tests: Cleanup some pylint errors and share common fixture

- Cleanup some of the pylint erros in the tests
- Reorganize some of the tests functions and fixtures
- Move the one common fixture to conftest.py for sharing

tests/test_script_main.py

@@ -1,41 +1,16 @@
 # encoding: utf-8
-import os
-import sys
-import pytest
-from tempfile import NamedTemporaryFile
 from os import path as op
+import pytest
 
 from send2trash.__main__ import main as trash_main
 
-# Only import HOMETRASH on supported platforms
-if sys.platform != "win32":
-    from send2trash.plat_other import HOMETRASH
+
+def test_trash(test_file):
+    trash_main(["-v", test_file])
+    assert op.exists(test_file) is False
 
 
-@pytest.fixture
-def file():
-    file = NamedTemporaryFile(dir=op.expanduser("~"), prefix="send2trash_test", delete=False)
-    file.close()
-    # Verify file was actually created
-    assert op.exists(file.name) is True
-    yield file.name
-    # Cleanup trash files on supported platforms
-    if sys.platform != "win32":
-        name = op.basename(file.name)
-        # Remove trash files if they exist
-        if op.exists(op.join(HOMETRASH, "files", name)):
-            os.remove(op.join(HOMETRASH, "files", name))
-            os.remove(op.join(HOMETRASH, "info", name + ".trashinfo"))
-    if op.exists(file.name):
-        os.remove(file.name)
-
-
-def test_trash(file):
-    trash_main(["-v", file])
-    assert op.exists(file) is False
-
-
-def test_no_args(file):
+def test_no_args(test_file):
     pytest.raises(SystemExit, trash_main, [])
     pytest.raises(SystemExit, trash_main, ["-v"])
-    assert op.exists(file) is True
+    assert op.exists(test_file) is True