test(sshfs): create files on the fly to work around Windows filesystem

#1397 (comment)

Author: akinomyoga

test/fixtures/sshfs/local_path-dir/dummy.txt

@@ -1,6 +1,8 @@
+import sys
+
 import pytest
 
-from conftest import assert_bash_exec, assert_complete
+from conftest import assert_bash_exec, assert_complete, prepare_fixture_dir
 
 
 @pytest.mark.bashcomp(ignore_env=r"^[+-]_comp_cmd_scp__path_esc=")
@@ -9,8 +11,21 @@ class TestSshfs:
     def test_1(self, completion):
         assert completion
 
-    @pytest.mark.complete("sshfs local_path", cwd="sshfs")
-    def test_local_path_suffix_1(self, completion):
+    @pytest.fixture
+    def tmpdir_backslash(self, request, bash):
+        if sys.platform.startswith("win"):
+            pytest.skip("Filenames not allowed on Windows")
+
+        tmpdir, _, _ = prepare_fixture_dir(
+            request, files=["local_path-file\\"], dirs=["local_path-dir"]
+        )
+        return tmpdir
+
+    def test_local_path_suffix_1(self, bash, tmpdir_backslash):
+        completion = assert_complete(
+            bash, "sshfs local_path", cwd=tmpdir_backslash
+        )
+
         assert completion == "-dir/"
 
     def test_remote_path_ending_with_backslash(self, bash):