Refactor tests for stream readers into smaller files

[mikeprosserni]

• This contribution adheres to CONTRIBUTING.md.
• I've updated CHANGELOG.md if applicable.
• I've added tests applicable for this pull request

What does this Pull Request accomplish?

Along the same lines as my other PR #816, this splits up large test files into smaller more manageable test files. It also moves common helper functions into a conftest.py.

Why should this Pull Request be merged?

This should make reviewing future changes easier.

What testing has been done?

All the tests pass.

[github-actions]

Test Results

    38 files  ±0      38 suites  ±0   1h 2m 23s ⏱️ +49s
 2 675 tests ±0   2 232 ✅ ±0    443 💤 ±0  0 ❌ ±0 
47 382 runs  ±0  40 226 ✅ ±0  7 156 💤 ±0  0 ❌ ±0 

Results for commit 3c20f09. ± Comparison against base commit 859c18d.

This pull request removes 296 and adds 296 tests. Note that renamed tests count towards both.

tests.component.test_stream_readers_ai ‑ test___analog_multi_channel_reader___read_into_undersized_waveforms___throws_exception[grpc_init_kwargs]
tests.component.test_stream_readers_ai ‑ test___analog_multi_channel_reader___read_into_undersized_waveforms___throws_exception[library_init_kwargs]
tests.component.test_stream_readers_ai ‑ test___analog_multi_channel_reader___read_many_sample___returns_valid_samples[grpc_init_kwargs]
tests.component.test_stream_readers_ai ‑ test___analog_multi_channel_reader___read_many_sample___returns_valid_samples[library_init_kwargs]
tests.component.test_stream_readers_ai ‑ test___analog_multi_channel_reader___read_many_sample_with_wrong_dtype___raises_error_with_correct_dtype[grpc_init_kwargs]
tests.component.test_stream_readers_ai ‑ test___analog_multi_channel_reader___read_many_sample_with_wrong_dtype___raises_error_with_correct_dtype[library_init_kwargs]
tests.component.test_stream_readers_ai ‑ test___analog_multi_channel_reader___read_one_sample___returns_valid_samples[grpc_init_kwargs]
tests.component.test_stream_readers_ai ‑ test___analog_multi_channel_reader___read_one_sample___returns_valid_samples[library_init_kwargs]
tests.component.test_stream_readers_ai ‑ test___analog_multi_channel_reader___read_one_sample_with_wrong_dtype___raises_error_with_correct_dtype[grpc_init_kwargs]
tests.component.test_stream_readers_ai ‑ test___analog_multi_channel_reader___read_one_sample_with_wrong_dtype___raises_error_with_correct_dtype[library_init_kwargs]
…

tests.component.readers.test_analog_multi_channel_reader ‑ test___analog_multi_channel_reader___read_into_undersized_waveforms___throws_exception[grpc_init_kwargs]
tests.component.readers.test_analog_multi_channel_reader ‑ test___analog_multi_channel_reader___read_into_undersized_waveforms___throws_exception[library_init_kwargs]
tests.component.readers.test_analog_multi_channel_reader ‑ test___analog_multi_channel_reader___read_many_sample___returns_valid_samples[grpc_init_kwargs]
tests.component.readers.test_analog_multi_channel_reader ‑ test___analog_multi_channel_reader___read_many_sample___returns_valid_samples[library_init_kwargs]
tests.component.readers.test_analog_multi_channel_reader ‑ test___analog_multi_channel_reader___read_many_sample_with_wrong_dtype___raises_error_with_correct_dtype[grpc_init_kwargs]
tests.component.readers.test_analog_multi_channel_reader ‑ test___analog_multi_channel_reader___read_many_sample_with_wrong_dtype___raises_error_with_correct_dtype[library_init_kwargs]
tests.component.readers.test_analog_multi_channel_reader ‑ test___analog_multi_channel_reader___read_one_sample___returns_valid_samples[grpc_init_kwargs]
tests.component.readers.test_analog_multi_channel_reader ‑ test___analog_multi_channel_reader___read_one_sample___returns_valid_samples[library_init_kwargs]
tests.component.readers.test_analog_multi_channel_reader ‑ test___analog_multi_channel_reader___read_one_sample_with_wrong_dtype___raises_error_with_correct_dtype[grpc_init_kwargs]
tests.component.readers.test_analog_multi_channel_reader ‑ test___analog_multi_channel_reader___read_one_sample_with_wrong_dtype___raises_error_with_correct_dtype[library_init_kwargs]
…

