spark-instrumented-optimizer/python/pyspark/ml/tests/test_stat.py
zero323 31a16fbb40 [SPARK-32714][PYTHON] Initial pyspark-stubs port
### What changes were proposed in this pull request?

This PR proposes migration of [`pyspark-stubs`](https://github.com/zero323/pyspark-stubs) into Spark codebase.

### Why are the changes needed?

### Does this PR introduce _any_ user-facing change?

Yes. This PR adds type annotations directly to Spark source.

This can impact interaction with development tools for users, which haven't used `pyspark-stubs`.

### How was this patch tested?

- [x] MyPy tests of the PySpark source
    ```
    mypy --no-incremental --config python/mypy.ini python/pyspark
    ```
- [x] MyPy tests of Spark examples
    ```
   MYPYPATH=python/ mypy --no-incremental --config python/mypy.ini examples/src/main/python/ml examples/src/main/python/sql examples/src/main/python/sql/streaming
    ```
- [x] Existing Flake8 linter

- [x] Existing unit tests

Tested against:

- `mypy==0.790+dev.e959952d9001e9713d329a2f9b196705b028f894`
- `mypy==0.782`

Closes #29591 from zero323/SPARK-32681.

Authored-by: zero323 <mszymkiewicz@gmail.com>
Signed-off-by: HyukjinKwon <gurwls223@apache.org>
2020-09-24 14:15:36 +09:00

51 lines
2 KiB
Python

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import unittest
from pyspark.ml.linalg import Vectors
from pyspark.ml.stat import ChiSquareTest
from pyspark.sql import DataFrame
from pyspark.testing.mlutils import SparkSessionTestCase
class ChiSquareTestTests(SparkSessionTestCase):
def test_chisquaretest(self):
data = [[0, Vectors.dense([0, 1, 2])],
[1, Vectors.dense([1, 1, 1])],
[2, Vectors.dense([2, 1, 0])]]
df = self.spark.createDataFrame(data, ['label', 'feat'])
res = ChiSquareTest.test(df, 'feat', 'label')
# This line is hitting the collect bug described in #17218, commented for now.
# pValues = res.select("degreesOfFreedom").collect())
self.assertIsInstance(res, DataFrame)
fieldNames = set(field.name for field in res.schema.fields)
expectedFields = ["pValues", "degreesOfFreedom", "statistics"]
self.assertTrue(all(field in fieldNames for field in expectedFields))
if __name__ == "__main__":
from pyspark.ml.tests.test_stat import * # noqa: F401
try:
import xmlrunner # type: ignore[import]
testRunner = xmlrunner.XMLTestRunner(output='target/test-reports', verbosity=2)
except ImportError:
testRunner = None
unittest.main(testRunner=testRunner, verbosity=2)