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Stream.ut.cpp
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1// The Reactive C++ Toolbox.
2// Copyright (C) 2013-2019 Swirly Cloud Limited
3// Copyright (C) 2022 Reactive Markets Limited
4//
5// Licensed under the Apache License, Version 2.0 (the "License");
6// you may not use this file except in compliance with the License.
7// You may obtain a copy of the License at
8//
9// http://www.apache.org/licenses/LICENSE-2.0
10//
11// Unless required by applicable law or agreed to in writing, software
12// distributed under the License is distributed on an "AS IS" BASIS,
13// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14// See the License for the specific language governing permissions and
15// limitations under the License.
16
17#include "Stream.hpp"
18
19#include <boost/test/unit_test.hpp>
20
21#include <array>
22#include <sstream>
23#include <limits>
24
25using namespace std;
26using namespace toolbox;
27
28BOOST_AUTO_TEST_SUITE(StreamSuite)
29
30BOOST_AUTO_TEST_CASE(OStaticStreamCase)
31{
32 OStaticStream<7> os;
33 BOOST_CHECK(os.empty());
34 os << "foo";
35 BOOST_CHECK_EQUAL(os.size(), 3U);
36 BOOST_CHECK_EQUAL(os.str(), "foo");
37 os << ',' << "bar";
38 BOOST_CHECK_EQUAL(os.size(), 7U);
39 BOOST_CHECK_EQUAL(os.str(), "foo,bar");
40
41 os.reset();
42 BOOST_CHECK(os.empty());
43 os << 1234567;
44 BOOST_CHECK_EQUAL(os.size(), 7U);
45 BOOST_CHECK_EQUAL(os.str(), "1234567");
46 BOOST_CHECK(os);
47
48 // overflow
49 os.reset();
50 BOOST_CHECK(os.empty());
51 os << 12345678;
52 BOOST_CHECK_EQUAL(os.size(), 0U);
53 BOOST_CHECK_EQUAL(os.str(), "");
54 BOOST_CHECK(!os);
55
56 os.reset();
57 BOOST_CHECK(!!os);
58 BOOST_CHECK(os.empty());
59 os << float{1.2345};
60 BOOST_CHECK_EQUAL(os.size(), 6U);
61 BOOST_CHECK_EQUAL(os.str(), "1.2345");
62 BOOST_CHECK(os);
63
64 os.reset();
65 BOOST_CHECK(!!os);
66 BOOST_CHECK(os.empty());
67 os << double{1.23456};
68 BOOST_CHECK_EQUAL(os.size(), 7U);
69 BOOST_CHECK_EQUAL(os.str(), "1.23456");
70 BOOST_CHECK(os);
71
72 // inf
73 os.reset();
74 BOOST_CHECK(!!os);
75 BOOST_CHECK(os.empty());
76 os << std::numeric_limits<double>::infinity();
77 BOOST_CHECK_EQUAL(os.size(), 3U);
78 BOOST_CHECK_EQUAL(os.str(), "inf");
79 BOOST_CHECK(os);
80
81 // nan
82 os.reset();
83 BOOST_CHECK(!!os);
84 BOOST_CHECK(os.empty());
85 os << std::numeric_limits<double>::quiet_NaN();
86 BOOST_CHECK_EQUAL(os.size(), 3U);
87 BOOST_CHECK_EQUAL(os.str(), "nan");
88 BOOST_CHECK(os);
89
90 // overflow
91 os.reset();
92 BOOST_CHECK(!!os);
93 BOOST_CHECK(os.empty());
94 os << double{1.234567};
95 BOOST_CHECK_EQUAL(os.size(), 0U);
96 BOOST_CHECK_EQUAL(os.str(), "");
97 BOOST_CHECK(!os);
98
99 os << "test";
100 BOOST_CHECK_EQUAL(os.str(), "test");
101}
102
103BOOST_AUTO_TEST_CASE(OStreamCase)
104{
105 OStream<7> os{OStream<7>::make_storage()};
106 BOOST_CHECK(os.empty());
107 os << "foo";
108 BOOST_CHECK_EQUAL(os.size(), 3U);
109 BOOST_CHECK_EQUAL(os.str(), "foo");
110 os << ',' << "bar";
