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29 //
30 // Author: wan@google.com (Zhanyong Wan)
31
32 // Tests Google Test's throw-on-failure mode with exceptions enabled.
33
34 #include <gtest/gtest.h>
35
36 #include <stdlib.h>
37 #include <stdio.h>
38 #include <string.h>
39 #include <stdexcept>
40
41 // Prints the given failure message and exits the program with
42 // non-zero. We use this instead of a Google Test assertion to
43 // indicate a failure, as the latter is been tested and cannot be
44 // relied on.
Fail(const char * msg)45 void Fail(const char* msg) {
46 printf("FAILURE: %s\n", msg);
47 fflush(stdout);
48 exit(1);
49 }
50
51 // Tests that an assertion failure throws a subclass of
52 // std::runtime_error.
TestFailureThrowsRuntimeError()53 void TestFailureThrowsRuntimeError() {
54 testing::GTEST_FLAG(throw_on_failure) = true;
55
56 // A successful assertion shouldn't throw.
57 try {
58 EXPECT_EQ(3, 3);
59 } catch(...) {
60 Fail("A successful assertion wrongfully threw.");
61 }
62
63 // A failed assertion should throw a subclass of std::runtime_error.
64 try {
65 EXPECT_EQ(2, 3) << "Expected failure";
66 } catch(const std::runtime_error& e) {
67 if (strstr(e.what(), "Expected failure") != NULL)
68 return;
69
70 printf("%s",
71 "A failed assertion did throw an exception of the right type, "
72 "but the message is incorrect. Instead of containing \"Expected "
73 "failure\", it is:\n");
74 Fail(e.what());
75 } catch(...) {
76 Fail("A failed assertion threw the wrong type of exception.");
77 }
78 Fail("A failed assertion should've thrown but didn't.");
79 }
80
main(int argc,char ** argv)81 int main(int argc, char** argv) {
82 testing::InitGoogleTest(&argc, argv);
83
84 // We want to ensure that people can use Google Test assertions in
85 // other testing frameworks, as long as they initialize Google Test
86 // properly and set the thrown-on-failure mode. Therefore, we don't
87 // use Google Test's constructs for defining and running tests
88 // (e.g. TEST and RUN_ALL_TESTS) here.
89
90 TestFailureThrowsRuntimeError();
91 return 0;
92 }
93