This mechanism class template is a base class for a test implementation of a protocol class defined by the BSLS_PROTOCOL template parameter. Its purpose is to reduce the boilerplate test code required to verify that derived virtual methods are called. It provides markDone member functions one of which should be called from each method of the protocol class test implementation to indicate that the virtual method is correctly overridden. It also overloads operator‐> to serve as a proxy to BSLS_PROTOCOL and detect when BSLS_PROTOCOL methods are called.

Synopsis

Declared in <bsls_protocoltest.h>

template<class BSLS_PROTOCOL>
class ProtocolTestImp
    : public BSLS_PROTOCOL

Base Classes

Name

Description

BSLS_PROTOCOL

Type Aliases

Name

Description

ProtocolType

Protocol type under test by this implementation.

Member Functions

Name

Description

ProtocolTestImp [constructor]

Create an object of the ProtocolTestImp class.

~ProtocolTestImp [destructor]

Destroy this object and check the status of the test execution (success or failure). On test failure, report it to ProtocolTest_Status.

markDone

Return a proxy object convertible to any value or pointer type. Derived classed should call this method from their implementations of protocol virtual methods to indicate that virtual methods were overridden correctly.

markDoneRef

Return a proxy object convertible to any reference type. Derived classed should call this method from their implementations of protocol virtual methods to indicate that virtual methods were overridden correctly.

markDoneVal

Return the specified value. Derived classes should call this method from their implementations of protocol virtual methods to indicate that virtual methods were overridden correctly.

markEnter

Mark this object as entered for the purpose of calling a protocol method. The entered property is tested in the destructor to check for test failures (i.e., if entered == false then the test cannot fail since it never ran). Note that markEnter and markDone calls have to be paired for a protocol‐method‐call test to succeed.

operator‐>

Dereference this object as if it were a pointer to BSLS_PROTOCOL in order to call a method on BSLS_PROTOCOL. Also mark this object as entered for the purpose of calling a protocol method.

operator‐>

Dereference this object as if it were a const BSLS_PROTOCOL *s in order to call a const method on BSLS_PROTOCOL. Also mark this object as entered for the purpose of calling a protocol method.

setTestStatus

Connect this protocol test object with the specified testStatus object, which will be used for test failure reporting.

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