1 |
2 |
jamieiles |
// Copyright 2007, Google Inc.
|
2 |
|
|
// All rights reserved.
|
3 |
|
|
//
|
4 |
|
|
// Redistribution and use in source and binary forms, with or without
|
5 |
|
|
// modification, are permitted provided that the following conditions are
|
6 |
|
|
// met:
|
7 |
|
|
//
|
8 |
|
|
// * Redistributions of source code must retain the above copyright
|
9 |
|
|
// notice, this list of conditions and the following disclaimer.
|
10 |
|
|
// * Redistributions in binary form must reproduce the above
|
11 |
|
|
// copyright notice, this list of conditions and the following disclaimer
|
12 |
|
|
// in the documentation and/or other materials provided with the
|
13 |
|
|
// distribution.
|
14 |
|
|
// * Neither the name of Google Inc. nor the names of its
|
15 |
|
|
// contributors may be used to endorse or promote products derived from
|
16 |
|
|
// this software without specific prior written permission.
|
17 |
|
|
//
|
18 |
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
19 |
|
|
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
20 |
|
|
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
21 |
|
|
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
22 |
|
|
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
23 |
|
|
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
24 |
|
|
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
25 |
|
|
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
26 |
|
|
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
27 |
|
|
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
28 |
|
|
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
29 |
|
|
//
|
30 |
|
|
// Author: wan@google.com (Zhanyong Wan)
|
31 |
|
|
|
32 |
|
|
// Google Mock - a framework for writing C++ mock classes.
|
33 |
|
|
//
|
34 |
|
|
// This file implements Matcher<const string&>, Matcher<string>, and
|
35 |
|
|
// utilities for defining matchers.
|
36 |
|
|
|
37 |
|
|
#include "gmock/gmock-matchers.h"
|
38 |
|
|
#include "gmock/gmock-generated-matchers.h"
|
39 |
|
|
|
40 |
|
|
#include <string.h>
|
41 |
|
|
#include <sstream>
|
42 |
|
|
#include <string>
|
43 |
|
|
|
44 |
|
|
namespace testing {
|
45 |
|
|
|
46 |
|
|
// Constructs a matcher that matches a const string& whose value is
|
47 |
|
|
// equal to s.
|
48 |
|
|
Matcher<const internal::string&>::Matcher(const internal::string& s) {
|
49 |
|
|
*this = Eq(s);
|
50 |
|
|
}
|
51 |
|
|
|
52 |
|
|
// Constructs a matcher that matches a const string& whose value is
|
53 |
|
|
// equal to s.
|
54 |
|
|
Matcher<const internal::string&>::Matcher(const char* s) {
|
55 |
|
|
*this = Eq(internal::string(s));
|
56 |
|
|
}
|
57 |
|
|
|
58 |
|
|
// Constructs a matcher that matches a string whose value is equal to s.
|
59 |
|
|
Matcher<internal::string>::Matcher(const internal::string& s) { *this = Eq(s); }
|
60 |
|
|
|
61 |
|
|
// Constructs a matcher that matches a string whose value is equal to s.
|
62 |
|
|
Matcher<internal::string>::Matcher(const char* s) {
|
63 |
|
|
*this = Eq(internal::string(s));
|
64 |
|
|
}
|
65 |
|
|
|
66 |
|
|
#if GTEST_HAS_STRING_PIECE_
|
67 |
|
|
// Constructs a matcher that matches a const StringPiece& whose value is
|
68 |
|
|
// equal to s.
|
69 |
|
|
Matcher<const StringPiece&>::Matcher(const internal::string& s) {
|
70 |
|
|
*this = Eq(s);
|
71 |
|
|
}
|
72 |
|
|
|
73 |
|
|
// Constructs a matcher that matches a const StringPiece& whose value is
|
74 |
|
|
// equal to s.
|
75 |
|
|
Matcher<const StringPiece&>::Matcher(const char* s) {
|
76 |
|
|
*this = Eq(internal::string(s));
|
77 |
|
|
}
|
78 |
|
|
|
79 |
|
|
// Constructs a matcher that matches a const StringPiece& whose value is
|
80 |
|
|
// equal to s.
