fix: rerurn formatter

Author: aaltat

src/assertionengine/formatter.py

@@ -0,0 +1,40 @@
+import re
+from abc import ABC, abstractmethod
+
+
+def _strip(value: str) -> str:
+    return value.strip()
+
+
+def _normalize_spaces(value: str) -> str:
+    return re.sub(r"\s+", " ", value)
+
+
+def _apply_to_expected(value: str) -> str:
+    return value
+
+
+def _case_insensitive(value: str) -> str:
+    return value.lower()
+
+
+FormatRules = {
+    "normalize spaces": _normalize_spaces,
+    "strip": _strip,
+    "apply to expected": _apply_to_expected,
+    "case insensitive": _case_insensitive,
+}
+
+
+class Formatter(ABC):
+    @abstractmethod
+    def get_formatter(self, keyword): ...
+
+    @abstractmethod
+    def set_formatter(self, keyword, formatter): ...
+
+    def normalize_keyword(self, name: str):
+        return name.lower().replace(" ", "_")
+
+    def formatters_to_method(self, kw_formatter: list) -> list:
+        return [FormatRules[formatter.lower()] for formatter in kw_formatter]