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cellxgene/server/test/test_scanpy_engine.py
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Python

import unittest
from server.app.scanpy_engine.scanpy_engine import ScanpyEngine
class UtilTest(unittest.TestCase):
def setUp(self):
self.data = ScanpyEngine("example-dataset/", schema="data_schema.json")
def test_init(self):
assert self.data.cell_count == 2638
assert self.data.gene_count == 1838
epsilon = 0.000005
assert self.data.data.X[0,0] - -0.17146951 < epsilon
def test_schema(self):
assert self.data.schema == {'CellName': {'type': 'string', 'variabletype': 'categorical', 'displayname': 'Name', 'include': True}, 'n_genes': {'type': 'int', 'variabletype': 'continuous', 'displayname': 'Num Genes', 'include': True}, 'percent_mito': {'type': 'float', 'variabletype': 'continuous', 'displayname': 'Mitochondrial Percentage', 'include': True}, 'n_counts': {'type': 'float', 'variabletype': 'continuous', 'displayname': 'Num Counts', 'include': True}, 'louvain': {'type': 'string', 'variabletype': 'categorical', 'displayname': 'Louvain Cluster', 'include': True}}
def test_cells(self):
cells = self.data.cells()
assert "AAACATACAACCAC-1" in cells
assert len(cells) == 2638
def test_genes(self):
genes = self.data.genes()
assert "SEPT4" in genes
assert len(genes) == 1838
def test_filter_categorical(self):
filter = {"louvain": {"variable_type": "categorical", "value_type": "string", "query": ["B cells"]}}
filtered_data = self.data.filter_cells(filter)
assert filtered_data.shape == (342, 1838)
louvain_vals = filtered_data.obs['louvain'].tolist()
assert "B cells" in louvain_vals
assert "NK cells" not in louvain_vals
def test_filter_continuous(self):
# print(self.data.data.obs["n_genes"].tolist())
filter = {"n_genes": {"variable_type": "continuous", "value_type": "int", "query": {"min": 300, "max": 400}}}
filtered_data = self.data.filter_cells(filter)
assert filtered_data.shape == (71, 1838)
n_genes_vals = filtered_data.obs['n_genes'].tolist()
for val in n_genes_vals:
assert 300 <= val <= 400
if __name__ == '__main__':
unittest.main()