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use super::{iter_subs, parse_next_substitution as pns, Format as F, Num as N, Substitution as S};
macro_rules! assert_eq_pnsat {
($lhs:expr, $rhs:expr) => {
assert_eq!(
pns($lhs).and_then(|(s, _)| s.translate().ok()),
$rhs.map(<String as From<&str>>::from)
)
};
}
#[test]
fn test_escape() {
assert_eq!(pns("has no escapes"), None);
assert_eq!(pns("has no escapes, either %"), None);
assert_eq!(pns("*so* has a %% escape"), Some((S::Escape((11, 13)), " escape")));
assert_eq!(pns("%% leading escape"), Some((S::Escape((0, 2)), " leading escape")));
assert_eq!(pns("trailing escape %%"), Some((S::Escape((16, 18)), "")));
}
#[test]
fn test_parse() {
macro_rules! assert_pns_eq_sub {
($in_:expr, {
$param:expr, $flags:expr,
$width:expr, $prec:expr, $len:expr, $type_:expr,
$pos:expr,
}) => {
assert_eq!(
pns(concat!($in_, "!")),
Some((
S::Format(F {
span: $in_,
parameter: $param,
flags: $flags,
width: $width,
precision: $prec,
length: $len,
type_: $type_,
position: rustc_span::InnerSpan::new($pos.0, $pos.1),
}),
"!"
))
)
};
}
assert_pns_eq_sub!("%!",
{ None, "", None, None, None, "!", (0, 2), });
assert_pns_eq_sub!("%c",
{ None, "", None, None, None, "c", (0, 2), });
assert_pns_eq_sub!("%s",
{ None, "", None, None, None, "s", (0, 2), });
assert_pns_eq_sub!("%06d",
{ None, "0", Some(N::Num(6)), None, None, "d", (0, 4), });
assert_pns_eq_sub!("%4.2f",
{ None, "", Some(N::Num(4)), Some(N::Num(2)), None, "f", (0, 5), });
assert_pns_eq_sub!("%#x",
{ None, "#", None, None, None, "x", (0, 3), });
assert_pns_eq_sub!("%-10s",
{ None, "-", Some(N::Num(10)), None, None, "s", (0, 5), });
assert_pns_eq_sub!("%*s",
{ None, "", Some(N::Next), None, None, "s", (0, 3), });
assert_pns_eq_sub!("%-10.*s",
{ None, "-", Some(N::Num(10)), Some(N::Next), None, "s", (0, 7), });
assert_pns_eq_sub!("%-*.*s",
{ None, "-", Some(N::Next), Some(N::Next), None, "s", (0, 6), });
assert_pns_eq_sub!("%.6i",
{ None, "", None, Some(N::Num(6)), None, "i", (0, 4), });
assert_pns_eq_sub!("%+i",
{ None, "+", None, None, None, "i", (0, 3), });
assert_pns_eq_sub!("%08X",
{ None, "0", Some(N::Num(8)), None, None, "X", (0, 4), });
assert_pns_eq_sub!("%lu",
{ None, "", None, None, Some("l"), "u", (0, 3), });
assert_pns_eq_sub!("%Iu",
{ None, "", None, None, Some("I"), "u", (0, 3), });
assert_pns_eq_sub!("%I32u",
{ None, "", None, None, Some("I32"), "u", (0, 5), });
assert_pns_eq_sub!("%I64u",
{ None, "", None, None, Some("I64"), "u", (0, 5), });
assert_pns_eq_sub!("%'d",
{ None, "'", None, None, None, "d", (0, 3), });
assert_pns_eq_sub!("%10s",
{ None, "", Some(N::Num(10)), None, None, "s", (0, 4), });
assert_pns_eq_sub!("%-10.10s",
{ None, "-", Some(N::Num(10)), Some(N::Num(10)), None, "s", (0, 8), });
assert_pns_eq_sub!("%1$d",
{ Some(1), "", None, None, None, "d", (0, 4), });
assert_pns_eq_sub!("%2$.*3$d",
{ Some(2), "", None, Some(N::Arg(3)), None, "d", (0, 8), });
assert_pns_eq_sub!("%1$*2$.*3$d",
{ Some(1), "", Some(N::Arg(2)), Some(N::Arg(3)), None, "d", (0, 11), });
assert_pns_eq_sub!("%-8ld",
{ None, "-", Some(N::Num(8)), None, Some("l"), "d", (0, 5), });
}
#[test]
fn test_iter() {
let s = "The %d'th word %% is: `%.*s` %!\n";
let subs: Vec<_> = iter_subs(s, 0).map(|sub| sub.translate().ok()).collect();
assert_eq!(
subs.iter().map(|ms| ms.as_ref().map(|s| &s[..])).collect::<Vec<_>>(),
vec![Some("{}"), None, Some("{:.*}"), None]
);
}
/// Checks that the translations are what we expect.
#[test]
fn test_translation() {
assert_eq_pnsat!("%c", Some("{}"));
assert_eq_pnsat!("%d", Some("{}"));
assert_eq_pnsat!("%u", Some("{}"));
assert_eq_pnsat!("%x", Some("{:x}"));
assert_eq_pnsat!("%X", Some("{:X}"));
assert_eq_pnsat!("%e", Some("{:e}"));
assert_eq_pnsat!("%E", Some("{:E}"));
assert_eq_pnsat!("%f", Some("{}"));
assert_eq_pnsat!("%g", Some("{:e}"));
assert_eq_pnsat!("%G", Some("{:E}"));
assert_eq_pnsat!("%s", Some("{}"));
assert_eq_pnsat!("%p", Some("{:p}"));
assert_eq_pnsat!("%06d", Some("{:06}"));
assert_eq_pnsat!("%4.2f", Some("{:4.2}"));
assert_eq_pnsat!("%#x", Some("{:#x}"));
assert_eq_pnsat!("%-10s", Some("{:<10}"));
assert_eq_pnsat!("%*s", None);
assert_eq_pnsat!("%-10.*s", Some("{:<10.*}"));
assert_eq_pnsat!("%-*.*s", None);
assert_eq_pnsat!("%.6i", Some("{:06}"));
assert_eq_pnsat!("%+i", Some("{:+}"));
assert_eq_pnsat!("%08X", Some("{:08X}"));
assert_eq_pnsat!("%lu", Some("{}"));
assert_eq_pnsat!("%Iu", Some("{}"));
assert_eq_pnsat!("%I32u", Some("{}"));
assert_eq_pnsat!("%I64u", Some("{}"));
assert_eq_pnsat!("%'d", None);
assert_eq_pnsat!("%10s", Some("{:>10}"));
assert_eq_pnsat!("%-10.10s", Some("{:<10.10}"));
assert_eq_pnsat!("%1$d", Some("{0}"));
assert_eq_pnsat!("%2$.*3$d", Some("{1:02$}"));
assert_eq_pnsat!("%1$*2$.*3$s", Some("{0:>1$.2$}"));
assert_eq_pnsat!("%-8ld", Some("{:<8}"));
}
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