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Add simple test for syntax_node_to_token_tree_censored

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This commit is contained in:
Lukas Wirth 2021-08-25 19:22:22 +02:00
parent d6134b6802
commit 1195cb50c2
4 changed files with 46 additions and 3 deletions
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41
crates/mbe/src/tests.rs
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@ -228,3 +228,44 @@ fn debug_dump_ignore_spaces(node: &syntax::SyntaxNode) -> String {
buf
}
#[test]
fn test_node_to_tt_censor() {
use syntax::ast::{AttrsOwner, ModuleItemOwner};
let source = r##"
#[attr0]
#[attr1]
#[attr2]
struct Struct {
field: ()
}
"##;
let source_file = ast::SourceFile::parse(&source).ok().unwrap();
let item = source_file.items().next().unwrap();
let attr = item.attrs().nth(1).unwrap();
let (tt, _) =
syntax_node_to_token_tree_censored(item.syntax(), Some(attr.syntax().text_range()));
expect_test::expect![[r##"# [attr0] # [attr2] struct Struct {field : ()}"##]]
.assert_eq(&tt.to_string());
let source = r##"
#[derive(Derive0)]
#[derive(Derive1)]
#[derive(Derive2)]
struct Struct {
field: ()
}
"##;
let source_file = ast::SourceFile::parse(&source).ok().unwrap();
let item = source_file.items().next().unwrap();
let attr = item.attrs().nth(1).unwrap();
let (tt, _) = syntax_node_to_token_tree_censored(
item.syntax(),
Some(attr.syntax().text_range().cover_offset(0.into())),
);
expect_test::expect![[r##"# [derive (Derive2)] struct Struct {field : ()}"##]]
.assert_eq(&tt.to_string());
}