googletest/include/gmock/gmock-spec-builders.h

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// Copyright 2007, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Author: wan@google.com (Zhanyong Wan)
// Google Mock - a framework for writing C++ mock classes.
//
// This file implements the ON_CALL() and EXPECT_CALL() macros.
//
// A user can use the ON_CALL() macro to specify the default action of
// a mock method. The syntax is:
//
// ON_CALL(mock_object, Method(argument-matchers))
// .WithArguments(multi-argument-matcher)
// .WillByDefault(action);
//
// where the .WithArguments() clause is optional.
//
// A user can use the EXPECT_CALL() macro to specify an expectation on
// a mock method. The syntax is:
//
// EXPECT_CALL(mock_object, Method(argument-matchers))
// .WithArguments(multi-argument-matchers)
// .Times(cardinality)
// .InSequence(sequences)
// .WillOnce(action)
// .WillRepeatedly(action)
// .RetiresOnSaturation();
//
// where all clauses are optional, .InSequence() and .WillOnce() can
// appear any number of times, and .Times() can be omitted only if
// .WillOnce() or .WillRepeatedly() is present.
#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_SPEC_BUILDERS_H_
#define GMOCK_INCLUDE_GMOCK_GMOCK_SPEC_BUILDERS_H_
#include <map>
#include <set>
#include <sstream>
#include <string>
#include <vector>
#include <gmock/gmock-actions.h>
#include <gmock/gmock-cardinalities.h>
#include <gmock/gmock-matchers.h>
#include <gmock/gmock-printers.h>
#include <gmock/internal/gmock-internal-utils.h>
#include <gmock/internal/gmock-port.h>
#include <gtest/gtest.h>
namespace testing {
// Anything inside the 'internal' namespace IS INTERNAL IMPLEMENTATION
// and MUST NOT BE USED IN USER CODE!!!
namespace internal {
template <typename F>
class FunctionMocker;
// Base class for expectations.
class ExpectationBase;
// Helper class for testing the Expectation class template.
class ExpectationTester;
// Base class for function mockers.
template <typename F>
class FunctionMockerBase;
// Protects the mock object registry (in class Mock), all function
// mockers, and all expectations.
//
// The reason we don't use more fine-grained protection is: when a
// mock function Foo() is called, it needs to consult its expectations
// to see which one should be picked. If another thread is allowed to
// call a mock function (either Foo() or a different one) at the same
// time, it could affect the "retired" attributes of Foo()'s
// expectations when InSequence() is used, and thus affect which
// expectation gets picked. Therefore, we sequence all mock function
// calls to ensure the integrity of the mock objects' states.
extern Mutex g_gmock_mutex;
// Abstract base class of FunctionMockerBase. This is the
// type-agnostic part of the function mocker interface. Its pure
// virtual methods are implemented by FunctionMockerBase.
class UntypedFunctionMockerBase {
public:
virtual ~UntypedFunctionMockerBase() {}
// Verifies that all expectations on this mock function have been
// satisfied. Reports one or more Google Test non-fatal failures
// and returns false if not.
// L >= g_gmock_mutex
virtual bool VerifyAndClearExpectationsLocked() = 0;
// Clears the ON_CALL()s set on this mock function.
// L >= g_gmock_mutex
virtual void ClearDefaultActionsLocked() = 0;
}; // class UntypedFunctionMockerBase
// This template class implements a default action spec (i.e. an
// ON_CALL() statement).
template <typename F>
class DefaultActionSpec {
public:
typedef typename Function<F>::ArgumentTuple ArgumentTuple;
typedef typename Function<F>::ArgumentMatcherTuple ArgumentMatcherTuple;
// Constructs a DefaultActionSpec object from the information inside
// the parenthesis of an ON_CALL() statement.
DefaultActionSpec(const char* file, int line,
const ArgumentMatcherTuple& matchers)
: file_(file),
line_(line),
matchers_(matchers),
// By default, extra_matcher_ should match anything. However,
// we cannot initialize it with _ as that triggers a compiler
// bug in Symbian's C++ compiler (cannot decide between two
// overloaded constructors of Matcher<const ArgumentTuple&>).
extra_matcher_(A<const ArgumentTuple&>()),
last_clause_(NONE) {
}
// Where in the source file was the default action spec defined?
const char* file() const { return file_; }
int line() const { return line_; }
// Implements the .WithArguments() clause.
DefaultActionSpec& WithArguments(const Matcher<const ArgumentTuple&>& m) {
// Makes sure this is called at most once.
ExpectSpecProperty(last_clause_ < WITH_ARGUMENTS,
".WithArguments() cannot appear "
"more than once in an ON_CALL().");
last_clause_ = WITH_ARGUMENTS;
extra_matcher_ = m;
return *this;
}
// Implements the .WillByDefault() clause.
DefaultActionSpec& WillByDefault(const Action<F>& action) {
ExpectSpecProperty(last_clause_ < WILL_BY_DEFAULT,
".WillByDefault() must appear "
"exactly once in an ON_CALL().");
last_clause_ = WILL_BY_DEFAULT;
ExpectSpecProperty(!action.IsDoDefault(),
"DoDefault() cannot be used in ON_CALL().");
action_ = action;
return *this;
}
// Returns true iff the given arguments match the matchers.
bool Matches(const ArgumentTuple& args) const {
return TupleMatches(matchers_, args) && extra_matcher_.Matches(args);
}
// Returns the action specified by the user.
const Action<F>& GetAction() const {
AssertSpecProperty(last_clause_ == WILL_BY_DEFAULT,
".WillByDefault() must appear exactly "
"once in an ON_CALL().");
return action_;
}
private:
// Gives each clause in the ON_CALL() statement a name.
enum Clause {
// Do not change the order of the enum members! The run-time
// syntax checking relies on it.
NONE,
WITH_ARGUMENTS,
WILL_BY_DEFAULT,
};
// Asserts that the ON_CALL() statement has a certain property.
void AssertSpecProperty(bool property, const string& failure_message) const {
Assert(property, file_, line_, failure_message);
}
// Expects that the ON_CALL() statement has a certain property.
void ExpectSpecProperty(bool property, const string& failure_message) const {
Expect(property, file_, line_, failure_message);
}
// The information in statement
//
// ON_CALL(mock_object, Method(matchers))
// .WithArguments(multi-argument-matcher)
// .WillByDefault(action);
//
// is recorded in the data members like this:
//
// source file that contains the statement => file_
// line number of the statement => line_
// matchers => matchers_
// multi-argument-matcher => extra_matcher_
// action => action_
const char* file_;
int line_;
ArgumentMatcherTuple matchers_;
Matcher<const ArgumentTuple&> extra_matcher_;
Action<F> action_;
// The last clause in the ON_CALL() statement as seen so far.
