================
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM 
Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "lldb/Core/BugReporter.h"
+#include "lldb/Core/PluginManager.h"
+#include "gtest/gtest.h"
+
+using namespace lldb_private;
+
+namespace {
+class AppliesReporter : public BugReporter {
+public:
+  llvm::StringRef GetPluginName() override { return "applies"; }
+  llvm::Error File(const Diagnostics::Report &) override {
+    return llvm::Error::success();
+  }
+  static std::unique_ptr<BugReporter> Create() {
+    return std::make_unique<AppliesReporter>();
+  }
+};
+
+class DeclinesReporter : public BugReporter {
+public:
+  llvm::StringRef GetPluginName() override { return "declines"; }
+  llvm::Error File(const Diagnostics::Report &) override {
+    return llvm::Error::success();
+  }
+  static std::unique_ptr<BugReporter> Create() { return nullptr; }
+};
+} // namespace
+
+TEST(BugReporterPluginTest, PicksFirstThatApplies) {
+  // Registration order is priority: declines registers first but returns null,
+  // so applies wins.
+  PluginManager::RegisterPlugin("declines", "", &DeclinesReporter::Create);
+  PluginManager::RegisterPlugin("applies", "", &AppliesReporter::Create);
+
+  std::unique_ptr<BugReporter> reporter =
+      PluginManager::CreateBugReporterInstance();
+  ASSERT_NE(reporter, nullptr);
+  EXPECT_EQ(reporter->GetPluginName(), "applies");
+
+  PluginManager::UnregisterPlugin(&AppliesReporter::Create);
+  PluginManager::UnregisterPlugin(&DeclinesReporter::Create);
+}
+
+TEST(BugReporterPluginTest, NullWhenAllDecline) {
----------------
medismailben wrote:

Looks like a no-op to me

https://github.com/llvm/llvm-project/pull/206578
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