Imported Upstream version 5.18.0.179

Former-commit-id: 67aa10e65b237e1c4537630979ee99ebe1374215

external/llvm/unittests/ExecutionEngine/Orc/LazyEmittingLayerTest.cpp

@@ -0,0 +1,33 @@
+//===- LazyEmittingLayerTest.cpp - Unit tests for the lazy emitting layer -===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ExecutionEngine/Orc/LazyEmittingLayer.h"
+#include "llvm/ExecutionEngine/RuntimeDyld.h"
+#include "gtest/gtest.h"
+
+namespace {
+
+struct MockBaseLayer {
+  typedef int ModuleHandleT;
+  ModuleHandleT addModule(
+                  std::shared_ptr<llvm::Module>,
+                  std::unique_ptr<llvm::RuntimeDyld::MemoryManager> MemMgr,
+                  std::unique_ptr<llvm::JITSymbolResolver> Resolver) {
+    EXPECT_FALSE(MemMgr);
+    return 42;
+  }
+};
+
+TEST(LazyEmittingLayerTest, Empty) {
+  MockBaseLayer M;
+  llvm::orc::LazyEmittingLayer<MockBaseLayer> L(M);
+  cantFail(L.addModule(std::unique_ptr<llvm::Module>(), nullptr));
+}
+
+}