[test](copy into) add copy into regression test case (#41529)

Add copy into regression test case.

regression-test/suites/load_p0/copy_into/test_copy_into.groovy

@@ -0,0 +1,146 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+suite("test_copy_into", "p0") {
+    if (isCloudMode()) {
+        def externalStageName = "test_copy_into"
+        def filePrefix = "copy_into/json"
+        def tableName = "json_test"
+        try_sql """drop stage if exists ${externalStageName}"""
+        sql """
+            create stage if not exists ${externalStageName} 
+            properties ('endpoint' = '${getS3Endpoint()}' ,
+            'region' = '${getS3Region()}' ,
+            'bucket' = '${getS3BucketName()}' ,
+            'prefix' = 'smoke-test' ,
+            'ak' = '${getS3AK()}' ,
+            'sk' = '${getS3SK()}' ,
+            'provider' = '${getS3Provider()}',
+            'access_type' = 'aksk',
+            'default.file.column_separator' = "|");
+        """
+
+        def dropTable =  """ DROP TABLE IF EXISTS ${tableName}; """
+        def createTable = """
+            CREATE TABLE ${tableName} (
+                    p_partkey     int NOT NULL DEFAULT "1",
+                    p_name        VARCHAR(55) NOT NULL DEFAULT "2",
+                    p_mfgr        VARCHAR(25) NOT NULL DEFAULT "3",
+                    p_brand       VARCHAR(10) NOT NULL DEFAULT "4",
+                    p_type        VARCHAR(25) NOT NULL DEFAULT "5",
+                    p_size        int NOT NULL DEFAULT "6"
+                    )ENGINE=OLAP
+            DUPLICATE KEY(`p_partkey`)
+            COMMENT "OLAP"
+            DISTRIBUTED BY HASH(`p_partkey`) BUCKETS 3;
+        """
+
+        def tartgetColumnsList = [ 
+                            """""",
+                            """""",
+                            """""",
+                            """(p_partkey, p_name, p_mfgr, p_brand, p_type, p_size)""",
+                            """(p_partkey, p_name, p_mfgr, p_brand, p_type, p_size)""",
+                            """(p_size, p_type, p_brand, p_mfgr, p_name, p_partkey)""",
+                            """(p_partkey, p_name, p_mfgr, p_brand)""",
+                            """(p_partkey, p_name, p_size)""",
+                            """(p_partkey, p_name, p_mfgr, p_brand, p_type, p_size)""",
+                            """(p_partkey, p_name, p_mfgr, p_brand, p_type, p_size)""",
+                            ]
+
+        def selectColumnsList = [ 
+                            """p_partkey, p_name, p_mfgr, p_brand, p_type, p_size""",
+                            """p_partkey, p_name, p_mfgr, p_brand, not_exist, p_size""",
+                            """*""",
+                            """p_partkey, p_name, p_mfgr, p_brand, p_type, p_size""",
+                            """p_partkey, p_name, p_mfgr, p_brand, not_exist, p_size""",
+                            """p_size, p_type, p_brand, p_mfgr, p_name, p_partkey""",
+                            """p_partkey, p_name, p_mfgr, p_brand """,
+                            """p_partkey, p_name, greatest(cast(p_partkey as int), cast(p_size as int))""",
+                            """p_partkey + 1,  p_name, p_mfgr, p_brand, p_type, p_size * 2""",
+                            """p_partkey, p_name, p_mfgr, p_brand, p_type, p_size""",
+                            ]
+
+        def whereExprs = [
+                            "",
+                            "",
+                            "",
+                            "",
+                            "",
+                            "",
+                            "",
+                            "",
+                            "",
+                            "where p_partkey>10",
+                            ]
+
+        def loadRows = [
+                        "100490",
+                        "0",
+                        "100490",
+                        "100490",
+                        "0",
+                        "100490",
+                        "100490",
+                        "100490",
+                        "100490",
+                        "100480",
+                        ]
+
+        def errorMsgs = [
+                        "",
+                        "quality not good enough to cancel",
+                        "",
+                        "",
+                        "quality not good enough to cancel",
+                        "",
+                        "",
+                        "",
+                        "",
+                        "",
+                        ]
+
+
+        def do_copy_into = {table, targetColumns, selectColumns, stageName, prefix, whereExpr ->
+            sql """
+                copy into $table $targetColumns
+                from (select $selectColumns from @${stageName}('${prefix}/part.json') $whereExpr)
+                properties ('file.type' = 'json', 'copy.async' = 'false');
+                """
+        }
+
+        def result;
+        for (int i = 0; i < tartgetColumnsList.size(); i++) {
+            sql "$dropTable"
+            sql "$createTable"
+            result = do_copy_into.call(tableName, tartgetColumnsList[i], selectColumnsList[i],
+                                        externalStageName, filePrefix, whereExprs[i])
+            logger.info("i: " + i + ", copy result: " + result)
+            assertTrue(result.size() == 1)
+            if (result[0][1].equals("FINISHED")) {
+                assertTrue(result[0][4].equals(loadRows[i]), "expected: " + loadRows[i] + ", actual: " + result[0][4])
+                continue;
+            }
+            if (result[0][1].equals("CANCELLED")) {
+                assertTrue(errorMsgs[i] == result[0][3], "expected: " + errorMsgs[i] + ", actual: " + result[0][3])
+                continue;
+            }
+            assertTrue(false, "should not come here")
+        }
+        try_sql """drop stage if exists ${externalStageName}"""
+    }
+}