673 lines
21 KiB
C++
673 lines
21 KiB
C++
$$ -*- mode: c++; -*-
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$$ This is a Pump source file. Please use Pump to convert it to
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$$ gmock-generated-actions.h.
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$$
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$var n = 10 $$ The maximum arity we support.
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$$ }} This line fixes auto-indentation of the following code in Emacs.
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// Copyright 2008, Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Google Mock - a framework for writing C++ mock classes.
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//
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// This file implements some commonly used variadic matchers.
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#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_MATCHERS_H_
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#define GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_MATCHERS_H_
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#include <iterator>
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#include <sstream>
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#include <string>
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#include <vector>
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#include "gmock/gmock-matchers.h"
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namespace testing {
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namespace internal {
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$range i 0..n-1
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// The type of the i-th (0-based) field of Tuple.
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#define GMOCK_FIELD_TYPE_(Tuple, i) \
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typename ::testing::tuple_element<i, Tuple>::type
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// TupleFields<Tuple, k0, ..., kn> is for selecting fields from a
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// tuple of type Tuple. It has two members:
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//
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// type: a tuple type whose i-th field is the ki-th field of Tuple.
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// GetSelectedFields(t): returns fields k0, ..., and kn of t as a tuple.
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//
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// For example, in class TupleFields<tuple<bool, char, int>, 2, 0>, we have:
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//
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// type is tuple<int, bool>, and
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// GetSelectedFields(make_tuple(true, 'a', 42)) is (42, true).
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template <class Tuple$for i [[, int k$i = -1]]>
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class TupleFields;
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// This generic version is used when there are $n selectors.
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template <class Tuple$for i [[, int k$i]]>
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class TupleFields {
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public:
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typedef ::testing::tuple<$for i, [[GMOCK_FIELD_TYPE_(Tuple, k$i)]]> type;
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static type GetSelectedFields(const Tuple& t) {
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return type($for i, [[get<k$i>(t)]]);
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}
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};
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// The following specialization is used for 0 ~ $(n-1) selectors.
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$for i [[
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$$ }}}
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$range j 0..i-1
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$range k 0..n-1
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template <class Tuple$for j [[, int k$j]]>
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class TupleFields<Tuple, $for k, [[$if k < i [[k$k]] $else [[-1]]]]> {
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public:
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typedef ::testing::tuple<$for j, [[GMOCK_FIELD_TYPE_(Tuple, k$j)]]> type;
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static type GetSelectedFields(const Tuple& $if i==0 [[/* t */]] $else [[t]]) {
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return type($for j, [[get<k$j>(t)]]);
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}
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};
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]]
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#undef GMOCK_FIELD_TYPE_
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// Implements the Args() matcher.
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$var ks = [[$for i, [[k$i]]]]
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template <class ArgsTuple$for i [[, int k$i = -1]]>
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class ArgsMatcherImpl : public MatcherInterface<ArgsTuple> {
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public:
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// ArgsTuple may have top-level const or reference modifiers.
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typedef GTEST_REMOVE_REFERENCE_AND_CONST_(ArgsTuple) RawArgsTuple;
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typedef typename internal::TupleFields<RawArgsTuple, $ks>::type SelectedArgs;
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typedef Matcher<const SelectedArgs&> MonomorphicInnerMatcher;
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template <typename InnerMatcher>
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explicit ArgsMatcherImpl(const InnerMatcher& inner_matcher)
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: inner_matcher_(SafeMatcherCast<const SelectedArgs&>(inner_matcher)) {}
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virtual bool MatchAndExplain(ArgsTuple args,
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MatchResultListener* listener) const {
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const SelectedArgs& selected_args = GetSelectedArgs(args);
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if (!listener->IsInterested())
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return inner_matcher_.Matches(selected_args);
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PrintIndices(listener->stream());
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*listener << "are " << PrintToString(selected_args);
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StringMatchResultListener inner_listener;
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const bool match = inner_matcher_.MatchAndExplain(selected_args,
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&inner_listener);
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PrintIfNotEmpty(inner_listener.str(), listener->stream());
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return match;
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}
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virtual void DescribeTo(::std::ostream* os) const {
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*os << "are a tuple ";
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PrintIndices(os);
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inner_matcher_.DescribeTo(os);
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}
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virtual void DescribeNegationTo(::std::ostream* os) const {
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*os << "are a tuple ";
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PrintIndices(os);
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inner_matcher_.DescribeNegationTo(os);
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}
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private:
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static SelectedArgs GetSelectedArgs(ArgsTuple args) {
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return TupleFields<RawArgsTuple, $ks>::GetSelectedFields(args);
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}
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// Prints the indices of the selected fields.