|
81 |
|
|
Matcher<const StringPiece&>::Matcher(StringPiece s) {
|
82 |
|
|
*this = Eq(s.ToString());
|
83 |
|
|
}
|
84 |
|
|
|
85 |
|
|
// Constructs a matcher that matches a StringPiece whose value is equal to s.
|
86 |
|
|
Matcher<StringPiece>::Matcher(const internal::string& s) {
|
87 |
|
|
*this = Eq(s);
|
88 |
|
|
}
|
89 |
|
|
|
90 |
|
|
// Constructs a matcher that matches a StringPiece whose value is equal to s.
|
91 |
|
|
Matcher<StringPiece>::Matcher(const char* s) {
|
92 |
|
|
*this = Eq(internal::string(s));
|
93 |
|
|
}
|
94 |
|
|
|
95 |
|
|
// Constructs a matcher that matches a StringPiece whose value is equal to s.
|
96 |
|
|
Matcher<StringPiece>::Matcher(StringPiece s) {
|
97 |
|
|
*this = Eq(s.ToString());
|
98 |
|
|
}
|
99 |
|
|
#endif // GTEST_HAS_STRING_PIECE_
|
100 |
|
|
|
101 |
|
|
namespace internal {
|
102 |
|
|
|
103 |
|
|
// Joins a vector of strings as if they are fields of a tuple; returns
|
104 |
|
|
// the joined string.
|
105 |
|
|
GTEST_API_ string JoinAsTuple(const Strings& fields) {
|
106 |
|
|
switch (fields.size()) {
|
107 |
|
|
case 0:
|
108 |
|
|
return "";
|
109 |
|
|
case 1:
|
110 |
|
|
return fields[0];
|
111 |
|
|
default:
|
112 |
|
|
string result = "(" + fields[0];
|
113 |
|
|
for (size_t i = 1; i < fields.size(); i++) {
|
114 |
|
|
result += ", ";
|
115 |
|
|
result += fields[i];
|
116 |
|
|
}
|
117 |
|
|
result += ")";
|
118 |
|
|
return result;
|
119 |
|
|
}
|
120 |
|
|
}
|
121 |
|
|
|
122 |
|
|
// Returns the description for a matcher defined using the MATCHER*()
|
123 |
|
|
// macro where the user-supplied description string is "", if
|
124 |
|
|
// 'negation' is false; otherwise returns the description of the
|
125 |
|
|
// negation of the matcher. 'param_values' contains a list of strings
|
126 |
|
|
// that are the print-out of the matcher's parameters.
|
127 |
|
|
GTEST_API_ string FormatMatcherDescription(bool negation,
|
128 |
|
|
const char* matcher_name,
|
129 |
|
|
const Strings& param_values) {
|
130 |
|
|
string result = ConvertIdentifierNameToWords(matcher_name);
|
131 |
|
|
if (param_values.size() >= 1)
|
132 |
|
|
result += " " + JoinAsTuple(param_values);
|
133 |
|
|
return negation ? "not (" + result + ")" : result;
|
134 |
|
|
}
|
135 |
|
|
|
136 |
|
|
// FindMaxBipartiteMatching and its helper class.
|
137 |
|
|
//
|
138 |
|
|
// Uses the well-known Ford-Fulkerson max flow method to find a maximum
|
139 |
|
|
// bipartite matching. Flow is considered to be from left to right.
|
140 |
|
|
// There is an implicit source node that is connected to all of the left
|
141 |
|
|
// nodes, and an implicit sink node that is connected to all of the
|
142 |
|
|
// right nodes. All edges have unit capacity.
|
143 |
|
|
//
|
144 |
|
|
// Neither the flow graph nor the residual flow graph are represented
|
145 |
|
|
// explicitly. Instead, they are implied by the information in 'graph' and
|
146 |
|
|
// a vector<int> called 'left_' whose elements are initialized to the
|
147 |
|
|
// value kUnused. This represents the initial state of the algorithm,
|
148 |
|
|
// where the flow graph is empty, and the residual flow graph has the
|
149 |
|
|
// following edges:
|
150 |
|
|
// - An edge from source to each left_ node
|
151 |
|
|
// - An edge from each right_ node to sink
|
152 |
|
|
// - An edge from each left_ node to each right_ node, if the
|
153 |
|
|
// corresponding edge exists in 'graph'.
