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Add test against line number underflow

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This commit is contained in:
Felix Maurer 2022-03-31 23:37:23 +02:00
parent a98ffe4268
commit feb8ccacba
2 changed files with 107 additions and 0 deletions
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64
crates/rust-analyzer/src/diagnostics/test_data/reasonable_line_numbers_from_empty_file.txt Normal file
View file

@ -0,0 +1,64 @@
[
MappedRustDiagnostic {
url: Url {
scheme: "file",
cannot_be_a_base: false,
username: "",
password: None,
host: None,
port: None,
path: "/test/src/bin/current.rs",
query: None,
fragment: None,
},
diagnostic: Diagnostic {
range: Range {
start: Position {
line: 0,
character: 0,
},
end: Position {
line: 0,
character: 0,
},
},
severity: Some(
Error,
),
code: Some(
String(
"E0601",
),
),
code_description: Some(
CodeDescription {
href: Url {
scheme: "https",
cannot_be_a_base: false,
username: "",
password: None,
host: Some(
Domain(
"doc.rust-lang.org",
),
),
port: None,
path: "/error-index.html",
query: None,
fragment: Some(
"E0601",
),
},
},
),
source: Some(
"rustc",
),
message: "`main` function not found in crate `current`\nconsider adding a `main` function to `src/bin/current.rs`",
related_information: None,
tags: None,
data: None,
},
fix: None,
},
]

43
crates/rust-analyzer/src/diagnostics/to_proto.rs
View file

@ -1680,4 +1680,47 @@ mod tests {
expect_file!["./test_data/snap_multi_line_fix.txt"],
);
}
#[test]
fn reasonable_line_numbers_from_empty_file() {
check(
r##"{
"message": "`main` function not found in crate `current`",
"code": {
"code": "E0601",
"explanation": "No `main` function was found in a binary crate.\n\nTo fix this error, add a `main` function:\n\n```\nfn main() {\n // Your program will start here.\n println!(\"Hello world!\");\n}\n```\n\nIf you don't know the basics of Rust, you can look at the\n[Rust Book][rust-book] to get started.\n\n[rust-book]: https://doc.rust-lang.org/book/\n"
},
"level": "error",
"spans": [
{
"file_name": "src/bin/current.rs",
"byte_start": 0,
"byte_end": 0,
"line_start": 0,
"line_end": 0,
"column_start": 1,
"column_end": 1,
"is_primary": true,
"text": [],
"label": null,
"suggested_replacement": null,
"suggestion_applicability": null,
"expansion": null
}
],
"children": [
{
"message": "consider adding a `main` function to `src/bin/current.rs`",
"code": null,
"level": "note",
"spans": [],
"children": [],
"rendered": null
}
],
"rendered": "error[E0601]: `main` function not found in crate `current`\n |\n = note: consider adding a `main` function to `src/bin/current.rs`\n\n"
}"##,
expect_file!["./test_data/reasonable_line_numbers_from_empty_file.txt"],
);
}
}