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static void PrintIndices(::std::ostream* os) {
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*os << "whose fields (";
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const int indices[$n] = { $ks };
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for (int i = 0; i < $n; i++) {
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if (indices[i] < 0)
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break;
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if (i >= 1)
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*os << ", ";
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*os << "#" << indices[i];
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}
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*os << ") ";
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}
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const MonomorphicInnerMatcher inner_matcher_;
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GTEST_DISALLOW_ASSIGN_(ArgsMatcherImpl);
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};
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template <class InnerMatcher$for i [[, int k$i = -1]]>
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class ArgsMatcher {
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public:
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explicit ArgsMatcher(const InnerMatcher& inner_matcher)
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: inner_matcher_(inner_matcher) {}
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template <typename ArgsTuple>
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operator Matcher<ArgsTuple>() const {
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return MakeMatcher(new ArgsMatcherImpl<ArgsTuple, $ks>(inner_matcher_));
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}
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private:
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const InnerMatcher inner_matcher_;
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GTEST_DISALLOW_ASSIGN_(ArgsMatcher);
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};
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// A set of metafunctions for computing the result type of AllOf.
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// AllOf(m1, ..., mN) returns
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// AllOfResultN<decltype(m1), ..., decltype(mN)>::type.
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// Although AllOf isn't defined for one argument, AllOfResult1 is defined
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// to simplify the implementation.
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template <typename M1>
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struct AllOfResult1 {
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typedef M1 type;
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};
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$range i 1..n
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$range i 2..n
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$for i [[
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$range j 2..i
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$var m = i/2
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$range k 1..m
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$range t m+1..i
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template <typename M1$for j [[, typename M$j]]>
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struct AllOfResult$i {
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typedef BothOfMatcher<
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typename AllOfResult$m<$for k, [[M$k]]>::type,
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typename AllOfResult$(i-m)<$for t, [[M$t]]>::type
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> type;
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};
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]]
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// A set of metafunctions for computing the result type of AnyOf.
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// AnyOf(m1, ..., mN) returns
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// AnyOfResultN<decltype(m1), ..., decltype(mN)>::type.
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// Although AnyOf isn't defined for one argument, AnyOfResult1 is defined
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// to simplify the implementation.
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template <typename M1>
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struct AnyOfResult1 {
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typedef M1 type;
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};
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$range i 1..n
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$range i 2..n
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$for i [[
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$range j 2..i
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$var m = i/2
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$range k 1..m
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$range t m+1..i
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template <typename M1$for j [[, typename M$j]]>
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struct AnyOfResult$i {
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typedef EitherOfMatcher<
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typename AnyOfResult$m<$for k, [[M$k]]>::type,
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typename AnyOfResult$(i-m)<$for t, [[M$t]]>::type
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> type;
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};
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]]
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} // namespace internal
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// Args<N1, N2, ..., Nk>(a_matcher) matches a tuple if the selected
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// fields of it matches a_matcher. C++ doesn't support default
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// arguments for function templates, so we have to overload it.
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$range i 0..n
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$for i [[
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$range j 1..i
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template <$for j [[int k$j, ]]typename InnerMatcher>
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inline internal::ArgsMatcher<InnerMatcher$for j [[, k$j]]>
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Args(const InnerMatcher& matcher) {
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return internal::ArgsMatcher<InnerMatcher$for j [[, k$j]]>(matcher);
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}
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]]
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// ElementsAre(e_1, e_2, ... e_n) matches an STL-style container with
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// n elements, where the i-th element in the container must
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// match the i-th argument in the list. Each argument of
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// ElementsAre() can be either a value or a matcher. We support up to
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// $n arguments.
