test/clang-tidy/select-checks.cpp

// RUN: grep -Ev "// *[A-Z-]+:" %s > %t.cpp
// RUN: clang-tidy %t.cpp -fix -checks='-*,llvm-*' --
// RUN: FileCheck -input-file=%t.cpp %s
// RUN: clang-tidy %s -checks='-*,an-unknown-check' -- 2>&1 | FileCheck -check-prefix=CHECK2 %s

// CHECK2: Error: no checks enabled.

namespace i {
}
// CHECK: } // namespace i

class A { A(int i); }; // Not fixing this, because the check is in google-.
// CHECK: class A { A(int i); };