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-rw-r--r--src/test/run-make/coverage/yield.rs37
1 files changed, 37 insertions, 0 deletions
diff --git a/src/test/run-make/coverage/yield.rs b/src/test/run-make/coverage/yield.rs
new file mode 100644
index 000000000..ff7616656
--- /dev/null
+++ b/src/test/run-make/coverage/yield.rs
@@ -0,0 +1,37 @@
+#![feature(generators, generator_trait)]
+#![allow(unused_assignments)]
+
+use std::ops::{Generator, GeneratorState};
+use std::pin::Pin;
+
+fn main() {
+ let mut generator = || {
+ yield 1;
+ return "foo"
+ };
+
+ match Pin::new(&mut generator).resume(()) {
+ GeneratorState::Yielded(1) => {}
+ _ => panic!("unexpected value from resume"),
+ }
+ match Pin::new(&mut generator).resume(()) {
+ GeneratorState::Complete("foo") => {}
+ _ => panic!("unexpected value from resume"),
+ }
+
+ let mut generator = || {
+ yield 1;
+ yield 2;
+ yield 3;
+ return "foo"
+ };
+
+ match Pin::new(&mut generator).resume(()) {
+ GeneratorState::Yielded(1) => {}
+ _ => panic!("unexpected value from resume"),
+ }
+ match Pin::new(&mut generator).resume(()) {
+ GeneratorState::Yielded(2) => {}
+ _ => panic!("unexpected value from resume"),
+ }
+}