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| -rw-r--r-- | subplot.md | 60 |
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@@ -1811,6 +1811,66 @@ This is another embedded file, and has the same name in uppercase. ``` ~~~~ +## Steps must match bindings + +Subplot permits the binding author to define arbitrarily complex regular +expressions for binding matches. In order to ensure that associating steps +to bindings is both reliable and tractable, a step must match _exactly one_ +binding. + +```{#badbindings.yaml .file .yaml} +- given: a binding + function: a_binding +- given: a (?:broken)? binding + function: a_broken_binding + regex: true +``` + +### Steps which do not match bindings do not work + +~~~~{#nobinding.md .file .markdown} +--- +title: No bindings available +bindings: +- badbindings.yaml +... +# Broken scenario because step has no binding + +```scenario +given a missing binding +then nothing works +``` +~~~~ + +```scenario +given file nobinding.md +and file badbindings.yaml +when I try to run sp-codegen --run nobinding.md -o test.py +then exit code is non-zero +``` + +### Steps which match more than one binding do not work + +~~~~{#twobindings.md .file .markdown} +--- +title: Two bindings match +bindings: +- badbindings.yaml +... +# Broken scenario because step has two possible bindings + +```scenario +given a binding +``` +~~~~ + +```scenario +given file twobindings.md +and file badbindings.yaml +when I try to run sp-codegen --run twobindings.md -o test.py +then exit code is non-zero +``` + ## Embedded graphs |