This pull request removes 80 skipped tests and adds 80 skipped tests. Note that renamed tests count towards both.

tests.component.test_stream_readers_ai ‑ test___analog_multi_channel_reader___read_into_undersized_waveforms___throws_exception[grpc_init_kwargs]
tests.component.test_stream_readers_ai ‑ test___analog_multi_channel_reader___read_waveforms___returns_valid_waveforms[grpc_init_kwargs]
tests.component.test_stream_readers_ai ‑ test___analog_multi_channel_reader___read_waveforms_in_place___populates_valid_waveforms[grpc_init_kwargs]
tests.component.test_stream_readers_ai ‑ test___analog_multi_channel_reader___read_waveforms_no_args___returns_valid_waveforms[grpc_init_kwargs]
tests.component.test_stream_readers_ai ‑ test___analog_multi_channel_reader___read_with_wrong_number_of_waveforms___throws_exception[grpc_init_kwargs]
tests.component.test_stream_readers_ai ‑ test___analog_multi_channel_reader_with_both_flags___read_waveforms___includes_both_timing_and_extended_properties[grpc_init_kwargs]
tests.component.test_stream_readers_ai ‑ test___analog_multi_channel_reader_with_extended_properties_flag___read_waveforms___only_includes_extended_properties[grpc_init_kwargs]
tests.component.test_stream_readers_ai ‑ test___analog_multi_channel_reader_with_none_flag___read_waveforms___minimal_waveform_data[grpc_init_kwargs]
tests.component.test_stream_readers_ai ‑ test___analog_multi_channel_reader_with_timing_flag___read_waveforms___only_includes_timing_data[grpc_init_kwargs]
tests.component.test_stream_readers_ai ‑ test___analog_single_channel_reader___read_into_undersized_waveform___throws_exception[grpc_init_kwargs]
…

tests.component.readers.test_analog_multi_channel_reader ‑ test___analog_multi_channel_reader___read_into_undersized_waveforms___throws_exception[grpc_init_kwargs]
tests.component.readers.test_analog_multi_channel_reader ‑ test___analog_multi_channel_reader___read_waveforms___returns_valid_waveforms[grpc_init_kwargs]
tests.component.readers.test_analog_multi_channel_reader ‑ test___analog_multi_channel_reader___read_waveforms_in_place___populates_valid_waveforms[grpc_init_kwargs]
tests.component.readers.test_analog_multi_channel_reader ‑ test___analog_multi_channel_reader___read_waveforms_no_args___returns_valid_waveforms[grpc_init_kwargs]
tests.component.readers.test_analog_multi_channel_reader ‑ test___analog_multi_channel_reader___read_with_wrong_number_of_waveforms___throws_exception[grpc_init_kwargs]
tests.component.readers.test_analog_multi_channel_reader ‑ test___analog_multi_channel_reader_with_both_flags___read_waveforms___includes_both_timing_and_extended_properties[grpc_init_kwargs]
tests.component.readers.test_analog_multi_channel_reader ‑ test___analog_multi_channel_reader_with_extended_properties_flag___read_waveforms___only_includes_extended_properties[grpc_init_kwargs]
tests.component.readers.test_analog_multi_channel_reader ‑ test___analog_multi_channel_reader_with_none_flag___read_waveforms___minimal_waveform_data[grpc_init_kwargs]
tests.component.readers.test_analog_multi_channel_reader ‑ test___analog_multi_channel_reader_with_timing_flag___read_waveforms___only_includes_timing_data[grpc_init_kwargs]
tests.component.readers.test_analog_single_channel_reader ‑ test___analog_single_channel_reader___read_into_undersized_waveform___throws_exception[grpc_init_kwargs]
…