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Diffstat (limited to 'crates/hir-def/src/macro_expansion_tests/proc_macros.rs')
| -rw-r--r-- | crates/hir-def/src/macro_expansion_tests/proc_macros.rs | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/crates/hir-def/src/macro_expansion_tests/proc_macros.rs b/crates/hir-def/src/macro_expansion_tests/proc_macros.rs new file mode 100644 index 0000000000..0ca30fb799 --- /dev/null +++ b/crates/hir-def/src/macro_expansion_tests/proc_macros.rs @@ -0,0 +1,94 @@ +//! Tests for user-defined procedural macros. +//! +//! Note `//- proc_macros: identity` fixture metas in tests -- we don't use real +//! proc-macros here, as that would be slow. Instead, we use several hard-coded +//! in-memory macros. +use expect_test::expect; + +use crate::macro_expansion_tests::check; + +#[test] +fn attribute_macro_attr_censoring() { + cov_mark::check!(attribute_macro_attr_censoring); + check( + r#" +//- proc_macros: identity +#[attr1] #[proc_macros::identity] #[attr2] +struct S; +"#, + expect![[r##" +#[attr1] #[proc_macros::identity] #[attr2] +struct S; + +#[attr1] +#[attr2] struct S;"##]], + ); +} + +#[test] +fn derive_censoring() { + cov_mark::check!(derive_censoring); + check( + r#" +//- proc_macros: derive_identity +//- minicore:derive +#[attr1] +#[derive(Foo)] +#[derive(proc_macros::DeriveIdentity)] +#[derive(Bar)] +#[attr2] +struct S; +"#, + expect![[r##" +#[attr1] +#[derive(Foo)] +#[derive(proc_macros::DeriveIdentity)] +#[derive(Bar)] +#[attr2] +struct S; + +#[attr1] +#[derive(Bar)] +#[attr2] struct S;"##]], + ); +} + +#[test] +fn attribute_macro_syntax_completion_1() { + // this is just the case where the input is actually valid + check( + r#" +//- proc_macros: identity_when_valid +#[proc_macros::identity_when_valid] +fn foo() { bar.baz(); blub } +"#, + expect![[r##" +#[proc_macros::identity_when_valid] +fn foo() { bar.baz(); blub } + +fn foo() { + bar.baz(); + blub +}"##]], + ); +} + +#[test] +fn attribute_macro_syntax_completion_2() { + // common case of dot completion while typing + check( + r#" +//- proc_macros: identity_when_valid +#[proc_macros::identity_when_valid] +fn foo() { bar.; blub } +"#, + expect![[r##" +#[proc_macros::identity_when_valid] +fn foo() { bar.; blub } + +fn foo() { + bar. ; + blub +}"##]], + ); +} |