[clang-tools-extra] [clang-doc] Precommit concept tests (PR #144160)

[Paul Kirth via cfe-commits]

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@@ -0,0 +1,29 @@
+// RUN: rm -rf %t && mkdir -p %t
+// RUN: clang-doc --extra-arg -std=c++20 --output=%t --format=json --executor=standalone %s
+// RUN: FileCheck %s < %t/GlobalNamespace/MyClass.json
+
+template<typename T>
+concept Addable = requires(T a, T b) {
+  { a + b };
+};
+
+template<typename T>
+requires Addable<T>
+struct MyClass {
+};
+
+// CHECK:       "Name": "MyClass",
+// CHECK-NEXT:  "Namespace": [
+// CHECK-NEXT:    "GlobalNamespace"
+// CHECK-NEXT:  ],
+// CHECK-NEXT:  "Path": "GlobalNamespace",
+// CHECK-NEXT:  "TagType": "struct",
+// CHECK-NEXT:  "Template": {
+// CHECK-NOT:     "Constraints": [
+// CHECK-NOT:       "Addable<T>"
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ilovepi wrote:

Thanks for pointing this out. As discussed offline, let’s ask clang maintainers on discord or discourse about how to handle this. For this patch things are fine though since it’s just documenting the current behavior. 

https://github.com/llvm/llvm-project/pull/144160