|
154 |
|
|
//
|
155 |
|
|
// When the TryAugment() method adds a flow, it sets left_[l] = r for some
|
156 |
|
|
// nodes l and r. This induces the following changes:
|
157 |
|
|
// - The edges (source, l), (l, r), and (r, sink) are added to the
|
158 |
|
|
// flow graph.
|
159 |
|
|
// - The same three edges are removed from the residual flow graph.
|
160 |
|
|
// - The reverse edges (l, source), (r, l), and (sink, r) are added
|
161 |
|
|
// to the residual flow graph, which is a directional graph
|
162 |
|
|
// representing unused flow capacity.
|
163 |
|
|
//
|
164 |
|
|
// When the method augments a flow (moving left_[l] from some r1 to some
|
165 |
|
|
// other r2), this can be thought of as "undoing" the above steps with
|
166 |
|
|
// respect to r1 and "redoing" them with respect to r2.
|
167 |
|
|
//
|
168 |
|
|
// It bears repeating that the flow graph and residual flow graph are
|
169 |
|
|
// never represented explicitly, but can be derived by looking at the
|
170 |
|
|
// information in 'graph' and in left_.
|
171 |
|
|
//
|
172 |
|
|
// As an optimization, there is a second vector<int> called right_ which
|
173 |
|
|
// does not provide any new information. Instead, it enables more
|
174 |
|
|
// efficient queries about edges entering or leaving the right-side nodes
|
175 |
|
|
// of the flow or residual flow graphs. The following invariants are
|
176 |
|
|
// maintained:
|
177 |
|
|
//
|
178 |
|
|
// left[l] == kUnused or right[left[l]] == l
|
179 |
|
|
// right[r] == kUnused or left[right[r]] == r
|
180 |
|
|
//
|
181 |
|
|
// . [ source ] .
|
182 |
|
|
// . ||| .
|
183 |
|
|
// . ||| .
|
184 |
|
|
// . ||\--> left[0]=1 ---\ right[0]=-1 ----\ .
|
185 |
|
|
// . || | | .
|
186 |
|
|
// . |\---> left[1]=-1 \--> right[1]=0 ---\| .
|
187 |
|
|
// . | || .
|
188 |
|
|
// . \----> left[2]=2 ------> right[2]=2 --\|| .
|
189 |
|
|
// . ||| .
|
190 |
|
|
// . elements matchers vvv .
|
191 |
|
|
// . [ sink ] .
|
192 |
|
|
//
|
193 |
|
|
// See Also:
|
194 |
|
|
// [1] Cormen, et al (2001). "Section 26.2: The Ford-Fulkerson method".
|
195 |
|
|
// "Introduction to Algorithms (Second ed.)", pp. 651-664.
|
196 |
|
|
// [2] "Ford-Fulkerson algorithm", Wikipedia,
|
197 |
|
|
// 'http://en.wikipedia.org/wiki/Ford%E2%80%93Fulkerson_algorithm'
|
198 |
|
|
class MaxBipartiteMatchState {
|
199 |
|
|
public:
|
200 |
|
|
explicit MaxBipartiteMatchState(const MatchMatrix& graph)
|
201 |
|
|
: graph_(&graph),
|
202 |
|
|
left_(graph_->LhsSize(), kUnused),
|
203 |
|
|
right_(graph_->RhsSize(), kUnused) {
|
204 |
|
|
}
|
205 |
|
|
|
206 |
|
|
// Returns the edges of a maximal match, each in the form {left, right}.
|
207 |
|
|
ElementMatcherPairs Compute() {
|
208 |
|
|
// 'seen' is used for path finding { 0: unseen, 1: seen }.
|
209 |
|
|
::std::vector<char> seen;
|
210 |
|
|
// Searches the residual flow graph for a path from each left node to
|
211 |
|
|
// the sink in the residual flow graph, and if one is found, add flow
|
212 |
|
|
// to the graph. It's okay to search through the left nodes once. The
|
213 |
|
|
// edge from the implicit source node to each previously-visited left
|
214 |
|
|
// node will have flow if that left node has any path to the sink
|
215 |
|
|
// whatsoever. Subsequent augmentations can only add flow to the
|
216 |
|
|
// network, and cannot take away that previous flow unit from the source.
