Ensure body is tested matching regex pattern type

src/pook/assertion.py

@@ -50,6 +50,9 @@ def matches(x, y, regex_expr=False):
     # Parse regex expression, if needed
     x = strip_regex(x) if regex_expr and isregex_expr(x) else x
 
+    if isinstance(x.pattern, str) and hasattr(y, "decode"):
+        y = y.decode("utf-8", "backslashescape")
+
     # Assert regular expression via unittest matchers
     return test_case().assertRegex(y, x) or True
 

tests/unit/mock_test.py

@@ -2,6 +2,7 @@
 import json
 import itertools
 from textwrap import dedent
+import re
 
 import pook
 from pook.mock import Mock
@@ -213,6 +214,26 @@ def test_body_not_matches(httpbin, mock, mock_body, request_body):
     assert errors[0].startswith("BodyMatcher: ")
 
 
+def test_body_matches_string_regex(httpbin, mock):
+    mock.body(re.compile(r"hello, me!"))
+    req = Request(
+        url=httpbin.url,
+        body="This is a big sentence... hello, me! wow, another part",
+    )
+
+    assert mock.match(req) == (True, [])
+
+
+def test_body_matches_bytes_regex(httpbin, mock):
+    mock.body(re.compile(rb"hello, me!"))
+    req = Request(
+        url=httpbin.url,
+        body="This is a big sentence... hello, me! wow, another part",
+    )
+
+    assert mock.match(req) == (True, [])
+
+
 def test_xml_matches(httpbin, mock):
     xml = dedent(
         """