test__fileobject.py: add more tests

greentest/test__fileobject.py

 import os
-import sys
 import greentest
-from gevent.fileobject import SocketAdapter, FileObjectPosix
+import gevent
+from gevent.fileobject import FileObject, FileObjectThreadPool
 
 
 class Test(greentest.TestCase):
 
+    def _test_del(self, **kwargs):
+        r, w = os.pipe()
+        s = FileObject(w, 'wb')
+        s.write('x')
+        s.flush()
+        del s
+        try:
+            os.close(w)
+        except OSError:
+            pass  # expected, because SocketAdapter already closed it
+        else:
+            raise AssertionError('os.close(%r) must not succeed' % w)
+        self.assertEqual(FileObject(r).read(), 'x')
+
     def test_del(self):
+        self._test_del()
+
+    def test_del_close(self):
+        self._test_del(close=True)
+
+    if FileObject is not FileObjectThreadPool:
+
+        def test_del_noclose(self):
+            r, w = os.pipe()
+            s = FileObject(w, 'wb', close=False)
+            s.write('x')
+            s.flush()
+            del s
+            os.close(w)
+            self.assertEqual(FileObject(r).read(), 'x')
+
+    def test_newlines(self):
+        r, w = os.pipe()
+        lines = ['line1\n', 'line2\r', 'line3\r\n', 'line4\r\nline5', '\nline6']
+        g = gevent.spawn(writer, FileObject(w, 'wb'), lines)
+        try:
+            result = FileObject(r, 'rU').read()
+            self.assertEqual('line1\nline2\nline3\nline4\nline5\nline6', result)
+        finally:
+            g.kill()
+
+
+def writer(fobj, line):
+    for character in line:
+        fobj.write(character)
+        fobj.flush()
+    fobj.close()
+
+
+try:
+    from gevent.fileobject import SocketAdapter
+except ImportError:
+    pass
+else:
+
+    class TestSocketAdapter(greentest.TestCase):
+
+        def _test_del(self, **kwargs):
             r, w = os.pipe()
             s = SocketAdapter(w)
             s.sendall('x')
             del s
-        self.assertEqual(FileObjectPosix(r).read(), 'x')
+            try:
+                os.close(w)
+            except OSError:
+                pass  # expected, because SocketAdapter already closed it
+            else:
+                raise AssertionError('os.close(%r) must not succeed' % w)
+            self.assertEqual(FileObject(r).read(), 'x')
+
+        def test_del(self):
+            self._test_del()
+
+        def test_del_close(self):
+            self._test_del(close=True)
+
+        def test_del_noclose(self):
+            r, w = os.pipe()
+            s = SocketAdapter(w, close=False)
+            s.sendall('x')
+            del s
+            os.close(w)
+            self.assertEqual(FileObject(r).read(), 'x')
 
 
 if __name__ == '__main__':