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-rw-r--r--tests/ui/closures/closure_no_cap_coerce_many_run_pass.rs59
1 files changed, 59 insertions, 0 deletions
diff --git a/tests/ui/closures/closure_no_cap_coerce_many_run_pass.rs b/tests/ui/closures/closure_no_cap_coerce_many_run_pass.rs
new file mode 100644
index 000000000..3c5fe8a55
--- /dev/null
+++ b/tests/ui/closures/closure_no_cap_coerce_many_run_pass.rs
@@ -0,0 +1,59 @@
+// run-pass
+// Ensure non-capturing Closure passing CoerceMany work correctly.
+fn foo(_: usize) -> usize {
+ 0
+}
+
+fn bar(_: usize) -> usize {
+ 1
+}
+
+fn add(a: i32, b: i32) -> i32 {
+ a + b
+}
+
+fn main() {
+ // Coerce result check
+
+ type FnPointer = fn(usize) -> usize;
+
+ let c = |x| x;
+ let c_pointer: FnPointer = c;
+ assert_eq!(c_pointer(42), 42);
+
+ let f = match 0 {
+ 0 => foo,
+ 1 => |_| 1,
+ _ => unimplemented!(),
+ };
+ assert_eq!(f(42), 0);
+
+ let f = match 2 {
+ 2 => |_| 2,
+ 0 => foo,
+ _ => unimplemented!(),
+ };
+ assert_eq!(f(42), 2);
+
+ let f = match 1 {
+ 0 => foo,
+ 1 => bar,
+ 2 => |_| 2,
+ _ => unimplemented!(),
+ };
+ assert_eq!(f(42), 1);
+
+ let clo0 = |_: usize| 0;
+ let clo1 = |_| 1;
+ let clo2 = |_| 2;
+ let f = match 0 {
+ 0 => clo0,
+ 1 => clo1,
+ 2 => clo2,
+ _ => unimplemented!(),
+ };
+ assert_eq!(f(42), 0);
+
+ let funcs = [add, |a, b| (a - b) as i32];
+ assert_eq!([funcs[0](5, 5), funcs[1](5, 5)], [10, 0]);
+}