Details
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Improvement
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Status: Resolved
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Minor
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Resolution: Fixed
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None
Description
Test cases using ArrayFromJSON assumes little endian platform
The following test cases seem to assume little-endian platform.
TEST_F(TestChunkedArray, View) at https://github.com/apache/arrow/blob/master/cpp/src/arrow/table_test.cc#L175
TEST(TestArrayView, PrimitiveAsFixedSizeBinary) at https://github.com/apache/arrow/blob/master/cpp/src/arrow/array_view_test.cc#L105
TEST(TestArrayView, StructAsStructSimple) at https://github.com/apache/arrow/blob/master/cpp/src/arrow/array_view_test.cc#L126
TEST(TestArrayView, ExtensionType) at https://github.com/apache/arrow/blob/master/cpp/src/arrow/array_view_test.cc
One of examples is PrimitiveAsFixedSizeBinary.
TEST(TestArrayView, PrimitiveAsFixedSizeBinary) {
auto arr = ArrayFromJSON(int32(), "[2020568934, 2054316386, null]");
auto expected = ArrayFromJSON(fixed_size_binary(4), R"(["foox", "barz", null])");
CheckView(arr, expected);
CheckView(expected, arr);
}
The expected strings are represented in binary as follows:
"foox" = [0x66 0x6f 0x6f 0x78] "barz" = [0x62 0x61 0x72 0x7a]
This test gives a value as raw int32. The current values assume only a little-endian platform as follows to generate the expected binary sequence.
2020568934 = 0x786f6f66 2054316386 = 0x7a726162
