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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2021/06/22 06:17:06 UTC
[GitHub] [arrow] edponce commented on a change in pull request #10567: ARROW-13096: [C++] Implement logarithm compute functions
edponce commented on a change in pull request #10567:
URL: https://github.com/apache/arrow/pull/10567#discussion_r655907205
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File path: cpp/src/arrow/compute/kernels/scalar_arithmetic_test.cc
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@@ -1511,5 +1517,55 @@ TEST(TestBinaryArithmeticDecimal, Divide) {
}
}
+TYPED_TEST(TestUnaryArithmeticFloating, Log) {
+ auto ty = this->type_singleton();
+ for (auto check_overflow : {false, true}) {
+ this->SetOverflowCheck(check_overflow);
+ this->AssertUnaryOp(Ln, ArrayFromJSON(ty, "[1, 2.7182818284590452354]"),
+ ArrayFromJSON(ty, "[0, 1]"));
+ this->AssertUnaryOp(Log10, ArrayFromJSON(ty, "[1, 10]"), ArrayFromJSON(ty, "[0, 1]"));
+ this->AssertUnaryOp(Log2, ArrayFromJSON(ty, "[1, 2]"), ArrayFromJSON(ty, "[0, 1]"));
+ }
+ this->AssertUnaryOpRaises(Ln, "[0]", "divide by zero");
+ this->AssertUnaryOpRaises(Ln, "[-1]", "domain error");
+ this->AssertUnaryOpRaises(Log10, "[0]", "divide by zero");
+ this->AssertUnaryOpRaises(Log10, "[-1]", "domain error");
+ this->AssertUnaryOpRaises(Log2, "[0]", "divide by zero");
+ this->AssertUnaryOpRaises(Log2, "[-1]", "domain error");
+}
+
+TYPED_TEST(TestUnaryArithmeticSigned, Log) {
+ auto ty = this->type_singleton();
+ for (auto check_overflow : {false, true}) {
+ this->SetOverflowCheck(check_overflow);
+ this->AssertUnaryOp(Ln, ArrayFromJSON(ty, "[1]"), ArrayFromJSON(float64(), "[0]"));
+ this->AssertUnaryOp(Log10, ArrayFromJSON(ty, "[1, 10]"),
+ ArrayFromJSON(float64(), "[0, 1]"));
+ this->AssertUnaryOp(Log2, ArrayFromJSON(ty, "[1, 2]"),
+ ArrayFromJSON(float64(), "[0, 1]"));
+ }
+ this->AssertUnaryOpRaises(Ln, "[0]", "divide by zero");
+ this->AssertUnaryOpRaises(Ln, "[-1]", "domain error");
+ this->AssertUnaryOpRaises(Log10, "[0]", "divide by zero");
+ this->AssertUnaryOpRaises(Log10, "[-1]", "domain error");
+ this->AssertUnaryOpRaises(Log2, "[0]", "divide by zero");
+ this->AssertUnaryOpRaises(Log2, "[-1]", "domain error");
+}
+
+TYPED_TEST(TestUnaryArithmeticUnsigned, Log) {
+ auto ty = this->type_singleton();
+ for (auto check_overflow : {false, true}) {
+ this->SetOverflowCheck(check_overflow);
+ this->AssertUnaryOp(Ln, ArrayFromJSON(ty, "[1]"), ArrayFromJSON(float64(), "[0]"));
+ this->AssertUnaryOp(Log10, ArrayFromJSON(ty, "[1, 10]"),
+ ArrayFromJSON(float64(), "[0, 1]"));
+ this->AssertUnaryOp(Log2, ArrayFromJSON(ty, "[1, 2]"),
+ ArrayFromJSON(float64(), "[0, 1]"));
+ }
+ this->AssertUnaryOpRaises(Ln, "[0]", "divide by zero");
+ this->AssertUnaryOpRaises(Log10, "[0]", "divide by zero");
+ this->AssertUnaryOpRaises(Log2, "[0]", "divide by zero");
+}
+
Review comment:
In valid test cases, no need to use `ty` (aka `this->type_singleton()`) with `ArrayFromJSON` because that is the default type. Also, no need to use the `this` keyword for the class methods.
Moreover, PR #10395 extends the unary scalar arithmetic test class to support combinations of JSON/Array inputs which will allow you to further simplify the test statements as follows:
* For integer inputs: `AssertUnaryOp(Ln, "[1]", ArrayFromJSON(float64(), "[0]"));`
* For floating point inputs: `AssertUnaryOp(Log10, "[1, 10]", "[0, 1]");`
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