address comments

Author: gengliangwang

sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/postgreSQL/StringUtils.scala

@@ -22,7 +22,7 @@ import org.apache.spark.unsafe.types.UTF8String
 object StringUtils {
   // "true", "yes", "1", "false", "no", "0", and unique prefixes of these strings are accepted.
   private[this] val trueStrings =
-    Set("true", "tru", "tr", "t", "yes", "ye", "y", "on", "1").map (UTF8String.fromString)
+    Set("true", "tru", "tr", "t", "yes", "ye", "y", "on", "1").map(UTF8String.fromString)
 
   private[this] val falseStrings =
     Set("false", "fals", "fal", "fa", "f", "no", "n", "off", "of", "0").map(UTF8String.fromString)

sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/CastSuite.scala

@@ -818,7 +818,7 @@ class CastSuite extends SparkFunSuite with ExpressionEvalHelper {
       "interval 1 years 3 months -3 days")
   }
 
-  test("cast string to boolean with Spark dialect") {
+  test("cast string to boolean") {
     checkCast("t", true)
     checkCast("true", true)
     checkCast("tRUe", true)

sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/postgreSQL/CastSuite.scala

@@ -24,7 +24,7 @@ class CastSuite extends SparkFunSuite with ExpressionEvalHelper {
     checkEvaluation(PostgreCastStringToBoolean(Literal(v)), expected)
   }
 
-  test("cast string to boolean with PostgreSQL dialect") {
+  test("cast string to boolean") {
     checkPostgreCastStringToBoolean("true", true)
     checkPostgreCastStringToBoolean("tru", true)
     checkPostgreCastStringToBoolean("tr", true)