mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-27 09:14:20 +00:00
8d91e71e9a
These changes were made by manually running `rustfmt` on all of the test files, and then manually undoing all cases where the original formatting appeared to have been deliberate. `rustfmt +nightly --config-path=/dev/null --edition=2021 tests/run-coverage*/**/*.rs`
35 lines
1.8 KiB
Plaintext
35 lines
1.8 KiB
Plaintext
LL| |#![allow(unused_assignments)]
|
|
LL| |// failure-status: 101
|
|
LL| |
|
|
LL| 4|fn might_fail_assert(one_plus_one: u32) {
|
|
LL| 4| println!("does 1 + 1 = {}?", one_plus_one);
|
|
LL| 4| assert_eq!(1 + 1, one_plus_one, "the argument was wrong");
|
|
^1
|
|
LL| 3|}
|
|
LL| |
|
|
LL| 1|fn main() -> Result<(), u8> {
|
|
LL| 1| let mut countdown = 10;
|
|
LL| 11| while countdown > 0 {
|
|
LL| 11| if countdown == 1 {
|
|
LL| 1| might_fail_assert(3);
|
|
LL| 10| } else if countdown < 5 {
|
|
LL| 3| might_fail_assert(2);
|
|
LL| 6| }
|
|
LL| 10| countdown -= 1;
|
|
LL| | }
|
|
LL| 0| Ok(())
|
|
LL| 0|}
|
|
LL| |
|
|
LL| |// Notes:
|
|
LL| |// 1. Compare this program and its coverage results to those of the very similar test
|
|
LL| |// `panic_unwind.rs`, and similar tests `abort.rs` and `try_error_result.rs`.
|
|
LL| |// 2. This test confirms the coverage generated when a program passes or fails an `assert!()` or
|
|
LL| |// related `assert_*!()` macro.
|
|
LL| |// 3. Notably, the `assert` macros *do not* generate `TerminatorKind::Assert`. The macros produce
|
|
LL| |// conditional expressions, `TerminatorKind::SwitchInt` branches, and a possible call to
|
|
LL| |// `begin_panic_fmt()` (that begins a panic unwind, if the assertion test fails).
|
|
LL| |// 4. `TerminatoKind::Assert` is, however, also present in the MIR generated for this test
|
|
LL| |// (and in many other coverage tests). The `Assert` terminator is typically generated by the
|
|
LL| |// Rust compiler to check for runtime failures, such as numeric overflows.
|
|
|