Testing walking.

src/dawn/assert/assert.hpp

@@ -84,6 +84,17 @@ void assertTrueImplement(
   map.find(key) != map.end(), __VA_ARGS__ \
 )
 
+/**
+ * Asserts that a given map does not have a specific key.
+ * @param map Map to check.
+ * @param key Key to check for.
+ * @param message Message (sprintf format) to send to the logger.
+ * @param args Optional TParam args for the sprintf message to accept.
+ */
+#define assertMapNotHasKey(map, key, ...) assertTrue( \
+  map.find(key) == map.end(), __VA_ARGS__ \
+)
+
 /**
  * Asserts that a given value has a specific flag turned off.
  *