Source Iterable: fixed test_email_stream_chunked_encoding: added records filtering

[darynaishchenko]

Added retrieving only records from read_from_source() because reading from source also return log messages to correct assertion in test_email_stream_chunked_encoding.

[darynaishchenko]

/test connector=connectors/source-iterable

🕑 connectors/source-iterable https://github.com/airbytehq/airbyte/actions/runs/4063452474
✅ connectors/source-iterable https://github.com/airbytehq/airbyte/actions/runs/4063452474
Python tests coverage:

Name                                  Stmts   Miss  Cover
---------------------------------------------------------
source_iterable/utils.py                  5      0   100%
source_iterable/__init__.py               2      0   100%
source_iterable/source.py                34      1    97%
source_iterable/slice_generators.py      71      5    93%
source_iterable/streams.py              352     38    89%
---------------------------------------------------------
TOTAL                                   464     44    91%
	 Name                                                 Stmts   Miss  Cover   Missing
	 ----------------------------------------------------------------------------------
	 source_acceptance_test/base.py                          12      4    67%   16-19
	 source_acceptance_test/config.py                       141      5    96%   87, 93, 239, 243-244
	 source_acceptance_test/conftest.py                     211     95    55%   36, 42-44, 49, 54, 77, 83, 89-91, 110, 115-117, 123-125, 131-132, 137-138, 143, 149, 158-167, 173-178, 193, 217, 248, 254, 262-267, 275-285, 293-306, 311-317, 324-335, 342-358
	 source_acceptance_test/plugin.py                        69     25    64%   22-23, 31, 36, 120-140, 144-148
	 source_acceptance_test/tests/test_core.py              476    117    75%   53, 58, 97-108, 113-120, 124-125, 129-130, 380, 400, 438, 476-493, 506-517, 521-526, 532, 565-570, 608-615, 658-660, 663, 728-736, 748-751, 756, 812-813, 819, 822, 858-868, 881-906
	 source_acceptance_test/tests/test_incremental.py       160     14    91%   58-65, 70-83, 246
	 source_acceptance_test/utils/asserts.py                 39      2    95%   62-63
	 source_acceptance_test/utils/common.py                  94     10    89%   16-17, 32-38, 72, 75
	 source_acceptance_test/utils/compare.py                 62     23    63%   21-51, 68, 97-99
	 source_acceptance_test/utils/connector_runner.py       133     33    75%   24-27, 46-47, 50-54, 57-58, 73-75, 78-80, 83-85, 88-90, 93-95, 124-125, 159-161, 208
	 source_acceptance_test/utils/json_schema_helper.py     114     13    89%   31-32, 39, 42, 66-69, 97, 121, 203-205
	 ----------------------------------------------------------------------------------
	 TOTAL                                                 1690    341    80%

Build Passed

Test summary info:

=========================== short test summary info ============================
SKIPPED [1] ../usr/local/lib/python3.9/site-packages/source_acceptance_test/tests/test_core.py:98: The previous and actual specifications are identical.
SKIPPED [1] ../usr/local/lib/python3.9/site-packages/source_acceptance_test/tests/test_core.py:507: The previous and actual discovered catalogs are identical.
=========== 35 passed, 2 skipped, 37 warnings in 1364.54s (0:22:44) ============