1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
// -----------------------------------------------------------------------------------------------------
// Copyright (c) 2006-2020, Knut Reinert & Freie Universität Berlin
// Copyright (c) 2016-2020, Knut Reinert & MPI für molekulare Genetik
// This file may be used, modified and/or redistributed under the terms of the 3-clause BSD-License
// shipped with this file and also available at: https://github.com/seqan/seqan3/blob/master/LICENSE.md
// -----------------------------------------------------------------------------------------------------
#include <iostream>
#include <gtest/gtest.h>
#include <range/v3/view/unique.hpp>
#include <seqan3/range/views/single_pass_input.hpp>
#include <seqan3/range/views/take_until.hpp>
#include <seqan3/range/views/to.hpp>
#include <seqan3/std/algorithm>
#include <seqan3/std/ranges>
#include <seqan3/std/span>
#include <seqan3/test/expect_range_eq.hpp>
// ============================================================================
// test templates
// ============================================================================
template <typename adaptor_t, typename fun_t>
void do_test(adaptor_t const & adaptor, fun_t && fun, std::string const & vec)
{
// pipe notation
auto v = vec | adaptor(fun);
EXPECT_EQ("foo", v | seqan3::views::to<std::string>);
// function notation
std::string v2 = adaptor(vec, fun) | seqan3::views::to<std::string>;
EXPECT_EQ("foo", v2);
// combinability
auto v3 = vec | adaptor(fun) | ranges::views::unique;
EXPECT_EQ("fo", v3 | seqan3::views::to<std::string>);
std::string v3b = vec | std::views::reverse | adaptor(fun) | ranges::views::unique | seqan3::views::to<std::string>;
EXPECT_EQ("rab", v3b);
// Test combinability of take_until with std::reverse as second view, this caused a problem here:
// https://github.com/seqan/seqan3/issues/1754
std::string v3c = vec | adaptor(fun) | std::views::reverse | seqan3::views::to<std::string>;
EXPECT_EQ("oof", v3c);
// pointer as iterator
std::span s{std::ranges::data(vec), vec.size()};
auto v4 = s | adaptor(fun);
EXPECT_EQ("foo", v4 | seqan3::views::to<std::string>);
// comparability against self
EXPECT_RANGE_EQ(v, v);
}
template <typename adaptor_t>
void do_concepts(adaptor_t && adaptor, bool const_it)
{
std::string vec{"foo\nbar"};
EXPECT_TRUE(std::ranges::input_range<decltype(vec)>);
EXPECT_TRUE(std::ranges::forward_range<decltype(vec)>);
EXPECT_TRUE(std::ranges::bidirectional_range<decltype(vec)>);
EXPECT_TRUE(std::ranges::random_access_range<decltype(vec)>);
EXPECT_FALSE(std::ranges::view<decltype(vec)>);
EXPECT_TRUE(std::ranges::sized_range<decltype(vec)>);
EXPECT_TRUE(std::ranges::common_range<decltype(vec)>);
EXPECT_TRUE(seqan3::const_iterable_range<decltype(vec)>);
EXPECT_TRUE((std::ranges::output_range<decltype(vec), char>));
auto v1 = vec | adaptor;
EXPECT_TRUE(std::ranges::input_range<decltype(v1)>);
EXPECT_TRUE(std::ranges::forward_range<decltype(v1)>);
EXPECT_TRUE(std::ranges::bidirectional_range<decltype(v1)>);
EXPECT_TRUE(std::ranges::random_access_range<decltype(v1)>);
EXPECT_TRUE(std::ranges::view<decltype(v1)>);
EXPECT_FALSE(std::ranges::sized_range<decltype(v1)>);
EXPECT_FALSE(std::ranges::common_range<decltype(v1)>);
EXPECT_EQ(seqan3::const_iterable_range<decltype(v1)>, const_it);
EXPECT_TRUE((std::ranges::output_range<decltype(v1), char>));
auto v2 = vec | seqan3::views::single_pass_input | adaptor;
EXPECT_TRUE(std::ranges::input_range<decltype(v2)>);
EXPECT_FALSE(std::ranges::forward_range<decltype(v2)>);
EXPECT_FALSE(std::ranges::bidirectional_range<decltype(v2)>);
EXPECT_FALSE(std::ranges::random_access_range<decltype(v2)>);
EXPECT_TRUE(std::ranges::view<decltype(v2)>);
EXPECT_FALSE(std::ranges::sized_range<decltype(v2)>);
EXPECT_FALSE(std::ranges::common_range<decltype(v2)>);
EXPECT_FALSE(seqan3::const_iterable_range<decltype(v2)>);
EXPECT_TRUE((std::ranges::output_range<decltype(v2), char>));
// explicit test for non const-iterable views
// https://github.com/seqan/seqan3/pull/1734#discussion_r408829267
auto const & v2_cref = v2;
EXPECT_FALSE(std::ranges::input_range<decltype(v2_cref)>);
EXPECT_FALSE(std::ranges::forward_range<decltype(v2_cref)>);
EXPECT_FALSE(std::ranges::bidirectional_range<decltype(v2_cref)>);
EXPECT_FALSE(std::ranges::random_access_range<decltype(v2_cref)>);
EXPECT_FALSE(std::ranges::view<decltype(v2_cref)>);
EXPECT_FALSE(std::ranges::sized_range<decltype(v2_cref)>);
EXPECT_FALSE(std::ranges::common_range<decltype(v2_cref)>);
EXPECT_FALSE(seqan3::const_iterable_range<decltype(v2_cref)>);
EXPECT_FALSE((std::ranges::output_range<decltype(v2_cref), int>));
}
// ============================================================================
// view_take_until
// ============================================================================
TEST(view_take_until, unix_eol)
{
do_test(seqan3::views::take_until, [] (char c) { return c == '\n'; }, "foo\nbar");
}
TEST(view_take_until, functor_fail)
{
std::string vec{"foo"};
std::string v;
EXPECT_NO_THROW(( v = vec
| seqan3::views::take_until([] (char c) { return c == '\n'; })
| seqan3::views::to<std::string> ));
EXPECT_EQ("foo", v);
}
TEST(view_take_until, concepts)
{
auto adapt = seqan3::views::take_until([] (char c) { return c == '\n'; });
do_concepts(adapt, true);
// mutable adapters make the view loose const-iterability, but this is not checked by conepts unfortunately
// auto adapt2 = seqan3::views::take_until([count = 0] (char c) mutable { ++count; return c == '\n'; });
// do_concepts(adapt2, false);
}
// ============================================================================
// view_take_until_or_throw
// ============================================================================
TEST(view_take_until_or_throw, unix_eol)
{
do_test(seqan3::views::take_until_or_throw, [] (char c) { return c == '\n'; }, "foo\nbar");
}
TEST(view_take_until_or_throw, functor_fail)
{
std::string vec{"foo"};
EXPECT_THROW(std::string v = vec
| seqan3::views::take_until_or_throw([] (char c) { return c == '\n'; })
| seqan3::views::to<std::string>,
seqan3::unexpected_end_of_input);
}
TEST(view_take_until_or_throw, concepts)
{
do_concepts(seqan3::views::take_until_or_throw([] (char c) { return c == '\n'; }), true);
}
|
