yanghua commented on a change in pull request #6700: [FLINK-10340][table] Add
Cosh math function supported in Table API and SQL
URL: https://github.com/apache/flink/pull/6700#discussion_r221417664
##########
File path:
flink-libraries/flink-table/src/test/scala/org/apache/flink/table/expressions/ScalarFunctionsTest.scala
##########
@@ -1093,6 +1093,47 @@ class ScalarFunctionsTest extends ScalarTypesTestBase {
math.sqrt(2.2).toString)
}
+ @Test
+ def testCosh(): Unit = {
+ testAllApis(
+ 0.cosh(),
+ "0.cosh()",
+ "COSH(0)",
+ math.cosh(0).toString
Review comment:
ASAIK, Most of the trigonometric test cases of the `ScalarFunctionsTest`
class use `toString` to reflect how the expected result value is derived. This
is just test code and does not affect and bring performance issues to Flink. I
think from the point of view of code readability, there is no problem with this
writing.
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