cloud-fan commented on a change in pull request #35060:
URL: https://github.com/apache/spark/pull/35060#discussion_r787790548
##########
File path:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/StringExpressionsSuite.scala
##########
@@ -888,6 +889,158 @@ class StringExpressionsSuite extends SparkFunSuite with
ExpressionEvalHelper {
Literal.create(null, IntegerType), Literal.create(null, IntegerType)),
null)
}
+ test("ToNumber") {
+ ToNumber(Literal("454"), Literal("")).checkInputDataTypes() match {
+ case TypeCheckResult.TypeCheckFailure(msg) =>
+ assert(msg.contains("Number format cannot be empty"))
+ }
+ ToNumber(Literal("454"), NonFoldableLiteral.create("999", StringType))
+ .checkInputDataTypes() match {
+ case TypeCheckResult.TypeCheckFailure(msg) =>
+ assert(msg.contains("Format expression must be foldable"))
+ }
+
+ // Test '0' and '9'
+
+ Seq("454", "054", "54", "450").foreach { input =>
+ val invalidFormat1 = 0.until(input.length - 1).map(_ => '0').mkString
+ val invalidFormat2 = 0.until(input.length - 2).map(_ => '0').mkString
+ val invalidFormat3 = 0.until(input.length - 1).map(_ => '9').mkString
+ val invalidFormat4 = 0.until(input.length - 2).map(_ => '9').mkString
+ Seq(invalidFormat1, invalidFormat2, invalidFormat3, invalidFormat4)
+ .filter(_.nonEmpty).foreach { format =>
+ checkExceptionInExpression[IllegalArgumentException](
+ ToNumber(Literal(input), Literal(format)),
+ s"The input string '$input' does not match the given number format:
'$format'")
+ }
+
+ val format1 = 0.until(input.length).map(_ => '0').mkString
+ val format2 = 0.until(input.length).map(_ => '9').mkString
+ val format3 = 0.until(input.length).map(i => i % 2 * 9).mkString
+ val format4 = 0.until(input.length + 1).map(_ => '0').mkString
+ val format5 = 0.until(input.length + 1).map(_ => '9').mkString
+ val format6 = 0.until(input.length + 1).map(i => i % 2 * 9).mkString
+ Seq(format1, format2, format3, format4, format5, format6).foreach {
format =>
+ checkEvaluation(ToNumber(Literal(input), Literal(format)),
Decimal(input))
+ }
+ }
+
+ // Test '.' and 'D'
+ checkExceptionInExpression[IllegalArgumentException](
+ ToNumber(Literal("454.2"), Literal("999")),
+ "The input string '454.2' does not match the given number format: '999'")
+ Seq("999.9", "000.0", "99.99", "00.00", "0000.0", "9999.9", "00.000",
"99.999")
+ .foreach { format =>
+ checkExceptionInExpression[IllegalArgumentException](
+ ToNumber(Literal("454.23"), Literal(format)),
+ s"The input string '454.23' does not match the given number format:
'$format'")
+ val format2 = format.replace('.', 'D')
+ checkExceptionInExpression[IllegalArgumentException](
+ ToNumber(Literal("454.23"), Literal(format2)),
+ s"The input string '454.23' does not match the given number format:
'$format2'")
+ }
+
+ Seq(
+ ("454.2", "000.0") -> Decimal(454.2),
+ ("454.2", "000D0") -> Decimal(454.2),
+ ("454.23", "000.00") -> Decimal(454.23),
+ ("454.23", "000D00") -> Decimal(454.23),
+ ("454.2", "000.00") -> Decimal(454.2),
+ ("454.2", "000D00") -> Decimal(454.2),
+ ("454.0", "000.0") -> Decimal(454),
+ ("454.0", "000D0") -> Decimal(454),
+ ("454.00", "000.00") -> Decimal(454),
+ ("454.00", "000D00") -> Decimal(454),
+ (".4542", ".0000") -> Decimal(0.4542),
+ (".4542", "D0000") -> Decimal(0.4542),
+ ("4542.", "0000.") -> Decimal(4542),
+ ("4542.", "0000D") -> Decimal(4542)
+ ).foreach { case ((str, format), expected) =>
+ checkEvaluation(ToNumber(Literal(str), Literal(format)), expected)
+ }
+
+ Seq("999.9.9", "999D9D9", "999.9D9", "999D9.9").foreach { str =>
+ ToNumber(Literal("454.3.2"), Literal(str)).checkInputDataTypes() match {
+ case TypeCheckResult.TypeCheckFailure(msg) =>
+ assert(msg.contains(s"At most one 'D' or '.' is allowed in the
number format: '$str'"))
+ }
+ }
+
+ // Test ',' and 'G'
+ checkExceptionInExpression[IllegalArgumentException](
+ ToNumber(Literal("123,456"), Literal("9G9")),
+ "The input string '123,456' does not match the given number format:
'9G9'")
+
+ Seq(
+ ("12,454", "99,999") -> Decimal(12454),
Review comment:
ditto, no need to repeat the test cases manually, we can replace `0`
with `9` in the loop body.
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