TST: Add the SparseArray constructor performance test

Author: Licht-T

asv_bench/benchmarks/sparse.py

@@ -2,7 +2,7 @@
 
 from .pandas_vb_common import *
 import scipy.sparse
-from pandas import SparseSeries, SparseDataFrame
+from pandas import SparseSeries, SparseDataFrame, SparseArray
 
 
 class sparse_series_to_frame(object):
@@ -23,6 +23,58 @@ def time_sparse_series_to_frame(self):
         SparseDataFrame(self.series)
 
 
+class sparse_array_constructor(object):
+    goal_time = 0.2
+
+    def setup(self):
+        np.random.seed(1)
+        self.int64_10percent = self.make_numeric_array(length=1000000, dense_size=100000, fill_value=0, dtype=np.int64)
+        self.int64_1percent = self.make_numeric_array(length=1000000, dense_size=10000, fill_value=0, dtype=np.int64)
+
+        self.float64_10percent = self.make_numeric_array(length=1000000, dense_size=100000, fill_value=np.nan, dtype=np.float64)
+        self.float64_1percent = self.make_numeric_array(length=1000000, dense_size=10000, fill_value=np.nan, dtype=np.float64)
+
+        self.object_10percent = self.make_object_array(length=1000000, dense_size=100000, fill_value=0)
+        self.object_1percent = self.make_object_array(length=1000000, dense_size=10000, fill_value=0)
+
+    def make_numeric_array(self, length, dense_size, fill_value, dtype):
+        arr = np.array([fill_value] * length, dtype=dtype)
+        indexer = np.unique(np.random.randint(0, length, dense_size))
+        arr[indexer] = np.random.randint(0, 100, len(indexer))
+        return (arr, fill_value, dtype)
+
+    def make_object_array(self, length, dense_size, fill_value):
+        elems = np.array(['a', 0.0, False, 1, 2], dtype=np.object)
+        arr = np.array([fill_value] * length, dtype=np.object)
+        indexer = np.unique(np.random.randint(0, length, dense_size))
+        arr[indexer] = np.random.choice(elems, len(indexer))
+        return (arr, fill_value, np.object)
+
+    def time_sparse_array_constructor_int64_10percent(self):
+        arr, fill_value, dtype = self.int64_10percent
+        SparseArray(arr, fill_value=fill_value, dtype=dtype)
+
+    def time_sparse_array_constructor_int64_1percent(self):
+        arr, fill_value, dtype = self.int64_1percent
+        SparseArray(arr, fill_value=fill_value, dtype=dtype)
+
+    def time_sparse_array_constructor_float64_10percent(self):
+        arr, fill_value, dtype = self.float64_10percent
+        SparseArray(arr, fill_value=fill_value, dtype=dtype)
+
+    def time_sparse_array_constructor_float64_1percent(self):
+        arr, fill_value, dtype = self.float64_1percent
+        SparseArray(arr, fill_value=fill_value, dtype=dtype)
+
+    def time_sparse_array_constructor_object_10percent(self):
+        arr, fill_value, dtype = self.object_10percent
+        SparseArray(arr, fill_value=fill_value, dtype=dtype)
+
+    def time_sparse_array_constructor_object_1percent(self):
+        arr, fill_value, dtype = self.object_1percent
+        SparseArray(arr, fill_value=fill_value, dtype=dtype)
+
+
 class sparse_frame_constructor(object):
     goal_time = 0.2