TDL. bridging the gap between specifications and testing. Dr. Gusztáv Adamis Dr. GyÖrgy réthy Ericsson Hungary Test Solutions and Competence Center

Transcription

1 TDL bridging the gap between specifications and testing Dr. Gusztáv Adamis Dr. GyÖrgy réthy Ericsson Hungary Test Solutions and Competence Center

2 Contents Problem definition TDL - the new ETSI test language Role of TDL in testing Activities on TDL Ericsson Modeling Days 2016 Ericsson AB Page 2

3 Test Development Manual workflow Requirement and System specification Feature description, IW Description etc. Ericsson Modeling Days 2016 Ericsson AB Page 3

4 Test Development Manual workflow Test design Done at the test execution language level Test cases API (product specific) Test Framework Test tool (IDE, execution environment) Ericsson Modeling Days 2016 Ericsson AB Page 4

5 Abstraction Gap Requirement management/ system specification Test design/execution Test cases Test Framework Ericsson Modeling Days 2016 Ericsson AB Page 5

6 Test Development MBT workflow Orig FSM public void reselec.on(string p_legid) { vg_sip_parameters.withoutringing = true; mgcfdialog = new SIPCallTerm(mgcfOut, mgcfin); mgcfdialog.legid = "mgcf1"; mgcfdialog.teardown = false; mgcfdialog.start("mgcf1"); if (vg_e_params.mgcf2behavior == "serviceunavailable") mgcfdialog.finalresp = 503; } Test harness in destination language, e.g. Ericsson Modeling Days 2016 Ericsson AB Page 6

7 The Abstraction Gap MBT requires knowledge on Modeling level Programming level Ericsson Modeling Days 2016 Ericsson AB Page 7

8 We need a language that Can describe the test cases Both generated and manually designed at the abstraction level of the model Can be used also by nonprogrammers Enables incremental development Standardised From system specification to test case design level Can be used by different tools Has a graphical representation TDL Test Description Language Ericsson Modeling Days 2016 Ericsson AB Page 8

9 TDL Meta-model Well-defined language constructs UML MOF-based description OCL constraints Makes it possible to develop different domainspecific concrete syntaxes Ericsson Modeling Days 2016 Ericsson AB Page 9

10 Structure of TDL Test Data TDL meta-model Time, Timers Foundation Data Time Test Configuration Test Configuration Test Behaviour Test Behaviour Test Description Test Behaviour Elements Test Objective Including test-specific constructs, like alternative default verdict Test Objectives Ericsson Modeling Days 2016 Ericsson AB Page 10

11 TDL Graphical Syntax Standardised by ETSI Similar approach to UML SD But new symbols to new constructs Graphical symbols Formal description of the contained text Ericsson Modeling Days 2016 Ericsson AB Page 11

12 TDL Graphical Syntax Data Specification Ericsson Modeling Days 2016 Ericsson AB Page 12

13 TDL Graphical Syntax Test Configuration Ericsson Modeling Days 2016 Ericsson AB Page 13

14 TDL Graphical Syntax Test Behaviour Ericsson Modeling Days 2016 Ericsson AB Page 14

15 Transfer Syntax Goals: Interoperability between tools Interoperability between different concrete syntaxes XMI (XML Metadata Interchange) To serialize the meta-model Syntactical check possible Ericsson Modeling Days 2016 Ericsson AB Page 15

16 Incremental Design UE Network Connection Establishment Data Transfer Ericsson Modeling Days 2016 Ericsson AB Page 16

17 Incremental Design UE Network Request Accept Data Transfer Ericsson Modeling Days 2016 Ericsson AB Page 17

18 Incremental Design UE Network Request (ID:=1, Type:=Voice) Accept (ID:=1) Data Transfer Ericsson Modeling Days 2016 Ericsson AB Page 18

19 Incremental Design UE Network Request (ID:=1, Type:=Voice) Accept (ID:=1) Deny Data Transfer Ericsson Modeling Days 2016 Ericsson AB Page 19

20 Incremental Design UE Network Data Resource Mapping TTCN_Data ResourceURI Data.ttcn Request (ID:=1, Type:=Voice) Accept (ID:=1) Deny Data Transfer Ericsson Modeling Days 2016 Ericsson AB Page 20

21 Incremental Design UE Node 1 Node 2 Data Resource Mapping TTCN_Data ResourceURI Data.ttcn Request (ID:=1, Type:=Voice) Accept (ID:=1) Deny Request (Type:=Voice) OK NOK Data Transfer Ericsson Modeling Days 2016 Ericsson AB Page 21

22 TDL in Test development Ericsson Modeling Days 2016 Ericsson AB Page 22

23 Activities on TDL At ETSI: Latest versions of TDL standards are published in 05/2016 See more at Tool Prototypes (will be open sourced) Reference TDL-GR viewer TDL XMI -> TDL GR Papyrus-based TDL editor TDL -> UML mapping Ericsson Modeling Days 2016 Ericsson AB Page 23

24 Activities on TDL At Ericsson TCC: Participation in all ETSI TDL activities Language development projects (STFs Specialized Task Force) TB MTS (approving the TDL standards and TDL STF requests) TDL Steering Group Prototype TDL GR editor integrated into Intuitive tool Working on TDL -> TTCN-3 M2M transformation With cooperation of Budapest University of Technology and Economics - Mapping of TDL to TTCN-3 - Prototype tool - The coming new ETSI STF will standardize the mapping Ericsson Modeling Days 2016 Ericsson AB Page 24

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