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SSR: Add a couple of tests for non-recursive search

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These tests already pass, however once we switch to non-recursive
search, it'd be easy for these tests to not pass.
This commit is contained in:
David Lattimore 2020-07-22 16:00:57 +10:00
parent 6fcaaa1201
commit 699619a65c
1 changed files with 33 additions and 0 deletions
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33
crates/ra_ssr/src/tests.rs
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@ -585,6 +585,27 @@ fn replace_within_macro_expansion() {
)
}
#[test]
fn replace_outside_and_within_macro_expansion() {
assert_ssr_transform(
"foo($a) ==>> bar($a)",
r#"
fn foo() {} fn bar() {}
macro_rules! macro1 {
($a:expr) => {$a}
}
fn f() {foo(foo(macro1!(foo(foo(42)))))}
"#,
expect![[r#"
fn foo() {} fn bar() {}
macro_rules! macro1 {
($a:expr) => {$a}
}
fn f() {bar(bar(macro1!(bar(bar(42)))))}
"#]],
)
}
#[test]
fn preserves_whitespace_within_macro_expansion() {
assert_ssr_transform(
@ -631,3 +652,15 @@ fn match_failure_reasons() {
r#"Pattern wanted token '42' (INT_NUMBER), but code had token '43' (INT_NUMBER)"#,
);
}
#[test]
fn overlapping_possible_matches() {
// There are three possible matches here, however the middle one, `foo(foo(foo(42)))` shouldn't
// match because it overlaps with the outer match. The inner match is permitted since it's is
// contained entirely within the placeholder of the outer match.
assert_matches(
"foo(foo($a))",
"fn foo() {} fn main() {foo(foo(foo(foo(42))))}",
&["foo(foo(42))", "foo(foo(foo(foo(42))))"],
);
}