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|
//! This checks the output of `--print=check-cfg`
extern crate run_make_support;
use std::collections::HashSet;
use std::iter::FromIterator;
use run_make_support::rustc;
struct CheckCfg {
args: &'static [&'static str],
contains: Contains,
}
enum Contains {
Some { contains: &'static [&'static str], doesnt_contain: &'static [&'static str] },
Only(&'static str),
}
fn main() {
check(CheckCfg { args: &[], contains: Contains::Only("any()=any()") });
check(CheckCfg {
args: &["--check-cfg=cfg()"],
contains: Contains::Some {
contains: &["unix", "miri"],
doesnt_contain: &["any()", "any()=any()"],
},
});
check(CheckCfg {
args: &["--check-cfg=cfg(any())"],
contains: Contains::Some {
contains: &["any()", "unix", r#"target_feature="crt-static""#],
doesnt_contain: &["any()=any()"],
},
});
check(CheckCfg {
args: &["--check-cfg=cfg(feature)"],
contains: Contains::Some {
contains: &["unix", "miri", "feature"],
doesnt_contain: &["any()", "any()=any()", "feature=none()", "feature="],
},
});
check(CheckCfg {
args: &[r#"--check-cfg=cfg(feature, values(none(), "", "test", "lol"))"#],
contains: Contains::Some {
contains: &["feature", "feature=\"\"", "feature=\"test\"", "feature=\"lol\""],
doesnt_contain: &["any()", "any()=any()", "feature=none()", "feature="],
},
});
check(CheckCfg {
args: &["--check-cfg=cfg(feature, values())"],
contains: Contains::Some {
contains: &["feature="],
doesnt_contain: &["any()", "any()=any()", "feature=none()", "feature"],
},
});
check(CheckCfg {
args: &["--check-cfg=cfg(feature, values())", "--check-cfg=cfg(feature, values(none()))"],
contains: Contains::Some {
contains: &["feature"],
doesnt_contain: &["any()", "any()=any()", "feature=none()", "feature="],
},
});
check(CheckCfg {
args: &[
r#"--check-cfg=cfg(feature, values(any()))"#,
r#"--check-cfg=cfg(feature, values("tmp"))"#,
],
contains: Contains::Some {
contains: &["unix", "miri", "feature=any()"],
doesnt_contain: &["any()", "any()=any()", "feature", "feature=", "feature=\"tmp\""],
},
});
check(CheckCfg {
args: &[
r#"--check-cfg=cfg(has_foo, has_bar)"#,
r#"--check-cfg=cfg(feature, values("tmp"))"#,
r#"--check-cfg=cfg(feature, values("tmp"))"#,
],
contains: Contains::Some {
contains: &["has_foo", "has_bar", "feature=\"tmp\""],
doesnt_contain: &["any()", "any()=any()", "feature"],
},
});
}
fn check(CheckCfg { args, contains }: CheckCfg) {
let output =
rustc().input("lib.rs").arg("-Zunstable-options").print("check-cfg").args(args).run();
let stdout = output.stdout_utf8();
let mut found = HashSet::<String>::new();
for l in stdout.lines() {
assert!(l == l.trim());
if let Some((left, right)) = l.split_once('=') {
if right != "any()" && right != "" {
assert!(right.starts_with("\""));
assert!(right.ends_with("\""));
}
assert!(!left.contains("\""));
} else {
assert!(!l.contains("\""));
}
assert!(found.insert(l.to_string()), "{}", &l);
}
match contains {
Contains::Some { contains, doesnt_contain } => {
{
let should_found =
HashSet::<String>::from_iter(contains.iter().map(|s| s.to_string()));
let diff: Vec<_> = should_found.difference(&found).collect();
assert!(
diff.is_empty(),
"should found: {:?}, didn't found {:?}",
&should_found,
&diff
);
}
{
let should_not_find =
HashSet::<String>::from_iter(doesnt_contain.iter().map(|s| s.to_string()));
let diff: Vec<_> = should_not_find.intersection(&found).collect();
assert!(
diff.is_empty(),
"should not find {:?}, did found {:?}",
&should_not_find,
&diff
);
}
}
Contains::Only(only) => {
assert!(found.contains(&only.to_string()), "{:?} != {:?}", &only, &found);
assert!(found.len() == 1, "len: {}, instead of 1", found.len());
}
}
}
|