// Initially NONE and changes as the statement is parsed.
Clause last_clause_;
}; // class DefaultActionSpec
// Possible reactions on uninteresting calls.
enum CallReaction {
ALLOW,
WARN,
FAIL,
};
} // namespace internal
// Utilities for manipulating mock objects.
class Mock {
public:
// The following public methods can be called concurrently.
// Tells Google Mock to ignore mock_obj when checking for leaked
// mock objects.
static void AllowLeak(const void* mock_obj);
// Verifies and clears all expectations on the given mock object.
// If the expectations aren't satisfied, generates one or more
// Google Test non-fatal failures and returns false.
static bool VerifyAndClearExpectations(void* mock_obj);
// Verifies all expectations on the given mock object and clears its
// default actions and expectations. Returns true iff the
// verification was successful.
static bool VerifyAndClear(void* mock_obj);
private:
// Needed for a function mocker to register itself (so that we know
// how to clear a mock object).
template <typename F>
friend class internal::FunctionMockerBase;
template <typename M>
friend class NiceMock;
template <typename M>
friend class StrictMock;
// Tells Google Mock to allow uninteresting calls on the given mock
// object.
// L < g_gmock_mutex
static void AllowUninterestingCalls(const void* mock_obj);
// Tells Google Mock to warn the user about uninteresting calls on
// the given mock object.
// L < g_gmock_mutex
static void WarnUninterestingCalls(const void* mock_obj);
// Tells Google Mock to fail uninteresting calls on the given mock
// object.
// L < g_gmock_mutex
static void FailUninterestingCalls(const void* mock_obj);
// Tells Google Mock the given mock object is being destroyed and
// its entry in the call-reaction table should be removed.
// L < g_gmock_mutex
static void UnregisterCallReaction(const void* mock_obj);
// Returns the reaction Google Mock will have on uninteresting calls
// made on the given mock object.
// L < g_gmock_mutex
static internal::CallReaction GetReactionOnUninterestingCalls(
const void* mock_obj);
// Verifies that all expectations on the given mock object have been
// satisfied. Reports one or more Google Test non-fatal failures
// and returns false if not.
// L >= g_gmock_mutex
static bool VerifyAndClearExpectationsLocked(void* mock_obj);
// Clears all ON_CALL()s set on the given mock object.
// L >= g_gmock_mutex
static void ClearDefaultActionsLocked(void* mock_obj);
// Registers a mock object and a mock method it owns.
// L < g_gmock_mutex
static void Register(const void* mock_obj,
internal::UntypedFunctionMockerBase* mocker);
// Tells Google Mock where in the source code mock_obj is used in an
// ON_CALL or EXPECT_CALL. In case mock_obj is leaked, this
// information helps the user identify which object it is.
// L < g_gmock_mutex
static void RegisterUseByOnCallOrExpectCall(
const void* mock_obj, const char* file, int line);
// Unregisters a mock method; removes the owning mock object from
// the registry when the last mock method associated with it has
// been unregistered. This is called only in the destructor of
// FunctionMockerBase.
// L >= g_gmock_mutex
static void UnregisterLocked(internal::UntypedFunctionMockerBase* mocker);
}; // class Mock
// Sequence objects are used by a user to specify the relative order
// in which the expectations should match. They are copyable (we rely
// on the compiler-defined copy constructor and assignment operator).
class Sequence {
public:
// Constructs an empty sequence.
Sequence()
: last_expectation_(
new internal::linked_ptr<internal::ExpectationBase>(NULL)) {}
// Adds an expectation to this sequence. The caller must ensure
// that no other thread is accessing this Sequence object.
void AddExpectation(
const internal::linked_ptr<internal::ExpectationBase>& expectation) const;
private:
// The last expectation in this sequence. We use a nested
// linked_ptr here because:
// - Sequence objects are copyable, and we want the copies to act
// as aliases. The outer linked_ptr allows the copies to co-own
// and share the same state.
// - An Expectation object is co-owned (via linked_ptr) by its
// FunctionMocker and its successors (other Expectation objects).
// Hence the inner linked_ptr.
internal::linked_ptr<internal::linked_ptr<internal::ExpectationBase> >
last_expectation_;
}; // class Sequence
// An object of this type causes all EXPECT_CALL() statements
// encountered in its scope to be put in an anonymous sequence. The
// work is done in the constructor and destructor. You should only
// create an InSequence object on the stack.
//
// The sole purpose for this class is to support easy definition of
// sequential expectations, e.g.
//
// {
// InSequence dummy; // The name of the object doesn't matter.
//
// // The following expectations must match in the order they appear.
// EXPECT_CALL(a, Bar())...;
// EXPECT_CALL(a, Baz())...;
// ...
// EXPECT_CALL(b, Xyz())...;
// }
//
// You can create InSequence objects in multiple threads, as long as
// they are used to affect different mock objects. The idea is that
// each thread can create and set up its own mocks as if it's the only
// thread. However, for clarity of your tests we recommend you to set
// up mocks in the main thread unless you have a good reason not to do
// so.
class InSequence {
public:
InSequence();
~InSequence();
private:
bool sequence_created_;
GTEST_DISALLOW_COPY_AND_ASSIGN_(InSequence); // NOLINT
} GMOCK_ATTRIBUTE_UNUSED_;
namespace internal {
// Points to the implicit sequence introduced by a living InSequence
// object (if any) in the current thread or NULL.
extern ThreadLocal<Sequence*> g_gmock_implicit_sequence;
// Base class for implementing expectations.
//
// There are two reasons for having a type-agnostic base class for
// Expectation:
//
// 1. We need to store collections of expectations of different
// types (e.g. all pre-requisites of a particular expectation, all
// expectations in a sequence). Therefore these expectation objects
// must share a common base class.
//
// 2. We can avoid binary code bloat by moving methods not depending
// on the template argument of Expectation to the base class.
//
// This class is internal and mustn't be used by user code directly.
class ExpectationBase {
public:
ExpectationBase(const char* file, int line);
virtual ~ExpectationBase();
// Where in the source file was the expectation spec defined?
const char* file() const { return file_; }
int line() const { return line_; }
// Returns the cardinality specified in the expectation spec.
const Cardinality& cardinality() const { return cardinality_; }
// Describes the source file location of this expectation.
void DescribeLocationTo(::std::ostream* os) const {
*os << file() << ":" << line() << ": ";
}
// Describes how many times a function call matching this
// expectation has occurred.
// L >= g_gmock_mutex
virtual void DescribeCallCountTo(::std::ostream* os) const = 0;
protected:
typedef std::set<linked_ptr<ExpectationBase>,
LinkedPtrLessThan<ExpectationBase> >
ExpectationBaseSet;
enum Clause {
// Don't change the order of the enum members!