|
217 |
|
|
// Since the source-to-left edge can only carry one flow unit (or,
|
218 |
|
|
// each element can be matched to only one matcher), there is no need
|
219 |
|
|
// to visit the left nodes more than once looking for augmented paths.
|
220 |
|
|
// The flow is known to be possible or impossible by looking at the
|
221 |
|
|
// node once.
|
222 |
|
|
for (size_t ilhs = 0; ilhs < graph_->LhsSize(); ++ilhs) {
|
223 |
|
|
// Reset the path-marking vector and try to find a path from
|
224 |
|
|
// source to sink starting at the left_[ilhs] node.
|
225 |
|
|
GTEST_CHECK_(left_[ilhs] == kUnused)
|
226 |
|
|
<< "ilhs: " << ilhs << ", left_[ilhs]: " << left_[ilhs];
|
227 |
|
|
// 'seen' initialized to 'graph_->RhsSize()' copies of 0.
|
228 |
|
|
seen.assign(graph_->RhsSize(), 0);
|
229 |
|
|
TryAugment(ilhs, &seen);
|
230 |
|
|
}
|
231 |
|
|
ElementMatcherPairs result;
|
232 |
|
|
for (size_t ilhs = 0; ilhs < left_.size(); ++ilhs) {
|
233 |
|
|
size_t irhs = left_[ilhs];
|
234 |
|
|
if (irhs == kUnused) continue;
|
235 |
|
|
result.push_back(ElementMatcherPair(ilhs, irhs));
|
236 |
|
|
}
|
237 |
|
|
return result;
|
238 |
|
|
}
|
239 |
|
|
|
240 |
|
|
private:
|
241 |
|
|
static const size_t kUnused = static_cast<size_t>(-1);
|
242 |
|
|
|
243 |
|
|
// Perform a depth-first search from left node ilhs to the sink. If a
|
244 |
|
|
// path is found, flow is added to the network by linking the left and
|
245 |
|
|
// right vector elements corresponding each segment of the path.
|
246 |
|
|
// Returns true if a path to sink was found, which means that a unit of
|
247 |
|
|
// flow was added to the network. The 'seen' vector elements correspond
|
248 |
|
|
// to right nodes and are marked to eliminate cycles from the search.
|
249 |
|
|
//
|
250 |
|
|
// Left nodes will only be explored at most once because they
|
251 |
|
|
// are accessible from at most one right node in the residual flow
|
252 |
|
|
// graph.
|
253 |
|
|
//
|
254 |
|
|
// Note that left_[ilhs] is the only element of left_ that TryAugment will
|
255 |
|
|
// potentially transition from kUnused to another value. Any other
|
256 |
|
|
// left_ element holding kUnused before TryAugment will be holding it
|
257 |
|
|
// when TryAugment returns.
|
258 |
|
|
//
|
259 |
|
|
bool TryAugment(size_t ilhs, ::std::vector<char>* seen) {
|
260 |
|
|
for (size_t irhs = 0; irhs < graph_->RhsSize(); ++irhs) {
|
261 |
|
|
if ((*seen)[irhs])
|
262 |
|
|
continue;
|
263 |
|
|
if (!graph_->HasEdge(ilhs, irhs))
|
264 |
|
|
continue;
|
265 |
|
|
// There's an available edge from ilhs to irhs.
|
266 |
|
|
(*seen)[irhs] = 1;
|
267 |
|
|
// Next a search is performed to determine whether
|
268 |
|
|
// this edge is a dead end or leads to the sink.
|
269 |
|
|
//
|
270 |
|
|
// right_[irhs] == kUnused means that there is residual flow from
|
271 |
|
|
// right node irhs to the sink, so we can use that to finish this
|
272 |
|
|
// flow path and return success.
|
273 |
|
|
//
|
274 |
|
|
// Otherwise there is residual flow to some ilhs. We push flow
|
275 |
|
|
// along that path and call ourselves recursively to see if this
|
276 |
|
|
// ultimately leads to sink.
