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use crate::Literal;
#[test]
fn empty() {
assert_err!(Literal, "", Empty, None);
}
#[test]
fn invalid_literals() {
assert_err_single!(Literal::parse("."), InvalidLiteral, None);
assert_err_single!(Literal::parse("+"), InvalidLiteral, None);
assert_err_single!(Literal::parse("-"), InvalidLiteral, None);
assert_err_single!(Literal::parse("e"), InvalidLiteral, None);
assert_err_single!(Literal::parse("e8"), InvalidLiteral, None);
assert_err_single!(Literal::parse("f32"), InvalidLiteral, None);
assert_err_single!(Literal::parse("foo"), InvalidLiteral, None);
assert_err_single!(Literal::parse("inf"), InvalidLiteral, None);
assert_err_single!(Literal::parse("nan"), InvalidLiteral, None);
assert_err_single!(Literal::parse("NaN"), InvalidLiteral, None);
assert_err_single!(Literal::parse("NAN"), InvalidLiteral, None);
assert_err_single!(Literal::parse("_2.7"), InvalidLiteral, None);
assert_err_single!(Literal::parse(".5"), InvalidLiteral, None);
}
#[test]
fn misc() {
assert_err_single!(Literal::parse("0x44.5"), UnexpectedChar, 4..6);
assert_err_single!(Literal::parse("a"), InvalidLiteral, None);
assert_err_single!(Literal::parse(";"), InvalidLiteral, None);
assert_err_single!(Literal::parse("0;"), UnexpectedChar, 1);
assert_err_single!(Literal::parse(" 0"), InvalidLiteral, None);
assert_err_single!(Literal::parse("0 "), UnexpectedChar, 1);
assert_err_single!(Literal::parse("_"), InvalidLiteral, None);
assert_err_single!(Literal::parse("_3"), InvalidLiteral, None);
assert_err_single!(Literal::parse("a_123"), InvalidLiteral, None);
assert_err_single!(Literal::parse("B_123"), InvalidLiteral, None);
}
macro_rules! assert_no_panic {
($input:expr) => {
let arr = $input;
let input = std::str::from_utf8(&arr).expect("not unicode");
let res = std::panic::catch_unwind(move || {
let _ = Literal::parse(input);
let _ = crate::BoolLit::parse(input);
let _ = crate::IntegerLit::parse(input);
let _ = crate::FloatLit::parse(input);
let _ = crate::CharLit::parse(input);
let _ = crate::StringLit::parse(input);
let _ = crate::ByteLit::parse(input);
let _ = crate::ByteStringLit::parse(input);
});
if let Err(e) = res {
println!("\n!!! panic for: {:?}", input);
std::panic::resume_unwind(e);
}
};
}
#[test]
#[ignore]
fn never_panic_up_to_3() {
for a in 0..128 {
assert_no_panic!([a]);
for b in 0..128 {
assert_no_panic!([a, b]);
for c in 0..128 {
assert_no_panic!([a, b, c]);
}
}
}
}
// This test takes super long in debug mode, but in release mode it's fine.
#[test]
#[ignore]
fn never_panic_len_4() {
for a in 0..128 {
for b in 0..128 {
for c in 0..128 {
for d in 0..128 {
assert_no_panic!([a, b, c, d]);
}
}
}
}
}
#[cfg(feature = "proc-macro2")]
#[test]
fn proc_macro() {
use std::convert::TryFrom;
use proc_macro2::{
self as pm2, TokenTree, Group, TokenStream, Delimiter, Spacing, Punct, Span, Ident,
};
use crate::{
BoolLit, ByteLit, ByteStringLit, CharLit, FloatLit, IntegerLit, StringLit, err::TokenKind
};
macro_rules! assert_invalid_token {
($input:expr, expected: $expected:path, actual: $actual:path $(,)?) => {
let err = $input.unwrap_err();
if err.expected != $expected {
panic!(
"err.expected was expected to be {:?}, but is {:?}",
$expected,
err.expected,
);
}
if err.actual != $actual {
panic!("err.actual was expected to be {:?}, but is {:?}", $actual, err.actual);
}
};
}
let pm_u16_lit = pm2::Literal::u16_suffixed(2700);
let pm_i16_lit = pm2::Literal::i16_unsuffixed(3912);
let pm_f32_lit = pm2::Literal::f32_unsuffixed(3.14);
