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TDL: Test Description Language for Effective Test Specification

TDL is a test-specific language designed for black-box tests, focusing on interactions at system under test (SUT) interfaces. It describes interaction flow with declarative constraints, providing a simple type system. It supports graphical, tabular, and textual representations, aiding test engineers. TDL enables abstract test descriptions and user scenario mapping, facilitating test specification creation and review. It allows domain experts to write tests and offers tool-supported analysis for inconsistencies.

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TDL: Test Description Language for Effective Test Specification

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  1. TDL – Added Value Dr. Andreas Ulrich, Siemens AG

  2. TDL is… • Test • Specifically designed for describing black-box tests • Focusing on interactions at SUT interfaces:message-passing, procedure-based, shared variables • Description • Description of interaction flow with declarative (timing) constraints, i.e. focus on what a test shall do, not how • Simple type system; everything is a string/enumeration • Language • Common concepts, various representation formats: • Graphical: constrains and extends UML sequence diagrams • Tabular: supporting document-based approaches (Word/Excel) • Textual: for tool support and freaks • Supports end users (test engineers) • Must be combined with a test execution framework

  3. TDL is not… • An exchange format for tests ATX, OTX, TestML • A common testing framework with varying views (logical/technical) and various notations  UTP • A detailed language that contains everything to produce executable tests  TTCN-3 GFT, UTP • A language for describing mere test purposes  TPLan

  4. Applications for TDL • Provision of abstract descriptions of tests • Description of tests as (user) scenarios • Enable tracing of requirements down to tests • Support of test specification creation and review • Enable domain experts to write and understand the tests • Automatic, tool-supported analysis, e.g. for inconsistencies • Intermediate representation of tests • Captures the essence of a test of user scenarios, e.g. simple expression of concurrent and nested user interactions • Support for reverse engineering of tests from recorded executions

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