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TraversableUtilitiesTest.php
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<?php
declare
(
strict_types
=
1
);
namespace
Keruald\OmniTools\Tests\Collections
;
use
Keruald\OmniTools\Collections\TraversableUtilities
;
use
PHPUnit\Framework\TestCase
;
use
Countable
;
use
InvalidArgumentException
;
use
IteratorAggregate
;
use
Traversable
;
class
TraversableUtilitiesTest
extends
TestCase
{
/**
* @dataProvider provideCountables
*/
public
function
testCount
(
$expectedCount
,
$countable
)
{
$this
->
assertEquals
(
$expectedCount
,
TraversableUtilities
::
count
(
$countable
)
);
}
/**
* @dataProvider provideNotCountables
*/
public
function
testCountWithNotCountables
(
$notCountable
)
{
$this
->
expectException
(
"TypeError"
);
TraversableUtilities
::
count
(
$notCountable
);
}
/**
* @dataProvider providePureCountables
*/
public
function
testIsCountable
(
$countable
)
{
$this
->
assertTrue
(
TraversableUtilities
::
isCountable
(
$countable
));
}
/**
* @dataProvider provideIterableAndFirst
*/
public
function
testIsFirst
(
$expected
,
$iterable
)
{
$this
->
assertEquals
(
$expected
,
TraversableUtilities
::
first
(
$iterable
));
}
public
function
testIsFirstWithEmptyCollection
()
{
$this
->
expectException
(
InvalidArgumentException
::
class
);
TraversableUtilities
::
first
([]);
}
/**
* @dataProvider provideIterableAndFirst
*/
public
function
testIsFirstOr
(
$expected
,
$iterable
)
{
$actual
=
TraversableUtilities
::
firstOr
(
$iterable
,
666
);
$this
->
assertEquals
(
$expected
,
$actual
);
}
public
function
testIsFirstOrWithEmptyCollection
()
{
$actual
=
TraversableUtilities
::
firstOr
([],
666
);
$this
->
assertEquals
(
666
,
$actual
);
}
///
/// Data providers
///
public
function
provideCountables
()
:
iterable
{
yield
[
0
,
null
];
yield
[
0
,
false
];
yield
[
0
,
[]];
yield
[
3
,
[
"a"
,
"b"
,
"c"
]];
yield
[
42
,
new
class
implements
Countable
{
public
function
count
()
:
int
{
return
42
;
}
}
];
}
public
function
providePureCountables
()
:
iterable
{
yield
[[]];
yield
[[
"a"
,
"b"
,
"c"
]];
yield
[
new
class
implements
Countable
{
public
function
count
()
:
int
{
return
42
;
}
}
];
}
public
function
provideNotCountables
()
:
iterable
{
yield
[
true
];
yield
[
new
\stdClass
];
yield
[
0
];
yield
[
""
];
yield
[
"abc"
];
}
public
function
provideIterableAndFirst
()
:
iterable
{
yield
[
"a"
,
[
"a"
,
"b"
,
"c"
]];
yield
[
"apple"
,
[
"fruit"
=>
"apple"
,
"vegetable"
=>
"leeks"
]];
yield
[
42
,
new
class
implements
IteratorAggregate
{
public
function
getIterator
()
:
Traversable
{
yield
42
;
yield
100
;
}
}];
}
}
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