let pm_f64_lit = pm2::Literal::f64_suffixed(99.3);
let pm_string_lit = pm2::Literal::string("hello 🦊");
let pm_bytestr_lit = pm2::Literal::byte_string(b"hello \nfoxxo");
let pm_char_lit = pm2::Literal::character('🦀');
let u16_lit = Literal::parse("2700u16".to_string()).unwrap();
let i16_lit = Literal::parse("3912".to_string()).unwrap();
let f32_lit = Literal::parse("3.14".to_string()).unwrap();
let f64_lit = Literal::parse("99.3f64".to_string()).unwrap();
let string_lit = Literal::parse(r#""hello 🦊""#.to_string()).unwrap();
let bytestr_lit = Literal::parse(r#"b"hello \nfoxxo""#.to_string()).unwrap();
let char_lit = Literal::parse("'🦀'".to_string()).unwrap();
assert_eq!(Literal::from(&pm_u16_lit), u16_lit);
assert_eq!(Literal::from(&pm_i16_lit), i16_lit);
assert_eq!(Literal::from(&pm_f32_lit), f32_lit);
assert_eq!(Literal::from(&pm_f64_lit), f64_lit);
assert_eq!(Literal::from(&pm_string_lit), string_lit);
assert_eq!(Literal::from(&pm_bytestr_lit), bytestr_lit);
assert_eq!(Literal::from(&pm_char_lit), char_lit);
let group = TokenTree::from(Group::new(Delimiter::Brace, TokenStream::new()));
let punct = TokenTree::from(Punct::new(':', Spacing::Alone));
let ident = TokenTree::from(Ident::new("peter", Span::call_site()));
assert_eq!(
Literal::try_from(TokenTree::Literal(pm2::Literal::string("hello 🦊"))).unwrap(),
Literal::String(StringLit::parse(r#""hello 🦊""#.to_string()).unwrap()),
);
assert_invalid_token!(
Literal::try_from(punct.clone()),
expected: TokenKind::Literal,
actual: TokenKind::Punct,
);
assert_invalid_token!(
Literal::try_from(group.clone()),
expected: TokenKind::Literal,
actual: TokenKind::Group,
);
assert_invalid_token!(
Literal::try_from(ident.clone()),
expected: TokenKind::Literal,
actual: TokenKind::Ident,
);
assert_eq!(Literal::from(IntegerLit::try_from(pm_u16_lit.clone()).unwrap()), u16_lit);
assert_eq!(Literal::from(IntegerLit::try_from(pm_i16_lit.clone()).unwrap()), i16_lit);
assert_eq!(Literal::from(FloatLit::try_from(pm_f32_lit.clone()).unwrap()), f32_lit);
assert_eq!(Literal::from(FloatLit::try_from(pm_f64_lit.clone()).unwrap()), f64_lit);
assert_eq!(Literal::from(StringLit::try_from(pm_string_lit.clone()).unwrap()), string_lit);
assert_eq!(
Literal::from(ByteStringLit::try_from(pm_bytestr_lit.clone()).unwrap()),
bytestr_lit,
);
assert_eq!(Literal::from(CharLit::try_from(pm_char_lit.clone()).unwrap()), char_lit);
assert_invalid_token!(
StringLit::try_from(pm_u16_lit.clone()),
expected: TokenKind::StringLit,
actual: TokenKind::IntegerLit,
);
assert_invalid_token!(
StringLit::try_from(pm_f32_lit.clone()),
expected: TokenKind::StringLit,
actual: TokenKind::FloatLit,
);
assert_invalid_token!(
ByteLit::try_from(pm_bytestr_lit.clone()),
expected: TokenKind::ByteLit,
actual: TokenKind::ByteStringLit,
);
assert_invalid_token!(
ByteLit::try_from(pm_i16_lit.clone()),
expected: TokenKind::ByteLit,
actual: TokenKind::IntegerLit,
);
assert_invalid_token!(
IntegerLit::try_from(pm_string_lit.clone()),
expected: TokenKind::IntegerLit,
actual: TokenKind::StringLit,
);
assert_invalid_token!(
IntegerLit::try_from(pm_char_lit.clone()),
expected: TokenKind::IntegerLit,
actual: TokenKind::CharLit,
);
assert_eq!(
Literal::from(IntegerLit::try_from(TokenTree::from(pm_u16_lit.clone())).unwrap()),
u16_lit,
);
assert_eq!(
Literal::from(IntegerLit::try_from(TokenTree::from(pm_i16_lit.clone())).unwrap()),
i16_lit,
);
assert_eq!(
Literal::from(FloatLit::try_from(TokenTree::from(pm_f32_lit.clone())).unwrap()),
f32_lit,
);
assert_eq!(
Literal::from(FloatLit::try_from(TokenTree::from(pm_f64_lit.clone())).unwrap()),
