diff --git a/test/libcxx/debug/containers/db_associative_container_tests.pass.cpp b/test/libcxx/debug/containers/db_associative_container_tests.pass.cpp
index c2c2d9221..91cdf85b1 100644
--- a/test/libcxx/debug/containers/db_associative_container_tests.pass.cpp
+++ b/test/libcxx/debug/containers/db_associative_container_tests.pass.cpp
@@ -9,11 +9,14 @@
 
 // UNSUPPORTED: c++98, c++03, c++11, c++14
 // UNSUPPORTED: libcpp-no-exceptions, libcpp-no-if-constexpr
+// MODULES_DEFINES: _LIBCPP_DEBUG=1
+// MODULES_DEFINES: _LIBCPP_DEBUG_USE_EXCEPTIONS
 
 // test container debugging
 
 #define _LIBCPP_DEBUG 1
 #define _LIBCPP_DEBUG_USE_EXCEPTIONS
+
 #include <map>
 #include <set>
 #include <utility>
diff --git a/test/libcxx/debug/containers/db_sequence_container_iterators.pass.cpp b/test/libcxx/debug/containers/db_sequence_container_iterators.pass.cpp
index 46f960c15..6e2fb7bf3 100644
--- a/test/libcxx/debug/containers/db_sequence_container_iterators.pass.cpp
+++ b/test/libcxx/debug/containers/db_sequence_container_iterators.pass.cpp
@@ -9,6 +9,8 @@
 
 // UNSUPPORTED: c++98, c++03, c++11, c++14
 // UNSUPPORTED: libcpp-no-exceptions, libcpp-no-if-constexpr
+// MODULES_DEFINES: _LIBCPP_DEBUG=1
+// MODULES_DEFINES: _LIBCPP_DEBUG_USE_EXCEPTIONS
 
 // test container debugging
 
diff --git a/test/libcxx/debug/containers/db_string.pass.cpp b/test/libcxx/debug/containers/db_string.pass.cpp
index 98229ea62..8d1a622b4 100644
--- a/test/libcxx/debug/containers/db_string.pass.cpp
+++ b/test/libcxx/debug/containers/db_string.pass.cpp
@@ -9,6 +9,8 @@
 
 // UNSUPPORTED: c++98, c++03, c++11, c++14
 // UNSUPPORTED: libcpp-no-exceptions, libcpp-no-if-constexpr
+// MODULES_DEFINES: _LIBCPP_DEBUG=1
+// MODULES_DEFINES: _LIBCPP_DEBUG_USE_EXCEPTIONS
 
 // test container debugging
 
diff --git a/test/libcxx/debug/containers/db_unord_container_tests.pass.cpp b/test/libcxx/debug/containers/db_unord_container_tests.pass.cpp
index 708fc7f8b..5618607fb 100644
--- a/test/libcxx/debug/containers/db_unord_container_tests.pass.cpp
+++ b/test/libcxx/debug/containers/db_unord_container_tests.pass.cpp
@@ -9,6 +9,8 @@
 
 // UNSUPPORTED: c++98, c++03, c++11, c++14
 // UNSUPPORTED: libcpp-no-exceptions, libcpp-no-if-constexpr
+// MODULES_DEFINES: _LIBCPP_DEBUG=1
+// MODULES_DEFINES: _LIBCPP_DEBUG_USE_EXCEPTIONS
 
 // test container debugging
 
diff --git a/test/libcxx/debug/debug_abort.pass.cpp b/test/libcxx/debug/debug_abort.pass.cpp
index cfe632027..b6e7b0bd8 100644
--- a/test/libcxx/debug/debug_abort.pass.cpp
+++ b/test/libcxx/debug/debug_abort.pass.cpp
@@ -7,6 +7,9 @@
 // Source Licenses. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
+
+// MODULES_DEFINES: _LIBCPP_DEBUG=0
+
 // Test that the default debug handler aborts the program.
 
 #define _LIBCPP_DEBUG 0
diff --git a/test/libcxx/debug/debug_throw.pass.cpp b/test/libcxx/debug/debug_throw.pass.cpp
index bc5625c60..716750c78 100644
--- a/test/libcxx/debug/debug_throw.pass.cpp
+++ b/test/libcxx/debug/debug_throw.pass.cpp
@@ -7,7 +7,9 @@
 // Source Licenses. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
+
 // UNSUPPORTED: libcpp-no-exceptions
+// MODULES_DEFINES: _LIBCPP_DEBUG=0
 
 // Test that the default debug handler can be overridden and test the
 // throwing debug handler.
diff --git a/test/libcxx/debug/debug_throw_register.pass.cpp b/test/libcxx/debug/debug_throw_register.pass.cpp
index 21b1d5255..ec4be700e 100644
--- a/test/libcxx/debug/debug_throw_register.pass.cpp
+++ b/test/libcxx/debug/debug_throw_register.pass.cpp
@@ -7,7 +7,10 @@
 // Source Licenses. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
+
 // UNSUPPORTED: libcpp-no-exceptions
+// MODULES_DEFINES: _LIBCPP_DEBUG=1
+// MODULES_DEFINES: _LIBCPP_DEBUG_USE_EXCEPTIONS
 
 // Test that defining _LIBCPP_DEBUG_USE_EXCEPTIONS causes _LIBCPP_ASSERT
 // to throw on failure.
diff --git a/test/libcxx/depr/depr.auto.ptr/auto.ptr/auto_ptr.cxx1z.pass.cpp b/test/libcxx/depr/depr.auto.ptr/auto.ptr/auto_ptr.cxx1z.pass.cpp
index 3764dcb25..41ddb179f 100644
--- a/test/libcxx/depr/depr.auto.ptr/auto.ptr/auto_ptr.cxx1z.pass.cpp
+++ b/test/libcxx/depr/depr.auto.ptr/auto.ptr/auto_ptr.cxx1z.pass.cpp
@@ -16,6 +16,8 @@
 //  However, for backwards compatibility, if _LIBCPP_NO_REMOVE_AUTOPTR
 //  is defined before including <memory>, then auto_ptr will be restored.
 
+// MODULES_DEFINES: _LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR
+
 #define _LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR
 
 #include <memory>