1 files changed, 187 insertions, 0 deletions
diff --git a/src/test/ui/rfc-2008-non-exhaustive/omitted-patterns.rs b/src/test/ui/rfc-2008-non-exhaustive/omitted-patterns.rs
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index 000000000..d8f07bb8f
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+++ b/src/test/ui/rfc-2008-non-exhaustive/omitted-patterns.rs
@@ -0,0 +1,187 @@
+// Test that the `non_exhaustive_omitted_patterns` lint is triggered correctly.
+
+#![feature(non_exhaustive_omitted_patterns_lint, unstable_test_feature)]
+
+// aux-build:enums.rs
+extern crate enums;
+// aux-build:unstable.rs
+extern crate unstable;
+// aux-build:structs.rs
+extern crate structs;
+
+use enums::{
+    EmptyNonExhaustiveEnum, NestedNonExhaustive, NonExhaustiveEnum, NonExhaustiveSingleVariant,
+    VariantNonExhaustive,
+};
+use unstable::{UnstableEnum, OnlyUnstableEnum, UnstableStruct, OnlyUnstableStruct};
+use structs::{FunctionalRecord, MixedVisFields, NestedStruct, NormalStruct};
+
+#[non_exhaustive]
+#[derive(Default)]
+pub struct Foo {
+    a: u8,
+    b: usize,
+    c: String,
+}
+
+#[non_exhaustive]
+pub enum Bar {
+    A,
+    B,
+    C,
+}
+
+fn main() {
+    let enumeration = Bar::A;
+
+    // Ok: this is a crate local non_exhaustive enum
+    match enumeration {
+        Bar::A => {}
+        Bar::B => {}
+        #[deny(non_exhaustive_omitted_patterns)]
+        _ => {}
+    }
+
+    let non_enum = NonExhaustiveEnum::Unit;
+
+    // Ok: without the attribute
+    match non_enum {
+        NonExhaustiveEnum::Unit => {}
+        NonExhaustiveEnum::Tuple(_) => {}
+        _ => {}
+    }
+
+    match non_enum {
+        NonExhaustiveEnum::Unit => {}
+        NonExhaustiveEnum::Tuple(_) => {}
+        #[deny(non_exhaustive_omitted_patterns)]
+        _ => {}
+    }
+    //~^^ some variants are not matched explicitly
+
+    match non_enum {
+        NonExhaustiveEnum::Unit | NonExhaustiveEnum::Struct { .. } => {}
+        #[deny(non_exhaustive_omitted_patterns)]
+        _ => {}
+    }
+    //~^^ some variants are not matched explicitly
+
+    let x = 5;
+    match non_enum {
+        NonExhaustiveEnum::Unit if x > 10 => {}
+        NonExhaustiveEnum::Tuple(_) => {}
+        NonExhaustiveEnum::Struct { .. } => {}
+        #[deny(non_exhaustive_omitted_patterns)]
+        _ => {}
+    }
+    //~^^ some variants are not matched explicitly
+
+    // Ok: all covered and not `unreachable-patterns`
+    #[deny(unreachable_patterns)]
+    match non_enum {
+        NonExhaustiveEnum::Unit => {}
+        NonExhaustiveEnum::Tuple(_) => {}
+        NonExhaustiveEnum::Struct { .. } => {}
+        #[deny(non_exhaustive_omitted_patterns)]
+        _ => {}
+    }
+
+    #[deny(non_exhaustive_omitted_patterns)]
+    match NestedNonExhaustive::B {
+        NestedNonExhaustive::A(NonExhaustiveEnum::Unit) => {}
+        NestedNonExhaustive::A(_) => {}
+        NestedNonExhaustive::B => {}
+        _ => {}
+    }
+    //~^^ some variants are not matched explicitly
+    //~^^^^^ some variants are not matched explicitly
+
+    #[warn(non_exhaustive_omitted_patterns)]
+    match VariantNonExhaustive::Baz(1, 2) {
+        VariantNonExhaustive::Baz(_, _) => {}
+        VariantNonExhaustive::Bar { x, .. } => {}
+    }
+    //~^^ some fields are not explicitly listed
+
+    #[warn(non_exhaustive_omitted_patterns)]
+    let FunctionalRecord { first_field, second_field, .. } = FunctionalRecord::default();
+    //~^ some fields are not explicitly listed
+
+    // Ok: this is local
+    #[warn(non_exhaustive_omitted_patterns)]
+    let Foo { a, b, .. } = Foo::default();
+
+    #[warn(non_exhaustive_omitted_patterns)]
+    let NestedStruct { bar: NormalStruct { first_field, .. }, .. } = NestedStruct::default();
+    //~^ some fields are not explicitly listed
+    //~^^ some fields are not explicitly listed
+
+    // Ok: this tests https://github.com/rust-lang/rust/issues/89382
+    #[warn(non_exhaustive_omitted_patterns)]
+    let MixedVisFields { a, b, .. } = MixedVisFields::default();
+
+    // Ok: because this only has 1 variant
+    #[deny(non_exhaustive_omitted_patterns)]
+    match NonExhaustiveSingleVariant::A(true) {
+        NonExhaustiveSingleVariant::A(true) => {}
+        _ => {}
+    }
+
+    #[deny(non_exhaustive_omitted_patterns)]
+    match NonExhaustiveSingleVariant::A(true) {
+        _ => {}
+    }
+    //~^^ some variants are not matched explicitly
+
+    // Ok: we don't lint on `if let` expressions
+    #[deny(non_exhaustive_omitted_patterns)]
+    if let NonExhaustiveEnum::Tuple(_) = non_enum {}
+
+    match UnstableEnum::Stable {
+        UnstableEnum::Stable => {}
+        UnstableEnum::Stable2 => {}
+        #[deny(non_exhaustive_omitted_patterns)]
+        _ => {}
+    }
+    //~^^ some variants are not matched explicitly
+
+    // Ok: the feature is on and all variants are matched
+    #[deny(non_exhaustive_omitted_patterns)]
+    match UnstableEnum::Stable {
+        UnstableEnum::Stable => {}
+        UnstableEnum::Stable2 => {}
+        UnstableEnum::Unstable => {}
+        _ => {}
+    }
+
+    // Ok: the feature is on and both variants are matched
+    #[deny(non_exhaustive_omitted_patterns)]
+    match OnlyUnstableEnum::Unstable {
+        OnlyUnstableEnum::Unstable => {}
+        OnlyUnstableEnum::Unstable2 => {}
+        _ => {}
+    }
+
+    #[deny(non_exhaustive_omitted_patterns)]
+    match OnlyUnstableEnum::Unstable {
+        OnlyUnstableEnum::Unstable => {}
+        _ => {}
+    }
+    //~^^ some variants are not matched explicitly
+
+    #[warn(non_exhaustive_omitted_patterns)]
+    let OnlyUnstableStruct { unstable, .. } = OnlyUnstableStruct::new();
+    //~^ some fields are not explicitly listed
+
+    // OK: both unstable fields are matched with feature on
+    #[warn(non_exhaustive_omitted_patterns)]
+    let OnlyUnstableStruct { unstable, unstable2, .. } = OnlyUnstableStruct::new();
+
+    #[warn(non_exhaustive_omitted_patterns)]
+    let UnstableStruct { stable, stable2, .. } = UnstableStruct::default();
+    //~^ some fields are not explicitly listed
+
+    // OK: both unstable and stable fields are matched with feature on
+    #[warn(non_exhaustive_omitted_patterns)]
+    let UnstableStruct { stable, stable2, unstable, .. } = UnstableStruct::default();
+}