Calculator Step 6

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test_number.cpp
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1 #include <iostream>
2 #include <istream>
3 #include <ostream>
4 #include <sstream>
5 #include <string>
6
7 #include <boost/test/auto_unit_test.hpp>
8
9 #include "calc_error.hpp"
10 #include "number.hpp"
11
12 BOOST_AUTO_TEST_SUITE(number_test);
13
14 BOOST_AUTO_TEST_CASE(test_basics)
15 {
16 number n(1L);
17 BOOST_CHECK_EQUAL("1", n.to_string());
18 number m(2.0);
19 BOOST_CHECK_EQUAL("2", m.to_string());
20 m = n;
21 BOOST_CHECK_EQUAL("1", m.to_string());
22 number x((number(n)));
23 BOOST_CHECK_EQUAL("1", x.to_string());
24 }
25
26 BOOST_AUTO_TEST_CASE(test_library)
27 {
28 number i(1), f(2.0), v;
29 std::stringstream stream;
30 i.save(stream);
31 f.save(stream);
32 v.save(stream);
33
34 number n1(stream);
35 number n2(stream);
36 number n3(stream);
37
38 BOOST_CHECK_EQUAL(number(1), n1);
39 BOOST_CHECK_EQUAL(number(2), n2);
40 BOOST_CHECK_EQUAL("", n3.to_string());
41 }
42
43 BOOST_AUTO_TEST_CASE(test_compare)
44 {
45 BOOST_CHECK(number(1) < number(2));
46 BOOST_CHECK(number(1) <= number(2));
47 BOOST_CHECK(number(1) != number(2));
48 BOOST_CHECK(number(2) > number(1));
49 BOOST_CHECK(number(2) >= number(1));
50 BOOST_CHECK(number(2) != number(1));
51 BOOST_CHECK(number(1) == number(1));
52 BOOST_CHECK(not (number(1) != number(1)));
53 BOOST_CHECK(not (number(1) > number(2)));
54 BOOST_CHECK(not (number(1) >= number(2)));
55 BOOST_CHECK(not (number(1) == number(2)));
56 BOOST_CHECK(not (number(2) < number(1)));
57 BOOST_CHECK(not (number(2) <= number(1)));
58 BOOST_CHECK(not (number(2) == number(1)));
59
60 BOOST_CHECK(number(1) < number(1.5));
61 BOOST_CHECK(number(1) <= number(1.5));
62 BOOST_CHECK(number(1) != number(1.5));
63 BOOST_CHECK(number(1.5) > number(1));
64 BOOST_CHECK(number(1.5) >= number(1));
65 BOOST_CHECK(number(1.5) != number(1));
66 BOOST_CHECK(number(1.0) == number(1));
67 }
68
69 BOOST_AUTO_TEST_CASE(test_add)
70 {
71 number a(1.0), b(2), c;
72 c = a + b;
73 BOOST_CHECK_EQUAL(number(3), c);
74 }
75
76 BOOST_AUTO_TEST_CASE(test_subtract)
77 {
78 number a(2.0), b(1), c;
79 c = a - b;
80 BOOST_CHECK_EQUAL(number(1), c);
81 }
82
83 BOOST_AUTO_TEST_CASE(test_multiply)
84 {
85 number a(2.0), b(3), c;
86 c = a * b;
87 BOOST_CHECK_EQUAL(number(6), c);
88 }
89
90 BOOST_AUTO_TEST_CASE(test_divide)
91 {
92 number a(5), b(2), c;
93 c = a / b;
94 BOOST_CHECK_EQUAL(number(rational<long>(5, 2)), c);
95 a = number(5.0);
96 c = a / b;
97 BOOST_CHECK_EQUAL(number(2.5), c);
98 BOOST_CHECK_THROW(a / number(0), calc_error);
99 }
100
101 BOOST_AUTO_TEST_CASE(test_rational)
102 {
103 number half(rational<long>(1, 2));
104 number a(half);
105 a = a * number(2);
106 BOOST_CHECK_EQUAL(number(1), a);
107 a = a / number(3);
108 a = a * number(3);
109 BOOST_CHECK_EQUAL(number(1), a);
110 a = a - half;
111 BOOST_CHECK_EQUAL(half, a);
112 a = half + a;
113 BOOST_CHECK_EQUAL(number(1), a);
114 }
115
116 BOOST_AUTO_TEST_SUITE_END();
number::to_string
std::string to_string() const
Definition: number.cpp:45
BOOST_AUTO_TEST_CASE
BOOST_AUTO_TEST_CASE(test_basics)
Definition: test_node.cpp:14
calc_error
Definition: calc_error.hpp:11
number
Definition: number.hpp:16
calc_error.hpp
BOOST_AUTO_TEST_SUITE_END
BOOST_AUTO_TEST_SUITE_END()
rational
Represent a rational number (fraction) as a numerator and denominator.
Definition: rational.hpp:26
number::save
void save(std::ostream &stream) const
Definition: number.cpp:39
number.hpp
BOOST_AUTO_TEST_SUITE
BOOST_AUTO_TEST_SUITE(node_test)