Update starts_with and ends_with

Support empty prefix and postfix
beda-software · Dec 4, 2023 · f34f07c · f34f07c
1 parent f05c649
commit f34f07c
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/fhirpathpy/engine/invocations/strings.py b/fhirpathpy/engine/invocations/strings.py
@@ -35,13 +35,17 @@ def substring(ctx, coll, start, length=None):
 
 
 def starts_with(ctx, coll, prefix):
+    if util.is_empty(prefix):
+        return []
     string = ensure_string_singleton(coll)
     if not string or not isinstance(prefix, str):
         return False
     return string.startswith(prefix)
 
 
 def ends_with(ctx, coll, postfix):
+    if util.is_empty(postfix):
+        return []
     string = ensure_string_singleton(coll)
     if not string or not isinstance(postfix, str):
         return False