NONE,
WITH_ARGUMENTS,
TIMES,
IN_SEQUENCE,
WILL_ONCE,
WILL_REPEATEDLY,
RETIRES_ON_SATURATION,
};
// Asserts that the EXPECT_CALL() statement has the given property.
void AssertSpecProperty(bool property, const string& failure_message) const {
Assert(property, file_, line_, failure_message);
}
// Expects that the EXPECT_CALL() statement has the given property.
void ExpectSpecProperty(bool property, const string& failure_message) const {
Expect(property, file_, line_, failure_message);
}
// Explicitly specifies the cardinality of this expectation. Used
// by the subclasses to implement the .Times() clause.
void SpecifyCardinality(const Cardinality& cardinality);
// Returns true iff the user specified the cardinality explicitly
// using a .Times().
bool cardinality_specified() const { return cardinality_specified_; }
// Sets the cardinality of this expectation spec.
void set_cardinality(const Cardinality& cardinality) {
cardinality_ = cardinality;
}
// The following group of methods should only be called after the
// EXPECT_CALL() statement, and only when g_gmock_mutex is held by
// the current thread.
// Retires all pre-requisites of this expectation.
// L >= g_gmock_mutex
void RetireAllPreRequisites();
// Returns true iff this expectation is retired.
// L >= g_gmock_mutex
bool is_retired() const {
g_gmock_mutex.AssertHeld();
return retired_;
}
// Retires this expectation.
// L >= g_gmock_mutex
void Retire() {
g_gmock_mutex.AssertHeld();
retired_ = true;
}
// Returns true iff this expectation is satisfied.
// L >= g_gmock_mutex
bool IsSatisfied() const {
g_gmock_mutex.AssertHeld();
return cardinality().IsSatisfiedByCallCount(call_count_);
}
// Returns true iff this expectation is saturated.
// L >= g_gmock_mutex
bool IsSaturated() const {
g_gmock_mutex.AssertHeld();
return cardinality().IsSaturatedByCallCount(call_count_);
}
// Returns true iff this expectation is over-saturated.
// L >= g_gmock_mutex
bool IsOverSaturated() const {
g_gmock_mutex.AssertHeld();
return cardinality().IsOverSaturatedByCallCount(call_count_);
}
// Returns true iff all pre-requisites of this expectation are satisfied.
// L >= g_gmock_mutex
bool AllPrerequisitesAreSatisfied() const;
// Adds unsatisfied pre-requisites of this expectation to 'result'.
// L >= g_gmock_mutex
void FindUnsatisfiedPrerequisites(ExpectationBaseSet* result) const;
// Returns the number this expectation has been invoked.
// L >= g_gmock_mutex
int call_count() const {
g_gmock_mutex.AssertHeld();
return call_count_;
}
// Increments the number this expectation has been invoked.
// L >= g_gmock_mutex
void IncrementCallCount() {
g_gmock_mutex.AssertHeld();
call_count_++;
}
private:
friend class ::testing::Sequence;
friend class ::testing::internal::ExpectationTester;
template <typename Function>
friend class Expectation;
// This group of fields are part of the spec and won't change after
// an EXPECT_CALL() statement finishes.
const char* file_; // The file that contains the expectation.
int line_; // The line number of the expectation.
// True iff the cardinality is specified explicitly.
bool cardinality_specified_;
Cardinality cardinality_; // The cardinality of the expectation.
// The immediate pre-requisites of this expectation. We use
// linked_ptr in the set because we want an Expectation object to be
// co-owned by its FunctionMocker and its successors. This allows
// multiple mock objects to be deleted at different times.
ExpectationBaseSet immediate_prerequisites_;
// This group of fields are the current state of the expectation,
// and can change as the mock function is called.
int call_count_; // How many times this expectation has been invoked.
bool retired_; // True iff this expectation has retired.
}; // class ExpectationBase
// Impements an expectation for the given function type.
template <typename F>
class Expectation : public ExpectationBase {
public:
typedef typename Function<F>::ArgumentTuple ArgumentTuple;
typedef typename Function<F>::ArgumentMatcherTuple ArgumentMatcherTuple;
typedef typename Function<F>::Result Result;
Expectation(FunctionMockerBase<F>* owner, const char* file, int line,
const ArgumentMatcherTuple& m)
: ExpectationBase(file, line),
owner_(owner),
matchers_(m),
// By default, extra_matcher_ should match anything. However,
// we cannot initialize it with _ as that triggers a compiler
// bug in Symbian's C++ compiler (cannot decide between two
// overloaded constructors of Matcher<const ArgumentTuple&>).
extra_matcher_(A<const ArgumentTuple&>()),
repeated_action_specified_(false),
repeated_action_(DoDefault()),
retires_on_saturation_(false),
last_clause_(NONE),
action_count_checked_(false) {}
virtual ~Expectation() {
// Check the validity of the action count if it hasn't been done
// yet (for example, if the expectation was never used).
CheckActionCountIfNotDone();
}
// Implements the .WithArguments() clause.
Expectation& WithArguments(const Matcher<const ArgumentTuple&>& m) {
if (last_clause_ == WITH_ARGUMENTS) {
ExpectSpecProperty(false,
".WithArguments() cannot appear "
"more than once in an EXPECT_CALL().");
} else {
ExpectSpecProperty(last_clause_ < WITH_ARGUMENTS,
".WithArguments() must be the first "
"clause in an EXPECT_CALL().");
}
last_clause_ = WITH_ARGUMENTS;
extra_matcher_ = m;
return *this;
}
// Implements the .Times() clause.
Expectation& Times(const Cardinality& cardinality) {
if (last_clause_ ==TIMES) {
ExpectSpecProperty(false,
".Times() cannot appear "
"more than once in an EXPECT_CALL().");
} else {
ExpectSpecProperty(last_clause_ < TIMES,
".Times() cannot appear after "
".InSequence(), .WillOnce(), .WillRepeatedly(), "
"or .RetiresOnSaturation().");
}
last_clause_ = TIMES;
ExpectationBase::SpecifyCardinality(cardinality);
return *this;
}
// Implements the .Times() clause.
Expectation& Times(int n) {
return Times(Exactly(n));
}
// Implements the .InSequence() clause.
