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use std::num::NonZeroU32;
use ron::error::{Error, Position, Span, SpannedError};
use serde::{
de::{Deserialize, Error as DeError, Unexpected},
Deserializer,
};
#[cfg(feature = "internal-span-substring-test")]
use ron::util::span_substring::check_error_span_inclusive;
#[cfg(feature = "internal-span-substring-test")]
use ron::util::span_substring::check_error_span_exclusive;
#[derive(Debug, serde::Deserialize, PartialEq)]
#[serde(deny_unknown_fields)]
enum Test {
TupleVariant(i32, String),
StructVariant { a: bool, b: NonZeroU32, c: i32 },
}
#[derive(Debug, PartialEq)] // GRCOV_EXCL_LINE
struct TypeError;
impl<'de> Deserialize<'de> for TypeError {
fn deserialize<D: Deserializer<'de>>(_deserializer: D) -> Result<Self, D::Error> {
Err(D::Error::invalid_type(Unexpected::Unit, &"impossible"))
}
}
#[test]
fn test_error_positions() {
let bogus_struct = " ()";
let expected_err = Err(SpannedError {
code: Error::InvalidValueForType {
expected: String::from("impossible"),
found: String::from("a unit value"),
},
span: Span {
start: Position { line: 1, col: 1 },
end: Position { line: 1, col: 3 },
},
});
assert_eq!(ron::from_str::<TypeError>(bogus_struct), expected_err,);
#[cfg(feature = "internal-span-substring-test")]
check_error_span_inclusive::<TypeError>(bogus_struct, expected_err, " (");
let bogus_struct = "StructVariant(a: true, b: 0, c: -42)";
let expected_err = Err(SpannedError {
code: Error::InvalidValueForType {
expected: String::from("a nonzero u32"),
found: String::from("the unsigned integer `0`"),
},
span: Span {
start: Position { line: 1, col: 27 },
end: Position { line: 1, col: 28 },
},
});
assert_eq!(ron::from_str::<Test>(bogus_struct), expected_err);
#[cfg(feature = "internal-span-substring-test")]
check_error_span_inclusive::<Test>(bogus_struct, expected_err, "0,");
let bogus_struct = "TupleVariant(42)";
let expected_err = Err(SpannedError {
code: Error::ExpectedDifferentLength {
expected: String::from("tuple variant Test::TupleVariant with 2 elements"),
found: 1,
},
span: Span {
start: Position { line: 1, col: 16 },
end: Position { line: 1, col: 16 },
},
});
assert_eq!(ron::from_str::<Test>(bogus_struct), expected_err);
#[cfg(feature = "internal-span-substring-test")]
check_error_span_inclusive::<Test>(bogus_struct, expected_err, ")");
let bogus_struct = "NotAVariant";
let expected_err = Err(SpannedError {
code: Error::NoSuchEnumVariant {
expected: &["TupleVariant", "StructVariant"],
found: String::from("NotAVariant"),
outer: Some(String::from("Test")),
},
span: Span {
start: Position { line: 1, col: 1 },
end: Position { line: 1, col: 12 },
},
});
assert_eq!(ron::from_str::<Test>(bogus_struct), expected_err);
#[cfg(feature = "internal-span-substring-test")]
check_error_span_exclusive::<Test>(bogus_struct, expected_err, "NotAVariant");
let bogus_struct = "StructVariant(a: true, b: 1, c: -42, d: \"gotcha\")";
let expected_err = Err(SpannedError {
code: Error::NoSuchStructField {
expected: &["a", "b", "c"],
found: String::from("d"),
outer: Some(String::from("StructVariant")),
},
span: Span {
start: Position { line: 1, col: 38 },
end: Position { line: 1, col: 39 },
},
});
assert_eq!(ron::from_str::<Test>(bogus_struct), expected_err);
#[cfg(feature = "internal-span-substring-test")]
check_error_span_inclusive::<Test>(bogus_struct, expected_err, "d:");
let bogus_struct = "StructVariant(a: true, c: -42)";
let expected_err = Err(SpannedError {
code: Error::MissingStructField {
field: "b",
outer: Some(String::from("StructVariant")),
},
span: Span {
start: Position { line: 1, col: 30 },
end: Position { line: 1, col: 30 },
},
});
assert_eq!(ron::from_str::<Test>(bogus_struct), expected_err);
#[cfg(feature = "internal-span-substring-test")]
check_error_span_inclusive::<Test>(bogus_struct, expected_err, ")");
let bogus_struct = "StructVariant(a: true, b: 1, a: false, c: -42)";
let expected_err = Err(SpannedError {
code: Error::DuplicateStructField {
field: "a",
outer: Some(String::from("StructVariant")),
},
span: Span {
start: Position { line: 1, col: 30 },
end: Position { line: 1, col: 31 },
},
});
assert_eq!(ron::from_str::<Test>(bogus_struct), expected_err);
#[cfg(feature = "internal-span-substring-test")]
check_error_span_inclusive::<Test>(bogus_struct, expected_err, "a:");
}
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