Adjust camelcase so tests pass

stringcase.py

@@ -15,19 +15,17 @@ def camelcase(string):
         string: Camel case string.
 
     """
-
-    if string == "":
-        return string
 
-    string = string.replace("_","-")
-    lst = string.split("-")
-    for i in range(len(lst)):
-        if i == 0:
-            continue
-        else:
-            lst[i] = lst[i].capitalize()
-
-    return "".join(lst)
+    snake = snakecase(string)
+    if not snake:
+        return snake
+
+    words = [word for word in snake.split("_") if word]
+    if not words:
+        return ''
+
+    head, *tail = words
+    return head + ''.join(word.capitalize() for word in tail)
 
 def capitalcase(string):
     """Convert string into capital case.