def test_protobuf():
x = StringTracker()
data = ["one", "two", "three", "one", "one", "One", "six", None, None]
for record in data:
x.update(record)
x2 = StringTracker.from_protobuf(x.to_protobuf())
assert x.count == x2.count
assert x.items.get_total_weight() == x2.items.get_total_weight()
assert x.theta_sketch.get_result().get_estimate() == x2.theta_sketch.get_result().get_estimate()
def from_protobuf(message):
"""
Load from a protobuf message
Returns
-------
column_profile : ColumnProfile
"""
schema_tracker = SchemaTracker.from_protobuf(
message.schema,
legacy_null_count=message.counters.null_count.value)
return ColumnProfile(
message.name,
counters=(CountersTracker.from_protobuf(message.counters)),
schema_tracker=schema_tracker,
number_tracker=NumberTracker.from_protobuf(message.numbers),
string_tracker=StringTracker.from_protobuf(message.strings),
frequent_items=FrequentItemsSketch.from_protobuf(
message.frequent_items),
cardinality_tracker=HllSketch.from_protobuf(
message.cardinality_tracker),
)