1  
 2  //              Copyright Catch2 Authors
 3  // Distributed under the Boost Software License, Version 1.0.
 4  //   (See accompanying file LICENSE.txt or copy at
 5  //        https://www.boost.org/LICENSE_1_0.txt)
 6  
 7  // SPDX-License-Identifier: BSL-1.0
 8  
 9  // 020-TestCase-2.cpp
10  
11  // main() provided by Catch in file 020-TestCase-1.cpp.
12  
13  #include <catch2/catch_test_macros.hpp>
14  
15  static int Factorial( int number ) {
16     return number <= 1 ? number : Factorial( number - 1 ) * number;  // fail
17  // return number <= 1 ? 1      : Factorial( number - 1 ) * number;  // pass
18  }
19  
20  TEST_CASE( "2: Factorial of 0 is 1 (fail)", "[multi-file:2]" ) {
21      REQUIRE( Factorial(0) == 1 );
22  }
23  
24  TEST_CASE( "2: Factorials of 1 and higher are computed (pass)", "[multi-file:2]" ) {
25      REQUIRE( Factorial(1) == 1 );
26      REQUIRE( Factorial(2) == 2 );
27      REQUIRE( Factorial(3) == 6 );
28      REQUIRE( Factorial(10) == 3628800 );
29  }
30  
31  // Compile: see 020-TestCase-1.cpp
32  
33  // Expected compact output (all assertions):
34  //
35  // prompt> 020-TestCase --reporter compact --success
36  // 020-TestCase-2.cpp:13: failed: Factorial(0) == 1 for: 0 == 1
37  // 020-TestCase-2.cpp:17: passed: Factorial(1) == 1 for: 1 == 1
38  // 020-TestCase-2.cpp:18: passed: Factorial(2) == 2 for: 2 == 2
39  // 020-TestCase-2.cpp:19: passed: Factorial(3) == 6 for: 6 == 6
40  // 020-TestCase-2.cpp:20: passed: Factorial(10) == 3628800 for: 3628800 (0x375f00) == 3628800 (0x375f00)
41  // Failed 1 test case, failed 1 assertion.