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257 changes: 121 additions & 136 deletions src/librustc_lexer/src/tests.rs
Original file line number Diff line number Diff line change
@@ -1,137 +1,122 @@
#[cfg(test)]
mod tests {
use crate::*;

fn check_raw_str(s: &str, expected_hashes: u16, expected_err: Option<RawStrError>) {
let s = &format!("r{}", s);
let mut cursor = Cursor::new(s);
cursor.bump();
let (n_hashes, err) = cursor.raw_double_quoted_string(0);
assert_eq!(n_hashes, expected_hashes);
assert_eq!(err, expected_err);
}

#[test]
fn test_naked_raw_str() {
check_raw_str(r#""abc""#, 0, None);
}

#[test]
fn test_raw_no_start() {
check_raw_str(r##""abc"#"##, 0, None);
}

#[test]
fn test_too_many_terminators() {
// this error is handled in the parser later
check_raw_str(r###"#"abc"##"###, 1, None);
}

#[test]
fn test_unterminated() {
check_raw_str(
r#"#"abc"#,
1,
Some(RawStrError::NoTerminator {
expected: 1,
found: 0,
possible_terminator_offset: None,
}),
);
check_raw_str(
r###"##"abc"#"###,
2,
Some(RawStrError::NoTerminator {
expected: 2,
found: 1,
possible_terminator_offset: Some(7),
}),
);
// We're looking for "# not just any #
check_raw_str(
r###"##"abc#"###,
2,
Some(RawStrError::NoTerminator {
expected: 2,
found: 0,
possible_terminator_offset: None,
}),
)
}

#[test]
fn test_invalid_start() {
check_raw_str(r##"#~"abc"#"##, 1, Some(RawStrError::InvalidStarter { bad_char: '~' }));
}

#[test]
fn test_unterminated_no_pound() {
// https://github.com/rust-lang/rust/issues/70677
check_raw_str(
r#"""#,
0,
Some(RawStrError::NoTerminator {
expected: 0,
found: 0,
possible_terminator_offset: None,
}),
);
}

#[test]
fn test_valid_shebang() {
// https://github.com/rust-lang/rust/issues/70528
let input = "#!/usr/bin/rustrun\nlet x = 5;";
assert_eq!(strip_shebang(input), Some(18));
}

#[test]
fn test_invalid_shebang_valid_rust_syntax() {
// https://github.com/rust-lang/rust/issues/70528
let input = "#! [bad_attribute]";
assert_eq!(strip_shebang(input), None);
}

#[test]
fn test_shebang_second_line() {
// Because shebangs are interpreted by the kernel, they must be on the first line
let input = "\n#!/bin/bash";
assert_eq!(strip_shebang(input), None);
}

#[test]
fn test_shebang_space() {
let input = "#! /bin/bash";
assert_eq!(strip_shebang(input), Some(input.len()));
}

#[test]
fn test_shebang_empty_shebang() {
let input = "#! \n[attribute(foo)]";
assert_eq!(strip_shebang(input), None);
}

#[test]
fn test_invalid_shebang_comment() {
let input = "#!//bin/ami/a/comment\n[";
assert_eq!(strip_shebang(input), None)
}

#[test]
fn test_invalid_shebang_another_comment() {
let input = "#!/*bin/ami/a/comment*/\n[attribute";
assert_eq!(strip_shebang(input), None)
}

#[test]
fn test_shebang_valid_rust_after() {
let input = "#!/*bin/ami/a/comment*/\npub fn main() {}";
assert_eq!(strip_shebang(input), Some(23))
}

#[test]
fn test_shebang_followed_by_attrib() {
let input = "#!/bin/rust-scripts\n#![allow_unused(true)]";
assert_eq!(strip_shebang(input), Some(19));
}
use super::*;

fn check_raw_str(s: &str, expected_hashes: u16, expected_err: Option<RawStrError>) {
let s = &format!("r{}", s);
let mut cursor = Cursor::new(s);
cursor.bump();
let (n_hashes, err) = cursor.raw_double_quoted_string(0);
assert_eq!(n_hashes, expected_hashes);
assert_eq!(err, expected_err);
}

#[test]
fn test_naked_raw_str() {
check_raw_str(r#""abc""#, 0, None);
}

#[test]
fn test_raw_no_start() {
check_raw_str(r##""abc"#"##, 0, None);
}

#[test]
fn test_too_many_terminators() {
// this error is handled in the parser later
check_raw_str(r###"#"abc"##"###, 1, None);
}

#[test]
fn test_unterminated() {
check_raw_str(
r#"#"abc"#,
1,
Some(RawStrError::NoTerminator { expected: 1, found: 0, possible_terminator_offset: None }),
);
check_raw_str(
r###"##"abc"#"###,
2,
Some(RawStrError::NoTerminator {
expected: 2,
found: 1,
possible_terminator_offset: Some(7),
}),
);
// We're looking for "# not just any #
check_raw_str(
r###"##"abc#"###,
2,
Some(RawStrError::NoTerminator { expected: 2, found: 0, possible_terminator_offset: None }),
)
}

#[test]
fn test_invalid_start() {
check_raw_str(r##"#~"abc"#"##, 1, Some(RawStrError::InvalidStarter { bad_char: '~' }));
}

#[test]
fn test_unterminated_no_pound() {
// https://github.com/rust-lang/rust/issues/70677
check_raw_str(
r#"""#,
0,
Some(RawStrError::NoTerminator { expected: 0, found: 0, possible_terminator_offset: None }),
);
}

#[test]
fn test_valid_shebang() {
// https://github.com/rust-lang/rust/issues/70528
let input = "#!/usr/bin/rustrun\nlet x = 5;";
assert_eq!(strip_shebang(input), Some(18));
}

#[test]
fn test_invalid_shebang_valid_rust_syntax() {
// https://github.com/rust-lang/rust/issues/70528
let input = "#! [bad_attribute]";
assert_eq!(strip_shebang(input), None);
}

#[test]
fn test_shebang_second_line() {
// Because shebangs are interpreted by the kernel, they must be on the first line
let input = "\n#!/bin/bash";
assert_eq!(strip_shebang(input), None);
}

#[test]
fn test_shebang_space() {
let input = "#! /bin/bash";
assert_eq!(strip_shebang(input), Some(input.len()));
}

#[test]
fn test_shebang_empty_shebang() {
let input = "#! \n[attribute(foo)]";
assert_eq!(strip_shebang(input), None);
}

#[test]
fn test_invalid_shebang_comment() {
let input = "#!//bin/ami/a/comment\n[";
assert_eq!(strip_shebang(input), None)
}

#[test]
fn test_invalid_shebang_another_comment() {
let input = "#!/*bin/ami/a/comment*/\n[attribute";
assert_eq!(strip_shebang(input), None)
}

#[test]
fn test_shebang_valid_rust_after() {
let input = "#!/*bin/ami/a/comment*/\npub fn main() {}";
assert_eq!(strip_shebang(input), Some(23))
}

#[test]
fn test_shebang_followed_by_attrib() {
let input = "#!/bin/rust-scripts\n#![allow_unused(true)]";
assert_eq!(strip_shebang(input), Some(19));
}