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// Google Mock - a framework for writing C++ mock classes.
//
// This file implements some commonly used cardinalities. More
// cardinalities can be defined by the user implementing the
// CardinalityInterface interface if necessary.
// GOOGLETEST_CM0002 DO NOT DELETE
#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_CARDINALITIES_H_
#define GMOCK_INCLUDE_GMOCK_GMOCK_CARDINALITIES_H_
#include <limits.h>
#include <ostream> // NOLINT
#include "gmock/internal/gmock-port.h"
#include "gtest/gtest.h"
GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
/* class A needs to have dll-interface to be used by clients of class B */)
namespace testing {
// To implement a cardinality Foo, define:
// 1. a class FooCardinality that implements the
// CardinalityInterface interface, and
// 2. a factory function that creates a Cardinality object from a
// const FooCardinality*.
//
// The two-level delegation design follows that of Matcher, providing
// consistency for extension developers. It also eases ownership
// management as Cardinality objects can now be copied like plain values.
// The implementation of a cardinality.
class CardinalityInterface {
public:
virtual ~CardinalityInterface() {}
// Conservative estimate on the lower/upper bound of the number of
// calls allowed.
virtual int ConservativeLowerBound() const { return 0; }
virtual int ConservativeUpperBound() const { return INT_MAX; }
// Returns true iff call_count calls will satisfy this cardinality.
virtual bool IsSatisfiedByCallCount(int call_count) const = 0;
// Returns true iff call_count calls will saturate this cardinality.
virtual bool IsSaturatedByCallCount(int call_count) const = 0;
// Describes self to an ostream.
virtual void DescribeTo(::std::ostream* os) const = 0;
};
// A Cardinality is a copyable and IMMUTABLE (except by assignment)
// object that specifies how many times a mock function is expected to
// be called. The implementation of Cardinality is just a linked_ptr
// to const CardinalityInterface, so copying is fairly cheap.
// Don't inherit from Cardinality!
class GTEST_API_ Cardinality {
public:
// Constructs a null cardinality. Needed for storing Cardinality
// objects in STL containers.
Cardinality() {}
// Constructs a Cardinality from its implementation.
explicit Cardinality(const CardinalityInterface* impl) : impl_(impl) {}
// Conservative estimate on the lower/upper bound of the number of
// calls allowed.
int ConservativeLowerBound() const { return impl_->ConservativeLowerBound(); }
int ConservativeUpperBound() const { return impl_->ConservativeUpperBound(); }
// Returns true iff call_count calls will satisfy this cardinality.
bool IsSatisfiedByCallCount(int call_count) const {
return impl_->IsSatisfiedByCallCount(call_count);
}
// Returns true iff call_count calls will saturate this cardinality.
bool IsSaturatedByCallCount(int call_count) const {
return impl_->IsSaturatedByCallCount(call_count);
}
// Returns true iff call_count calls will over-saturate this
// cardinality, i.e. exceed the maximum number of allowed calls.
bool IsOverSaturatedByCallCount(int call_count) const {
return impl_->IsSaturatedByCallCount(call_count) &&
!impl_->IsSatisfiedByCallCount(call_count);
}
// Describes self to an ostream
void DescribeTo(::std::ostream* os) const { impl_->DescribeTo(os); }
// Describes the given actual call count to an ostream.
static void DescribeActualCallCountTo(int actual_call_count,
::std::ostream* os);
private:
internal::linked_ptr<const CardinalityInterface> impl_;
};
// Creates a cardinality that allows at least n calls.
GTEST_API_ Cardinality AtLeast(int n);
// Creates a cardinality that allows at most n calls.
GTEST_API_ Cardinality AtMost(int n);
// Creates a cardinality that allows any number of calls.
GTEST_API_ Cardinality AnyNumber();
// Creates a cardinality that allows between min and max calls.
GTEST_API_ Cardinality Between(int min, int max);
// Creates a cardinality that allows exactly n calls.
GTEST_API_ Cardinality Exactly(int n);
// Creates a cardinality from its implementation.
inline Cardinality MakeCardinality(const CardinalityInterface* c) {
return Cardinality(c);
}
} // namespace testing
GTEST_DISABLE_MSC_WARNINGS_POP_() // 4251
#endif // GMOCK_INCLUDE_GMOCK_GMOCK_CARDINALITIES_H_