Github user jkbradley commented on a diff in the pull request:
https://github.com/apache/spark/pull/11945#discussion_r57539512
--- Diff: python/pyspark/ml/tests.py ---
@@ -655,6 +656,20 @@ def test_nested_pipeline_persistence(self):
except OSError:
pass
+ def test_write_property(self):
+ lr = LinearRegression(maxIter=1)
+ path = tempfile.mkdtemp()
+ lr_path = path + "/lr"
+ lr.write.save(lr_path)
--- End diff --
How about just testing:
```
self.assertTrue(isinstance(lr.write, MLWriter))
```
There's no need to actually create a temp directory or save anything in
this test.
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