Currently, this works by having Result implement the Termination trait and asserting in assert_test_result that Termination::report() indicates successful completion. This turns a Result::Err into a panic, which is caught and unwound in the test library. This approach is problematic in certain environments where one wishes to save on both binary size and compute resources when running tests by: * Compiling all code with --panic=abort to avoid having to generate unwinding tables, and * Running most tests in-process to avoid the overhead of spawning new processes. This change removes the intermediate panic step and passes a Result::Err directly through to the test runner. To do this, it modifies assert_test_result to return a Result<(), String> where the Err variant holds what was previously the panic message. It changes the types in the TestFn enum to return Result<(), String>. This tries to minimise the changes to benchmark tests, so it calls unwrap() on the Result returned by assert_test_result, effectively keeping the same behaviour as before. |
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| .. | ||
| alloc | ||
| backtrace@07872f28cd | ||
| core | ||
| panic_abort | ||
| panic_unwind | ||
| portable-simd | ||
| proc_macro | ||
| profiler_builtins | ||
| rtstartup | ||
| rustc-std-workspace-alloc | ||
| rustc-std-workspace-core | ||
| rustc-std-workspace-std | ||
| std | ||
| stdarch@42df7394d3 | ||
| test | ||
| unwind | ||