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-rw-r--r--src/test/ui/or-patterns/slice-patterns.rs51
1 files changed, 51 insertions, 0 deletions
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 000000000..ed5eace0b
--- /dev/null
+++ b/src/test/ui/or-patterns/slice-patterns.rs
@@ -0,0 +1,51 @@
+// Test or-patterns with slice-patterns
+
+// run-pass
+
+#[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::Qux | Test::Foo)] => MatchArm::Arm(0),
+ [Some(Test::Foo), .., Some(Test::Baz | Test::Bar)] => 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),
+ ];
+
+ // path 1a
+ assert_eq!(test(&foo), MatchArm::Arm(0));
+ // path 1b
+ assert_eq!(test(&[Some(Test::Bar), Some(Test::Foo)]), MatchArm::Arm(0));
+ // path 2a
+ assert_eq!(test(&foo[..3]), MatchArm::Arm(1));
+ // path 2b
+ assert_eq!(test(&[Some(Test::Foo), Some(Test::Foo), Some(Test::Bar)]), MatchArm::Arm(1));
+ // path 3a
+ assert_eq!(test(&foo[1..3]), MatchArm::Arm(2));
+ // path 3b
+ assert_eq!(test(&[Some(Test::Bar), Some(Test::Baz), Some(Test::Baz), Some(Test::Bar)]),
+ MatchArm::Arm(2));
+ // path 4
+ assert_eq!(test(&foo[4..]), MatchArm::Wild);
+}