Merge branch 'flv0-savefile_open-flush'

README.asciidoc

@@ -152,8 +152,8 @@ Contributors, sorted by the number of commits in descending order:
 * Raphael Pierzina
 * Joel Torstensson
 * Jan Verbeek
-* Tarcisio Fedrizzi
 * Patric Schmitz
+* Tarcisio Fedrizzi
 * Claude
 * Corentin Julé
 * meles5

qutebrowser/utils/qtutils.py

@@ -209,20 +209,19 @@ def savefile_open(filename, binary=False, encoding='utf-8'):
     f = QSaveFile(filename)
     cancelled = False
     try:
-        ok = f.open(QIODevice.WriteOnly)
-        if not ok:
+        open_ok = f.open(QIODevice.WriteOnly)
+        if not open_ok:
             raise QtOSError(f)
         if binary:
             new_f = PyQIODevice(f)
         else:
             new_f = io.TextIOWrapper(PyQIODevice(f), encoding=encoding)
         yield new_f
+        new_f.flush()
     except:
         f.cancelWriting()
         cancelled = True
         raise
-    else:
-        new_f.flush()
     finally:
         commit_ok = f.commit()
         if not commit_ok and not cancelled:

tests/unit/utils/test_qtutils.py

@@ -481,16 +481,27 @@ class TestSavefileOpen:
         assert str(excinfo.value) in errors
         assert tmpdir.listdir() == [filename]
 
+    def test_failing_flush(self, tmpdir):
+        """Test with the file being closed before flushing."""
+        filename = tmpdir / 'foo'
+        with pytest.raises(ValueError) as excinfo:
+            with qtutils.savefile_open(str(filename), binary=True) as f:
+                f.write(b'Hello')
+                f.dev.commit()  # provoke failing flush
+
+        assert str(excinfo.value) == "IO operation on closed device!"
+        assert tmpdir.listdir() == [filename]
+
     def test_failing_commit(self, tmpdir):
         """Test with the file being closed before committing."""
         filename = tmpdir / 'foo'
         with pytest.raises(OSError) as excinfo:
             with qtutils.savefile_open(str(filename), binary=True) as f:
                 f.write(b'Hello')
-                f.dev.commit()  # provoke failing "real" commit
+                f.dev.cancelWriting()  # provoke failing commit
 
         assert str(excinfo.value) == "Commit failed!"
-        assert tmpdir.listdir() == [filename]
+        assert tmpdir.listdir() == []
 
     def test_line_endings(self, tmpdir):
         """Make sure line endings are translated correctly.