|
277 |
|
|
if (right_[irhs] == kUnused || TryAugment(right_[irhs], seen)) {
|
278 |
|
|
// Add flow from left_[ilhs] to right_[irhs].
|
279 |
|
|
left_[ilhs] = irhs;
|
280 |
|
|
right_[irhs] = ilhs;
|
281 |
|
|
return true;
|
282 |
|
|
}
|
283 |
|
|
}
|
284 |
|
|
return false;
|
285 |
|
|
}
|
286 |
|
|
|
287 |
|
|
const MatchMatrix* graph_; // not owned
|
288 |
|
|
// Each element of the left_ vector represents a left hand side node
|
289 |
|
|
// (i.e. an element) and each element of right_ is a right hand side
|
290 |
|
|
// node (i.e. a matcher). The values in the left_ vector indicate
|
291 |
|
|
// outflow from that node to a node on the the right_ side. The values
|
292 |
|
|
// in the right_ indicate inflow, and specify which left_ node is
|
293 |
|
|
// feeding that right_ node, if any. For example, left_[3] == 1 means
|
294 |
|
|
// there's a flow from element #3 to matcher #1. Such a flow would also
|
295 |
|
|
// be redundantly represented in the right_ vector as right_[1] == 3.
|
296 |
|
|
// Elements of left_ and right_ are either kUnused or mutually
|
297 |
|
|
// referent. Mutually referent means that left_[right_[i]] = i and
|
298 |
|
|
// right_[left_[i]] = i.
|
299 |
|
|
::std::vector<size_t> left_;
|
300 |
|
|
::std::vector<size_t> right_;
|
301 |
|
|
|
302 |
|
|
GTEST_DISALLOW_ASSIGN_(MaxBipartiteMatchState);
|
303 |
|
|
};
|
304 |
|
|
|
305 |
|
|
const size_t MaxBipartiteMatchState::kUnused;
|
306 |
|
|
|
307 |
|
|
GTEST_API_ ElementMatcherPairs
|
308 |
|
|
FindMaxBipartiteMatching(const MatchMatrix& g) {
|
309 |
|
|
return MaxBipartiteMatchState(g).Compute();
|
310 |
|
|
}
|
311 |
|
|
|
312 |
|
|
static void LogElementMatcherPairVec(const ElementMatcherPairs& pairs,
|
313 |
|
|
::std::ostream* stream) {
|
314 |
|
|
typedef ElementMatcherPairs::const_iterator Iter;
|
315 |
|
|
::std::ostream& os = *stream;
|
316 |
|
|
os << "{";
|
317 |
|
|
const char *sep = "";
|
318 |
|
|
for (Iter it = pairs.begin(); it != pairs.end(); ++it) {
|
319 |
|
|
os << sep << "\n ("
|
320 |
|
|
<< "element #" << it->first << ", "
|
321 |
|
|
<< "matcher #" << it->second << ")";
|
322 |
|
|
sep = ",";
|
323 |
|
|
}
|
324 |
|
|
os << "\n}";
|
325 |
|
|
}
|
326 |
|
|
|
327 |
|
|
// Tries to find a pairing, and explains the result.