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//
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// The use of DecayArray in the implementation allows ElementsAre()
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// to accept string literals, whose type is const char[N], but we
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// want to treat them as const char*.
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//
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// NOTE: Since ElementsAre() cares about the order of the elements, it
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// must not be used with containers whose elements's order is
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// undefined (e.g. hash_map).
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$range i 0..n
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$for i [[
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$range j 1..i
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$if i>0 [[
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template <$for j, [[typename T$j]]>
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]]
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inline internal::ElementsAreMatcher<
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::testing::tuple<
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$for j, [[
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typename internal::DecayArray<T$j[[]]>::type]]> >
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ElementsAre($for j, [[const T$j& e$j]]) {
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typedef ::testing::tuple<
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$for j, [[
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typename internal::DecayArray<T$j[[]]>::type]]> Args;
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return internal::ElementsAreMatcher<Args>(Args($for j, [[e$j]]));
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}
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]]
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// UnorderedElementsAre(e_1, e_2, ..., e_n) is an ElementsAre extension
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// that matches n elements in any order. We support up to n=$n arguments.
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$range i 0..n
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$for i [[
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$range j 1..i
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$if i>0 [[
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template <$for j, [[typename T$j]]>
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]]
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inline internal::UnorderedElementsAreMatcher<
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::testing::tuple<
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$for j, [[
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typename internal::DecayArray<T$j[[]]>::type]]> >
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UnorderedElementsAre($for j, [[const T$j& e$j]]) {
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typedef ::testing::tuple<
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$for j, [[
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typename internal::DecayArray<T$j[[]]>::type]]> Args;
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return internal::UnorderedElementsAreMatcher<Args>(Args($for j, [[e$j]]));
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}
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]]
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// AllOf(m1, m2, ..., mk) matches any value that matches all of the given
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// sub-matchers. AllOf is called fully qualified to prevent ADL from firing.
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$range i 2..n
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$for i [[
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$range j 1..i
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$var m = i/2
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$range k 1..m
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$range t m+1..i
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template <$for j, [[typename M$j]]>
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inline typename internal::AllOfResult$i<$for j, [[M$j]]>::type
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AllOf($for j, [[M$j m$j]]) {
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return typename internal::AllOfResult$i<$for j, [[M$j]]>::type(
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$if m == 1 [[m1]] $else [[::testing::AllOf($for k, [[m$k]])]],
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$if m+1 == i [[m$i]] $else [[::testing::AllOf($for t, [[m$t]])]]);
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}
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]]
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// AnyOf(m1, m2, ..., mk) matches any value that matches any of the given
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// sub-matchers. AnyOf is called fully qualified to prevent ADL from firing.
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$range i 2..n
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$for i [[
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$range j 1..i
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$var m = i/2
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$range k 1..m
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$range t m+1..i
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template <$for j, [[typename M$j]]>
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inline typename internal::AnyOfResult$i<$for j, [[M$j]]>::type
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AnyOf($for j, [[M$j m$j]]) {
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return typename internal::AnyOfResult$i<$for j, [[M$j]]>::type(
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$if m == 1 [[m1]] $else [[::testing::AnyOf($for k, [[m$k]])]],
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$if m+1 == i [[m$i]] $else [[::testing::AnyOf($for t, [[m$t]])]]);
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}
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]]
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} // namespace testing
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$$ } // This Pump meta comment fixes auto-indentation in Emacs. It will not
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$$ // show up in the generated code.
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// The MATCHER* family of macros can be used in a namespace scope to
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// define custom matchers easily.
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//
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// Basic Usage
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// ===========
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//
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// The syntax
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//
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// MATCHER(name, description_string) { statements; }
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//
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// defines a matcher with the given name that executes the statements,
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// which must return a bool to indicate if the match succeeds. Inside
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// the statements, you can refer to the value being matched by 'arg',
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// and refer to its type by 'arg_type'.
