[clang-tools-extra] [clang-doc] Add regression test for test comments in macros (PR #132510)

[Paul Kirth via cfe-commits]

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@@ -0,0 +1,34 @@
+// Fixes #59819. The underlying problem was fixed in https://reviews.llvm.org/D142560, but this patch adds a proper regression test.
+// RUN: rm -rf %t && mkdir -p %t
+// RUN: clang-doc --format=md --doxygen --output=%t --executor=standalone %s
+// RUN: FileCheck %s < %t/GlobalNamespace/MyClass.md --check-prefix=MD-MYCLASS-LINE
+// RUN: FileCheck %s < %t/GlobalNamespace/MyClass.md --check-prefix=MD-MYCLASS
+// RUN: clang-doc --format=html --doxygen --output=%t --executor=standalone %s
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ilovepi wrote:

```suggestion
// RUN: FileCheck %s < %t/GlobalNamespace/MyClass.md --check-prefix=MD-MYCLASS

// RUN: clang-doc --format=html --doxygen --output=%t --executor=standalone %s
```

https://github.com/llvm/llvm-project/pull/132510