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Refactor --print=check-cfg test #125822

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Jun 2, 2024
Merged

Refactor --print=check-cfg test #125822

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150 changes: 86 additions & 64 deletions tests/run-make/print-check-cfg/rmake.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -8,61 +8,70 @@ use std::ops::Deref;

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(
/*args*/ &[],
/*has_any*/ false,
/*has_any_any*/ true,
/*contains*/ &[],
);
check(
/*args*/ &["--check-cfg=cfg()"],
/*has_any*/ false,
/*has_any_any*/ false,
/*contains*/ &["unix", "miri"],
);
check(
/*args*/ &["--check-cfg=cfg(any())"],
/*has_any*/ true,
/*has_any_any*/ false,
/*contains*/ &["windows", "test"],
);
check(
/*args*/ &["--check-cfg=cfg(feature)"],
/*has_any*/ false,
/*has_any_any*/ false,
/*contains*/ &["unix", "miri", "feature"],
);
check(
/*args*/ &[r#"--check-cfg=cfg(feature, values(none(), "", "test", "lol"))"#],
/*has_any*/ false,
/*has_any_any*/ false,
/*contains*/ &["feature", "feature=\"\"", "feature=\"test\"", "feature=\"lol\""],
);
check(
/*args*/
&[
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: &[
r#"--check-cfg=cfg(feature, values(any()))"#,
r#"--check-cfg=cfg(feature, values("tmp"))"#,
],
/*has_any*/ false,
/*has_any_any*/ false,
/*contains*/ &["unix", "miri", "feature=any()"],
);
check(
/*args*/
&[
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"))"#,
],
/*has_any*/ false,
/*has_any_any*/ false,
/*contains*/ &["has_foo", "has_bar", "feature=\"tmp\""],
);
contains: Contains::Some {
contains: &["has_foo", "has_bar", "feature=\"tmp\""],
doesnt_contain: &["any()", "any()=any()", "feature"],
},
});
}

fn check(args: &[&str], has_any: bool, has_any_any: bool, contains: &[&str]) {
fn check(CheckCfg { args, contains }: CheckCfg) {
let output = rustc()
.input("lib.rs")
.arg("-Zunstable-options")
Expand All @@ -72,18 +81,11 @@ fn check(args: &[&str], has_any: bool, has_any_any: bool, contains: &[&str]) {

let stdout = String::from_utf8(output.stdout).unwrap();

let mut found_any = false;
let mut found_any_any = false;
let mut found = HashSet::<String>::new();
let mut recorded = HashSet::<String>::new();

for l in stdout.lines() {
assert!(l == l.trim());
if l == "any()" {
found_any = true;
} else if l == "any()=any()" {
found_any_any = true;
} else if let Some((left, right)) = l.split_once('=') {
if let Some((left, right)) = l.split_once('=') {
if right != "any()" && right != "" {
assert!(right.starts_with("\""));
assert!(right.ends_with("\""));
Expand All @@ -92,17 +94,37 @@ fn check(args: &[&str], has_any: bool, has_any_any: bool, contains: &[&str]) {
} else {
assert!(!l.contains("\""));
}
assert!(recorded.insert(l.to_string()), "{}", &l);
if contains.contains(&l) {
assert!(found.insert(l.to_string()), "{}", &l);
}
assert!(found.insert(l.to_string()), "{}", &l);
}

let should_found = HashSet::<String>::from_iter(contains.iter().map(|s| s.to_string()));
let diff: Vec<_> = should_found.difference(&found).collect();

assert_eq!(found_any, has_any);
assert_eq!(found_any_any, has_any_any);
assert_eq!(found_any_any, recorded.len() == 1);
assert!(diff.is_empty(), "{:?} != {:?} (~ {:?})", &should_found, &found, &diff);
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());
}
}
}
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