Remove unused logic from beets.test and exclude it from coverage

Fun fact: it was the coverage data that revealed that this logic is not
used.

beets/test/_common.py

@@ -58,17 +58,12 @@
 log.propagate = True
 log.setLevel(logging.DEBUG)
 
-# Dummy item creation.
-_item_ident = 0
-
 # OS feature test.
 HAVE_SYMLINK = sys.platform != "win32"
 HAVE_HARDLINK = sys.platform != "win32"
 
 
 def item(lib=None):
-    global _item_ident
-    _item_ident += 1
     i = beets.library.Item(
         title="the title",
         artist="the artist",
@@ -93,7 +88,6 @@ def item(lib=None):
         comments="the comments",
         bpm=8,
         comp=True,
-        path=f"somepath{_item_ident}",
         length=60.0,
         bitrate=128000,
         format="FLAC",

beets/test/helper.py

@@ -713,10 +713,6 @@ def choose_match(self, task):
 
     default_resolution = "REMOVE"
 
-    def add_resolution(self, resolution):
-        assert isinstance(resolution, self.Resolution)
-        self._resolutions.append(resolution)
-
     def resolve_duplicate(self, task, found_duplicates):
         try:
             res = self._resolutions.pop(0)
@@ -769,12 +765,10 @@ def _add_choice_input(self):
             self.io.addinput("T")
         elif choice == importer.action.SKIP:
             self.io.addinput("S")
-        elif isinstance(choice, int):
+        else:
             self.io.addinput("M")
             self.io.addinput(str(choice))
             self._add_choice_input()
-        else:
-            raise Exception("Unknown choice %s" % choice)
 
 
 class TerminalImportMixin(ImportHelper):

setup.cfg

@@ -14,6 +14,7 @@ markers =
 data_file = .reports/coverage/data
 branch = true
 relative_files = true
+omit = beets/test/*
 
 [coverage:report]
 precision = 2