ceph/src/googletest/googlemock/test/gmock_output_test_.cc

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  30 // Author: wan@google.com (Zhanyong Wan)
  31
  32 // Tests Google Mock's output in various scenarios.  This ensures that
  33 // Google Mock's messages are readable and useful.
  34
  35 #include "gmock/gmock.h"
  36
  37 #include <stdio.h>
  38 #include <string>
  39
  40 #include "gtest/gtest.h"
  41
  42 using testing::_;
  43 using testing::AnyNumber;
  44 using testing::Ge;
  45 using testing::InSequence;
  46 using testing::NaggyMock;
  47 using testing::Ref;
  48 using testing::Return;
  49 using testing::Sequence;
  50
  51 class MockFoo {
  52  public:
  53   MockFoo() {}
  54
  55   MOCK_METHOD3(Bar, char(const std::string& s, int i, double x));
  56   MOCK_METHOD2(Bar2, bool(int x, int y));
  57   MOCK_METHOD2(Bar3, void(int x, int y));
  58
  59  private:
  60   GTEST_DISALLOW_COPY_AND_ASSIGN_(MockFoo);
  61 };
  62
  63 class GMockOutputTest : public testing::Test {
  64  protected:
  65   NaggyMock<MockFoo> foo_;
  66 };
  67
  68 TEST_F(GMockOutputTest, ExpectedCall) {
  69   testing::GMOCK_FLAG(verbose) = "info";
  70
  71   EXPECT_CALL(foo_, Bar2(0, _));
  72   foo_.Bar2(0, 0);  // Expected call
  73
  74   testing::GMOCK_FLAG(verbose) = "warning";
  75 }
  76
  77 TEST_F(GMockOutputTest, ExpectedCallToVoidFunction) {
  78   testing::GMOCK_FLAG(verbose) = "info";
  79
  80   EXPECT_CALL(foo_, Bar3(0, _));
  81   foo_.Bar3(0, 0);  // Expected call
  82
  83   testing::GMOCK_FLAG(verbose) = "warning";
  84 }
  85
  86 TEST_F(GMockOutputTest, ExplicitActionsRunOut) {
  87   EXPECT_CALL(foo_, Bar2(_, _))
  88       .Times(2)
  89       .WillOnce(Return(false));
  90   foo_.Bar2(2, 2);
  91   foo_.Bar2(1, 1);  // Explicit actions in EXPECT_CALL run out.
  92 }
  93
  94 TEST_F(GMockOutputTest, UnexpectedCall) {
  95   EXPECT_CALL(foo_, Bar2(0, _));
  96
  97   foo_.Bar2(1, 0);  // Unexpected call
  98   foo_.Bar2(0, 0);  // Expected call
  99 }
 100
 101 TEST_F(GMockOutputTest, UnexpectedCallToVoidFunction) {
 102   EXPECT_CALL(foo_, Bar3(0, _));
 103
 104   foo_.Bar3(1, 0);  // Unexpected call
 105   foo_.Bar3(0, 0);  // Expected call
 106 }
 107
 108 TEST_F(GMockOutputTest, ExcessiveCall) {
 109   EXPECT_CALL(foo_, Bar2(0, _));
 110
 111   foo_.Bar2(0, 0);  // Expected call
 112   foo_.Bar2(0, 1);  // Excessive call
 113 }
 114
 115 TEST_F(GMockOutputTest, ExcessiveCallToVoidFunction) {
 116   EXPECT_CALL(foo_, Bar3(0, _));
 117
 118   foo_.Bar3(0, 0);  // Expected call
 119   foo_.Bar3(0, 1);  // Excessive call
 120 }
 121
 122 TEST_F(GMockOutputTest, UninterestingCall) {
 123   foo_.Bar2(0, 1);  // Uninteresting call
 124 }
 125
 126 TEST_F(GMockOutputTest, UninterestingCallToVoidFunction) {
 127   foo_.Bar3(0, 1);  // Uninteresting call
 128 }
 129
 130 TEST_F(GMockOutputTest, RetiredExpectation) {
 131   EXPECT_CALL(foo_, Bar2(_, _))
 132       .RetiresOnSaturation();
 133   EXPECT_CALL(foo_, Bar2(0, 0));
 134
 135   foo_.Bar2(1, 1);
 136   foo_.Bar2(1, 1);  // Matches a retired expectation
 137   foo_.Bar2(0, 0);
 138 }
 139
 140 TEST_F(GMockOutputTest, UnsatisfiedPrerequisite) {
 141   {
 142     InSequence s;
 143     EXPECT_CALL(foo_, Bar(_, 0, _));
 144     EXPECT_CALL(foo_, Bar2(0, 0));
 145     EXPECT_CALL(foo_, Bar2(1, _));
 146   }
 147
 148   foo_.Bar2(1, 0);  // Has one immediate unsatisfied pre-requisite
 149   foo_.Bar("Hi", 0, 0);
 150   foo_.Bar2(0, 0);
 151   foo_.Bar2(1, 0);
 152 }
 153
 154 TEST_F(GMockOutputTest, UnsatisfiedPrerequisites) {
 155   Sequence s1, s2;
 156
 157   EXPECT_CALL(foo_, Bar(_, 0, _))
 158       .InSequence(s1);
 159   EXPECT_CALL(foo_, Bar2(0, 0))
 160       .InSequence(s2);
 161   EXPECT_CALL(foo_, Bar2(1, _))
 162       .InSequence(s1, s2);
 163
 164   foo_.Bar2(1, 0);  // Has two immediate unsatisfied pre-requisites
 165   foo_.Bar("Hi", 0, 0);
 166   foo_.Bar2(0, 0);
 167   foo_.Bar2(1, 0);
 168 }
 169
 170 TEST_F(GMockOutputTest, UnsatisfiedWith) {
