Move tests to ui, split them and add some

6 files changed, 238 insertions, 0 deletions

diff --git a/src/test/ui/or-patterns/exhaustiveness-non-exhaustive.rs b/src/test/ui/or-patterns/exhaustiveness-non-exhaustive.rs
new file mode 100644
index 00000000000..d7c191bb5a2
--- /dev/null
+++ b/src/test/ui/or-patterns/exhaustiveness-non-exhaustive.rs
@@ -0,0 +1,26 @@
+#![feature(or_patterns)]
+#![feature(slice_patterns)]
+#![allow(incomplete_features)]
+#![deny(unreachable_patterns)]
+
+// We wrap patterns in a tuple because top-level or-patterns are special-cased for now.
+fn main() {
+    // Get the fatal error out of the way
+    match (0u8,) {
+        (0 | _,) => {}
+        //~^ ERROR or-patterns are not fully implemented yet
+    }
+
+    match (0u8, 0u8) {
+        //~^ ERROR non-exhaustive patterns: `(2u8..=std::u8::MAX, _)`
+        (0 | 1, 2 | 3) => {}
+    }
+    match ((0u8,),) {
+        //~^ ERROR non-exhaustive patterns: `((4u8..=std::u8::MAX))`
+        ((0 | 1,) | (2 | 3,),) => {},
+    }
+    match (Some(0u8),) {
+        //~^ ERROR non-exhaustive patterns: `(Some(2u8..=std::u8::MAX))`
+        (None | Some(0 | 1),) => {}
+    }
+}
diff --git a/src/test/ui/or-patterns/exhaustiveness-non-exhaustive.stderr b/src/test/ui/or-patterns/exhaustiveness-non-exhaustive.stderr
new file mode 100644
index 00000000000..e6aa157d278
--- /dev/null
+++ b/src/test/ui/or-patterns/exhaustiveness-non-exhaustive.stderr
@@ -0,0 +1,33 @@
+error[E0004]: non-exhaustive patterns: `(2u8..=std::u8::MAX, _)` not covered
+  --> $DIR/exhaustiveness-non-exhaustive.rs:14:11
+   |
+LL |     match (0u8, 0u8) {
+   |           ^^^^^^^^^^ pattern `(2u8..=std::u8::MAX, _)` not covered
+   |
+   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+
+error[E0004]: non-exhaustive patterns: `((4u8..=std::u8::MAX))` not covered
+  --> $DIR/exhaustiveness-non-exhaustive.rs:18:11
+   |
+LL |     match ((0u8,),) {
+   |           ^^^^^^^^^ pattern `((4u8..=std::u8::MAX))` not covered
+   |
+   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+
+error[E0004]: non-exhaustive patterns: `(Some(2u8..=std::u8::MAX))` not covered
+  --> $DIR/exhaustiveness-non-exhaustive.rs:22:11
+   |
+LL |     match (Some(0u8),) {
+   |           ^^^^^^^^^^^^ pattern `(Some(2u8..=std::u8::MAX))` not covered
+   |
+   = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
+
+error: or-patterns are not fully implemented yet
+  --> $DIR/exhaustiveness-non-exhaustive.rs:10:10
+   |
+LL |         (0 | _,) => {}
+   |          ^^^^^
+
+error: aborting due to 4 previous errors
+
+For more information about this error, try `rustc --explain E0004`.
diff --git a/src/test/ui/or-patterns/exhaustiveness-pass.rs b/src/test/ui/or-patterns/exhaustiveness-pass.rs
new file mode 100644
index 00000000000..a29cc7253ad
--- /dev/null
+++ b/src/test/ui/or-patterns/exhaustiveness-pass.rs
@@ -0,0 +1,40 @@
+#![feature(or_patterns)]
+#![feature(slice_patterns)]
+#![allow(incomplete_features)]
+#![deny(unreachable_patterns)]
+
+// We wrap patterns in a tuple because top-level or-patterns are special-cased for now.
+fn main() {
+    // Get the fatal error out of the way
+    match (0u8,) {
+        (0 | _,) => {}
+        //~^ ERROR or-patterns are not fully implemented yet
+    }
+
+    match (0u8,) {
+        (1 | 2,) => {}
+        _ => {}
+    }
+
+    match (0u8,) {
+        (1 | 1,) => {} // redundancy not detected for now
+        _ => {}
+    }
+    match (0u8, 0u8) {
+        (1 | 2, 3 | 4) => {}
+        (1, 2) => {}
+        (2, 1) => {}
+        _ => {}
+    }
+    match (Some(0u8),) {
+        (None | Some(0 | 1),) => {}
+        (Some(2..=255),) => {}
+    }
+    match ((0u8,),) {
+        ((0 | 1,) | (2 | 3,),) => {},
+        ((_,),) => {},
+    }
+    match (&[0u8][..],) {
+        ([] | [0 | 1..=255] | [_, ..],) => {},
+    }
+}
diff --git a/src/test/ui/or-patterns/exhaustiveness-pass.stderr b/src/test/ui/or-patterns/exhaustiveness-pass.stderr
new file mode 100644
index 00000000000..1f4278c4b80
--- /dev/null
+++ b/src/test/ui/or-patterns/exhaustiveness-pass.stderr
@@ -0,0 +1,8 @@
+error: or-patterns are not fully implemented yet
+  --> $DIR/exhaustiveness-pass.rs:10:10
+   |
+LL |         (0 | _,) => {}
+   |          ^^^^^
+
+error: aborting due to previous error
+
diff --git a/src/test/ui/or-patterns/exhaustiveness-unreachable-pattern.rs b/src/test/ui/or-patterns/exhaustiveness-unreachable-pattern.rs
new file mode 100644
index 00000000000..2cd8ca2dbac
--- /dev/null
+++ b/src/test/ui/or-patterns/exhaustiveness-unreachable-pattern.rs
@@ -0,0 +1,51 @@
+#![feature(or_patterns)]
+#![feature(slice_patterns)]
+#![allow(incomplete_features)]
+#![deny(unreachable_patterns)]
+
+// We wrap patterns in a tuple because top-level or-patterns are special-cased for now.
