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#![allow(unused_assignments)]
// failure-status: 101
fn might_fail_assert(one_plus_one: u32) {
println!("does 1 + 1 = {}?", one_plus_one);
assert_eq!(1 + 1, one_plus_one, "the argument was wrong");
}
fn main() -> Result<(), u8> {
let mut countdown = 10;
while countdown > 0 {
if countdown == 1 {
might_fail_assert(3);
} else if countdown < 5 {
might_fail_assert(2);
}
countdown -= 1;
}
Ok(())
}
// Notes:
// 1. Compare this program and its coverage results to those of the very similar test
// `panic_unwind.rs`, and similar tests `abort.rs` and `try_error_result.rs`.
// 2. This test confirms the coverage generated when a program passes or fails an `assert!()` or
// related `assert_*!()` macro.
// 3. Notably, the `assert` macros *do not* generate `TerminatorKind::Assert`. The macros produce
// conditional expressions, `TerminatorKind::SwitchInt` branches, and a possible call to
// `begin_panic_fmt()` (that begins a panic unwind, if the assertion test fails).
// 4. `TerminatoKind::Assert` is, however, also present in the MIR generated for this test
// (and in many other coverage tests). The `Assert` terminator is typically generated by the
// Rust compiler to check for runtime failures, such as numeric overflows.
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