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add zarr tests #4228

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11 changes: 11 additions & 0 deletions recipes/recipes_emscripten/zarr/test_import_zarr.py
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Original file line number Diff line number Diff line change
@@ -1,2 +1,13 @@
def test_import_zarr():
import zarr

def test_create_array():
import zarr
zarr.config.set({'async.concurrency': 1, 'threading.max_workers': 0})
import numpy as np
z = zarr.zeros((100, 100), chunks=(10, 10), dtype='f4')
# This only writes to 1 chunk out of 100!
z[0:10, 0:10] = 1
# This only reads 1 chunk
slice_data = z[0:10, 0:10]
assert np.all(slice_data == 1)
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