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Harden duplicates checking and add tests

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Andy Caldwell 2022-07-28 23:05:24 +01:00
parent 08e7ec4047
commit ea25ef10cf
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5 changed files with 24 additions and 4 deletions
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12
clippy_lints/src/utils/conf.rs
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@ -92,8 +92,8 @@ impl fmt::Display for ConfError {
impl Error for ConfError {}
fn conf_error(s: String) -> Box<dyn Error> {
Box::new(ConfError(s))
fn conf_error(s: impl Into<String>) -> Box<dyn Error> {
Box::new(ConfError(s.into()))
}
macro_rules! define_Conf {
@ -154,7 +154,13 @@ macro_rules! define_Conf {
$name = Some(value);
// $new_conf is the same as one of the defined `$name`s, so
// this variable is defined in line 2 of this function.
$($new_conf = Some(value);)?
$(match $new_conf {
Some(_) => errors.push(conf_error(concat!(
"duplicate field `", stringify!($new_conf),
"` (provided as `", stringify!($name), "`)"
))),
None => $new_conf = Some(value),
})?
},
}
}

2
tests/ui-toml/conf_deprecated_key/clippy.toml
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@ -1,4 +1,4 @@
# that one is an error
# that one is a warning
cyclomatic-complexity-threshold = 2
# that one is white-listed

5
tests/ui-toml/duplicated_keys/clippy.toml Normal file
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@ -0,0 +1,5 @@
cognitive-complexity-threshold = 2
# This is the deprecated name for the same key
cyclomatic-complexity-threshold = 3
# Check we get duplication warning regardless of order
cognitive-complexity-threshold = 4

1
tests/ui-toml/duplicated_keys/duplicated_keys.rs Normal file
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@ -0,0 +1 @@
fn main() {}

8
tests/ui-toml/duplicated_keys/duplicated_keys.stderr Normal file
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@ -0,0 +1,8 @@
error: error reading Clippy's configuration file `$DIR/clippy.toml`: duplicate field `cognitive_complexity_threshold` (provided as `cyclomatic_complexity_threshold`)
error: error reading Clippy's configuration file `$DIR/clippy.toml`: duplicate field `cognitive-complexity-threshold`
warning: error reading Clippy's configuration file `$DIR/clippy.toml`: deprecated field `cyclomatic-complexity-threshold`. Please use `cognitive-complexity-threshold` instead
error: aborting due to 2 previous errors; 1 warning emitted