Expectation& InSequence(const Sequence& s) {
ExpectSpecProperty(last_clause_ <= IN_SEQUENCE,
".InSequence() cannot appear after .WillOnce(),"
" .WillRepeatedly(), or "
".RetiresOnSaturation().");
last_clause_ = IN_SEQUENCE;
s.AddExpectation(owner_->GetLinkedExpectationBase(this));
return *this;
}
Expectation& InSequence(const Sequence& s1, const Sequence& s2) {
return InSequence(s1).InSequence(s2);
}
Expectation& InSequence(const Sequence& s1, const Sequence& s2,
const Sequence& s3) {
return InSequence(s1, s2).InSequence(s3);
}
Expectation& InSequence(const Sequence& s1, const Sequence& s2,
const Sequence& s3, const Sequence& s4) {
return InSequence(s1, s2, s3).InSequence(s4);
}
Expectation& InSequence(const Sequence& s1, const Sequence& s2,
const Sequence& s3, const Sequence& s4,
const Sequence& s5) {
return InSequence(s1, s2, s3, s4).InSequence(s5);
}
// Implements the .WillOnce() clause.
Expectation& WillOnce(const Action<F>& action) {
ExpectSpecProperty(last_clause_ <= WILL_ONCE,
".WillOnce() cannot appear after "
".WillRepeatedly() or .RetiresOnSaturation().");
last_clause_ = WILL_ONCE;
actions_.push_back(action);
if (!cardinality_specified()) {
set_cardinality(Exactly(static_cast<int>(actions_.size())));
}
return *this;
}
// Implements the .WillRepeatedly() clause.
Expectation& WillRepeatedly(const Action<F>& action) {
if (last_clause_ == WILL_REPEATEDLY) {
ExpectSpecProperty(false,
".WillRepeatedly() cannot appear "
"more than once in an EXPECT_CALL().");
} else {
ExpectSpecProperty(last_clause_ < WILL_REPEATEDLY,
".WillRepeatedly() cannot appear "
"after .RetiresOnSaturation().");
}
last_clause_ = WILL_REPEATEDLY;
repeated_action_specified_ = true;
repeated_action_ = action;
if (!cardinality_specified()) {
set_cardinality(AtLeast(static_cast<int>(actions_.size())));
}
// Now that no more action clauses can be specified, we check
// whether their count makes sense.
CheckActionCountIfNotDone();
return *this;
}
// Implements the .RetiresOnSaturation() clause.
Expectation& RetiresOnSaturation() {
ExpectSpecProperty(last_clause_ < RETIRES_ON_SATURATION,
".RetiresOnSaturation() cannot appear "
"more than once.");
last_clause_ = RETIRES_ON_SATURATION;
retires_on_saturation_ = true;
// Now that no more action clauses can be specified, we check
// whether their count makes sense.
CheckActionCountIfNotDone();
return *this;
}
// Returns the matchers for the arguments as specified inside the
// EXPECT_CALL() macro.
const ArgumentMatcherTuple& matchers() const {
return matchers_;
}
// Returns the matcher specified by the .WithArguments() clause.
const Matcher<const ArgumentTuple&>& extra_matcher() const {
return extra_matcher_;
}
// Returns the sequence of actions specified by the .WillOnce() clause.
const std::vector<Action<F> >& actions() const { return actions_; }
// Returns the action specified by the .WillRepeatedly() clause.
const Action<F>& repeated_action() const { return repeated_action_; }
// Returns true iff the .RetiresOnSaturation() clause was specified.
bool retires_on_saturation() const { return retires_on_saturation_; }
// Describes how many times a function call matching this
// expectation has occurred (implements
// ExpectationBase::DescribeCallCountTo()).
// L >= g_gmock_mutex
virtual void DescribeCallCountTo(::std::ostream* os) const {
g_gmock_mutex.AssertHeld();
// Describes how many times the function is expected to be called.
*os << " Expected: to be ";
cardinality().DescribeTo(os);
*os << "\n Actual: ";
Cardinality::DescribeActualCallCountTo(call_count(), os);
// Describes the state of the expectation (e.g. is it satisfied?
// is it active?).
*os << " - " << (IsOverSaturated() ? "over-saturated" :
IsSaturated() ? "saturated" :
IsSatisfied() ? "satisfied" : "unsatisfied")
<< " and "
<< (is_retired() ? "retired" : "active");
}
private:
template <typename Function>
friend class FunctionMockerBase;
// The following methods will be called only after the EXPECT_CALL()
// statement finishes and when the current thread holds
// g_gmock_mutex.
// Returns true iff this expectation matches the given arguments.
// L >= g_gmock_mutex
bool Matches(const ArgumentTuple& args) const {
g_gmock_mutex.AssertHeld();
return TupleMatches(matchers_, args) && extra_matcher_.Matches(args);
}
// Returns true iff this expectation should handle the given arguments.
// L >= g_gmock_mutex
bool ShouldHandleArguments(const ArgumentTuple& args) const {
g_gmock_mutex.AssertHeld();
// In case the action count wasn't checked when the expectation
// was defined (e.g. if this expectation has no WillRepeatedly()
// or RetiresOnSaturation() clause), we check it when the
// expectation is used for the first time.
CheckActionCountIfNotDone();
return !is_retired() && AllPrerequisitesAreSatisfied() && Matches(args);
}
// Describes the result of matching the arguments against this
// expectation to the given ostream.
// L >= g_gmock_mutex
void DescribeMatchResultTo(const ArgumentTuple& args,
::std::ostream* os) const {
g_gmock_mutex.AssertHeld();
if (is_retired()) {
*os << " Expected: the expectation is active\n"
<< " Actual: it is retired\n";
} else if (!Matches(args)) {
if (!TupleMatches(matchers_, args)) {
DescribeMatchFailureTupleTo(matchers_, args, os);
}
if (!extra_matcher_.Matches(args)) {
*os << " Expected: ";
extra_matcher_.DescribeTo(os);
*os << "\n Actual: false";
internal::ExplainMatchResultAsNeededTo<const ArgumentTuple&>(
extra_matcher_, args, os);
*os << "\n";
}
} else if (!AllPrerequisitesAreSatisfied()) {
*os << " Expected: all pre-requisites are satisfied\n"
<< " Actual: the following immediate pre-requisites "
<< "are not satisfied:\n";
ExpectationBaseSet unsatisfied_prereqs;
FindUnsatisfiedPrerequisites(&unsatisfied_prereqs);
int i = 0;
for (ExpectationBaseSet::const_iterator it = unsatisfied_prereqs.begin();
it != unsatisfied_prereqs.end(); ++it) {
(*it)->DescribeLocationTo(os);
*os << "pre-requisite #" << i++ << "\n";
}
*os << " (end of pre-requisites)\n";
} else {
// This line is here just for completeness' sake. It will never
// be executed as currently the DescribeMatchResultTo() function
// is called only when the mock function call does NOT match the
// expectation.
*os << "The call matches the expectation.\n";
}
}
// Returns the action that should be taken for the current invocation.
