// Assert compares the arguments with the specified objects and fails if
// they do not exactly match.
func (args Arguments) Assert(t TestingT, objects ...interface{}) bool {

	// get the differences
	diff, diffCount := args.Diff(objects)

	if diffCount == 0 {
		return true
	}

	// there are differences... report them...
	t.Logf(diff)
	t.Errorf("%sArguments do not match.", assert.CallerInfo())

	return false

}

// AssertExpectations asserts that everything specified with On and Return was
// in fact called as expected.  Calls may have occurred in any order.
func (m *Mock) AssertExpectations(t TestingT) bool {

	var somethingMissing bool = false
	var failedExpectations int = 0

	// iterate through each expectation
	for _, expectedCall := range m.ExpectedCalls {
		switch {
		case !m.methodWasCalled(expectedCall.Method, expectedCall.Arguments):
			somethingMissing = true
			failedExpectations++
			t.Logf("\u274C\t%s(%s)", expectedCall.Method, expectedCall.Arguments.String())
		case expectedCall.Repeatability > 0:
			somethingMissing = true
			failedExpectations++
		default:
			t.Logf("\u2705\t%s(%s)", expectedCall.Method, expectedCall.Arguments.String())
		}
	}

	if somethingMissing {
		t.Errorf("FAIL: %d out of %d expectation(s) were met.\n\tThe code you are testing needs to make %d more call(s).\n\tat: %s", len(m.ExpectedCalls)-failedExpectations, len(m.ExpectedCalls), failedExpectations, assert.CallerInfo())
	}

	return !somethingMissing
}

// Called tells the mock object that a method has been called, and gets an array
// of arguments to return.  Panics if the call is unexpected (i.e. not preceeded by
// appropriate .On .Return() calls)
// If Call.WaitFor is set, blocks until the channel is closed or receives a message.
func (m *Mock) Called(arguments ...interface{}) Arguments {
	defer m.mutex.Unlock()
	m.mutex.Lock()

	// get the calling function's name
	pc, _, _, ok := runtime.Caller(1)
	if !ok {
		panic("Couldn't get the caller information")
	}
	functionPath := runtime.FuncForPC(pc).Name()
	parts := strings.Split(functionPath, ".")
	functionName := parts[len(parts)-1]

	found, call := m.findExpectedCall(functionName, arguments...)

	switch {
	case found < 0:
		// we have to fail here - because we don't know what to do
		// as the return arguments.  This is because:
		//
		//   a) this is a totally unexpected call to this method,
		//   b) the arguments are not what was expected, or
		//   c) the developer has forgotten to add an accompanying On...Return pair.

		closestFound, closestCall := m.findClosestCall(functionName, arguments...)

		if closestFound {
			panic(fmt.Sprintf("\n\nmock: Unexpected Method Call\n-----------------------------\n\n%s\n\nThe closest call I have is: \n\n%s\n", callString(functionName, arguments, true), callString(functionName, closestCall.Arguments, true)))
		} else {
			panic(fmt.Sprintf("\nassert: mock: I don't know what to return because the method call was unexpected.\n\tEither do Mock.On(\"%s\").Return(...) first, or remove the %s() call.\n\tThis method was unexpected:\n\t\t%s\n\tat: %s", functionName, functionName, callString(functionName, arguments, true), assert.CallerInfo()))
		}
	case call.Repeatability == 1:
		call.Repeatability = -1
		m.ExpectedCalls[found] = *call
	case call.Repeatability > 1:
		call.Repeatability -= 1
		m.ExpectedCalls[found] = *call
	}

	// add the call
	m.Calls = append(m.Calls, Call{functionName, arguments, make([]interface{}, 0), 0, nil, nil})

	// block if specified
	if call.WaitFor != nil {
		<-call.WaitFor
	}

	if call.Run != nil {
		call.Run(arguments)
	}

	return call.ReturnArguments

}

// AssertExpectations asserts that everything specified with On and Return was
// in fact called as expected.  Calls may have occurred in any order.
func (m *Mock) AssertExpectations(t TestingT) bool {
	var somethingMissing bool
	var failedExpectations int

	// iterate through each expectation
	expectedCalls := m.expectedCalls()
	for _, expectedCall := range expectedCalls {
		if !m.methodWasCalled(expectedCall.Method, expectedCall.Arguments) && expectedCall.totalCalls == 0 {
			somethingMissing = true
			failedExpectations++
			t.Logf("\u274C\t%s(%s)", expectedCall.Method, expectedCall.Arguments.String())
		} else {
			m.mutex.Lock()
			if expectedCall.Repeatability > 0 {
				somethingMissing = true
				failedExpectations++
			} else {
				t.Logf("\u2705\t%s(%s)", expectedCall.Method, expectedCall.Arguments.String())
			}
			m.mutex.Unlock()
		}
	}

	if somethingMissing {
		t.Errorf("FAIL: %d out of %d expectation(s) were met.\n\tThe code you are testing needs to make %d more call(s).\n\tat: %s", len(expectedCalls)-failedExpectations, len(expectedCalls), failedExpectations, assert.CallerInfo())
	}

