diff options
| -rw-r--r-- | clippy_lints/src/wildcard_imports.rs | 13 | ||||
| -rw-r--r-- | tests/ui/wildcard_imports.fixed | 25 | ||||
| -rw-r--r-- | tests/ui/wildcard_imports.rs | 24 | ||||
| -rw-r--r-- | tests/ui/wildcard_imports.stderr | 14 |
4 files changed, 64 insertions, 12 deletions
diff --git a/clippy_lints/src/wildcard_imports.rs b/clippy_lints/src/wildcard_imports.rs index 48405a00d55..e12a6659ab5 100644 --- a/clippy_lints/src/wildcard_imports.rs +++ b/clippy_lints/src/wildcard_imports.rs @@ -43,9 +43,14 @@ declare_clippy_lint! { /// /// This can lead to confusing error messages at best and to unexpected behavior at worst. /// - /// Note that this will not warn about wildcard imports from modules named `prelude`; many - /// crates (including the standard library) provide modules named "prelude" specifically - /// designed for wildcard import. + /// **Exceptions:** + /// + /// Wildcard imports are allowed from modules named `prelude`. Many crates (including the standard library) + /// provide modules named "prelude" specifically designed for wildcard import. + /// + /// `use super::*` is allowed in test modules. This is defined as any module with "test" in the name. + /// + /// These exceptions can be disabled using the `warn-on-all-wildcard-imports` configuration flag. /// /// **Known problems:** If macros are imported through the wildcard, this macro is not included /// by the suggestion and has to be added by hand. @@ -198,5 +203,5 @@ fn is_super_only_import(segments: &[PathSegment<'_>]) -> bool { } fn is_test_module_or_function(item: &Item<'_>) -> bool { - matches!(item.kind, ItemKind::Fn(..) | ItemKind::Mod(..)) && item.ident.name.as_str().contains("test") + matches!(item.kind, ItemKind::Mod(..)) && item.ident.name.as_str().contains("test") } diff --git a/tests/ui/wildcard_imports.fixed b/tests/ui/wildcard_imports.fixed index 98bf6acfe55..b47c8f23e24 100644 --- a/tests/ui/wildcard_imports.fixed +++ b/tests/ui/wildcard_imports.fixed @@ -175,13 +175,34 @@ mod super_imports { } } - mod inner { - fn test_should_pass() { + mod test_should_pass_inside_function { + fn with_super_inside_function() { use super::*; let _ = foofoo(); } } + mod test_should_pass_further_inside { + fn insidefoo() {} + mod inner { + use super::*; + fn with_super() { + let _ = insidefoo(); + } + } + } + + mod should_be_replaced_futher_inside { + fn insidefoo() {} + mod inner { + use super::insidefoo; + fn with_super() { + let _ = insidefoo(); + } + } + } + + mod use_explicit_should_be_replaced { use super_imports::foofoo; diff --git a/tests/ui/wildcard_imports.rs b/tests/ui/wildcard_imports.rs index 9275c5a0928..3ad1a29aeba 100644 --- a/tests/ui/wildcard_imports.rs +++ b/tests/ui/wildcard_imports.rs @@ -176,13 +176,33 @@ mod super_imports { } } - mod inner { - fn test_should_pass() { + mod test_should_pass_inside_function { + fn with_super_inside_function() { use super::*; let _ = foofoo(); } } + mod test_should_pass_further_inside { + fn insidefoo() {} + mod inner { + use super::*; + fn with_super() { + let _ = insidefoo(); + } + } + } + + mod should_be_replaced_futher_inside { + fn insidefoo() {} + mod inner { + use super::*; + fn with_super() { + let _ = insidefoo(); + } + } + } + mod use_explicit_should_be_replaced { use super_imports::*; diff --git a/tests/ui/wildcard_imports.stderr b/tests/ui/wildcard_imports.stderr index bd000ce8161..de07bd1d69b 100644 --- a/tests/ui/wildcard_imports.stderr +++ b/tests/ui/wildcard_imports.stderr @@ -99,22 +99,28 @@ LL | use super::*; | ^^^^^^^^ help: try: `super::foofoo` error: usage of wildcard import - --> $DIR/wildcard_imports.rs:187:13 + --> $DIR/wildcard_imports.rs:199:17 + | +LL | use super::*; + | ^^^^^^^^ help: try: `super::insidefoo` + +error: usage of wildcard import + --> $DIR/wildcard_imports.rs:208:13 | LL | use super_imports::*; | ^^^^^^^^^^^^^^^^ help: try: `super_imports::foofoo` error: usage of wildcard import - --> $DIR/wildcard_imports.rs:196:17 + --> $DIR/wildcard_imports.rs:217:17 | LL | use super::super::*; | ^^^^^^^^^^^^^^^ help: try: `super::super::foofoo` error: usage of wildcard import - --> $DIR/wildcard_imports.rs:205:13 + --> $DIR/wildcard_imports.rs:226:13 | LL | use super::super::super_imports::*; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `super::super::super_imports::foofoo` -error: aborting due to 19 previous errors +error: aborting due to 20 previous errors |