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| 1 // 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 cardinalities. |
| 35 |
| 36 #include <gmock/gmock-cardinalities.h> |
| 37 |
| 38 #include <limits.h> |
| 39 #include <ostream> // NOLINT |
| 40 #include <sstream> |
| 41 #include <string> |
| 42 #include <gmock/internal/gmock-internal-utils.h> |
| 43 #include <gtest/gtest.h> |
| 44 |
| 45 namespace testing { |
| 46 |
| 47 namespace { |
| 48 |
| 49 // Implements the Between(m, n) cardinality. |
| 50 class BetweenCardinalityImpl : public CardinalityInterface { |
| 51 public: |
| 52 BetweenCardinalityImpl(int min, int max) |
| 53 : min_(min >= 0 ? min : 0), |
| 54 max_(max >= min_ ? max : min_) { |
| 55 std::stringstream ss; |
| 56 if (min < 0) { |
| 57 ss << "The invocation lower bound must be >= 0, " |
| 58 << "but is actually " << min << "."; |
| 59 internal::Expect(false, __FILE__, __LINE__, ss.str()); |
| 60 } else if (max < 0) { |
| 61 ss << "The invocation upper bound must be >= 0, " |
| 62 << "but is actually " << max << "."; |
| 63 internal::Expect(false, __FILE__, __LINE__, ss.str()); |
| 64 } else if (min > max) { |
| 65 ss << "The invocation upper bound (" << max |
| 66 << ") must be >= the invocation lower bound (" << min |
| 67 << ")."; |
| 68 internal::Expect(false, __FILE__, __LINE__, ss.str()); |
| 69 } |
| 70 } |
| 71 |
| 72 // Conservative estimate on the lower/upper bound of the number of |
| 73 // calls allowed. |
| 74 virtual int ConservativeLowerBound() const { return min_; } |
| 75 virtual int ConservativeUpperBound() const { return max_; } |
| 76 |
| 77 virtual bool IsSatisfiedByCallCount(int call_count) const { |
| 78 return min_ <= call_count && call_count <= max_ ; |
| 79 } |
| 80 |
| 81 virtual bool IsSaturatedByCallCount(int call_count) const { |
| 82 return call_count >= max_; |
| 83 } |
| 84 |
| 85 virtual void DescribeTo(::std::ostream* os) const; |
| 86 private: |
| 87 const int min_; |
| 88 const int max_; |
| 89 |
| 90 GTEST_DISALLOW_COPY_AND_ASSIGN_(BetweenCardinalityImpl); |
| 91 }; |
| 92 |
| 93 // Formats "n times" in a human-friendly way. |
| 94 inline internal::string FormatTimes(int n) { |
| 95 if (n == 1) { |
| 96 return "once"; |
| 97 } else if (n == 2) { |
| 98 return "twice"; |
| 99 } else { |
| 100 std::stringstream ss; |
| 101 ss << n << " times"; |
| 102 return ss.str(); |
| 103 } |
| 104 } |
| 105 |
| 106 // Describes the Between(m, n) cardinality in human-friendly text. |
| 107 void BetweenCardinalityImpl::DescribeTo(::std::ostream* os) const { |
| 108 if (min_ == 0) { |
| 109 if (max_ == 0) { |
| 110 *os << "never called"; |
| 111 } else if (max_ == INT_MAX) { |
| 112 *os << "called any number of times"; |
| 113 } else { |
| 114 *os << "called at most " << FormatTimes(max_); |
| 115 } |
| 116 } else if (min_ == max_) { |
| 117 *os << "called " << FormatTimes(min_); |
| 118 } else if (max_ == INT_MAX) { |
| 119 *os << "called at least " << FormatTimes(min_); |
| 120 } else { |
| 121 // 0 < min_ < max_ < INT_MAX |
| 122 *os << "called between " << min_ << " and " << max_ << " times"; |
| 123 } |
| 124 } |
| 125 |
| 126 } // Unnamed namespace |
| 127 |
| 128 // Describes the given call count to an ostream. |
| 129 void Cardinality::DescribeActualCallCountTo(int actual_call_count, |
| 130 ::std::ostream* os) { |
| 131 if (actual_call_count > 0) { |
| 132 *os << "called " << FormatTimes(actual_call_count); |
| 133 } else { |
| 134 *os << "never called"; |
| 135 } |
| 136 } |
| 137 |
| 138 // Creates a cardinality that allows at least n calls. |
| 139 Cardinality AtLeast(int n) { return Between(n, INT_MAX); } |
| 140 |
| 141 // Creates a cardinality that allows at most n calls. |
| 142 Cardinality AtMost(int n) { return Between(0, n); } |
| 143 |
| 144 // Creates a cardinality that allows any number of calls. |
| 145 Cardinality AnyNumber() { return AtLeast(0); } |
| 146 |
| 147 // Creates a cardinality that allows between min and max calls. |
| 148 Cardinality Between(int min, int max) { |
| 149 return Cardinality(new BetweenCardinalityImpl(min, max)); |
| 150 } |
| 151 |
| 152 // Creates a cardinality that allows exactly n calls. |
| 153 Cardinality Exactly(int n) { return Between(n, n); } |
| 154 |
| 155 } // namespace testing |
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