	return !somethingMissing
}

// Called tells the mock object that a method has been called, and gets an array
// of arguments to return.  Panics if the call is unexpected (i.e. not preceded by
// appropriate .On .Return() calls)
// If Call.WaitFor is set, blocks until the channel is closed or receives a message.
func (m *Mock) Called(arguments ...interface{}) Arguments {
	// get the calling function's name
	pc, _, _, ok := runtime.Caller(1)
	if !ok {
		panic("Couldn't get the caller information")
	}
	functionPath := runtime.FuncForPC(pc).Name()
	//Next four lines are required to use GCCGO function naming conventions.
	//For Ex:  github_com_docker_libkv_store_mock.WatchTree.pN39_github_com_docker_libkv_store_mock.Mock
	//uses inteface information unlike golang github.com/docker/libkv/store/mock.(*Mock).WatchTree
	//With GCCGO we need to remove interface information starting from pN<dd>.
	re := regexp.MustCompile("\\.pN\\d+_")
	if re.MatchString(functionPath) {
		functionPath = re.Split(functionPath, -1)[0]
	}
	parts := strings.Split(functionPath, ".")
	functionName := parts[len(parts)-1]

	found, call := m.findExpectedCall(functionName, arguments...)

	if found < 0 {
		// we have to fail here - because we don't know what to do
		// as the return arguments.  This is because:
		//
		//   a) this is a totally unexpected call to this method,
		//   b) the arguments are not what was expected, or
		//   c) the developer has forgotten to add an accompanying On...Return pair.

		closestFound, closestCall := m.findClosestCall(functionName, arguments...)

		if closestFound {
			panic(fmt.Sprintf("\n\nmock: Unexpected Method Call\n-----------------------------\n\n%s\n\nThe closest call I have is: \n\n%s\n\n%s\n", callString(functionName, arguments, true), callString(functionName, closestCall.Arguments, true), diffArguments(arguments, closestCall.Arguments)))
		} else {
			panic(fmt.Sprintf("\nassert: mock: I don't know what to return because the method call was unexpected.\n\tEither do Mock.On(\"%s\").Return(...) first, or remove the %s() call.\n\tThis method was unexpected:\n\t\t%s\n\tat: %s", functionName, functionName, callString(functionName, arguments, true), assert.CallerInfo()))
		}
	} else {
		m.mutex.Lock()
		switch {
		case call.Repeatability == 1:
			call.Repeatability = -1
			call.totalCalls++

		case call.Repeatability > 1:
			call.Repeatability--
			call.totalCalls++

		case call.Repeatability == 0:
			call.totalCalls++
		}
		m.mutex.Unlock()
	}

	// add the call
	m.mutex.Lock()
	m.Calls = append(m.Calls, *newCall(m, functionName, arguments...))
	m.mutex.Unlock()

	// block if specified
	if call.WaitFor != nil {
		<-call.WaitFor
	}

	if call.RunFn != nil {
		call.RunFn(arguments)
	}

	return call.ReturnArguments
}

// Called tells the mock object that a method has been called, and gets an array
// of arguments to return.  Panics if the call is unexpected (i.e. not preceeded by
// appropriate .On .Return() calls)
// If Call.WaitFor is set, blocks until the channel is closed or receives a message.
func (m *Mock) Called(arguments ...interface{}) Arguments {
	// get the calling function's name
	pc, _, _, ok := runtime.Caller(1)
	if !ok {
		panic("Couldn't get the caller information")
	}
	functionPath := runtime.FuncForPC(pc).Name()
	parts := strings.Split(functionPath, ".")
	functionName := parts[len(parts)-1]

	found, call := m.findExpectedCall(functionName, arguments...)

	if found < 0 {
		// we have to fail here - because we don't know what to do
		// as the return arguments.  This is because:
		//
		//   a) this is a totally unexpected call to this method,
		//   b) the arguments are not what was expected, or
		//   c) the developer has forgotten to add an accompanying On...Return pair.

		closestFound, closestCall := m.findClosestCall(functionName, arguments...)

		if closestFound {
			panic(fmt.Sprintf(unexpectedMethodCallClosest, callString(functionName, arguments, true), callString(functionName, closestCall.Arguments, true)))
		} else {
			panic(fmt.Sprintf(unexpectedMethodCall, functionName, functionName, callString(functionName, arguments, true), assert.CallerInfo()))
		}
	} else {
		m.mutex.Lock()
		switch {
		case call.Repeatability == 1:
			call.Repeatability = -1
			m.ExpectedCalls[found] = *call
		case call.Repeatability > 1:
			call.Repeatability -= 1
			m.ExpectedCalls[found] = *call
		}
		m.mutex.Unlock()
	}

	// add the call
	m.mutex.Lock()
	m.Calls = append(m.Calls, Call{functionName, arguments, make([]interface{}, 0), 0, nil, nil})
	m.mutex.Unlock()

	// block if specified
	if call.WaitFor != nil {
		<-call.WaitFor
	}

	if call.Run != nil {
		call.Run(arguments)
	}

	return call.ReturnArguments

}