Add from_pyarrow benchmarks

Author: moeyensj

test/test_tables.py

@@ -2030,3 +2030,24 @@ def test_construct_from_chunked_array_wrong_type(self):
 
         with pytest.raises(ValueError):
             Pair.from_kwargs(x=x, y=y)
+
+
+@pytest.mark.parametrize("N", [100_000, 1_000_000, 10_000_000])
+@pytest.mark.benchmark(group="from-pyarrow")
+def test_bench_from_pyarrow_matching_schema(benchmark, N):
+    N = 1_000_000
+    x = pa.array(np.random.randint(low=-1000, high=1000, size=N), type=pa.int64())
+    y = pa.array(np.random.randint(low=-1000, high=1000, size=N), type=pa.int64())
+    table = pa.table({"x": x, "y": y}, schema=Pair.schema)
+
+    benchmark(Pair.from_pyarrow, table)
+
+
+@pytest.mark.parametrize("N", [100_000, 1_000_000, 10_000_000])
+@pytest.mark.benchmark(group="from-pyarrow")
+def test_bench_from_pyarrow_needs_cast(benchmark, N):
+    x = pa.array(np.random.randint(low=-1000, high=1000, size=N), type=pa.int32())
+    y = pa.array(np.random.randint(low=-1000, high=1000, size=N), type=pa.int64())
+    table = pa.table({"x": x, "y": y})
+
+    benchmark(Pair.from_pyarrow, table)