Continuous Integration Part 2

Transcription

1 1 Continuous Integration Part 2 This blog post is a follow up to my blog post Continuous Integration (CI), in which I described how to execute test cases in Code Tester (CT) in a CI environment. What I didn't explain in the afore mentioned blog post is how to deploy the test definitions (TD), only how to execute them. Some users have notified in the forums that I missed out on deployment and this blog post rectifies this. This blog post assumes that you're using the latest beta of CT ( as of this time of writing) but also offers some hints on how to accomplish the same with earlier versions. Command Line You can import a given TD through the following command line parameter: i or Import. However, there are several issues with this approach: Prior to CT the exit code was never reflecting errors that occurred -- it always returned zero. Prior to CT the application could show message boxes reflecting issues with the import, which obviously isn't useful in an automated environment. The command line of the Windows application isn't easily available from CI software running on other OSs like Linux or Solaris. However, if you do have access to the Windows application in your CI environment and if you're using CT or newer, you can make use of the new CT command line interface offered by the new executable QctoCmd.exe, which differs from the "old" command line offered through the GUI executable QuestCodeTesterOracle.exe (or QctoBeta.exe) in the following ways: It is a Windows Console application, such that you will no longer get GUI message boxes popping up with error messages. The exit code is now non-zero in case of an error, always zero for success. The error codes are documented in the on-line help system. Example command line for for importing an XML file (note how you no longer need the Close parameter that you had to include previous to in order to close down the application after the operation): "C:\Program Files (x86)\quest Software\Quest Code Tester for Oracle Beta 5\QctoCmd.exe" u=qcto200b5 p=o112 d=o112 DBHome=o112_32 i=c:\myproject\tests\q##my_function.xml po=scott to=qcto200b5 which imports the file C:\MyProject\tests\Q##MY_FUNCTION.xml into the repository owned by QCTO200B5, test program generated in the schema QCTO200B5 and program code is owned by SCOTT. Standard output from the command line shown above could be: Quest Code Tester for Oracle command line utility. Version Importing started C:\MyProject\tests\Q##MY_FUNCTION.xml - SUCCESS Importing ended

2 Exit code 0 Calling with a parameter of? or h will show all the available parameters. PLSQL API The PLSQL API is readily available on any Oracle-supported platform where you have SQL*Plus installed. There is one top-level API you can call to import the XML -- you "just" need to get the XML into a CLOB, set some options and then import. This is demonstrated in the following. Also, two different ways of reading the file into a CLOB are demonstrated, depending on where you can access the XML file from. In any case, it's important that the XML file is transferred binary from where it was exported to where it's referenced for import, in order to avoid issues with unwanted conversions of CRLF in string literals etc. Access to XML File on Database Server You can use BFILE and DBMS_LOB.LOADCLOBFROMFILE to read a file into a CLOB. Here's an example SQL*Plus script that reads a given file into a CLOB SQL*Plus variable, assuming that you have read access to an Oracle directory MY_PROJECT_TESTS that in turn points to an OS directory like C:\MyProject\tests (Windows) or usercimyprojecttests (Linux, UNIX): variable xml_import clob declare file bfile := bfilename('my_project_tests', 'Q##MY_FUNCTION.xml' dst_offset integer := 1; src_offset integer := 1; lang integer := 0; warn integer; dbms_lob.createtemporary(:xml_import, true, dbms_lob.call dbms_lob.fileopen(file, dbms_lob.file_readonly dbms_lob.loadclobfromfile( :xml_import, file, dbms_lob.lobmaxsize, dst_offset, src_offset, nls_charset_id('al32utf8'), lang, warn dbms_lob.fileclose(file dbms_output.put_line('read ' length(:xml_import) ' character(s)' Please note how it's specified that the XML file is in UTF-8 encoding (which is always the case, irrespective of databasenational character set and NLS_LANG). This is done through the usage of the AL32UTF8 character set. You can also use UTL_FILE to read the file line-by-line but this is less effective than the solution above. Access to XML File on CI Server If the XML file cannot be accessed from the Oracle database server but instead is accessible from your CI server, you can write a script, Java program or similar that creates an anonymous PLSQL block that first builds a BLOB from the file's bytes, then converts the result to a CLOB using AL32UTF8 as the character set. This way you avoid issues with NLS_LANG, what your Command Promptshell uses as code pageterm, character set etc. Such an anonymous block could look like (including the declaration of the CLOB variable): variable xml_import clob set linesize 220 declare xml_import_binary blob; src_offset integer := 1;

