rangadi commented on code in PR #38515:
URL: https://github.com/apache/spark/pull/38515#discussion_r1015760643


##########
connector/protobuf/src/test/scala/org/apache/spark/sql/protobuf/ProtobufSerdeSuite.scala:
##########
@@ -177,6 +177,31 @@ class ProtobufSerdeSuite extends SharedSparkSession {
     withFieldMatchType(Deserializer.create(CATALYST_STRUCT, protoNestedFile, 
_))
   }
 
+  test("raise cannot parse protobuf descriptor error") {
+    // passing serde_suite.proto instead serde_suite.desc
+    val testFileDesc = testFile("serde_suite.proto").replace("file:/", "/")
+    val e = intercept[AnalysisException] {
+      ProtobufUtils.buildDescriptor(testFileDesc, "FieldMissingInSQLRoot")
+    }
+
+    checkError(
+      exception = e,
+      errorClass = "CANNOT_PARSE_PROTOBUF_DESCRIPTOR",
+      parameters = Map("descFilePath" -> testFileDesc))
+  }
+
+  test("raise cannot construct protobuf descriptor error") {
+    val testFileDesc = 
testFile("basicmessage_noimports.desc").replace("file:/", "/")
+    val e = intercept[AnalysisException] {
+      ProtobufUtils.parseFileDescriptorSet(testFileDesc)

Review Comment:
   Users don't call this. Analysis exception thrown to the user if they try to 
use this.



##########
connector/protobuf/src/test/resources/protobuf/basicmessage_noimports.desc:
##########
@@ -0,0 +1,18 @@
+

Review Comment:
   Right. I didn't see the second test carefully. 



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