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test_parse.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 "parse.hpp"
10
11 BOOST_AUTO_TEST_CASE(test_number)
12 {
13 std::istringstream in("1\n3.14159\n1.23e45\n45.67e+8\n");
14 std::ostringstream out;
15 parse_loop(in, out);
16 BOOST_CHECK_EQUAL("> 1\n> 3.14159\n> 1.23e+45\n> 4.567e+09\n> ", out.str());
17 }
18
19 BOOST_AUTO_TEST_CASE(test_negative)
20 {
21 std::istringstream in("-1\n-3.14159\n-1.23e-45\n-34.56e-7\n");
22 std::ostringstream out;
23 parse_loop(in, out);
24 BOOST_CHECK_EQUAL("> -1\n> -3.14159\n> -1.23e-45\n> -3.456e-06\n> ", out.str());
25 }
26
27 BOOST_AUTO_TEST_CASE(test_add)
28 {
29 std::istringstream in("1 + 2\n1 + 2 + 3");
30 std::ostringstream out;
31 parse_loop(in, out);
32 BOOST_CHECK_EQUAL("> 3\n> 6\n> ", out.str());
33 }
34
35 BOOST_AUTO_TEST_CASE(test_subtract)
36 {
37 std::istringstream in("1 - 2\n5 - 1 - 2");
38 std::ostringstream out;
39 parse_loop(in, out);
40 BOOST_CHECK_EQUAL("> -1\n> 2\n> ", out.str());
41 }
42
43 BOOST_AUTO_TEST_CASE(test_multiply)
44 {
45 std::istringstream in("1 * 2\n5 * 2 * 1.5");
46 std::ostringstream out;
47 parse_loop(in, out);
48 BOOST_CHECK_EQUAL("> 2\n> 15\n> ", out.str());
49 }
50
51 BOOST_AUTO_TEST_CASE(test_divide)
52 {
53 std::istringstream in("1 / 2\n10 / 2 / 2");
54 std::ostringstream out;
55 parse_loop(in, out);
56 BOOST_CHECK_EQUAL("> 0.5\n> 2.5\n> ", out.str());
57 }
58
59 BOOST_AUTO_TEST_CASE(test_mix)
60 {
61 std::istringstream in(" 1.5 * 2 + 3 / 1.5 - (10 - 3) + 2 * -1");
62 std::ostringstream out;
63 parse_loop(in, out);
64 BOOST_CHECK_EQUAL("> -4\n> ", out.str());
65 }
66
67 BOOST_AUTO_TEST_CASE(test_var)
68 {
69 std::istringstream in(" var half = 1 / 2\nvar one=1.0\n one + half");
70 std::ostringstream out;
71 parse_loop(in, out);
72 BOOST_CHECK_EQUAL("> 0.5\n> 1\n> 1.5\n> ", out.str());
73 }
74
75 BOOST_AUTO_TEST_CASE(test_predefined_vars)
76 {
77 std::istringstream in(" pi - e");
78 std::ostringstream out;
79 parse_loop(in, out);
80 BOOST_CHECK_EQUAL("> 0.423311\n> ", out.str());
81 }
82
83 BOOST_AUTO_TEST_CASE(test_error1)
84 {
85 std::istringstream in("1+++2");
86 std::ostringstream out;
87 parse_loop(in, out);
88 BOOST_CHECK_EQUAL("> syntax error: expected a primary, but got +\n> ", out.str());
89 }
90
91 BOOST_AUTO_TEST_CASE(test_error2)
92 {
93 std::istringstream in("1..2");
94 std::ostringstream out;
95 parse_loop(in, out);
96 BOOST_CHECK_EQUAL("> syntax error: expected digit after decimal point, got '.'\n> ", out.str());
97 }
98
99 BOOST_AUTO_TEST_CASE(test_error3)
100 {
101 std::istringstream in("1 @ 2");
102 std::ostringstream out;
103 parse_loop(in, out);
104 BOOST_CHECK_EQUAL("> syntax error: expected digit, got '@'\n> ", out.str());
105 }
106
107 BOOST_AUTO_TEST_CASE(test_error4)
108 {
109 std::istringstream in("(1 + 2");
110 std::ostringstream out;
111 parse_loop(in, out);
112 BOOST_CHECK_EQUAL("> syntax error: EOF when expecting ')'\n> ", out.str());
113 }
114
parse_loop
void parse_loop(std::istream &input, std::ostream &output)
Definition: parse.cpp:267
parse.hpp
BOOST_AUTO_TEST_CASE
BOOST_AUTO_TEST_CASE(test_number)
Definition: test_parse.cpp:11