|
328 |
|
|
GTEST_API_ bool FindPairing(const MatchMatrix& matrix,
|
329 |
|
|
MatchResultListener* listener) {
|
330 |
|
|
ElementMatcherPairs matches = FindMaxBipartiteMatching(matrix);
|
331 |
|
|
|
332 |
|
|
size_t max_flow = matches.size();
|
333 |
|
|
bool result = (max_flow == matrix.RhsSize());
|
334 |
|
|
|
335 |
|
|
if (!result) {
|
336 |
|
|
if (listener->IsInterested()) {
|
337 |
|
|
*listener << "where no permutation of the elements can "
|
338 |
|
|
"satisfy all matchers, and the closest match is "
|
339 |
|
|
<< max_flow << " of " << matrix.RhsSize()
|
340 |
|
|
<< " matchers with the pairings:\n";
|
341 |
|
|
LogElementMatcherPairVec(matches, listener->stream());
|
342 |
|
|
}
|
343 |
|
|
return false;
|
344 |
|
|
}
|
345 |
|
|
|
346 |
|
|
if (matches.size() > 1) {
|
347 |
|
|
if (listener->IsInterested()) {
|
348 |
|
|
const char *sep = "where:\n";
|
349 |
|
|
for (size_t mi = 0; mi < matches.size(); ++mi) {
|
350 |
|
|
*listener << sep << " - element #" << matches[mi].first
|
351 |
|
|
<< " is matched by matcher #" << matches[mi].second;
|
352 |
|
|
sep = ",\n";
|
353 |
|
|
}
|
354 |
|
|
}
|
355 |
|
|
}
|
356 |
|
|
return true;
|
357 |
|
|
}
|
358 |
|
|
|
359 |
|
|
bool MatchMatrix::NextGraph() {
|
360 |
|
|
for (size_t ilhs = 0; ilhs < LhsSize(); ++ilhs) {
|
361 |
|
|
for (size_t irhs = 0; irhs < RhsSize(); ++irhs) {
|
362 |
|
|
char& b = matched_[SpaceIndex(ilhs, irhs)];
|
363 |
|
|
if (!b) {
|
364 |
|
|
b = 1;
|
365 |
|
|
return true;
|
366 |
|
|
}
|
367 |
|
|
b = 0;
|
368 |
|
|
}
|
369 |
|
|
}
|
370 |
|
|
return false;
|
371 |
|
|
}
|
372 |
|
|
|
373 |
|
|
void MatchMatrix::Randomize() {
|
374 |
|
|
for (size_t ilhs = 0; ilhs < LhsSize(); ++ilhs) {
|
375 |
|
|
for (size_t irhs = 0; irhs < RhsSize(); ++irhs) {
|
376 |
|
|
char& b = matched_[SpaceIndex(ilhs, irhs)];
|
377 |
|
|
b = static_cast<char>(rand() & 1); // NOLINT
|
378 |
|
|
}
|
379 |
|
|
}
|
380 |
|
|
}
|
381 |
|
|
|
382 |
|
|
string MatchMatrix::DebugString() const {
|
383 |
|
|
::std::stringstream ss;
|
384 |
|
|
const char *sep = "";
|
385 |
|
|
for (size_t i = 0; i < LhsSize(); ++i) {
|
386 |
|
|
ss << sep;
|
387 |
|
|
for (size_t j = 0; j < RhsSize(); ++j) {
|
388 |
|
|
ss << HasEdge(i, j);
|
389 |
|
|
}
|
390 |
|
|
sep = ";";
|
391 |
|
|
}
|
392 |
|
|
return ss.str();
|
393 |
|
|
}
|
394 |
|
|
|
395 |
|
|
void UnorderedElementsAreMatcherImplBase::DescribeToImpl(
|
396 |
|
|
::std::ostream* os) const {
|
397 |
|
|
if (matcher_describers_.empty()) {
|
398 |
|
|
*os << "is empty";
|
399 |
|
|
return;
|
400 |
|
|
}
|
401 |
|
|
if (matcher_describers_.size() == 1) {
|
402 |
|
|
*os << "has " << Elements(1) << " and that element ";
|
403 |
|
|
matcher_describers_[0]->DescribeTo(os);
|
404 |
|
|
return;
|
405 |
|
|
}
|
406 |
|
|
*os << "has " << Elements(matcher_describers_.size())
|
407 |
|
|
<< " and there exists some permutation of elements such that:\n";
|
408 |
|
|
const char* sep = "";
|
409 |
|
|
for (size_t i = 0; i != matcher_describers_.size(); ++i) {
|
410 |
|
|
*os << sep << " - element #" << i << " ";
|
411 |
|
|
matcher_describers_[i]->DescribeTo(os);
|
412 |
|
|
sep = ", and\n";
|
413 |
|
|
}
|
414 |
|
|
}
|
415 |
|
|
|
416 |
|
|
void UnorderedElementsAreMatcherImplBase::DescribeNegationToImpl(
|
417 |
|
|
::std::ostream* os) const {
|
418 |
|
|
if (matcher_describers_.empty()) {
|
419 |
|
|
*os << "isn't empty";
|
420 |
|
|
return;
|
421 |
|
|
}
|
422 |
|
|
if (matcher_describers_.size() == 1) {
|
423 |
|
|
*os << "doesn't have " << Elements(1)
|
424 |
|
|
<< ", or has " << Elements(1) << " that ";
|
425 |
|
|
matcher_describers_[0]->DescribeNegationTo(os);
|
426 |
|
|
return;
|
427 |
|
|
}
|
428 |
|
|
*os << "doesn't have " << Elements(matcher_describers_.size())
|
429 |
|
|
<< ", or there exists no permutation of elements such that:\n";
|
430 |
|
|
const char* sep = "";
|
431 |
|
|
for (size_t i = 0; i != matcher_describers_.size(); ++i) {
|
432 |
|
|
*os << sep << " - element #" << i << " ";
|
433 |
|
|
matcher_describers_[i]->DescribeTo(os);
|
434 |
|
|
sep = ", and\n";
|
435 |
|
|
}
|
436 |
|
|
}
|
437 |
|
|
|
438 |
|
|
// Checks that all matchers match at least one element, and that all
|
439 |
|
|
// elements match at least one matcher. This enables faster matching
|
440 |
|
|
// and better error reporting.