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//
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// The description string documents what the matcher does, and is used
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// to generate the failure message when the match fails. Since a
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// MATCHER() is usually defined in a header file shared by multiple
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// C++ source files, we require the description to be a C-string
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// literal to avoid possible side effects. It can be empty, in which
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// case we'll use the sequence of words in the matcher name as the
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// description.
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//
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// For example:
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//
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// MATCHER(IsEven, "") { return (arg % 2) == 0; }
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//
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// allows you to write
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//
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// // Expects mock_foo.Bar(n) to be called where n is even.
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// EXPECT_CALL(mock_foo, Bar(IsEven()));
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//
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// or,
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//
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// // Verifies that the value of some_expression is even.
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// EXPECT_THAT(some_expression, IsEven());
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//
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// If the above assertion fails, it will print something like:
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//
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// Value of: some_expression
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// Expected: is even
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// Actual: 7
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//
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// where the description "is even" is automatically calculated from the
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// matcher name IsEven.
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//
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// Argument Type
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// =============
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//
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// Note that the type of the value being matched (arg_type) is
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// determined by the context in which you use the matcher and is
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// supplied to you by the compiler, so you don't need to worry about
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// declaring it (nor can you). This allows the matcher to be
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// polymorphic. For example, IsEven() can be used to match any type
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// where the value of "(arg % 2) == 0" can be implicitly converted to
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// a bool. In the "Bar(IsEven())" example above, if method Bar()
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// takes an int, 'arg_type' will be int; if it takes an unsigned long,
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// 'arg_type' will be unsigned long; and so on.
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//
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// Parameterizing Matchers
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// =======================
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//
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// Sometimes you'll want to parameterize the matcher. For that you
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// can use another macro:
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//
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// MATCHER_P(name, param_name, description_string) { statements; }
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//
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// For example:
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//
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// MATCHER_P(HasAbsoluteValue, value, "") { return abs(arg) == value; }
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//
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// will allow you to write:
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//
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// EXPECT_THAT(Blah("a"), HasAbsoluteValue(n));
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//
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// which may lead to this message (assuming n is 10):
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//
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// Value of: Blah("a")
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// Expected: has absolute value 10
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// Actual: -9
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//
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// Note that both the matcher description and its parameter are
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// printed, making the message human-friendly.
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//
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// In the matcher definition body, you can write 'foo_type' to
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// reference the type of a parameter named 'foo'. For example, in the
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// body of MATCHER_P(HasAbsoluteValue, value) above, you can write
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// 'value_type' to refer to the type of 'value'.
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//
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// We also provide MATCHER_P2, MATCHER_P3, ..., up to MATCHER_P$n to
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// support multi-parameter matchers.
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//
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// Describing Parameterized Matchers
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// =================================
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//
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// The last argument to MATCHER*() is a string-typed expression. The
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// expression can reference all of the matcher's parameters and a
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// special bool-typed variable named 'negation'. When 'negation' is
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// false, the expression should evaluate to the matcher's description;
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// otherwise it should evaluate to the description of the negation of
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// the matcher. For example,
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//
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// using testing::PrintToString;
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//
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// MATCHER_P2(InClosedRange, low, hi,
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// string(negation ? "is not" : "is") + " in range [" +
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// PrintToString(low) + ", " + PrintToString(hi) + "]") {
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// return low <= arg && arg <= hi;
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// }
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// ...
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// EXPECT_THAT(3, InClosedRange(4, 6));
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// EXPECT_THAT(3, Not(InClosedRange(2, 4)));
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//
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// would generate two failures that contain the text:
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//
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// Expected: is in range [4, 6]
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// ...
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// Expected: is not in range [2, 4]
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//
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// If you specify "" as the description, the failure message will
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// contain the sequence of words in the matcher name followed by the
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// parameter values printed as a tuple. For example,
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//
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// MATCHER_P2(InClosedRange, low, hi, "") { ... }
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// ...