3 3 dst_offset integer := 1; lang integer := 0; warn integer; dbms_lob.createtemporary(xml_import_binary, true, dbms_lob.call dbms_lob.append(xml_import_binary, hextoraw('3c f5f f52543e0d0a093c212d2d0d0a546f f e f E C ')... dbms_lob.append(xml_import_binary, hextoraw('3c2f554e49545f e0d0a09093c2f51555f e e0d0a093c2f f E F4E533E0D0A3C2F F5F F52543E0D0A') dbms_lob.createtemporary(:xml_import, true, dbms_lob.call dbms_lob.converttoclob( :xml_import, xml_import_binary, dbms_lob.lobmaxsize, dst_offset, src_offset, nls_charset_id('al32utf8'), lang, warn Here's a small Java program that converts a given text file to a SQL*Plus script similar to the one above (written on standard output). The end result is that we have the file represented in the CLOB variable :xml_import: import java.io.fileinputstream; import java.io.filenotfoundexception; import java.io.ioexception; import java.io.inputstream; public class FileToClob { ** * The hexadecimal characters. * private static final char HEX_CHARS[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' ; public FileToClob(String filepathname) throws FileNotFoundException, IOException { InputStream is = new FileInputStream(filePathName print( "variable xml_import clob\n" + "set linesize 220\n" + "\n" + "declare\n" + " xml_import_binary blob;\n" + " src_offset integer := 1;\n" + " dst_offset integer := 1;\n" + " lang integer := 0;\n" + " warn integer;\n" + "\n" + " dbms_lob.createtemporary(xml_import_binary, true, dbms_lob.call\n" int n; byte[] bytes = new byte[80]; while ((n = is.read(bytes)) > 0) { print(" dbms_lob.append(xml_import_binary, hextoraw('" for (int i = 0; i < n; i++) { print("" + HEX_CHARS[(bytes[i] & 0xF0) >> 4] + HEX_CHARS[bytes[i] & 0x0F] print("')\n" is.close( print("\n" print( " dbms_lob.createtemporary(:xml_import, true, dbms_lob.call\n" + " dbms_lob.converttoclob(\n" + " :xml_import, xml_import_binary, dbms_lob.lobmaxsize,\n" + " dst_offset, src_offset, nls_charset_id('al32utf8'), lang, warn\n" + " \n" + "\n" + "" private static void print(string s) {

4 4 System.out.print(s public static void main(string[] args) throws FileNotFoundException, IOException { FileToClob filetoclob = new FileToClob(args[0] Calling Import PLSQL API Now we have read the XML file into our :xml_import CLOB variable, we can simply call the CT PLSQL API for importing this CLOB. This is divided into 4 parts: Parsing the XML, setting import options (2 parts) and importing: -- Load the export, preparing for import. qu_xmldom_import.init_xml(:xml_import -- Set options for the import. qu_xmldom_import.set_options( include_results_in => false, include_program_source_in => false, tdg_conflict_handling_in => qu_xmldom_import.tdg_skip, td_merge_in => false, harness_guid_for_merge_in => null, skip_new_test_cases_in => null -- Set program and test code owner. qu_xmldom_import.set_for_mapping( prog_owner_in => 'SCOTT', harn_owner_in => USER -- Perform the import. qu_xmldom_import.import_as_xml; The last API call performs an implicit commit. Exceptions can be raised by any of these calls, eg: ERROR at line 1: ORA-31011: XML parsing failed ORA-19202: Error occurred in XML processing LPX-00225: end-element tag "QCTO_EXPORT_HEADER" does not match start-element tag "QCTO_EXPORT_HEADERx" Error at line 19 ORA-06512: at "XDB.DBMS_XSLPROCESSOR", line 974 ORA-06512: at "XDB.DBMS_XSLPROCESSOR", line 1002 ORA-06512: at "QCTO200B5.QU_XMLDOM_IMPORT", line 554 ORA-06512: at "QCTO200B5.QU_XMLDOM_IMPORT", line 576 ORA-06512: at "QCTO200B5.QU_XMLDOM_IMPORT", line 914 ORA-06512: at "QCTO200B5.QU_XMLDOM_IMPORT", line 974* ORA-06512: at line 3 Deleting Test Definitions Let's say that you no longer need a TD that you created earlier. You then need to make sure that this change is deployed to your CI environments. There are two ways of accomplishing this: Calling CT with specific command line options: T=<test_definition_name> and Delete. You need to be aware that the exit code of the application is non-zero if the TD isn't found but that's to be expected as you get the same when trying to delete a file in the file system with an OS command. Using one of the PLSQL APIs provided: o Find the UNIVERSAL_ID in QU_HARNESS table for applicable NAMETEST_NAMEPROGRAM_OWNERPROGRAM_NAME and then call the following procedure in QU_HARNESS_XP:

5 5 procedure del( universal_id_in in qu_harness_tp.universal_id_t, rows_out out pls_integer, handle_error_in in boolean := true, del_test_pkg_in in boolean default false, part_of_import_in in boolean default false o Use another of the DEL or DEL_% subprograms in QU_HARNESS_XP with parameters appropriate for your requirements. However, I would argue that it's not necessary to delete the TD specifically, since -- in my view -- the XML file containing the TD (produced by exporting it from CT) must always reflect the current state of the TD in your revision control system, such that you: Avoid problems when somebody manually deploys it to a given environment. Don't have to program specific rules into your CI scripts for handling removal of TDs -- you can always deploy the latest version of any given TD XML (unless you start the CI deployment by removing all TDs in a "pre burner" step). You can remove all the TDs in a given repository through the following anonymous block: declare n pls_integer; for td in ( select universal_id, name, test_name from qu_harness where name!= 'IMPLICIT_' ) loop dbms_output.put_line('deleting TD "' td.test_name '"...' qu_harness_xp.del( universal_id_in => td.universal_id, rows_out => n, handle_error_in => true, del_test_pkg_in => true, part_of_import_in => false dbms_output.put_line('done. ' n ' row(s) deleted.' exception when others then dbms_output.put_line(sqlerrm end loop; commit; (omit using TEST_NAME if you're using CT or earlier as that's a new feature of CT 2.0.0). You can remove all the test cases for a given TD in various different ways, including: Edit the XML file and remove all TEST_CASES fragments. Use Test Editor to remove all test cases and export again. Use Test Builder to remove all test cases and export again. You then need to commitcheck in the new XML file to your revision control system. This way, you still have the TD in the CT repository but it doesn't have any test cases defined. Arguably, it would be better to get rid of the TD but you can't do this through the XML file. Perhaps Quest should

6 consider a mean of doing so through the XML format, eg by looking for an optional element QCTO_EXPORTTEST_DEFINITIONSQU_HARNESSDELETE with a value of "Y". 6