zhengruifeng opened a new pull request, #38670:
URL: https://github.com/apache/spark/pull/38670
### What changes were proposed in this pull request?
use `assert_eq` in `PandasOnSparkTestCase` to compare dataframes
### Why are the changes needed?
show detailed error message
before:
```
Traceback (most recent call last):
File
"/home/jenkins/python/pyspark/sql/tests/connect/test_connect_basic.py", line
244, in test_fill_na
self.assertTrue(
AssertionError: False is not true
```
after:
```
AssertionError: DataFrame.iloc[:, 0] (column name="id") are different
DataFrame.iloc[:, 0] (column name="id") values are different (100.0 %)
[index]: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
[left]: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
[right]: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
Left:
id
id int64
dtype: object
Right:
id
id int64
dtype: object
```
### Does this PR introduce _any_ user-facing change?
No, test only
### How was this patch tested?
existing UT
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