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// EXPECT_THAT(3, InClosedRange(4, 6));
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// EXPECT_THAT(3, Not(InClosedRange(2, 4)));
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//
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// would generate two failures that contain the text:
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//
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// Expected: in closed range (4, 6)
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// ...
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// Expected: not (in closed range (2, 4))
|
|
//
|
|
// Types of Matcher Parameters
|
|
// ===========================
|
|
//
|
|
// For the purpose of typing, you can view
|
|
//
|
|
// MATCHER_Pk(Foo, p1, ..., pk, description_string) { ... }
|
|
//
|
|
// as shorthand for
|
|
//
|
|
// template <typename p1_type, ..., typename pk_type>
|
|
// FooMatcherPk<p1_type, ..., pk_type>
|
|
// Foo(p1_type p1, ..., pk_type pk) { ... }
|
|
//
|
|
// When you write Foo(v1, ..., vk), the compiler infers the types of
|
|
// the parameters v1, ..., and vk for you. If you are not happy with
|
|
// the result of the type inference, you can specify the types by
|
|
// explicitly instantiating the template, as in Foo<long, bool>(5,
|
|
// false). As said earlier, you don't get to (or need to) specify
|
|
// 'arg_type' as that's determined by the context in which the matcher
|
|
// is used. You can assign the result of expression Foo(p1, ..., pk)
|
|
// to a variable of type FooMatcherPk<p1_type, ..., pk_type>. This
|
|
// can be useful when composing matchers.
|
|
//
|
|
// While you can instantiate a matcher template with reference types,
|
|
// passing the parameters by pointer usually makes your code more
|
|
// readable. If, however, you still want to pass a parameter by
|
|
// reference, be aware that in the failure message generated by the
|
|
// matcher you will see the value of the referenced object but not its
|
|
// address.
|
|
//
|
|
// Explaining Match Results
|
|
// ========================
|
|
//
|
|
// Sometimes the matcher description alone isn't enough to explain why
|
|
// the match has failed or succeeded. For example, when expecting a
|
|
// long string, it can be very helpful to also print the diff between
|
|
// the expected string and the actual one. To achieve that, you can
|
|
// optionally stream additional information to a special variable
|
|
// named result_listener, whose type is a pointer to class
|
|
// MatchResultListener:
|
|
//
|
|
// MATCHER_P(EqualsLongString, str, "") {
|
|
// if (arg == str) return true;
|
|
//
|
|
// *result_listener << "the difference: "
|
|
/// << DiffStrings(str, arg);
|
|
// return false;
|
|
// }
|
|
//
|
|
// Overloading Matchers
|
|
// ====================
|
|
//
|
|
// You can overload matchers with different numbers of parameters:
|
|
//
|
|
// MATCHER_P(Blah, a, description_string1) { ... }
|
|
// MATCHER_P2(Blah, a, b, description_string2) { ... }
|
|
//
|
|
// Caveats
|
|
// =======
|
|
//
|
|
// When defining a new matcher, you should also consider implementing
|
|
// MatcherInterface or using MakePolymorphicMatcher(). These
|
|
// approaches require more work than the MATCHER* macros, but also
|
|
// give you more control on the types of the value being matched and
|
|
// the matcher parameters, which may leads to better compiler error
|
|
// messages when the matcher is used wrong. They also allow
|
|
// overloading matchers based on parameter types (as opposed to just
|
|
// based on the number of parameters).
|
|
//
|
|
// MATCHER*() can only be used in a namespace scope. The reason is
|
|
// that C++ doesn't yet allow function-local types to be used to
|
|
// instantiate templates. The up-coming C++0x standard will fix this.
|
|
// Once that's done, we'll consider supporting using MATCHER*() inside
|
|
// a function.
|
|
//
|
|
// More Information
|
|
// ================
|
|
//
|
|
// To learn more about using these macros, please search for 'MATCHER'
|
|
// on http://code.google.com/p/googlemock/wiki/CookBook.
