[Home](./index.md) > [@contract-case/case-boundary](./case-boundary.md) ## case-boundary package This is the \[JSii\](https://aws.github.io/jsii/user-guides/lib-author/toolchain/jsii/) layer that is the exported interface for ContractCase. Don't depend on this directly unless you are writing a custom wrapper for ContractCase. ## Classes | Class | Description | | ------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------- | | [BoundaryContractDefiner](./case-boundary.boundarycontractdefiner.md) | A BoundaryContractDefiner allows defining contracts | | [BoundaryContractVerifier](./case-boundary.boundarycontractverifier.md) | A BoundaryContractDefiner allows verifying contracts | | [BoundaryCrashMessage](./case-boundary.boundarycrashmessage.md) | Contains constants for the crash messages | | [BoundaryFailure](./case-boundary.boundaryfailure.md) | This indicates a failure. Use BoundaryFailureKindConstants to determine what type of failure it is. | | [BoundaryFailureKindConstants](./case-boundary.boundaryfailurekindconstants.md) | Constants to use for determining what kind of failure you have | | [BoundaryResultTypeConstants](./case-boundary.boundaryresulttypeconstants.md) | Use these constants to determine what type of result a BoundaryResult is. | | [BoundarySuccess](./case-boundary.boundarysuccess.md) | This indicates that the result was successful | | [BoundarySuccessWithAny](./case-boundary.boundarysuccesswithany.md) |

This indicates a success with any arbitrary payload

The calling method usually expects only one type of payload

| | [BoundarySuccessWithMap](./case-boundary.boundarysuccesswithmap.md) | This indicates a success returning a map of strings to arbitrary payloads | | [ConfigLogLevelConstants](./case-boundary.configloglevelconstants.md) | Convenience class to hold the values for LogLevel so that DSL layers don't need to know the actual value | | [ConfigPublishConstants](./case-boundary.configpublishconstants.md) | Convenience class to hold the values for the publish setting so that clients don't need to know the strings | ## Abstract Classes | Abstract Class | Description | | --------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [BoundaryResult](./case-boundary.boundaryresult.md) | Supertype for all methods that return results. Use one of BoundarySuccess, BoundaryFailure, or one of the specialised BoundarySuccessWith\* return types as appropriate. See the documentation for the method you're implementing for more information. | | [BoundaryStateHandler](./case-boundary.boundarystatehandler.md) | An interface for a state handler that only has setup | ## Interfaces | Interface | Description | | --------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [BoundaryMockDefinition](./case-boundary.boundarymockdefinition.md) | This interface describes a Mock Definition, when viewing through jsii | | [ContractCaseBoundaryConfig](./case-boundary.contractcaseboundaryconfig.md) | Configure a ContractCase run. See the \[configuration documentation\](https://case.contract-testing.io/docs/reference/configuring) for more details. | | [ICombinedPrinter](./case-boundary.icombinedprinter.md) | A convenience interface that combines result printing and log printing | | [IInvokeCoreTest](./case-boundary.iinvokecoretest.md) | Interface to tell ContractCase to run the test indicated in a call to an IRunTestCallback | | [ILogPrinter](./case-boundary.ilogprinter.md) | Implement this interface to give ContractCase a way to print logs in your target language. Most platforms will want to print to standard out, but some might need to log to a file or otherwise collate the logs. | | [IResultPrinter](./case-boundary.iresultprinter.md) | Interface for printing results | | [IRunTestCallback](./case-boundary.iruntestcallback.md) | This interface allows the DSL layer to invoke the test. If your test runner supports programmatically running different tests, then use this interface to tell a BoundaryContractVerifier how to call back to your DSL with a test name | | [ITriggerFunction](./case-boundary.itriggerfunction.md) | Interface called by ContractCase to invoke user's test code. | | [PrintableMatchError](./case-boundary.printablematcherror.md) | Data class to hold data to print a message error during matching | | [PrintableMessageError](./case-boundary.printablemessageerror.md) | Data class to hold data to print a message error | | [PrintableTestTitle](./case-boundary.printabletesttitle.md) | Data class to hold data for a test title print line | | [UserNamePassword](./case-boundary.usernamepassword.md) | Describes a username and password | ## Type Aliases | Type Alias | Description | | ------------------------------------------------------------------------- | ------------------------------------------------------------ | | [BoundaryAnyMatcher](./case-boundary.boundaryanymatcher.md) | This type is used for any matcher, when viewing through jsii | | [BoundaryAnyMockDescriptor](./case-boundary.boundaryanymockdescriptor.md) | This type is used for any matcher, when viewing through jsii | | [BoundaryAnyState](./case-boundary.boundaryanystate.md) | This type is used for any matcher, when viewing through jsii |