// L >= g_gmock_mutex
const Action<F>& GetCurrentAction(const FunctionMockerBase<F>* mocker,
const ArgumentTuple& args) const {
g_gmock_mutex.AssertHeld();
const int count = call_count();
Assert(count >= 1, __FILE__, __LINE__,
"call_count() is <= 0 when GetCurrentAction() is "
"called - this should never happen.");
const int action_count = static_cast<int>(actions().size());
if (action_count > 0 && !repeated_action_specified_ &&
count > action_count) {
// If there is at least one WillOnce() and no WillRepeatedly(),
// we warn the user when the WillOnce() clauses ran out.
::std::stringstream ss;
DescribeLocationTo(&ss);
ss << "Actions ran out.\n"
<< "Called " << count << " times, but only "
<< action_count << " WillOnce()"
<< (action_count == 1 ? " is" : "s are") << " specified - ";
mocker->DescribeDefaultActionTo(args, &ss);
Log(WARNING, ss.str(), 1);
}
return count <= action_count ? actions()[count - 1] : repeated_action();
}
// Given the arguments of a mock function call, if the call will
// over-saturate this expectation, returns the default action;
// otherwise, returns the next action in this expectation. Also
// describes *what* happened to 'what', and explains *why* Google
// Mock does it to 'why'. This method is not const as it calls
// IncrementCallCount().
// L >= g_gmock_mutex
Action<F> GetActionForArguments(const FunctionMockerBase<F>* mocker,
const ArgumentTuple& args,
::std::ostream* what,
::std::ostream* why) {
g_gmock_mutex.AssertHeld();
if (IsSaturated()) {
// We have an excessive call.
IncrementCallCount();
*what << "Mock function called more times than expected - ";
mocker->DescribeDefaultActionTo(args, what);
DescribeCallCountTo(why);
// TODO(wan): allow the user to control whether unexpected calls
// should fail immediately or continue using a flag
// --gmock_unexpected_calls_are_fatal.
return DoDefault();
}
IncrementCallCount();
RetireAllPreRequisites();
if (retires_on_saturation() && IsSaturated()) {
Retire();
}
// Must be done after IncrementCount()!
*what << "Expected mock function call.\n";
return GetCurrentAction(mocker, args);
}
// Checks the action count (i.e. the number of WillOnce() and
// WillRepeatedly() clauses) against the cardinality if this hasn't
// been done before. Prints a warning if there are too many or too
// few actions.
// L < mutex_
void CheckActionCountIfNotDone() const {
bool should_check = false;
{
MutexLock l(&mutex_);
if (!action_count_checked_) {
action_count_checked_ = true;
should_check = true;
}
}
if (should_check) {
if (!cardinality_specified_) {
// The cardinality was inferred - no need to check the action
// count against it.
return;
}
// The cardinality was explicitly specified.
const int action_count = static_cast<int>(actions_.size());
const int upper_bound = cardinality().ConservativeUpperBound();
const int lower_bound = cardinality().ConservativeLowerBound();
bool too_many; // True if there are too many actions, or false
// if there are too few.
if (action_count > upper_bound ||
(action_count == upper_bound && repeated_action_specified_)) {
too_many = true;
} else if (0 < action_count && action_count < lower_bound &&
!repeated_action_specified_) {
too_many = false;
} else {
return;
}
::std::stringstream ss;
DescribeLocationTo(&ss);
ss << "Too " << (too_many ? "many" : "few")
<< " actions specified.\n"
<< "Expected to be ";
cardinality().DescribeTo(&ss);
ss << ", but has " << (too_many ? "" : "only ")
<< action_count << " WillOnce()"
<< (action_count == 1 ? "" : "s");
if (repeated_action_specified_) {
ss << " and a WillRepeatedly()";
}
ss << ".";
Log(WARNING, ss.str(), -1); // -1 means "don't print stack trace".
}
}
// All the fields below won't change once the EXPECT_CALL()
// statement finishes.
FunctionMockerBase<F>* const owner_;
ArgumentMatcherTuple matchers_;
Matcher<const ArgumentTuple&> extra_matcher_;
std::vector<Action<F> > actions_;
bool repeated_action_specified_; // True if a WillRepeatedly() was specified.
Action<F> repeated_action_;
bool retires_on_saturation_;
Clause last_clause_;
mutable bool action_count_checked_; // Under mutex_.
mutable Mutex mutex_; // Protects action_count_checked_.
}; // class Expectation
// A MockSpec object is used by ON_CALL() or EXPECT_CALL() for
// specifying the default behavior of, or expectation on, a mock
// function.
// Note: class MockSpec really belongs to the ::testing namespace.
// However if we define it in ::testing, MSVC will complain when
// classes in ::testing::internal declare it as a friend class
// template. To workaround this compiler bug, we define MockSpec in
// ::testing::internal and import it into ::testing.
template <typename F>
class MockSpec {
public:
typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
typedef typename internal::Function<F>::ArgumentMatcherTuple
ArgumentMatcherTuple;
// Constructs a MockSpec object, given the function mocker object
// that the spec is associated with.
explicit MockSpec(internal::FunctionMockerBase<F>* function_mocker)
: function_mocker_(function_mocker) {}
// Adds a new default action spec to the function mocker and returns
// the newly created spec.
internal::DefaultActionSpec<F>& InternalDefaultActionSetAt(
const char* file, int line, const char* obj, const char* call) {
LogWithLocation(internal::INFO, file, line,
string("ON_CALL(") + obj + ", " + call + ") invoked");
return function_mocker_->AddNewDefaultActionSpec(file, line, matchers_);
}
// Adds a new expectation spec to the function mocker and returns
// the newly created spec.
internal::Expectation<F>& InternalExpectedAt(
const char* file, int line, const char* obj, const char* call) {
LogWithLocation(internal::INFO, file, line,
string("EXPECT_CALL(") + obj + ", " + call + ") invoked");
return function_mocker_->AddNewExpectation(file, line, matchers_);
}
private:
template <typename Function>
friend class internal::FunctionMocker;
void SetMatchers(const ArgumentMatcherTuple& matchers) {
matchers_ = matchers;
}
// Logs a message including file and line number information.
void LogWithLocation(testing::internal::LogSeverity severity,
const char* file, int line,
const string& message) {
::std::ostringstream s;
s << file << ":" << line << ": " << message << ::std::endl;
Log(severity, s.str(), 0);
}
// The function mocker that owns this spec.
internal::FunctionMockerBase<F>* const function_mocker_;
// The argument matchers specified in the spec.
ArgumentMatcherTuple matchers_;
}; // class MockSpec
// MSVC warns about using 'this' in base member initializer list, so
// we need to temporarily disable the warning. We have to do it for
// the entire class to suppress the warning, even though it's about
// the constructor only.
