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//
Boost.Geometry (aka GGL, Generic Geometry Library)
//
Unit Test
//
Copyright (c) 2015, Oracle and/or its affiliates.
//
Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
//
Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
//
Licensed under the Boost Software License version 1.0.
//
http://www.boost.org/users/license.html
#
ifndef
BOOST_TEST_MODULE
#
define
BOOST_TEST_MODULE
test_maximum_gap
#
endif
#
include
<
boost/test/included/unit_test.hpp
>
#
include
<
cstddef
>
#
include
<
iostream
>
#
include
<
sstream
>
#
include
<
vector
>
#
include
<
boost/geometry/algorithms/detail/max_interval_gap.hpp
>
namespace
bg
=
boost::geometry;
class
uint_interval
{
public:
typedef
unsigned
value_type;
typedef
int
difference_type;
uint_interval
(
unsigned
left,
unsigned
right)
: m_left(left)
, m_right(right)
{}
template
<std::
size_t
Index>
value_type
get
()
const
{
return
(Index ==
0
) ? m_left : m_right;
}
difference_type
length
()
const
{
return
static_cast
<
int
>(m_right) -
static_cast
<
int
>(m_left);
}
private:
unsigned
m_left, m_right;
};
struct
uint_intervals
: public std::vector<uint_interval>
{
uint_intervals
()
{}
uint_intervals
(
unsigned
left,
unsigned
right)
{
this
->
push_back
(
uint_interval
(left, right));
}
uint_intervals &
operator
()(
unsigned
left,
unsigned
right)
{
this
->
push_back
(
uint_interval
(left, right));
return
*
this
;
}
};
std::ostream&
operator
<<(std::ostream& os, uint_interval
const
& interval)
{
os <<
"
[
"
<< interval.
get
<
0
>() <<
"
,
"
<< interval.
get
<
1
>() <<
"
]
"
;
return
os;
}
template
<
typename
RangeOfIntervals>
inline
void
test_one
(std::string
const
& case_id,
RangeOfIntervals
const
& intervals,
typename
boost::range_value
<
RangeOfIntervals
>::type::difference_type expected_gap)
{
typedef
typename
boost::range_value<RangeOfIntervals>::type interval_type;
typedef
typename
interval_type::difference_type gap_type;
gap_type gap =
bg::maximum_gap
(intervals);
std::ostringstream stream;
for
(
typename
boost::range_const_iterator<RangeOfIntervals>::type
it =
boost::const_begin
(intervals);
it !=
boost::const_end
(intervals);
++it)
{
stream <<
"
"
<< *it;
}
#
ifdef
BOOST_GEOMETRY_TEST_DEBUG
std::cout <<
"
intervals:
"
<< stream.
str
() << std::endl;
std::cout <<
"
gap found?
"
<< ((gap >
0
) ?
"
yes
"
:
"
no
"
) << std::endl;
std::cout <<
"
max gap length:
"
<< gap << std::endl;
std::cout << std::endl << std::endl;
#
endif
BOOST_CHECK_MESSAGE
(gap == expected_gap,
case_id <<
"
; intervals:
"
<< stream.
str
()
<<
"
; expected:
"
<< expected_gap
<<
"
, detected:
"
<< gap);
}
BOOST_AUTO_TEST_CASE
( test_maximum_gap )
{
uint_intervals intervals;
intervals =
uint_intervals
(
3
,
4
)(
1
,
10
)(
5
,
11
)(
20
,
35
)(
12
,
14
)(
36
,
40
)(
39
,
41
)(
35
,
36
)(
37
,
37
)(
50
,
50
)(
50
,
51
);
test_one
(
"
case_01
"
, intervals,
9
);
intervals =
uint_intervals
(
3
,
4
)(
1
,
10
)(
5
,
11
)(
20
,
35
)(
52
,
60
)(
12
,
14
)(
36
,
40
)(
39
,
41
)(
35
,
36
)(
37
,
37
)(
55
,
56
);
test_one
(
"
case_02
"
, intervals,
11
);
intervals =
uint_intervals
(
3
,
4
);
test_one
(
"
case_03
"
, intervals,
0
);
intervals =
uint_intervals
(
3
,
4
)(
15
,
15
);
test_one
(
"
case_04
"
, intervals,
11
);
intervals =
uint_intervals
(
3
,
14
)(
5
,
5
)(
5
,
6
);
test_one
(
"
case_05
"
, intervals,
0
);
intervals =
uint_intervals
(
3
,
10
)(
15
,
15
)(
15
,
18
)(
15
,
16
);
test_one
(
"
case_06
"
, intervals,
5
);
intervals =
uint_intervals
(
38
,
41
)(
3
,
10
)(
15
,
15
)(
15
,
18
)(
15
,
16
)(
20
,
30
)(
22
,
30
)(
23
,
30
);
test_one
(
"
case_07
"
, intervals,
8
);
}
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