|
|
|
|
$range i 0..n
|
|
$for i
|
|
|
|
[[
|
|
$var macro_name = [[$if i==0 [[MATCHER]] $elif i==1 [[MATCHER_P]]
|
|
$else [[MATCHER_P$i]]]]
|
|
$var class_name = [[name##Matcher[[$if i==0 [[]] $elif i==1 [[P]]
|
|
$else [[P$i]]]]]]
|
|
$range j 0..i-1
|
|
$var template = [[$if i==0 [[]] $else [[
|
|
|
|
template <$for j, [[typename p$j##_type]]>\
|
|
]]]]
|
|
$var ctor_param_list = [[$for j, [[p$j##_type gmock_p$j]]]]
|
|
$var impl_ctor_param_list = [[$for j, [[p$j##_type gmock_p$j]]]]
|
|
$var impl_inits = [[$if i==0 [[]] $else [[ : $for j, [[p$j(gmock_p$j)]]]]]]
|
|
$var inits = [[$if i==0 [[]] $else [[ : $for j, [[p$j(gmock_p$j)]]]]]]
|
|
$var params = [[$for j, [[p$j]]]]
|
|
$var param_types = [[$if i==0 [[]] $else [[<$for j, [[p$j##_type]]>]]]]
|
|
$var param_types_and_names = [[$for j, [[p$j##_type p$j]]]]
|
|
$var param_field_decls = [[$for j
|
|
[[
|
|
|
|
p$j##_type p$j;\
|
|
]]]]
|
|
$var param_field_decls2 = [[$for j
|
|
[[
|
|
|
|
p$j##_type p$j;\
|
|
]]]]
|
|
|
|
#define $macro_name(name$for j [[, p$j]], description)\$template
|
|
class $class_name {\
|
|
public:\
|
|
template <typename arg_type>\
|
|
class gmock_Impl : public ::testing::MatcherInterface<arg_type> {\
|
|
public:\
|
|
[[$if i==1 [[explicit ]]]]gmock_Impl($impl_ctor_param_list)\
|
|
$impl_inits {}\
|
|
virtual bool MatchAndExplain(\
|
|
arg_type arg, ::testing::MatchResultListener* result_listener) const;\
|
|
virtual void DescribeTo(::std::ostream* gmock_os) const {\
|
|
*gmock_os << FormatDescription(false);\
|
|
}\
|
|
virtual void DescribeNegationTo(::std::ostream* gmock_os) const {\
|
|
*gmock_os << FormatDescription(true);\
|
|
}\$param_field_decls
|
|
private:\
|
|
::testing::internal::string FormatDescription(bool negation) const {\
|
|
const ::testing::internal::string gmock_description = (description);\
|
|
if (!gmock_description.empty())\
|
|
return gmock_description;\
|
|
return ::testing::internal::FormatMatcherDescription(\
|
|
negation, #name, \
|
|
::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
|
|
::testing::tuple<$for j, [[p$j##_type]]>($for j, [[p$j]])));\
|
|
}\
|
|
GTEST_DISALLOW_ASSIGN_(gmock_Impl);\
|
|
};\
|
|
template <typename arg_type>\
|
|
operator ::testing::Matcher<arg_type>() const {\
|
|
return ::testing::Matcher<arg_type>(\
|
|
new gmock_Impl<arg_type>($params));\
|
|
}\
|
|
[[$if i==1 [[explicit ]]]]$class_name($ctor_param_list)$inits {\
|
|
}\$param_field_decls2
|
|
private:\
|
|
GTEST_DISALLOW_ASSIGN_($class_name);\
|
|
};\$template
|
|
inline $class_name$param_types name($param_types_and_names) {\
|
|
return $class_name$param_types($params);\
|
|
}\$template
|
|
template <typename arg_type>\
|
|
bool $class_name$param_types::gmock_Impl<arg_type>::MatchAndExplain(\
|
|
arg_type arg, \
|
|
::testing::MatchResultListener* result_listener GTEST_ATTRIBUTE_UNUSED_)\
|
|
const
|
|
]]
|
|
|
|
|
|
#endif // GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_MATCHERS_H_
|