Github user chenghao-intel commented on a diff in the pull request:
https://github.com/apache/spark/pull/6762#discussion_r33738885
--- Diff:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/StringFunctionsSuite.scala
---
@@ -226,5 +226,128 @@ class StringFunctionsSuite extends SparkFunSuite with
ExpressionEvalHelper {
// checkEvaluation(StringLength(Literal.create(null, StringType)),
null, create_row("abdef"))
}
+ test("TRIM/LTRIM/RTRIM") {
+ val s = 'a.string.at(0)
+ checkEvaluation(StringTrim(Literal(" aa ")), "aa", create_row(" abdef
"))
+ checkEvaluation(StringTrim(s), "abdef", create_row(" abdef "))
+
+ checkEvaluation(StringTrimLeft(Literal(" aa ")), "aa ", create_row("
abdef "))
+ checkEvaluation(StringTrimLeft(s), "abdef ", create_row(" abdef "))
+
+ checkEvaluation(StringTrimRight(Literal(" aa ")), " aa", create_row("
abdef "))
+ checkEvaluation(StringTrimRight(s), " abdef", create_row(" abdef "))
+ }
+
+ test("FORMAT") {
+ val f = 'f.string.at(0)
+ val d1 = 'd.int.at(1)
+ val s1 = 's.int.at(2)
+
+ val row1 = create_row("aa%d%s", 12, "cc")
+ val row2 = create_row(null, 12, "cc")
+ checkEvaluation(StringFormat(Literal("aa%d%s"), Literal(123),
Literal("a")), "aa123a", row1)
+ checkEvaluation(StringFormat(Literal("aa")), "aa", create_row(null))
+ checkEvaluation(StringFormat(Literal("aa%d%s"), Literal(123),
Literal("a")), "aa123a", row1)
+
+ checkEvaluation(StringFormat(f, d1, s1), "aa12cc", row1)
+ checkEvaluation(StringFormat(f, d1, s1), null, row2)
+ }
+
+ test("INSTR") {
+ val s1 = 'a.string.at(0)
--- End diff --
Yes, I will do that.
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