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arti config exhaust checking: Improve message, add comment 

I had a failure that was confusing to me, and I wrote it...
This commit is contained in:
Ian Jackson 2022-10-07 17:25:39 +01:00
parent 82ad9eea5f
commit 7393ea6dd4
1 changed files with 4 additions and 2 deletions
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6
crates/arti/src/cfg.rs
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@ -643,9 +643,11 @@ mod test {
.map(|(path, m)| format!(" config key {:?}: {}", path, m)) .map(|(path, m)| format!(" config key {:?}: {}", path, m))
.collect_vec(); .collect_vec();
// If this assert fails, it might be because in `fn exhaustive`, below,
// a newly-defined config item has not been added to the list for OLDEST_SUPPORTED_CONFIG.
assert! { problems.is_empty(), assert! { problems.is_empty(),
"example config exhaustiveness check failed for {:?}:\n{}\n", "example config exhaustiveness check failed: {}\n-----8<-----\n{}\n-----8<-----\n",
example_file, problems.join("\n")} problems.join("\n"), example_file}
} }
#[test] #[test]