[lldb][test] Combine libstdc++ and libc++ std::shared_ptr tests into generic test (llvm#147141)

This combines the libc++ and libstdc++ test cases. The libstdcpp tests
were a subset of the libc++ test, so this patch moves the libcxx test
into `generic` and removes the libstdcpp test entirely.

Split out from llvm#146740

(cherry picked from commit e14e982)

Author: Michael137

lldb/test/API/functionalities/data-formatter/data-formatter-stl/libstdcpp/smart_ptr/Makefile renamed to lldb/test/API/functionalities/data-formatter/data-formatter-stl/generic/shared_ptr/Makefile

@@ -1,6 +1,3 @@
 CXX_SOURCES := main.cpp
 
-CXXFLAGS := -O0
-USE_LIBSTDCPP := 1
-
 include Makefile.rules

lldb/test/API/functionalities/data-formatter/data-formatter-stl/libcxx/shared_ptr/TestDataFormatterLibcxxSharedPtr.py renamed to lldb/test/API/functionalities/data-formatter/data-formatter-stl/generic/shared_ptr/TestDataFormatterStdSharedPtr.py

@@ -1,5 +1,5 @@
 """
-Test lldb data formatter for libc++ std::shared_ptr.
+Test lldb data formatter for std::shared_ptr.
 """
 
 import lldb
@@ -9,11 +9,8 @@
 
 
 class TestCase(TestBase):
-    @add_test_categories(["libc++"])
-    def test_shared_ptr_variables(self):
+    def do_test(self):
         """Test `frame variable` output for `std::shared_ptr` types."""
-        self.build()
-
         (_, process, _, bkpt) = lldbutil.run_to_source_breakpoint(
             self, "// break here", lldb.SBFileSpec("main.cpp")
         )
@@ -56,24 +53,16 @@ def test_shared_ptr_variables(self):
         self.assertRegex(valobj.summary, r"^10( strong=1)? weak=0$")
         self.assertNotEqual(valobj.child[0].unsigned, 0)
 
-        if self.expectedCompiler(["clang"]) and self.expectedCompilerVersion(
-            [">", "16.0"]
-        ):
-            string_type = "std::string"
-        else:
-            string_type = "std::basic_string<char, std::char_traits<char>, std::allocator<char> > "
-
         valobj = self.expect_var_path(
             "sp_str",
-            type="std::shared_ptr<" + string_type + ">",
             children=[ValueCheck(name="pointer", summary='"hello"')],
         )
         self.assertRegex(valobj.summary, r'^"hello"( strong=1)? weak=0$')
 
         valobj = self.expect_var_path("sp_user", type="std::shared_ptr<User>")
         self.assertRegex(
             valobj.summary,
-            "^std(::__[^:]*)?::shared_ptr<User>::element_type @ 0x0*[1-9a-f][0-9a-f]+( strong=1)? weak=0",
+            "element_type @ 0x0*[1-9a-f][0-9a-f]+( strong=1)? weak=0",
         )
         self.assertNotEqual(valobj.child[0].unsigned, 0)
 
@@ -109,3 +98,13 @@ def test_shared_ptr_variables(self):
         valobj = self.expect_var_path(
             "wie", type="std::weak_ptr<int>", summary="nullptr strong=2 weak=2"
         )
+
+    @add_test_categories(["libc++"])
+    def test_libcxx(self):
+        self.build(dictionary={"USE_LIBCPP": 1})
+        self.do_test()
+
+    @add_test_categories(["libstdcxx"])
+    def test_libstdcxx(self):
+        self.build(dictionary={"USE_LIBSTDCPP": 1})
+        self.do_test()