 171   EXPECT_CALL(foo_, Bar2(_, _)).With(Ge());
 172 }
 173
 174 TEST_F(GMockOutputTest, UnsatisfiedExpectation) {
 175   EXPECT_CALL(foo_, Bar(_, _, _));
 176   EXPECT_CALL(foo_, Bar2(0, _))
 177       .Times(2);
 178
 179   foo_.Bar2(0, 1);
 180 }
 181
 182 TEST_F(GMockOutputTest, MismatchArguments) {
 183   const std::string s = "Hi";
 184   EXPECT_CALL(foo_, Bar(Ref(s), _, Ge(0)));
 185
 186   foo_.Bar("Ho", 0, -0.1);  // Mismatch arguments
 187   foo_.Bar(s, 0, 0);
 188 }
 189
 190 TEST_F(GMockOutputTest, MismatchWith) {
 191   EXPECT_CALL(foo_, Bar2(Ge(2), Ge(1)))
 192       .With(Ge());
 193
 194   foo_.Bar2(2, 3);  // Mismatch With()
 195   foo_.Bar2(2, 1);
 196 }
 197
 198 TEST_F(GMockOutputTest, MismatchArgumentsAndWith) {
 199   EXPECT_CALL(foo_, Bar2(Ge(2), Ge(1)))
 200       .With(Ge());
 201
 202   foo_.Bar2(1, 3);  // Mismatch arguments and mismatch With()
 203   foo_.Bar2(2, 1);
 204 }
 205
 206 TEST_F(GMockOutputTest, UnexpectedCallWithDefaultAction) {
 207   ON_CALL(foo_, Bar2(_, _))
 208       .WillByDefault(Return(true));   // Default action #1
 209   ON_CALL(foo_, Bar2(1, _))
 210       .WillByDefault(Return(false));  // Default action #2
 211
 212   EXPECT_CALL(foo_, Bar2(2, 2));
 213   foo_.Bar2(1, 0);  // Unexpected call, takes default action #2.
 214   foo_.Bar2(0, 0);  // Unexpected call, takes default action #1.
 215   foo_.Bar2(2, 2);  // Expected call.
 216 }
 217
 218 TEST_F(GMockOutputTest, ExcessiveCallWithDefaultAction) {
 219   ON_CALL(foo_, Bar2(_, _))
 220       .WillByDefault(Return(true));   // Default action #1
 221   ON_CALL(foo_, Bar2(1, _))
 222       .WillByDefault(Return(false));  // Default action #2
 223
 224   EXPECT_CALL(foo_, Bar2(2, 2));
 225   EXPECT_CALL(foo_, Bar2(1, 1));
 226
 227   foo_.Bar2(2, 2);  // Expected call.
 228   foo_.Bar2(2, 2);  // Excessive call, takes default action #1.
 229   foo_.Bar2(1, 1);  // Expected call.
 230   foo_.Bar2(1, 1);  // Excessive call, takes default action #2.
 231 }
 232
 233 TEST_F(GMockOutputTest, UninterestingCallWithDefaultAction) {
 234   ON_CALL(foo_, Bar2(_, _))
 235       .WillByDefault(Return(true));   // Default action #1
 236   ON_CALL(foo_, Bar2(1, _))
 237       .WillByDefault(Return(false));  // Default action #2
 238
 239   foo_.Bar2(2, 2);  // Uninteresting call, takes default action #1.
 240   foo_.Bar2(1, 1);  // Uninteresting call, takes default action #2.
 241 }
 242
 243 TEST_F(GMockOutputTest, ExplicitActionsRunOutWithDefaultAction) {
 244   ON_CALL(foo_, Bar2(_, _))
 245       .WillByDefault(Return(true));   // Default action #1
 246
 247   EXPECT_CALL(foo_, Bar2(_, _))
 248       .Times(2)
 249       .WillOnce(Return(false));
 250   foo_.Bar2(2, 2);
 251   foo_.Bar2(1, 1);  // Explicit actions in EXPECT_CALL run out.
 252 }
 253
 254 TEST_F(GMockOutputTest, CatchesLeakedMocks) {
 255   MockFoo* foo1 = new MockFoo;
 256   MockFoo* foo2 = new MockFoo;
 257
 258   // Invokes ON_CALL on foo1.
 259   ON_CALL(*foo1, Bar(_, _, _)).WillByDefault(Return('a'));
 260
 261   // Invokes EXPECT_CALL on foo2.
 262   EXPECT_CALL(*foo2, Bar2(_, _));
 263   EXPECT_CALL(*foo2, Bar2(1, _));
 264   EXPECT_CALL(*foo2, Bar3(_, _)).Times(AnyNumber());
 265   foo2->Bar2(2, 1);
 266   foo2->Bar2(1, 1);
 267
 268   // Both foo1 and foo2 are deliberately leaked.
 269 }
 270
 271 void TestCatchesLeakedMocksInAdHocTests() {
 272   MockFoo* foo = new MockFoo;
 273
 274   // Invokes EXPECT_CALL on foo.
 275   EXPECT_CALL(*foo, Bar2(_, _));
 276   foo->Bar2(2, 1);
 277
 278   // foo is deliberately leaked.
 279 }
 280
 281 int main(int argc, char **argv) {
 282   testing::InitGoogleMock(&argc, argv);
 283
 284   // Ensures that the tests pass no matter what value of
 285   // --gmock_catch_leaked_mocks and --gmock_verbose the user specifies.
 286   testing::GMOCK_FLAG(catch_leaked_mocks) = true;
 287   testing::GMOCK_FLAG(verbose) = "warning";
 288
 289   TestCatchesLeakedMocksInAdHocTests();
 290   return RUN_ALL_TESTS();
 291 }