diff options
Diffstat (limited to 'tests/auxiliary/mod.rs')
| -rw-r--r-- | tests/auxiliary/mod.rs | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/tests/auxiliary/mod.rs b/tests/auxiliary/mod.rs index 1457099..a0eb7c2 100644 --- a/tests/auxiliary/mod.rs +++ b/tests/auxiliary/mod.rs @@ -1,4 +1,9 @@ #![allow(dead_code, unused_macros)] +#![allow(box_pointers, unreachable_pub)] +#![allow(clippy::restriction)] + +use std::{env, fs, path::Path, process::Command}; +use tempfile::Builder; macro_rules! assert_unpin { ($ty:ty) => { @@ -10,3 +15,30 @@ macro_rules! assert_not_unpin { static_assertions::assert_not_impl_all!($ty: Unpin); }; } + +#[rustversion::attr(since(1.46), track_caller)] +pub fn assert_diff(expected_path: impl AsRef<Path>, actual: impl AsRef<str>) { + let actual = actual.as_ref(); + let manifest_dir = Path::new(env!("CARGO_MANIFEST_DIR")); + let expected_path = &manifest_dir.join(expected_path); + (|| -> Result<(), Box<dyn std::error::Error>> { + let expected = fs::read_to_string(expected_path)?; + if expected != actual { + if env::var_os("CI").is_some() { + let outdir = Builder::new().prefix("assert_diff").tempdir()?; + let actual_path = &outdir.path().join(expected_path.file_name().unwrap()); + fs::write(actual_path, actual)?; + let status = Command::new("git") + .args(&["--no-pager", "diff", "--no-index", "--"]) + .args(&[expected_path, actual_path]) + .status()?; + assert!(!status.success()); + panic!("assertion failed"); + } else { + fs::write(expected_path, actual)?; + } + } + Ok(()) + })() + .unwrap_or_else(|e| panic!("{}", e)) +} |