#ifdef _MSC_VER
#pragma warning(push) // Saves the current warning state.
#pragma warning(disable:4355) // Temporarily disables warning 4355.
#endif // _MSV_VER
// C++ treats the void type specially. For example, you cannot define
// a void-typed variable or pass a void value to a function.
// ActionResultHolder<T> holds a value of type T, where T must be a
// copyable type or void (T doesn't need to be default-constructable).
// It hides the syntactic difference between void and other types, and
// is used to unify the code for invoking both void-returning and
// non-void-returning mock functions. This generic definition is used
// when T is not void.
template <typename T>
class ActionResultHolder {
public:
explicit ActionResultHolder(T value) : value_(value) {}
// The compiler-generated copy constructor and assignment operator
// are exactly what we need, so we don't need to define them.
T value() const { return value_; }
// Prints the held value as an action's result to os.
void PrintAsActionResult(::std::ostream* os) const {
*os << "\n Returns: ";
UniversalPrinter<T>::Print(value_, os);
}
// Performs the given mock function's default action and returns the
// result in a ActionResultHolder.
template <typename Function, typename Arguments>
static ActionResultHolder PerformDefaultAction(
const FunctionMockerBase<Function>* func_mocker,
const Arguments& args,
const string& call_description) {
return ActionResultHolder(
func_mocker->PerformDefaultAction(args, call_description));
}
// Performs the given action and returns the result in a
// ActionResultHolder.
template <typename Function, typename Arguments>
static ActionResultHolder PerformAction(const Action<Function>& action,
const Arguments& args) {
return ActionResultHolder(action.Perform(args));
}
private:
T value_;
};
// Specialization for T = void.
template <>
class ActionResultHolder<void> {
public:
ActionResultHolder() {}
void value() const {}
void PrintAsActionResult(::std::ostream* /* os */) const {}
template <typename Function, typename Arguments>
static ActionResultHolder PerformDefaultAction(
const FunctionMockerBase<Function>* func_mocker,
const Arguments& args,
const string& call_description) {
func_mocker->PerformDefaultAction(args, call_description);
return ActionResultHolder();
}
template <typename Function, typename Arguments>
static ActionResultHolder PerformAction(const Action<Function>& action,
const Arguments& args) {
action.Perform(args);
return ActionResultHolder();
}
};
// The base of the function mocker class for the given function type.
// We put the methods in this class instead of its child to avoid code
// bloat.
template <typename F>
class FunctionMockerBase : public UntypedFunctionMockerBase {
public:
typedef typename Function<F>::Result Result;
typedef typename Function<F>::ArgumentTuple ArgumentTuple;
typedef typename Function<F>::ArgumentMatcherTuple ArgumentMatcherTuple;
FunctionMockerBase() : mock_obj_(NULL), name_(""), current_spec_(this) {}
// The destructor verifies that all expectations on this mock
// function have been satisfied. If not, it will report Google Test
// non-fatal failures for the violations.
// L < g_gmock_mutex
virtual ~FunctionMockerBase() {
MutexLock l(&g_gmock_mutex);
VerifyAndClearExpectationsLocked();
Mock::UnregisterLocked(this);
}
// Returns the ON_CALL spec that matches this mock function with the
// given arguments; returns NULL if no matching ON_CALL is found.
// L = *
const DefaultActionSpec<F>* FindDefaultActionSpec(
const ArgumentTuple& args) const {
for (typename std::vector<DefaultActionSpec<F> >::const_reverse_iterator it
= default_actions_.rbegin();
it != default_actions_.rend(); ++it) {
const DefaultActionSpec<F>& spec = *it;
if (spec.Matches(args))
return &spec;
}
return NULL;
}
// Performs the default action of this mock function on the given arguments
// and returns the result. Asserts with a helpful call descrption if there is
// no valid return value. This method doesn't depend on the mutable state of
// this object, and thus can be called concurrently without locking.
// L = *
Result PerformDefaultAction(const ArgumentTuple& args,
const string& call_description) const {
const DefaultActionSpec<F>* const spec = FindDefaultActionSpec(args);
if (spec != NULL) {
return spec->GetAction().Perform(args);
}
Assert(DefaultValue<Result>::Exists(), "", -1,
call_description + "\n The mock function has no default action "
"set, and its return type has no default value set.");
return DefaultValue<Result>::Get();
}
// Registers this function mocker and the mock object owning it;
// returns a reference to the function mocker object. This is only
// called by the ON_CALL() and EXPECT_CALL() macros.
// L < g_gmock_mutex
FunctionMocker<F>& RegisterOwner(const void* mock_obj) {
{
MutexLock l(&g_gmock_mutex);
mock_obj_ = mock_obj;
}
Mock::Register(mock_obj, this);
return *::testing::internal::down_cast<FunctionMocker<F>*>(this);
}
// The following two functions are from UntypedFunctionMockerBase.
// Verifies that all expectations on this mock function have been
// satisfied. Reports one or more Google Test non-fatal failures
// and returns false if not.
// L >= g_gmock_mutex
virtual bool VerifyAndClearExpectationsLocked();
// Clears the ON_CALL()s set on this mock function.
// L >= g_gmock_mutex
virtual void ClearDefaultActionsLocked() {
g_gmock_mutex.AssertHeld();
default_actions_.clear();
}
// Sets the name of the function being mocked. Will be called upon
// each invocation of this mock function.
// L < g_gmock_mutex
void SetOwnerAndName(const void* mock_obj, const char* name) {
// We protect name_ under g_gmock_mutex in case this mock function
// is called from two threads concurrently.
MutexLock l(&g_gmock_mutex);
mock_obj_ = mock_obj;
name_ = name;
}
// Returns the address of the mock object this method belongs to.
// Must be called after SetOwnerAndName() has been called.
// L < g_gmock_mutex
const void* MockObject() const {
const void* mock_obj;
{
// We protect mock_obj_ under g_gmock_mutex in case this mock
// function is called from two threads concurrently.
MutexLock l(&g_gmock_mutex);
mock_obj = mock_obj_;
}
return mock_obj;
}
// Returns the name of the function being mocked. Must be called
// after SetOwnerAndName() has been called.
// L < g_gmock_mutex
const char* Name() const {
const char* name;
{
// We protect name_ under g_gmock_mutex in case this mock
// function is called from two threads concurrently.
MutexLock l(&g_gmock_mutex);
name = name_;
}
return name;
}
protected:
template <typename Function>
friend class MockSpec;
// Returns the result of invoking this mock function with the given
// arguments. This function can be safely called from multiple
// threads concurrently.
// L < g_gmock_mutex
Result InvokeWith(const ArgumentTuple& args);
// Adds and returns a default action spec for this mock function.