f64_lit,
);
assert_eq!(
Literal::from(StringLit::try_from(TokenTree::from(pm_string_lit.clone())).unwrap()),
string_lit,
);
assert_eq!(
Literal::from(ByteStringLit::try_from(TokenTree::from(pm_bytestr_lit.clone())).unwrap()),
bytestr_lit,
);
assert_eq!(
Literal::from(CharLit::try_from(TokenTree::from(pm_char_lit.clone())).unwrap()),
char_lit,
);
assert_invalid_token!(
StringLit::try_from(TokenTree::from(pm_u16_lit.clone())),
expected: TokenKind::StringLit,
actual: TokenKind::IntegerLit,
);
assert_invalid_token!(
StringLit::try_from(TokenTree::from(pm_f32_lit.clone())),
expected: TokenKind::StringLit,
actual: TokenKind::FloatLit,
);
assert_invalid_token!(
BoolLit::try_from(TokenTree::from(pm_bytestr_lit.clone())),
expected: TokenKind::BoolLit,
actual: TokenKind::ByteStringLit,
);
assert_invalid_token!(
BoolLit::try_from(TokenTree::from(pm_i16_lit.clone())),
expected: TokenKind::BoolLit,
actual: TokenKind::IntegerLit,
);
assert_invalid_token!(
IntegerLit::try_from(TokenTree::from(pm_string_lit.clone())),
expected: TokenKind::IntegerLit,
actual: TokenKind::StringLit,
);
assert_invalid_token!(
IntegerLit::try_from(TokenTree::from(pm_char_lit.clone())),
expected: TokenKind::IntegerLit,
actual: TokenKind::CharLit,
);
assert_invalid_token!(
StringLit::try_from(TokenTree::from(group)),
expected: TokenKind::StringLit,
actual: TokenKind::Group,
);
assert_invalid_token!(
BoolLit::try_from(TokenTree::from(punct)),
expected: TokenKind::BoolLit,
actual: TokenKind::Punct,
);
assert_invalid_token!(
FloatLit::try_from(TokenTree::from(ident)),
expected: TokenKind::FloatLit,
actual: TokenKind::Ident,
);
}
#[cfg(feature = "proc-macro2")]
#[test]
fn bool_try_from_tt() {
use std::convert::TryFrom;
use proc_macro2::{Ident, Span, TokenTree};
use crate::BoolLit;
let ident = |s: &str| Ident::new(s, Span::call_site());
assert_eq!(BoolLit::try_from(TokenTree::Ident(ident("true"))).unwrap(), BoolLit::True);
assert_eq!(BoolLit::try_from(TokenTree::Ident(ident("false"))).unwrap(), BoolLit::False);
assert!(BoolLit::try_from(TokenTree::Ident(ident("falsex"))).is_err());
assert!(BoolLit::try_from(TokenTree::Ident(ident("_false"))).is_err());
assert!(BoolLit::try_from(TokenTree::Ident(ident("False"))).is_err());
assert!(BoolLit::try_from(TokenTree::Ident(ident("True"))).is_err());
assert!(BoolLit::try_from(TokenTree::Ident(ident("ltrue"))).is_err());
assert_eq!(
Literal::try_from(TokenTree::Ident(ident("true"))).unwrap(),
Literal::Bool(BoolLit::True),
);
assert_eq!(
Literal::try_from(TokenTree::Ident(ident("false"))).unwrap(),
Literal::Bool(BoolLit::False),
);
assert!(Literal::try_from(TokenTree::Ident(ident("falsex"))).is_err());
assert!(Literal::try_from(TokenTree::Ident(ident("_false"))).is_err());
assert!(Literal::try_from(TokenTree::Ident(ident("False"))).is_err());
assert!(Literal::try_from(TokenTree::Ident(ident("True"))).is_err());
assert!(Literal::try_from(TokenTree::Ident(ident("ltrue"))).is_err());
}
#[cfg(feature = "proc-macro2")]
#[test]
fn invalid_token_display() {
use crate::{InvalidToken, err::TokenKind};
let span = crate::err::Span::Two(proc_macro2::Span::call_site());
assert_eq!(
InvalidToken {
actual: TokenKind::StringLit,
expected: TokenKind::FloatLit,
span,
}.to_string(),
r#"expected a float literal (e.g. `3.14`), but found a string literal (e.g. "Ferris")"#,
);
assert_eq!(
InvalidToken {
actual: TokenKind::Punct,
expected: TokenKind::Literal,
span,
}.to_string(),
r#"expected a literal, but found a punctuation character"#,
);
}