111 BOOST_CHECK_EQUAL(os.size(), 7U);
112 BOOST_CHECK_EQUAL(os.str(), "foo,bar");
113
114 os.reset();
115 BOOST_CHECK(os.empty());
116 os << 1234567;
117 BOOST_CHECK_EQUAL(os.size(), 7U);
118 BOOST_CHECK_EQUAL(os.str(), "1234567");
119 BOOST_CHECK(os);
120
121 // overflow
122 os.reset();
123 BOOST_CHECK(os.empty());
124 os << 12345678;
125 BOOST_CHECK_EQUAL(os.size(), 0U);
126 BOOST_CHECK_EQUAL(os.str(), "");
127 BOOST_CHECK(!os);
128
129 os.reset();
130 BOOST_CHECK(!!os);
131 BOOST_CHECK(os.empty());
132 os << float{1.2345};
133 BOOST_CHECK_EQUAL(os.size(), 6U);
134 BOOST_CHECK_EQUAL(os.str(), "1.2345");
135 BOOST_CHECK(os);
136
137 os.reset();
138 BOOST_CHECK(!!os);
139 BOOST_CHECK(os.empty());
140 os << double{1.23456};
141 BOOST_CHECK_EQUAL(os.size(), 7U);
142 BOOST_CHECK_EQUAL(os.str(), "1.23456");
143 BOOST_CHECK(os);
144
145 // inf
146 os.reset();
147 BOOST_CHECK(!!os);
148 BOOST_CHECK(os.empty());
149 os << std::numeric_limits<double>::infinity();
150 BOOST_CHECK_EQUAL(os.size(), 3U);
151 BOOST_CHECK_EQUAL(os.str(), "inf");
152 BOOST_CHECK(os);
153
154 // nan
155 os.reset();
156 BOOST_CHECK(!!os);
157 BOOST_CHECK(os.empty());
158 os << std::numeric_limits<double>::quiet_NaN();
159 BOOST_CHECK_EQUAL(os.size(), 3U);
160 BOOST_CHECK_EQUAL(os.str(), "nan");
161 BOOST_CHECK(os);
162
163 // overflow
164 os.reset();
165 BOOST_CHECK(!!os);
166 BOOST_CHECK(os.empty());
167 os << double{1.234567};
168 BOOST_CHECK_EQUAL(os.size(), 0U);
169 BOOST_CHECK_EQUAL(os.str(), "");
170 BOOST_CHECK(!os);
171
172 os << "test";
173 BOOST_CHECK_EQUAL(os.str(), "test");
174}
175
176BOOST_AUTO_TEST_CASE(OStreamIteratorDelimCase)
177{
178 array<string, 3> arr{{"foo", "bar", "baz"}};
179 stringstream os;
180 copy(arr.begin(), arr.end(), OStreamIterator{os, ","});
181 BOOST_CHECK_EQUAL(os.str(), "foo,bar,baz,");
182 // Note, the comma at the end! This is correct as per
183 // the spec of std::ostream_iterator. OStreamJoiner
184 // behaves differently.
185}
186
187BOOST_AUTO_TEST_CASE(OStreamJoinerCase)
188{
189 array<string, 3> arr{{"foo", "bar", "baz"}};
190 stringstream os;
191 copy(arr.begin(), arr.end(), OStreamJoiner{os, ','});
192 BOOST_CHECK_EQUAL(os.str(), "foo,bar,baz");
193}
194
195BOOST_AUTO_TEST_SUITE_END()
BOOST_CHECK_EQUAL
BOOST_CHECK_EQUAL(v.size(), 10U)
BOOST_AUTO_TEST_CASE
BOOST_AUTO_TEST_CASE(OStaticStreamCase)
Definition Stream.ut.cpp:30
toolbox::util::OStaticStream::empty
bool empty() const noexcept
Definition Stream.hpp:161
toolbox::util::OStaticStream::size
std::size_t size() const noexcept
Definition Stream.hpp:162
toolbox::util::OStaticStream::reset
void reset() noexcept
Reset the current position back to the beginning of the buffer.
Definition Stream.hpp:172
toolbox::util::OStaticStream::str
std::string_view str() const noexcept
Definition Stream.hpp:163
std
STL namespace.
toolbox::util::bind
constexpr auto bind() noexcept
Definition Slot.hpp:97
BOOST_CHECK
BOOST_CHECK(isnan(stod(""sv, numeric_limits< double >::quiet_NaN())))
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