[libcxx] [test] Include <cassert> for assert().

This fixes compiler errors with MSVC's STL.

llvm-svn: 346911
diff --git a/libcxx/test/std/containers/associative/map/map.modifiers/merge.pass.cpp b/libcxx/test/std/containers/associative/map/map.modifiers/merge.pass.cpp
index 4fef242..bb75e1d 100644
--- a/libcxx/test/std/containers/associative/map/map.modifiers/merge.pass.cpp
+++ b/libcxx/test/std/containers/associative/map/map.modifiers/merge.pass.cpp
@@ -23,6 +23,7 @@
 //   void merge(multimap<key_type, value_type, C2, allocator_type>&& source);
 
 #include <map>
+#include <cassert>
 #include "test_macros.h"
 #include "Counter.h"
 
diff --git a/libcxx/test/std/containers/associative/multimap/multimap.modifiers/merge.pass.cpp b/libcxx/test/std/containers/associative/multimap/multimap.modifiers/merge.pass.cpp
index 71f3c0b..f0e38c2 100644
--- a/libcxx/test/std/containers/associative/multimap/multimap.modifiers/merge.pass.cpp
+++ b/libcxx/test/std/containers/associative/multimap/multimap.modifiers/merge.pass.cpp
@@ -23,6 +23,7 @@
 //   void merge(multimap<key_type, value_type, C2, allocator_type>&& source);
 
 #include <map>
+#include <cassert>
 #include "test_macros.h"
 #include "Counter.h"
 
diff --git a/libcxx/test/std/containers/associative/multiset/merge.pass.cpp b/libcxx/test/std/containers/associative/multiset/merge.pass.cpp
index 516e27d..8ab9928 100644
--- a/libcxx/test/std/containers/associative/multiset/merge.pass.cpp
+++ b/libcxx/test/std/containers/associative/multiset/merge.pass.cpp
@@ -23,6 +23,7 @@
 //   void merge(multiset<Key, C2, Allocator>&& source);
 
 #include <set>
+#include <cassert>
 #include "test_macros.h"
 #include "Counter.h"
 
diff --git a/libcxx/test/std/containers/associative/set/merge.pass.cpp b/libcxx/test/std/containers/associative/set/merge.pass.cpp
index 0896596..bbae22c 100644
--- a/libcxx/test/std/containers/associative/set/merge.pass.cpp
+++ b/libcxx/test/std/containers/associative/set/merge.pass.cpp
@@ -23,6 +23,7 @@
 //   void merge(multiset<key_type, C2, allocator_type>&& source);
 
 #include <set>
+#include <cassert>
 #include "test_macros.h"
 #include "Counter.h"
 
diff --git a/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/merge.pass.cpp b/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/merge.pass.cpp
index d525b1a..16fc85f 100644
--- a/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/merge.pass.cpp
+++ b/libcxx/test/std/containers/unord/unord.map/unord.map.modifiers/merge.pass.cpp
@@ -23,6 +23,7 @@
 //   void merge(unordered_multimap<key_type, value_type, H2, P2, allocator_type>&& source);
 
 #include <unordered_map>
+#include <cassert>
 #include "test_macros.h"
 #include "Counter.h"
 
diff --git a/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/merge.pass.cpp b/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/merge.pass.cpp
index d018620..5c75d77 100644
--- a/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/merge.pass.cpp
+++ b/libcxx/test/std/containers/unord/unord.multimap/unord.multimap.modifiers/merge.pass.cpp
@@ -23,6 +23,7 @@
 //   void merge(unordered_multimap<key_type, value_type, H2, P2, allocator_type>&& source);
 
 #include <unordered_map>
+#include <cassert>
 #include "test_macros.h"
 #include "Counter.h"
 
diff --git a/libcxx/test/std/containers/unord/unord.multiset/merge.pass.cpp b/libcxx/test/std/containers/unord/unord.multiset/merge.pass.cpp
index 0bf8d35..abf8aa5 100644
--- a/libcxx/test/std/containers/unord/unord.multiset/merge.pass.cpp
+++ b/libcxx/test/std/containers/unord/unord.multiset/merge.pass.cpp
@@ -23,6 +23,7 @@
 //   void merge(unordered_multiset<key_type, H2, P2, allocator_type>&& source);
 
 #include <unordered_set>
+#include <cassert>
 #include "test_macros.h"
 #include "Counter.h"
 
diff --git a/libcxx/test/std/containers/unord/unord.set/merge.pass.cpp b/libcxx/test/std/containers/unord/unord.set/merge.pass.cpp
index ebf03cd..973d2d9 100644
--- a/libcxx/test/std/containers/unord/unord.set/merge.pass.cpp
+++ b/libcxx/test/std/containers/unord/unord.set/merge.pass.cpp
@@ -23,6 +23,7 @@
 //   void merge(unordered_multiset<key_type, H2, P2, allocator_type>&& source);
 
 #include <unordered_set>
+#include <cassert>
 #include "test_macros.h"
 #include "Counter.h"