[libcxx] [test] Add LIBCPP_ASSERT_NOEXCEPT/LIBCPP_ASSERT_NOT_NOEXCEPT, remove an unused variable.

test/support/test_macros.h
For convenience/greppability, add macros for libcxx-specific static_asserts about noexceptness.

(Moving the definitions of ASSERT_NOEXCEPT/ASSERT_NOT_NOEXCEPT isn't technically necessary
because they're macros, but I think it's better style to define stuff before using it.)

test/std/utilities/tuple/tuple.tuple/tuple.apply/apply.pass.cpp
There was a completely unused `TrackedCallable obj;`.

apply() isn't depicted with conditional noexcept in C++17.

test/std/utilities/tuple/tuple.tuple/tuple.apply/make_from_tuple.pass.cpp
Now that we have LIBCPP_ASSERT_NOEXCEPT, use it.

Fixes D27622.

llvm-svn: 289264

1 files changed, 10 insertions, 6 deletions

diff --git a/libcxx/test/support/test_macros.h b/libcxx/test/support/test_macros.h
index 4751803e8b6..32d49be8bff 100644
--- a/libcxx/test/support/test_macros.h
+++ b/libcxx/test/support/test_macros.h
@@ -128,23 +128,27 @@
 #define TEST_NORETURN [[noreturn]]
 #endif
 
+#define ASSERT_NOEXCEPT(...) \
+    static_assert(noexcept(__VA_ARGS__), "Operation must be noexcept")
+
+#define ASSERT_NOT_NOEXCEPT(...) \
+    static_assert(!noexcept(__VA_ARGS__), "Operation must NOT be noexcept")
+
 /* Macros for testing libc++ specific behavior and extensions */
 #if defined(_LIBCPP_VERSION)
 #define LIBCPP_ASSERT(...) assert(__VA_ARGS__)
 #define LIBCPP_STATIC_ASSERT(...) static_assert(__VA_ARGS__)
+#define LIBCPP_ASSERT_NOEXCEPT(...) ASSERT_NOEXCEPT(__VA_ARGS__)
+#define LIBCPP_ASSERT_NOT_NOEXCEPT(...) ASSERT_NOT_NOEXCEPT(__VA_ARGS__)
 #define LIBCPP_ONLY(...) __VA_ARGS__
 #else
 #define LIBCPP_ASSERT(...) ((void)0)
 #define LIBCPP_STATIC_ASSERT(...) ((void)0)
+#define LIBCPP_ASSERT_NOEXCEPT(...) ((void)0)
+#define LIBCPP_ASSERT_NOT_NOEXCEPT(...) ((void)0)
 #define LIBCPP_ONLY(...) ((void)0)
 #endif
 
-#define ASSERT_NOEXCEPT(...) \
-    static_assert(noexcept(__VA_ARGS__), "Operation must be noexcept")
-
-#define ASSERT_NOT_NOEXCEPT(...) \
-    static_assert(!noexcept(__VA_ARGS__), "Operation must NOT be noexcept")
-
 namespace test_macros_detail {
 template <class T, class U>
 struct is_same { enum { value = 0};} ;