import quincy 17.2.0

[ceph.git] / ceph / src / arrow / cpp / src / arrow / compute / kernels / codegen_internal_test.cc

diff --git a/ceph/src/arrow/cpp/src/arrow/compute/kernels/codegen_internal_test.cc b/ceph/src/arrow/cpp/src/arrow/compute/kernels/codegen_internal_test.cc
new file mode 100644 (file)
index 0000000..d64143d
--- /dev/null
+++ b/ceph/src/arrow/cpp/src/arrow/compute/kernels/codegen_internal_test.cc
@@ -0,0 +1,163 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
+#include "arrow/compute/kernels/codegen_internal.h"
+#include "arrow/testing/gtest_util.h"
+#include "arrow/type.h"
+#include "arrow/type_fwd.h"
+
+namespace arrow {
+namespace compute {
+namespace internal {
+
+TEST(TestDispatchBest, CastBinaryDecimalArgs) {
+  std::vector<ValueDescr> args;
+  std::vector<DecimalPromotion> modes = {
+      DecimalPromotion::kAdd, DecimalPromotion::kMultiply, DecimalPromotion::kDivide};
+
+  // Any float -> all float
+  for (auto mode : modes) {
+    args = {decimal128(3, 2), float64()};
+    ASSERT_OK(CastBinaryDecimalArgs(mode, &args));
+    AssertTypeEqual(args[0].type, float64());
+    AssertTypeEqual(args[1].type, float64());
+  }
+
+  // Integer -> decimal with common scale
+  args = {decimal128(1, 0), int64()};
+  ASSERT_OK(CastBinaryDecimalArgs(DecimalPromotion::kAdd, &args));
+  AssertTypeEqual(args[0].type, decimal128(1, 0));
+  AssertTypeEqual(args[1].type, decimal128(19, 0));
+
+  // Add: rescale so all have common scale
+  args = {decimal128(3, 2), decimal128(3, -2)};
+  EXPECT_RAISES_WITH_MESSAGE_THAT(
+      NotImplemented, ::testing::HasSubstr("Decimals with negative scales not supported"),
+      CastBinaryDecimalArgs(DecimalPromotion::kAdd, &args));
+}
+
+TEST(TestDispatchBest, CastDecimalArgs) {
+  std::vector<ValueDescr> args;
+
+  // Any float -> all float
+  args = {decimal128(3, 2), float64()};
+  ASSERT_OK(CastDecimalArgs(args.data(), args.size()));
+  AssertTypeEqual(args[0].type, float64());
+  AssertTypeEqual(args[1].type, float64());
+
+  args = {float32(), float64(), decimal128(3, 2)};
+  ASSERT_OK(CastDecimalArgs(args.data(), args.size()));
+  AssertTypeEqual(args[0].type, float64());
+  AssertTypeEqual(args[1].type, float64());
+  AssertTypeEqual(args[2].type, float64());
+
+  // Promote to common decimal width
+  args = {decimal128(3, 2), decimal256(3, 2)};
+  ASSERT_OK(CastDecimalArgs(args.data(), args.size()));
+  AssertTypeEqual(args[0].type, decimal256(3, 2));
+  AssertTypeEqual(args[1].type, decimal256(3, 2));
+
+  // Rescale so all have common scale/precision
+  args = {decimal128(3, 2), decimal128(3, 0)};
+  ASSERT_OK(CastDecimalArgs(args.data(), args.size()));
+  AssertTypeEqual(args[0].type, decimal128(5, 2));
+  AssertTypeEqual(args[1].type, decimal128(5, 2));
+
+  args = {decimal128(3, 2), decimal128(3, -2)};
+  ASSERT_OK(CastDecimalArgs(args.data(), args.size()));
+  AssertTypeEqual(args[0].type, decimal128(7, 2));
+  AssertTypeEqual(args[1].type, decimal128(7, 2));
+
+  args = {decimal128(3, 0), decimal128(3, 1), decimal128(3, 2)};
+  ASSERT_OK(CastDecimalArgs(args.data(), args.size()));
+  AssertTypeEqual(args[0].type, decimal128(5, 2));
+  AssertTypeEqual(args[1].type, decimal128(5, 2));
