fixup! Add back tests that were deleted

Signed-off-by: Ludvig Liljenberg <[email protected]>

Author: ludfjig

Justfile

@@ -83,7 +83,7 @@ test-unit target=default-target features="":
 test-isolated target=default-target features="":
     cargo test {{ if features =="" {''} else if features=="no-default-features" {"--no-default-features" } else {"--no-default-features -F " + features } }} --profile={{ if target == "debug" { "dev" } else { target } }} -p hyperlight-host --lib -- sandbox::uninitialized::tests::test_trace_trace --exact --ignored
     cargo test {{ if features =="" {''} else if features=="no-default-features" {"--no-default-features" } else {"--no-default-features -F " + features } }} --profile={{ if target == "debug" { "dev" } else { target } }} -p hyperlight-host --lib -- sandbox::uninitialized::tests::test_log_trace --exact --ignored
-    cargo test {{ if features =="" {''} else if features=="no-default-features" {"--no-default-features" } else {"--no-default-features -F " + features } }} --profile={{ if target == "debug" { "dev" } else { target } }} -p hyperlight-host --lib -- hypervisor::hypervisor_handler::tests::create_1000_sandboxes --exact --ignored
+    cargo test {{ if features =="" {''} else if features=="no-default-features" {"--no-default-features" } else {"--no-default-features -F " + features } }} --profile={{ if target == "debug" { "dev" } else { target } }} -p hyperlight-host --lib -- sandbox::initialized_multi_use::tests::create_1000_sandboxes --exact --ignored
     cargo test {{ if features =="" {''} else if features=="no-default-features" {"--no-default-features" } else {"--no-default-features -F " + features } }} --profile={{ if target == "debug" { "dev" } else { target } }} -p hyperlight-host --lib -- sandbox::outb::tests::test_log_outb_log --exact --ignored
     cargo test {{ if features =="" {''} else if features=="no-default-features" {"--no-default-features" } else {"--no-default-features -F " + features } }} --profile={{ if target == "debug" { "dev" } else { target } }} -p hyperlight-host --lib -- mem::shared_mem::tests::test_drop --exact --ignored
     cargo test {{ if features =="" {''} else if features=="no-default-features" {"--no-default-features" } else {"--no-default-features -F " + features } }} --profile={{ if target == "debug" { "dev" } else { target } }} -p hyperlight-host --test integration_test -- log_message --exact --ignored

src/hyperlight_host/src/sandbox/initialized_multi_use.rs

@@ -295,6 +295,9 @@ where
 
 #[cfg(test)]
 mod tests {
+    use std::sync::{Arc, Barrier};
+    use std::thread;
+
     use hyperlight_common::flatbuffer_wrappers::function_types::{
         ParameterValue, ReturnType, ReturnValue,
     };
@@ -487,4 +490,50 @@ mod tests {
             ),
         }
     }
+
+    #[test]
+    #[ignore] // this test runs by itself because it uses a lot of system resources
+    fn create_1000_sandboxes() {
+        let barrier = Arc::new(Barrier::new(21));
+
+        let mut handles = vec![];
+
+        for _ in 0..20 {
+            let c = barrier.clone();
+
+            let handle = thread::spawn(move || {
+                c.wait();
+
+                for _ in 0..50 {
+                    let usbox = UninitializedSandbox::new(
+                        GuestBinary::FilePath(
+                            simple_guest_as_string().expect("Guest Binary Missing"),
+                        ),
+                        None,
+                    )
+                    .unwrap();
+
+                    let mut multi_use_sandbox: MultiUseSandbox =
+                        usbox.evolve(Noop::default()).unwrap();
+
+                    let res = multi_use_sandbox.call_guest_function_by_name(
+                        "GetStatic",
+                        ReturnType::Int,
+                        None,
+                    );
+
+                    assert!(res.is_ok());
+                    assert_eq!(res.unwrap(), ReturnValue::Int(0));
+                }
+            });
+
+            handles.push(handle);
+        }
+
+        barrier.wait();
+
+        for handle in handles {
+            handle.join().unwrap();
+        }
+    }
 }