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Diffstat (limited to '1.0.107/tests/test_expr.rs')
| -rw-r--r-- | 1.0.107/tests/test_expr.rs | 306 |
1 files changed, 0 insertions, 306 deletions
diff --git a/1.0.107/tests/test_expr.rs b/1.0.107/tests/test_expr.rs deleted file mode 100644 index e5b151fd..00000000 --- a/1.0.107/tests/test_expr.rs +++ /dev/null @@ -1,306 +0,0 @@ -#[macro_use] -mod macros; - -use proc_macro2::{Delimiter, Group, Ident, Punct, Spacing, Span, TokenStream, TokenTree}; -use quote::quote; -use std::iter::FromIterator; -use syn::{Expr, ExprRange}; - -#[test] -fn test_expr_parse() { - let tokens = quote!(..100u32); - snapshot!(tokens as Expr, @r###" - Expr::Range { - limits: HalfOpen, - to: Some(Expr::Lit { - lit: 100u32, - }), - } - "###); - - let tokens = quote!(..100u32); - snapshot!(tokens as ExprRange, @r###" - ExprRange { - limits: HalfOpen, - to: Some(Expr::Lit { - lit: 100u32, - }), - } - "###); -} - -#[test] -fn test_await() { - // Must not parse as Expr::Field. - let tokens = quote!(fut.await); - - snapshot!(tokens as Expr, @r###" - Expr::Await { - base: Expr::Path { - path: Path { - segments: [ - PathSegment { - ident: "fut", - arguments: None, - }, - ], - }, - }, - } - "###); -} - -#[rustfmt::skip] -#[test] -fn test_tuple_multi_index() { - let expected = snapshot!("tuple.0.0" as Expr, @r###" - Expr::Field { - base: Expr::Field { - base: Expr::Path { - path: Path { - segments: [ - PathSegment { - ident: "tuple", - arguments: None, - }, - ], - }, - }, - member: Unnamed(Index { - index: 0, - }), - }, - member: Unnamed(Index { - index: 0, - }), - } - "###); - - for &input in &[ - "tuple .0.0", - "tuple. 0.0", - "tuple.0 .0", - "tuple.0. 0", - "tuple . 0 . 0", - ] { - assert_eq!(expected, syn::parse_str(input).unwrap()); - } - - for tokens in vec![ - quote!(tuple.0.0), - quote!(tuple .0.0), - quote!(tuple. 0.0), - quote!(tuple.0 .0), - quote!(tuple.0. 0), - quote!(tuple . 0 . 0), - ] { - assert_eq!(expected, syn::parse2(tokens).unwrap()); - } -} - -#[test] -fn test_macro_variable_func() { - // mimics the token stream corresponding to `$fn()` - let tokens = TokenStream::from_iter(vec![ - TokenTree::Group(Group::new(Delimiter::None, quote! { f })), - TokenTree::Group(Group::new(Delimiter::Parenthesis, TokenStream::new())), - ]); - - snapshot!(tokens as Expr, @r###" - Expr::Call { - func: Expr::Group { - expr: Expr::Path { - path: Path { - segments: [ - PathSegment { - ident: "f", - arguments: None, - }, - ], - }, - }, - }, - } - "###); - - let tokens = TokenStream::from_iter(vec![ - TokenTree::Punct(Punct::new('#', Spacing::Alone)), - TokenTree::Group(Group::new(Delimiter::Bracket, quote! { outside })), - TokenTree::Group(Group::new(Delimiter::None, quote! { #[inside] f })), - TokenTree::Group(Group::new(Delimiter::Parenthesis, TokenStream::new())), - ]); - - snapshot!(tokens as Expr, @r###" - Expr::Call { - attrs: [ - Attribute { - style: Outer, - path: Path { - segments: [ - PathSegment { - ident: "outside", - arguments: None, - }, - ], - }, - tokens: TokenStream(``), - }, - ], - func: Expr::Group { - expr: Expr::Path { - attrs: [ - Attribute { - style: Outer, - path: Path { - segments: [ - PathSegment { - ident: "inside", - arguments: None, - }, - ], - }, - tokens: TokenStream(``), - }, - ], - path: Path { - segments: [ - PathSegment { - ident: "f", - arguments: None, - }, - ], - }, - }, - }, - } - "###); -} - -#[test] -fn test_macro_variable_macro() { - // mimics the token stream corresponding to `$macro!()` - let tokens = TokenStream::from_iter(vec![ - TokenTree::Group(Group::new(Delimiter::None, quote! { m })), - TokenTree::Punct(Punct::new('!', Spacing::Alone)), - TokenTree::Group(Group::new(Delimiter::Parenthesis, TokenStream::new())), - ]); - - snapshot!(tokens as Expr, @r###" - Expr::Macro { - mac: Macro { - path: Path { - segments: [ - PathSegment { - ident: "m", - arguments: None, - }, - ], - }, - delimiter: Paren, - tokens: TokenStream(``), - }, - } - "###); -} - -#[test] -fn test_macro_variable_struct() { - // mimics the token stream corresponding to `$struct {}` - let tokens = TokenStream::from_iter(vec![ - TokenTree::Group(Group::new(Delimiter::None, quote! { S })), - TokenTree::Group(Group::new(Delimiter::Brace, TokenStream::new())), - ]); - - snapshot!(tokens as Expr, @r###" - Expr::Struct { - path: Path { - segments: [ - PathSegment { - ident: "S", - arguments: None, - }, - ], - }, - } - "###); -} - -#[test] -fn test_macro_variable_match_arm() { - // mimics the token stream corresponding to `match v { _ => $expr }` - let tokens = TokenStream::from_iter(vec![ - TokenTree::Ident(Ident::new("match", Span::call_site())), - TokenTree::Ident(Ident::new("v", Span::call_site())), - TokenTree::Group(Group::new( - Delimiter::Brace, - TokenStream::from_iter(vec![ - TokenTree::Punct(Punct::new('_', Spacing::Alone)), - TokenTree::Punct(Punct::new('=', Spacing::Joint)), - TokenTree::Punct(Punct::new('>', Spacing::Alone)), - TokenTree::Group(Group::new(Delimiter::None, quote! { #[a] () })), - ]), - )), - ]); - - snapshot!(tokens as Expr, @r###" - Expr::Match { - expr: Expr::Path { - path: Path { - segments: [ - PathSegment { - ident: "v", - arguments: None, - }, - ], - }, - }, - arms: [ - Arm { - pat: Pat::Wild, - body: Expr::Group { - expr: Expr::Tuple { - attrs: [ - Attribute { - style: Outer, - path: Path { - segments: [ - PathSegment { - ident: "a", - arguments: None, - }, - ], - }, - tokens: TokenStream(``), - }, - ], - }, - }, - }, - ], - } - "###); -} - -// https://github.com/dtolnay/syn/issues/1019 -#[test] -fn test_closure_vs_rangefull() { - #[rustfmt::skip] // rustfmt bug: https://github.com/rust-lang/rustfmt/issues/4808 - let tokens = quote!(|| .. .method()); - snapshot!(tokens as Expr, @r###" - Expr::MethodCall { - receiver: Expr::Closure { - output: Default, - body: Expr::Range { - limits: HalfOpen, - }, - }, - method: "method", - } - "###); -} - -#[test] -fn test_postfix_operator_after_cast() { - syn::parse_str::<Expr>("|| &x as T[0]").unwrap_err(); - syn::parse_str::<Expr>("|| () as ()()").unwrap_err(); -} |