BUG: fix incorrect number of wheels in logs (#2517)

* BUG: fix incorrect number of wheels in logs

* add a test

---------

Co-authored-by: mayeut <[email protected]>

Author: neutrinoceros

cibuildwheel/logger.py

@@ -242,7 +242,7 @@ def print_summary(self, *, options: "Options") -> Generator[None, None, None]:
             github_summary = self._github_step_summary(duration=duration, options=options)
             Path(summary_path).write_text(filter_ansi_codes(github_summary), encoding="utf-8")
 
-        n_wheels = len([info for info in self.summary if not info.filename])
+        n_wheels = len([info for info in self.summary if info.filename])
         s = "s" if n_wheels > 1 else ""
         duration_str = humanize.naturaldelta(duration)
         print()

unit_test/wheel_print_test.py

@@ -15,17 +15,20 @@ def test_printout_wheels(capsys):
     log.colors_enabled = False
 
     with log.print_summary(options=OPTIONS_DEFAULTS):
+        # the number of BuildInfo with & without filename shall be different for this test
         log.summary = [
             BuildInfo(identifier="id1", filename=None, duration=3),
             BuildInfo(identifier="id2", filename=FILE, duration=2),
+            BuildInfo(identifier="id3", filename=FILE, duration=3),
         ]
 
     captured = capsys.readouterr()
     assert captured.err == ""
 
     assert "id1" in captured.out
     assert "id2" in captured.out
-    assert "1 wheel produced in" in captured.out
+    assert "id3" in captured.out
+    assert "2 wheels produced in" in captured.out
     assert "SHA256=" in captured.out