+  AssertTypeEqual(args[2].type, decimal128(5, 2));
+
+  // Integer -> decimal with appropriate precision
+  args = {decimal128(3, 0), int64()};
+  ASSERT_OK(CastDecimalArgs(args.data(), args.size()));
+  AssertTypeEqual(args[0].type, decimal128(19, 0));
+  AssertTypeEqual(args[1].type, decimal128(19, 0));
+
+  args = {decimal128(3, 1), int64()};
+  ASSERT_OK(CastDecimalArgs(args.data(), args.size()));
+  AssertTypeEqual(args[0].type, decimal128(20, 1));
+  AssertTypeEqual(args[1].type, decimal128(20, 1));
+
+  args = {decimal128(3, -1), int64()};
+  ASSERT_OK(CastDecimalArgs(args.data(), args.size()));
+  AssertTypeEqual(args[0].type, decimal128(19, 0));
+  AssertTypeEqual(args[1].type, decimal128(19, 0));
+
+  // Overflow decimal128 max precision -> promote to decimal256
+  args = {decimal128(38, 0), decimal128(37, 2)};
+  ASSERT_OK(CastDecimalArgs(args.data(), args.size()));
+  AssertTypeEqual(args[0].type, decimal256(40, 2));
+  AssertTypeEqual(args[1].type, decimal256(40, 2));
+
+  // Overflow decimal256 max precision
+  args = {decimal256(76, 0), decimal256(75, 1)};
+  EXPECT_RAISES_WITH_MESSAGE_THAT(
+      Invalid,
+      ::testing::HasSubstr(
+          "Result precision (77) exceeds max precision of Decimal256 (76)"),
+      CastDecimalArgs(args.data(), args.size()));
+
+  // Incompatible, no cast
+  args = {decimal256(3, 2), float64(), utf8()};
+  ASSERT_OK(CastDecimalArgs(args.data(), args.size()));
+  AssertTypeEqual(args[0].type, decimal256(3, 2));
+  AssertTypeEqual(args[1].type, float64());
+  AssertTypeEqual(args[2].type, utf8());
+}
+
+TEST(TestDispatchBest, CommonTemporal) {
+  std::vector<ValueDescr> args;
+
+  args = {timestamp(TimeUnit::SECOND), timestamp(TimeUnit::NANO)};
+  AssertTypeEqual(timestamp(TimeUnit::NANO), CommonTemporal(args.data(), args.size()));
+  args = {timestamp(TimeUnit::SECOND, "UTC"), timestamp(TimeUnit::NANO, "UTC")};
+  AssertTypeEqual(timestamp(TimeUnit::NANO, "UTC"),
+                  CommonTemporal(args.data(), args.size()));
+  args = {date32(), timestamp(TimeUnit::NANO)};
+  AssertTypeEqual(timestamp(TimeUnit::NANO), CommonTemporal(args.data(), args.size()));
+  args = {date64(), timestamp(TimeUnit::SECOND)};
+  AssertTypeEqual(timestamp(TimeUnit::MILLI), CommonTemporal(args.data(), args.size()));
+  args = {date32(), date32()};
+  AssertTypeEqual(date32(), CommonTemporal(args.data(), args.size()));
+  args = {date64(), date64()};
+  AssertTypeEqual(date64(), CommonTemporal(args.data(), args.size()));
+  args = {date32(), date64()};
+  AssertTypeEqual(date64(), CommonTemporal(args.data(), args.size()));
+  args = {};
+  ASSERT_EQ(nullptr, CommonTemporal(args.data(), args.size()));
+  args = {float64(), int32()};
+  ASSERT_EQ(nullptr, CommonTemporal(args.data(), args.size()));
+  args = {timestamp(TimeUnit::SECOND), timestamp(TimeUnit::SECOND, "UTC")};
+  ASSERT_EQ(nullptr, CommonTemporal(args.data(), args.size()));
+  args = {timestamp(TimeUnit::SECOND, "America/Phoenix"),
+          timestamp(TimeUnit::SECOND, "UTC")};
+  ASSERT_EQ(nullptr, CommonTemporal(args.data(), args.size()));
+}
+
+}  // namespace internal
+}  // namespace compute
+}  // namespace arrow