1 files changed, 35 insertions, 0 deletions
diff --git a/src/test/ui/custom_test_frameworks/auxiliary/dynamic_runner.rs b/src/test/ui/custom_test_frameworks/auxiliary/dynamic_runner.rs
new file mode 100644
index 000000000..a56e0b1f5
--- /dev/null
+++ b/src/test/ui/custom_test_frameworks/auxiliary/dynamic_runner.rs
@@ -0,0 +1,35 @@
+use std::process::exit;
+
+pub trait Testable {
+    // Name of the test
+    fn name(&self) -> String;
+
+    // Tests pass by default
+    fn run(&self) -> bool {
+        true
+    }
+
+    // A test can generate subtests
+    fn subtests(&self) -> Vec<Box<dyn Testable>> {
+        vec![]
+    }
+}
+
+fn run_test(t: &dyn Testable) -> bool {
+    let success = t.subtests().into_iter().all(|sub_t| run_test(&*sub_t)) && t.run();
+    println!("{}...{}", t.name(), if success { "SUCCESS" } else { "FAIL" });
+    success
+}
+
+pub fn runner(tests: &[&dyn Testable]) {
+    let mut failed = false;
+    for t in tests {
+        if !run_test(*t) {
+            failed = true;
+        }
+    }
+
+    if failed {
+        exit(1);
+    }
+}