From e9d04c5e2444526ffde83662f2d57fa35c772891 Mon Sep 17 00:00:00 2001 From: Zalathar Date: Wed, 1 Nov 2023 21:26:53 +1100 Subject: coverage: Migrate `tests/run-coverage` into `tests/coverage` --- tests/coverage/assert.coverage | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 tests/coverage/assert.coverage (limited to 'tests/coverage/assert.coverage') diff --git a/tests/coverage/assert.coverage b/tests/coverage/assert.coverage new file mode 100644 index 00000000000..8b997724c4a --- /dev/null +++ b/tests/coverage/assert.coverage @@ -0,0 +1,34 @@ + 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. + -- cgit 1.4.1-3-g733a5