cloud-fan commented on code in PR #47442:
URL: https://github.com/apache/spark/pull/47442#discussion_r1694847531
##########
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/parser/SqlScriptingParserSuite.scala:
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@@ -316,6 +316,129 @@ class SqlScriptingParserSuite extends SparkFunSuite with
SQLHelper {
assert(e.getMessage.contains("Syntax error"))
}
+ test("if") {
+ val sqlScriptText =
+ """
+ |BEGIN
+ | IF 1=1 THEN
+ | SELECT 42;
+ | END IF;
+ |END
+ |""".stripMargin
+ val tree = parseScript(sqlScriptText)
+ assert(tree.collection.length == 1)
+ assert(tree.collection.head.isInstanceOf[IfElseStatement])
+ val ifStmt = tree.collection.head.asInstanceOf[IfElseStatement]
+ assert(ifStmt.conditions.length == 1)
+ assert(ifStmt.conditions.head.isInstanceOf[SingleStatement])
+ assert(ifStmt.conditions.head.getText == "1=1")
+ }
+
+ test("if else") {
+ val sqlScriptText =
+ """BEGIN
+ |IF 1 = 1 THEN
+ | SELECT 1;
+ |ELSE
+ | SELECT 2;
+ |END IF;
+ |END
+ """.stripMargin
+ val tree = parseScript(sqlScriptText)
+ assert(tree.collection.length == 1)
+ assert(tree.collection.head.isInstanceOf[IfElseStatement])
+
+ val ifStmt = tree.collection.head.asInstanceOf[IfElseStatement]
+ assert(ifStmt.conditions.length == 1)
+ assert(ifStmt.bodies.length == 2)
+
+ assert(ifStmt.conditions.head.isInstanceOf[SingleStatement])
+ assert(ifStmt.conditions.head.getText == "1 = 1")
+
+ assert(ifStmt.bodies.head.collection.length == 1)
+ assert(ifStmt.bodies.head.collection.head.isInstanceOf[SingleStatement])
+
assert(ifStmt.bodies.head.collection.head.asInstanceOf[SingleStatement].getText
== "SELECT 1")
+
+ assert(ifStmt.bodies(1).collection.length == 1)
+ assert(ifStmt.bodies(1).collection.head.isInstanceOf[SingleStatement])
+
assert(ifStmt.bodies(1).collection.head.asInstanceOf[SingleStatement].getText
== "SELECT 2")
+ }
+
+ test("if else if") {
+ val sqlScriptText =
+ """BEGIN
+ |IF 1 = 1 THEN
+ | SELECT 1;
+ |ELSE IF 2 = 2 THEN
+ | SELECT 2;
+ |ELSE
+ | SELECT 3;
+ |END IF;
+ |END
+ """.stripMargin
+ val tree = parseScript(sqlScriptText)
+ assert(tree.collection.length == 1)
+ assert(tree.collection.head.isInstanceOf[IfElseStatement])
+
+ val ifStmt = tree.collection.head.asInstanceOf[IfElseStatement]
+ assert(ifStmt.conditions.length == 2)
+ assert(ifStmt.bodies.length == 3)
+
+ assert(ifStmt.conditions.head.isInstanceOf[SingleStatement])
+ assert(ifStmt.conditions.head.getText == "1 = 1")
+
+ assert(ifStmt.bodies.head.collection.head.isInstanceOf[SingleStatement])
+
assert(ifStmt.bodies.head.collection.head.asInstanceOf[SingleStatement].getText
== "SELECT 1")
+
+ assert(ifStmt.conditions(1).isInstanceOf[SingleStatement])
+ assert(ifStmt.conditions(1).getText == "2 = 2")
+
+ assert(ifStmt.bodies(1).collection.head.isInstanceOf[SingleStatement])
+
assert(ifStmt.bodies(1).collection.head.asInstanceOf[SingleStatement].getText
== "SELECT 2")
+
+ assert(ifStmt.bodies(2).collection.head.isInstanceOf[SingleStatement])
+
assert(ifStmt.bodies(2).collection.head.asInstanceOf[SingleStatement].getText
== "SELECT 3")
+ }
+
+ test("if multi else if") {
Review Comment:
can we test nested if-else?
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