|
441 |
|
|
// Returns false, writing an explanation to 'listener', if and only
|
442 |
|
|
// if the success criteria are not met.
|
443 |
|
|
bool UnorderedElementsAreMatcherImplBase::
|
444 |
|
|
VerifyAllElementsAndMatchersAreMatched(
|
445 |
|
|
const ::std::vector<string>& element_printouts,
|
446 |
|
|
const MatchMatrix& matrix,
|
447 |
|
|
MatchResultListener* listener) const {
|
448 |
|
|
bool result = true;
|
449 |
|
|
::std::vector<char> element_matched(matrix.LhsSize(), 0);
|
450 |
|
|
::std::vector<char> matcher_matched(matrix.RhsSize(), 0);
|
451 |
|
|
|
452 |
|
|
for (size_t ilhs = 0; ilhs < matrix.LhsSize(); ilhs++) {
|
453 |
|
|
for (size_t irhs = 0; irhs < matrix.RhsSize(); irhs++) {
|
454 |
|
|
char matched = matrix.HasEdge(ilhs, irhs);
|
455 |
|
|
element_matched[ilhs] |= matched;
|
456 |
|
|
matcher_matched[irhs] |= matched;
|
457 |
|
|
}
|
458 |
|
|
}
|
459 |
|
|
|
460 |
|
|
{
|
461 |
|
|
const char* sep =
|
462 |
|
|
"where the following matchers don't match any elements:\n";
|
463 |
|
|
for (size_t mi = 0; mi < matcher_matched.size(); ++mi) {
|
464 |
|
|
if (matcher_matched[mi])
|
465 |
|
|
continue;
|
466 |
|
|
result = false;
|
467 |
|
|
if (listener->IsInterested()) {
|
468 |
|
|
*listener << sep << "matcher #" << mi << ": ";
|
469 |
|
|
matcher_describers_[mi]->DescribeTo(listener->stream());
|
470 |
|
|
sep = ",\n";
|
471 |
|
|
}
|
472 |
|
|
}
|
473 |
|
|
}
|
474 |
|
|
|
475 |
|
|
{
|
476 |
|
|
const char* sep =
|
477 |
|
|
"where the following elements don't match any matchers:\n";
|
478 |
|
|
const char* outer_sep = "";
|
479 |
|
|
if (!result) {
|
480 |
|
|
outer_sep = "\nand ";
|
481 |
|
|
}
|
482 |
|
|
for (size_t ei = 0; ei < element_matched.size(); ++ei) {
|
483 |
|
|
if (element_matched[ei])
|
484 |
|
|
continue;
|
485 |
|
|
result = false;
|
486 |
|
|
if (listener->IsInterested()) {
|
487 |
|
|
*listener << outer_sep << sep << "element #" << ei << ": "
|
488 |
|
|
<< element_printouts[ei];
|
489 |
|
|
sep = ",\n";
|
490 |
|
|
outer_sep = "";
|
491 |
|
|
}
|
492 |
|
|
}
|
493 |
|
|
}
|
494 |
|
|
return result;
|
495 |
|
|
}
|
496 |
|
|
|
497 |
|
|
} // namespace internal
|
498 |
|
|
} // namespace testing
|