diff --git a/python/grass/gunittest/testsuite/test_assertions.py b/python/grass/gunittest/testsuite/test_assertions.py
index 64bc790b3dd..10fbf2f8c6f 100644
--- a/python/grass/gunittest/testsuite/test_assertions.py
+++ b/python/grass/gunittest/testsuite/test_assertions.py
@@ -18,7 +18,7 @@ class TestTextAssertions(TestCase):
     # pylint: disable=R0904
 
     std_newline = "aaa\nbbb\n"
-    platfrom_newline = "aaa{nl}bbb{nl}".format(nl=os.linesep)
+    platform_newline = "aaa{nl}bbb{nl}".format(nl=os.linesep)
 
     def test_assertLooksLike(self):
         self.assertLooksLike("Generated map is <elevation>", "Generated map is <...>")
@@ -63,7 +63,7 @@ def do_all_combidnations(self, first, second, function):
     def test_assertMultiLineEqual(self):
         r"""Test different combinations of ``\n`` and os.linesep"""
         self.do_all_combidnations(
-            self.std_newline, self.platfrom_newline, function=self.assertMultiLineEqual
+            self.std_newline, self.platform_newline, function=self.assertMultiLineEqual
         )
 
     def test_assertMultiLineEqual_raises(self):
@@ -78,7 +78,7 @@ def test_assertMultiLineEqual_raises(self):
     def test_assertEqual(self):
         """Test for of newlines for strings (uses overwritten assertMultiLineEqual())"""
         self.do_all_combidnations(
-            self.std_newline, self.platfrom_newline, function=self.assertEqual
+            self.std_newline, self.platform_newline, function=self.assertEqual
         )
 
     def test_assertEqual_raises(self):
@@ -351,18 +351,24 @@ def setUpClass(cls):
         open(cls.emtpy_file, "w").close()
         cls.file_with_md5 = cls.__name__ + "_this_is_a_file_with_known_md5"
         file_content = "Content of the file with known MD5.\n"
-        Path(cls.file_with_md5).write_text(file_content)
+
+        def write_exact(filename, content):
+            # newline="" keeps \n as-is instead of translating it to \r\n on
+            # Windows, so the binary MD5 matches the value below.
+            Path(filename).write_text(content, newline="")
+
+        write_exact(cls.file_with_md5, file_content)
         # MD5 sum created using:
         # echo 'Content of the file with known MD5.' > some_file.txt
         # md5sum some_file.txt
         cls.file_md5 = "807bba4ffac4bb351bc3f27853009949"
 
         cls.file_with_same_content = cls.__name__ + "_file_with_same_content"
-        Path(cls.file_with_same_content).write_text(file_content)
+        write_exact(cls.file_with_same_content, file_content)
 
         cls.file_with_different_content = cls.__name__ + "_file_with_different_content"
-        Path(cls.file_with_different_content).write_text(
-            file_content + " Something else here."
+        write_exact(
+            cls.file_with_different_content, file_content + " Something else here."
         )
 
     @classmethod
@@ -386,7 +392,6 @@ def test_assertFileExists_empty_file(self):
             self.failureException, self.assertFileExists, filename=self.emtpy_file
         )
 
-    @xfail_windows
     def test_assertFileMd5(self):
         self.assertFileMd5(filename=self.file_with_md5, md5=self.file_md5)
         self.assertRaises(
diff --git a/python/grass/gunittest/testsuite/test_checkers.py b/python/grass/gunittest/testsuite/test_checkers.py
index c1a692fbc6d..a657756cef0 100644
--- a/python/grass/gunittest/testsuite/test_checkers.py
+++ b/python/grass/gunittest/testsuite/test_checkers.py
@@ -22,7 +22,6 @@
     file_md5,
     text_file_md5,
 )
-from grass.gunittest.utils import xfail_windows
 
 
 class TestValuesEqual(TestCase):
@@ -369,8 +368,8 @@ def setUpClass(cls):
         with open(cls.correct_file_name_platform_nl, "w") as f:
             # \n should be converted to platform newline
             f.writelines(line + "\n" for line in CORRECT_LINES)
-        with open(cls.correct_file_name_unix_nl, "w") as f:
-            # binary mode will write pure \n
+        with open(cls.correct_file_name_unix_nl, "w", newline="") as f:
+            # newline="" writes pure \n on every platform
             f.writelines(line + "\n" for line in CORRECT_LINES)
         with open(cls.wrong_file_name, "w") as f:
             # \n should be converted to platform newline
@@ -382,7 +381,6 @@ def tearDownClass(cls):
         try_remove(cls.correct_file_name_unix_nl)
         try_remove(cls.wrong_file_name)
 
-    @xfail_windows
     def test_text_file_binary(self):
         r"""File with ``\n`` (LF) newlines as binary (MD5 has ``\n``)."""
         self.assertEqual(
@@ -391,7 +389,7 @@ def test_text_file_binary(self):
             msg="MD5 sums different",
         )
 
-    def test_text_file_platfrom(self):
+    def test_text_file_platform(self):
         r"""Text file with platform dependent newlines"""
         self.assertEqual(
             text_file_md5(self.correct_file_name_platform_nl),