// L < g_gmock_mutex
DefaultActionSpec<F>& AddNewDefaultActionSpec(
const char* file, int line,
const ArgumentMatcherTuple& m) {
Mock::RegisterUseByOnCallOrExpectCall(MockObject(), file, line);
default_actions_.push_back(DefaultActionSpec<F>(file, line, m));
return default_actions_.back();
}
// Adds and returns an expectation spec for this mock function.
// L < g_gmock_mutex
Expectation<F>& AddNewExpectation(
const char* file, int line,
const ArgumentMatcherTuple& m) {
Mock::RegisterUseByOnCallOrExpectCall(MockObject(), file, line);
const linked_ptr<Expectation<F> > expectation(
new Expectation<F>(this, file, line, m));
expectations_.push_back(expectation);
// Adds this expectation into the implicit sequence if there is one.
Sequence* const implicit_sequence = g_gmock_implicit_sequence.get();
if (implicit_sequence != NULL) {
implicit_sequence->AddExpectation(expectation);
}
return *expectation;
}
// The current spec (either default action spec or expectation spec)
// being described on this function mocker.
MockSpec<F>& current_spec() { return current_spec_; }
private:
template <typename Func> friend class Expectation;
typedef std::vector<internal::linked_ptr<Expectation<F> > > Expectations;
// Gets the internal::linked_ptr<ExpectationBase> object that co-owns 'exp'.
internal::linked_ptr<ExpectationBase> GetLinkedExpectationBase(
Expectation<F>* exp) {
for (typename Expectations::const_iterator it = expectations_.begin();
it != expectations_.end(); ++it) {
if (it->get() == exp) {
return *it;
}
}
Assert(false, __FILE__, __LINE__, "Cannot find expectation.");
return internal::linked_ptr<ExpectationBase>(NULL);
// The above statement is just to make the code compile, and will
// never be executed.
}
// Some utilities needed for implementing InvokeWith().
// Describes what default action will be performed for the given
// arguments.
// L = *
void DescribeDefaultActionTo(const ArgumentTuple& args,
::std::ostream* os) const {
const DefaultActionSpec<F>* const spec = FindDefaultActionSpec(args);
if (spec == NULL) {
*os << (internal::type_equals<Result, void>::value ?
"returning directly.\n" :
"returning default value.\n");
} else {
*os << "taking default action specified at:\n"
<< spec->file() << ":" << spec->line() << ":\n";
}
}
// Writes a message that the call is uninteresting (i.e. neither
// explicitly expected nor explicitly unexpected) to the given
// ostream.
// L < g_gmock_mutex
void DescribeUninterestingCall(const ArgumentTuple& args,
::std::ostream* os) const {
*os << "Uninteresting mock function call - ";
DescribeDefaultActionTo(args, os);
*os << " Function call: " << Name();
UniversalPrinter<ArgumentTuple>::Print(args, os);
}
// Critical section: We must find the matching expectation and the
// corresponding action that needs to be taken in an ATOMIC
// transaction. Otherwise another thread may call this mock
// method in the middle and mess up the state.
//
// However, performing the action has to be left out of the critical
// section. The reason is that we have no control on what the
// action does (it can invoke an arbitrary user function or even a
// mock function) and excessive locking could cause a dead lock.
// L < g_gmock_mutex
bool FindMatchingExpectationAndAction(
const ArgumentTuple& args, Expectation<F>** exp, Action<F>* action,
bool* is_excessive, ::std::ostream* what, ::std::ostream* why) {
MutexLock l(&g_gmock_mutex);
*exp = this->FindMatchingExpectationLocked(args);
if (*exp == NULL) { // A match wasn't found.
*action = DoDefault();
this->FormatUnexpectedCallMessageLocked(args, what, why);
return false;
}
// This line must be done before calling GetActionForArguments(),
// which will increment the call count for *exp and thus affect
// its saturation status.
*is_excessive = (*exp)->IsSaturated();
*action = (*exp)->GetActionForArguments(this, args, what, why);
return true;
}
// Returns the expectation that matches the arguments, or NULL if no
// expectation matches them.
// L >= g_gmock_mutex
Expectation<F>* FindMatchingExpectationLocked(
const ArgumentTuple& args) const {
g_gmock_mutex.AssertHeld();
for (typename Expectations::const_reverse_iterator it =
expectations_.rbegin();
it != expectations_.rend(); ++it) {
Expectation<F>* const exp = it->get();
if (exp->ShouldHandleArguments(args)) {
return exp;
}
}
return NULL;
}
// Returns a message that the arguments don't match any expectation.
// L >= g_gmock_mutex
void FormatUnexpectedCallMessageLocked(const ArgumentTuple& args,
::std::ostream* os,
::std::ostream* why) const {
g_gmock_mutex.AssertHeld();
*os << "\nUnexpected mock function call - ";
DescribeDefaultActionTo(args, os);
PrintTriedExpectationsLocked(args, why);
}
// Prints a list of expectations that have been tried against the
// current mock function call.
// L >= g_gmock_mutex
void PrintTriedExpectationsLocked(const ArgumentTuple& args,
::std::ostream* why) const {
g_gmock_mutex.AssertHeld();
const int count = static_cast<int>(expectations_.size());
*why << "Google Mock tried the following " << count << " "
<< (count == 1 ? "expectation, but it didn't match" :
"expectations, but none matched")
<< ":\n";
for (int i = 0; i < count; i++) {
*why << "\n";
expectations_[i]->DescribeLocationTo(why);
if (count > 1) {
*why << "tried expectation #" << i;
}
*why << "\n";
expectations_[i]->DescribeMatchResultTo(args, why);
expectations_[i]->DescribeCallCountTo(why);
}
}
// Address of the mock object this mock method belongs to. Only
// valid after this mock method has been called or
// ON_CALL/EXPECT_CALL has been invoked on it.
const void* mock_obj_; // Protected by g_gmock_mutex.
// Name of the function being mocked. Only valid after this mock
// method has been called.
const char* name_; // Protected by g_gmock_mutex.
// The current spec (either default action spec or expectation spec)
// being described on this function mocker.
MockSpec<F> current_spec_;
// All default action specs for this function mocker.
std::vector<DefaultActionSpec<F> > default_actions_;
// All expectations for this function mocker.
Expectations expectations_;
// There is no generally useful and implementable semantics of
// copying a mock object, so copying a mock is usually a user error.
// Thus we disallow copying function mockers. If the user really
// wants to copy a mock object, he should implement his own copy
// operation, for example:
//
// class MockFoo : public Foo {
// public:
// // Defines a copy constructor explicitly.
// MockFoo(const MockFoo& src) {}
// ...
