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Add test for delim bug

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This commit is contained in:
Edwin Cheng 2020-03-19 20:40:25 +08:00
parent 92b561b5c7
commit 27c516970b
2 changed files with 149 additions and 14 deletions
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60
crates/ra_mbe/src/tests.rs
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@ -427,22 +427,28 @@ MACRO_ITEMS@[0; 40)
);
}
fn to_subtree(tt: &tt::TokenTree) -> &tt::Subtree {
if let tt::TokenTree::Subtree(subtree) = tt {
return &subtree;
}
unreachable!("It is not a subtree");
}
fn to_literal(tt: &tt::TokenTree) -> &tt::Literal {
if let tt::TokenTree::Leaf(tt::Leaf::Literal(lit)) = tt {
return lit;
}
unreachable!("It is not a literal");
}
fn to_punct(tt: &tt::TokenTree) -> &tt::Punct {
if let tt::TokenTree::Leaf(tt::Leaf::Punct(lit)) = tt {
return lit;
}
unreachable!("It is not a Punct");
}
#[test]
fn test_expand_literals_to_token_tree() {
fn to_subtree(tt: &tt::TokenTree) -> &tt::Subtree {
if let tt::TokenTree::Subtree(subtree) = tt {
return &subtree;
}
unreachable!("It is not a subtree");
}
fn to_literal(tt: &tt::TokenTree) -> &tt::Literal {
if let tt::TokenTree::Leaf(tt::Leaf::Literal(lit)) = tt {
return lit;
}
unreachable!("It is not a literal");
}
let expansion = parse_macro(
r#"
macro_rules! literals {
@ -470,6 +476,22 @@ fn test_expand_literals_to_token_tree() {
assert_eq!(to_literal(&stm_tokens[15 + 3]).text, "\"rust1\"");
}
#[test]
fn test_attr_to_token_tree() {
let expansion = parse_to_token_tree_by_syntax(
r#"
#[derive(Copy)]
struct Foo;
"#,
);
assert_eq!(to_punct(&expansion.token_trees[0]).char, '#');
assert_eq!(
to_subtree(&expansion.token_trees[1]).delimiter_kind(),
Some(tt::DelimiterKind::Bracket)
);
}
#[test]
fn test_two_idents() {
parse_macro(
@ -1517,6 +1539,16 @@ pub(crate) fn parse_macro(ra_fixture: &str) -> MacroFixture {
MacroFixture { rules }
}
pub(crate) fn parse_to_token_tree_by_syntax(ra_fixture: &str) -> tt::Subtree {
let source_file = ast::SourceFile::parse(ra_fixture).ok().unwrap();
let tt = syntax_node_to_token_tree(source_file.syntax()).unwrap().0;
let parsed = parse_to_token_tree(ra_fixture).unwrap().0;
assert_eq!(tt, parsed);
parsed
}
fn debug_dump_ignore_spaces(node: &ra_syntax::SyntaxNode) -> String {
let mut level = 0;
let mut buf = String::new();