parser composer checks for either-type

pyinfra/parser/parser_composer.py

@@ -46,7 +46,11 @@ class EitherParserComposer:
         self.parser = rcompose(*map(EitherParserWrapper, parsers))
 
     def parse(self, item):
-        return self.parser(item).item
+        result = self.parser(item)
+        if isinstance(result, Right):
+            return result.bind()
+        else:
+            raise ParsingError("All parsers failed.")
 
     def __call__(self, item):
         return self.parse(item)

test/parser/parser_test.py

@@ -1,5 +1,8 @@
 import json
 
+import pytest
+
+from pyinfra.parser.blob_parser import ParsingError
 from pyinfra.parser.parser_composer import EitherParserComposer
 from pyinfra.parser.parsers.identity import IdentityBlobParser
 from pyinfra.parser.parsers.json import JsonBlobParser
@@ -32,3 +35,8 @@ def test_either_parser_composer():
 
     a = 1
     assert parser(a) == a
+
+    parser = EitherParserComposer(JsonBlobParser(), StringBlobParser())
+
+    with pytest.raises(ParsingError):
+        parser(1)