test(pattern): add tests for combinations of pattern features

Reference issue #67311

Tests combinations of the following pattern features:
- bindings_after_at
- or_patterns
- slice_patterns
- box_patterns

2 files changed, 79 insertions, 0 deletions

diff --git a/src/test/ui/or-patterns/box-patterns.rs b/src/test/ui/or-patterns/box-patterns.rs
new file mode 100644
index 00000000000..aafd4799383
--- /dev/null
+++ b/src/test/ui/or-patterns/box-patterns.rs
@@ -0,0 +1,37 @@
+// Test or-patterns with box-patterns
+
+// run-pass
+
+#![feature(or_patterns)]
+#![feature(box_patterns)]
+
+#[derive(Debug, PartialEq)]
+enum MatchArm {
+    Arm(usize),
+    Wild,
+}
+
+#[derive(Debug)]
+enum Test {
+    Foo,
+    Bar,
+    Baz,
+    Qux,
+}
+
+fn test(x: Option<Box<Test>>) -> MatchArm {
+    match x {
+        Some(box Test::Foo | box Test::Bar) => MatchArm::Arm(0),
+        Some(box Test::Baz) => MatchArm::Arm(1),
+        Some(_) => MatchArm::Arm(2),
+        _ => MatchArm::Wild,
+    }
+}
+
+fn main() {
+    assert_eq!(test(Some(Box::new(Test::Foo))), MatchArm::Arm(0));
+    assert_eq!(test(Some(Box::new(Test::Bar))), MatchArm::Arm(0));
+    assert_eq!(test(Some(Box::new(Test::Baz))), MatchArm::Arm(1));
+    assert_eq!(test(Some(Box::new(Test::Qux))), MatchArm::Arm(2));
+    assert_eq!(test(None), MatchArm::Wild);
+}
diff --git a/src/test/ui/or-patterns/slice-patterns.rs b/src/test/ui/or-patterns/slice-patterns.rs
new file mode 100644
index 00000000000..2f2e865d985
--- /dev/null
+++ b/src/test/ui/or-patterns/slice-patterns.rs
@@ -0,0 +1,42 @@
+// Test or-patterns with slice-patterns
+
+// run-pass
+
+#![feature(or_patterns)]
+
+#[derive(Debug, PartialEq)]
+enum MatchArm {
+    Arm(usize),
+    Wild,
+}
+
+#[derive(Debug)]
+enum Test {
+    Foo,
+    Bar,
+    Baz,
+    Qux,
+}
+
+fn test(foo: &[Option<Test>]) -> MatchArm {
+    match foo {
+        [.., Some(Test::Foo | Test::Qux)] => MatchArm::Arm(0),
+        [Some(Test::Foo), .., Some(Test::Bar | Test::Baz)] => MatchArm::Arm(1),
+        [.., Some(Test::Bar | Test::Baz), _] => MatchArm::Arm(2),
+        _ => MatchArm::Wild,
+    }
+}
+
+fn main() {
+    let foo = vec![
+        Some(Test::Foo),
+        Some(Test::Bar),
+        Some(Test::Baz),
+        Some(Test::Qux),
+    ];
+
+    assert_eq!(test(&foo), MatchArm::Arm(0));
+    assert_eq!(test(&foo[..3]), MatchArm::Arm(1));
+    assert_eq!(test(&foo[1..3]), MatchArm::Arm(2));
+    assert_eq!(test(&foo[4..]), MatchArm::Wild);
+}