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Test expected == actual after verifying idempotence

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This commit is contained in:
Richard Feldman 2022-05-06 14:45:12 -04:00
parent a8991dc268
commit 36255b056b
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1 changed files with 8 additions and 2 deletions
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10
compiler/fmt/tests/test_fmt.rs
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@ -112,8 +112,6 @@ mod test_fmt {
let output = buf.as_str().trim();
assert_multiline_str_eq!(expected, output);
let (reparsed_ast, state) = module::parse_header(&arena, State::new(output.as_bytes())).unwrap_or_else(|err| {
panic!(
"After formatting, the source code no longer parsed!\n\nParse error was: {:?}\n\nThe code that failed to parse:\n\n{}\n\n",
@ -151,6 +149,14 @@ mod test_fmt {
assert_multiline_str_eq!(output, reformatted);
}
// If everything was idempotent re-parsing worked, finally assert
// that the formatted code was what we expected it to be.
//
// Do this last because if there were any serious problems with the
// formatter (e.g. it wasn't idempotent), we want to know about
// those more than we want to know that the expectation failed!
assert_multiline_str_eq!(expected, output);
}
Err(error) => panic!("Unexpected parse failure when parsing this for module header formatting:\n\n{:?}\n\nParse error was:\n\n{:?}\n\n", src, error)
};