+fn main() {
+    // Get the fatal error out of the way
+    match (0u8,) {
+        (0 | _,) => {}
+        //~^ ERROR or-patterns are not fully implemented yet
+    }
+
+    match (0u8,) {
+        (1 | 2,) => {}
+        (1,) => {} //~ ERROR unreachable pattern
+        _ => {}
+    }
+    match (0u8,) {
+        (1 | 2,) => {}
+        (2,) => {} //~ ERROR unreachable pattern
+        _ => {}
+    }
+    match (0u8,) {
+        (1,) => {}
+        (2,) => {}
+        (1 | 2,) => {} //~ ERROR unreachable pattern
+        _ => {}
+    }
+    match (0u8, 0u8) {
+        (1 | 2, 3 | 4) => {}
+        (1, 3) => {} //~ ERROR unreachable pattern
+        (1, 4) => {} //~ ERROR unreachable pattern
+        (2, 4) => {} //~ ERROR unreachable pattern
+        (2 | 1, 4) => {} //~ ERROR unreachable pattern
+        (1, 5 | 6) => {}
+        (1, 4 | 5) => {} //~ ERROR unreachable pattern
+        _ => {}
+    }
+    match (Some(0u8),) {
+        (None | Some(1 | 2),) => {}
+        (Some(1),) => {} //~ ERROR unreachable pattern
+        (None,) => {} //~ ERROR unreachable pattern
+        _ => {}
+    }
+    match ((0u8,),) {
+        ((1 | 2,) | (3 | 4,),) => {},
+        ((1..=4,),) => {}, //~ ERROR unreachable pattern
+        _ => {},
+    }
+}
diff --git a/src/test/ui/or-patterns/exhaustiveness-unreachable-pattern.stderr b/src/test/ui/or-patterns/exhaustiveness-unreachable-pattern.stderr
new file mode 100644
index 00000000000..a4d55d805c3
--- /dev/null
+++ b/src/test/ui/or-patterns/exhaustiveness-unreachable-pattern.stderr
@@ -0,0 +1,80 @@
+error: unreachable pattern
+  --> $DIR/exhaustiveness-unreachable-pattern.rs:16:9
+   |
+LL |         (1,) => {}
+   |         ^^^^
+   |
+note: lint level defined here
+  --> $DIR/exhaustiveness-unreachable-pattern.rs:4:9
+   |
+LL | #![deny(unreachable_patterns)]
+   |         ^^^^^^^^^^^^^^^^^^^^
+
+error: unreachable pattern
+  --> $DIR/exhaustiveness-unreachable-pattern.rs:21:9
+   |
+LL |         (2,) => {}
+   |         ^^^^
+
+error: unreachable pattern
+  --> $DIR/exhaustiveness-unreachable-pattern.rs:27:9
+   |
+LL |         (1 | 2,) => {}
+   |         ^^^^^^^^
+
+error: unreachable pattern
+  --> $DIR/exhaustiveness-unreachable-pattern.rs:32:9
+   |
+LL |         (1, 3) => {}
+   |         ^^^^^^
+
+error: unreachable pattern
+  --> $DIR/exhaustiveness-unreachable-pattern.rs:33:9
+   |
+LL |         (1, 4) => {}
+   |         ^^^^^^
+
+error: unreachable pattern
+  --> $DIR/exhaustiveness-unreachable-pattern.rs:34:9
+   |
+LL |         (2, 4) => {}
+   |         ^^^^^^
+
+error: unreachable pattern
+  --> $DIR/exhaustiveness-unreachable-pattern.rs:35:9
+   |
+LL |         (2 | 1, 4) => {}
+   |         ^^^^^^^^^^
+
+error: unreachable pattern
+  --> $DIR/exhaustiveness-unreachable-pattern.rs:37:9
+   |
+LL |         (1, 4 | 5) => {}
+   |         ^^^^^^^^^^
+
+error: unreachable pattern
+  --> $DIR/exhaustiveness-unreachable-pattern.rs:42:9
+   |
+LL |         (Some(1),) => {}
+   |         ^^^^^^^^^^
+
+error: unreachable pattern
+  --> $DIR/exhaustiveness-unreachable-pattern.rs:43:9
+   |
+LL |         (None,) => {}
+   |         ^^^^^^^
+
+error: unreachable pattern
+  --> $DIR/exhaustiveness-unreachable-pattern.rs:48:9
+   |
+LL |         ((1..=4,),) => {},
+   |         ^^^^^^^^^^^
+
+error: or-patterns are not fully implemented yet
+  --> $DIR/exhaustiveness-unreachable-pattern.rs:10:10
+   |
+LL |         (0 | _,) => {}
+   |          ^^^^^
+
+error: aborting due to 12 previous errors
+