Github user JoshRosen commented on a diff in the pull request:
https://github.com/apache/spark/pull/7855#discussion_r37118806
--- Diff:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/ExpressionEvalHelper.scala
---
@@ -211,4 +215,80 @@ trait ExpressionEvalHelper {
plan(inputRow)).get(0, expression.dataType)
assert(checkResult(actual, expected))
}
+
+ def checkConsistency(dt: DataType, clazz: Class[_]): Unit = {
+ val ctor = clazz.getDeclaredConstructor(classOf[Expression])
+ forAll (randomGen(dt)) { (l: Literal) =>
+ val expr = ctor.newInstance(l).asInstanceOf[Expression]
+ cmpInterpretWithCodegen(EmptyRow, expr)
+ }
+ }
+
+ def checkConsistency(dt1: DataType, dt2: DataType, clazz: Class[_]):
Unit = {
+ val ctor = clazz.getDeclaredConstructor(classOf[Expression],
classOf[Expression])
+ forAll (
+ randomGen(dt1),
+ randomGen(dt2)
+ ) { (l1: Literal, l2: Literal) =>
+ val expr = ctor.newInstance(l1, l2).asInstanceOf[Expression]
+ cmpInterpretWithCodegen(EmptyRow, expr)
+ }
+ }
+
+ def checkConsistency(dt1: DataType, dt2: DataType, dt3: DataType,
+ clazz: Class[_]): Unit = {
+ val ctor = clazz.getDeclaredConstructor(
+ classOf[Expression], classOf[Expression], classOf[Expression])
+ forAll (
+ randomGen(dt1),
+ randomGen(dt2),
+ randomGen(dt3)
+ ) { (l1: Literal, l2: Literal, l3: Literal) =>
+ val expr = ctor.newInstance(l1, l2, l3).asInstanceOf[Expression]
+ cmpInterpretWithCodegen(EmptyRow, expr)
+ }
+ }
+
+ def checkSeqConsistency(dt: DataType, clazz: Class[_],
leastNumOfElements: Int = 0): Unit = {
--- End diff --
This could use a comment to explain that it tests with a sequence of
literals.
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