// };
GTEST_DISALLOW_COPY_AND_ASSIGN_(FunctionMockerBase);
}; // class FunctionMockerBase
#ifdef _MSC_VER
#pragma warning(pop) // Restores the warning state.
#endif // _MSV_VER
// Implements methods of FunctionMockerBase.
// Verifies that all expectations on this mock function have been
// satisfied. Reports one or more Google Test non-fatal failures and
// returns false if not.
// L >= g_gmock_mutex
template <typename F>
bool FunctionMockerBase<F>::VerifyAndClearExpectationsLocked() {
g_gmock_mutex.AssertHeld();
bool expectations_met = true;
for (typename Expectations::const_iterator it = expectations_.begin();
it != expectations_.end(); ++it) {
Expectation<F>* const exp = it->get();
if (exp->IsOverSaturated()) {
// There was an upper-bound violation. Since the error was
// already reported when it occurred, there is no need to do
// anything here.
expectations_met = false;
} else if (!exp->IsSatisfied()) {
expectations_met = false;
::std::stringstream ss;
ss << "Actual function call count doesn't match this expectation.\n";
// No need to show the source file location of the expectation
// in the description, as the Expect() call that follows already
// takes care of it.
exp->DescribeCallCountTo(&ss);
Expect(false, exp->file(), exp->line(), ss.str());
}
}
expectations_.clear();
return expectations_met;
}
// Reports an uninteresting call (whose description is in msg) in the
// manner specified by 'reaction'.
void ReportUninterestingCall(CallReaction reaction, const string& msg);
// Calculates the result of invoking this mock function with the given
// arguments, prints it, and returns it.
// L < g_gmock_mutex
template <typename F>
typename Function<F>::Result FunctionMockerBase<F>::InvokeWith(
const typename Function<F>::ArgumentTuple& args) {
typedef ActionResultHolder<Result> ResultHolder;
if (expectations_.size() == 0) {
// No expectation is set on this mock method - we have an
// uninteresting call.
// We must get Google Mock's reaction on uninteresting calls
// made on this mock object BEFORE performing the action,
// because the action may DELETE the mock object and make the
// following expression meaningless.
const CallReaction reaction =
Mock::GetReactionOnUninterestingCalls(MockObject());
// True iff we need to print this call's arguments and return
// value. This definition must be kept in sync with
// the behavior of ReportUninterestingCall().
const bool need_to_report_uninteresting_call =
// If the user allows this uninteresting call, we print it
// only when he wants informational messages.
reaction == ALLOW ? LogIsVisible(INFO) :
// If the user wants this to be a warning, we print it only
// when he wants to see warnings.
reaction == WARN ? LogIsVisible(WARNING) :
// Otherwise, the user wants this to be an error, and we
// should always print detailed information in the error.
true;
if (!need_to_report_uninteresting_call) {
// Perform the action without printing the call information.
return PerformDefaultAction(args, "");
}
// Warns about the uninteresting call.
::std::stringstream ss;
DescribeUninterestingCall(args, &ss);
// Calculates the function result.
const ResultHolder result =
ResultHolder::PerformDefaultAction(this, args, ss.str());
// Prints the function result.
result.PrintAsActionResult(&ss);
ReportUninterestingCall(reaction, ss.str());
return result.value();
}
bool is_excessive = false;
::std::stringstream ss;
::std::stringstream why;
::std::stringstream loc;
Action<F> action;
Expectation<F>* exp;
// The FindMatchingExpectationAndAction() function acquires and
// releases g_gmock_mutex.
const bool found = FindMatchingExpectationAndAction(
args, &exp, &action, &is_excessive, &ss, &why);
// True iff we need to print the call's arguments and return value.
// This definition must be kept in sync with the uses of Expect()
// and Log() in this function.
const bool need_to_report_call = !found || is_excessive || LogIsVisible(INFO);
if (!need_to_report_call) {
// Perform the action without printing the call information.
return action.IsDoDefault() ? PerformDefaultAction(args, "") :
action.Perform(args);
}
ss << " Function call: " << Name();
UniversalPrinter<ArgumentTuple>::Print(args, &ss);
// In case the action deletes a piece of the expectation, we
// generate the message beforehand.
if (found && !is_excessive) {
exp->DescribeLocationTo(&loc);
}
const ResultHolder result = action.IsDoDefault() ?
ResultHolder::PerformDefaultAction(this, args, ss.str()) :
ResultHolder::PerformAction(action, args);
result.PrintAsActionResult(&ss);
ss << "\n" << why.str();
if (!found) {
// No expectation matches this call - reports a failure.
Expect(false, NULL, -1, ss.str());
} else if (is_excessive) {
// We had an upper-bound violation and the failure message is in ss.
Expect(false, exp->file(), exp->line(), ss.str());
} else {
// We had an expected call and the matching expectation is
// described in ss.
Log(INFO, loc.str() + ss.str(), 2);
}
return result.value();
}
} // namespace internal
// The style guide prohibits "using" statements in a namespace scope
// inside a header file. However, the MockSpec class template is
// meant to be defined in the ::testing namespace. The following line
// is just a trick for working around a bug in MSVC 8.0, which cannot
// handle it if we define MockSpec in ::testing.
using internal::MockSpec;
// Const(x) is a convenient function for obtaining a const reference
// to x. This is useful for setting expectations on an overloaded
// const mock method, e.g.
//
// class MockFoo : public FooInterface {
// public:
// MOCK_METHOD0(Bar, int());
// MOCK_CONST_METHOD0(Bar, int&());
// };
//
// MockFoo foo;
// // Expects a call to non-const MockFoo::Bar().
// EXPECT_CALL(foo, Bar());
// // Expects a call to const MockFoo::Bar().
// EXPECT_CALL(Const(foo), Bar());
template <typename T>
inline const T& Const(const T& x) { return x; }
} // namespace testing
// A separate macro is required to avoid compile errors when the name
// of the method used in call is a result of macro expansion.
// See CompilesWithMethodNameExpandedFromMacro tests in
// internal/gmock-spec-builders_test.cc for more details.
#define GMOCK_ON_CALL_IMPL_(obj, call) \
((obj).gmock_##call).InternalDefaultActionSetAt(__FILE__, __LINE__, \
#obj, #call)
#define ON_CALL(obj, call) GMOCK_ON_CALL_IMPL_(obj, call)
#define GMOCK_EXPECT_CALL_IMPL_(obj, call) \
((obj).gmock_##call).InternalExpectedAt(__FILE__, __LINE__, #obj, #call)
#define EXPECT_CALL(obj, call) GMOCK_EXPECT_CALL_IMPL_(obj, call)
#endif // GMOCK_INCLUDE_GMOCK_GMOCK_SPEC_BUILDERS_H_