[#BloombergLP-bsls-ProtocolTest]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bsls.adoc[bsls]::ProtocolTest
:relfileprefix: ../../
:mrdocs:

Mechanism that tests protocol‐class concerns via `test*` methods and `operator‐>`.

== Synopsis

Declared in `<bsls_protocoltest.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class BSLS_TESTIMP>
class ProtocolTest;
----

== Description

This mechanism class template provides the implementation of protocol testing concerns via `test*` methods (for non‐method concerns), and via `operator‐>` (for method concerns). The `BSLS_TESTIMP` template parameter is required to be a class derived from `ProtocolTestImp` that provides test implementations of all protocol methods.

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bsls/ProtocolTest/2constructor.adoc[`ProtocolTest`]         [.small]#[constructor]#
| Construct a `ProtocolTest` object.
| xref:BloombergLP/bsls/ProtocolTest/failures.adoc[`failures`] 
| Return the number of failures encountered during testing of a protocol class. The returned value is 0 if all tests succeeded, or no tests ran.
| xref:BloombergLP/bsls/ProtocolTest/lastStatus.adoc[`lastStatus`] 
| Return `true` if the last test completed successfully (or no test has yes completed) and `false` otherwise.
| xref:BloombergLP/bsls/ProtocolTest/method.adoc[`method`] 
| Return a `BSLS_TESTIMP` object to perform testing of a specific method.
| xref:BloombergLP/bsls/ProtocolTest/testAbstract.adoc[`testAbstract`] 
| Return whether the protocol class being tested is abstract.
| xref:BloombergLP/bsls/ProtocolTest/testNoDataMembers.adoc[`testNoDataMembers`] 
| Return whether the protocol class being tested contains no data fields.
| xref:BloombergLP/bsls/ProtocolTest/testVirtualDestructor.adoc[`testVirtualDestructor`] 
| Return whether the protocol class being tested has a virtual destructor.
|===



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