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<?php declare(strict_types=1);
/*
* This file is part of sebastian/diff.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SebastianBergmann\Diff;
use PHPUnit\Framework\TestCase;
use SebastianBergmann\Diff\Output\AbstractChunkOutputBuilder;
use SebastianBergmann\Diff\Output\DiffOnlyOutputBuilder;
use SebastianBergmann\Diff\Output\UnifiedDiffOutputBuilder;
/**
* @covers SebastianBergmann\Diff\Differ
* @covers SebastianBergmann\Diff\Output\AbstractChunkOutputBuilder
* @covers SebastianBergmann\Diff\Output\DiffOnlyOutputBuilder
* @covers SebastianBergmann\Diff\Output\UnifiedDiffOutputBuilder
*
* @uses SebastianBergmann\Diff\MemoryEfficientLongestCommonSubsequenceCalculator
* @uses SebastianBergmann\Diff\TimeEfficientLongestCommonSubsequenceCalculator
* @uses SebastianBergmann\Diff\Chunk
* @uses SebastianBergmann\Diff\Diff
* @uses SebastianBergmann\Diff\Line
* @uses SebastianBergmann\Diff\Parser
*/
final class DifferTest extends TestCase
{
const WARNING = 3;
const REMOVED = 2;
const ADDED = 1;
const OLD = 0;
/**
* @var Differ
*/
private $differ;
protected function setUp()
{
$this->differ = new Differ;
}
/**
* @param array $expected
* @param string|array $from
* @param string|array $to
* @dataProvider arrayProvider
*/
public function testArrayRepresentationOfDiffCanBeRenderedUsingTimeEfficientLcsImplementation(array $expected, $from, $to)
{
$this->assertSame($expected, $this->differ->diffToArray($from, $to, new TimeEfficientLongestCommonSubsequenceCalculator));
}
/**
* @param string $expected
* @param string $from
* @param string $to
* @dataProvider textProvider
*/
public function testTextRepresentationOfDiffCanBeRenderedUsingTimeEfficientLcsImplementation(string $expected, string $from, string $to)
{
$this->assertSame($expected, $this->differ->diff($from, $to, new TimeEfficientLongestCommonSubsequenceCalculator));
}
/**
* @param array $expected
* @param string|array $from
* @param string|array $to
* @dataProvider arrayProvider
*/
public function testArrayRepresentationOfDiffCanBeRenderedUsingMemoryEfficientLcsImplementation(array $expected, $from, $to)
{
$this->assertSame($expected, $this->differ->diffToArray($from, $to, new MemoryEfficientLongestCommonSubsequenceCalculator));
}
/**
* @param string $expected
* @param string $from
* @param string $to
* @dataProvider textProvider
*/
public function testTextRepresentationOfDiffCanBeRenderedUsingMemoryEfficientLcsImplementation(string $expected, string $from, string $to)
{
$this->assertSame($expected, $this->differ->diff($from, $to, new MemoryEfficientLongestCommonSubsequenceCalculator));
}
/**
* @param string $expected
* @param string $from
* @param string $to
* @param string $header
* @dataProvider headerProvider
*/
public function testCustomHeaderCanBeUsed(string $expected, string $from, string $to, string $header)
{
$differ = new Differ(new UnifiedDiffOutputBuilder($header));
$this->assertSame(
$expected,
$differ->diff($from, $to)
);
}
public function headerProvider()
{
return [
[
"CUSTOM HEADER\n@@ @@\n-a\n+b\n",
'a',
'b',
'CUSTOM HEADER'
],
[
"CUSTOM HEADER\n@@ @@\n-a\n+b\n",
'a',
'b',
"CUSTOM HEADER\n"
],
[
"CUSTOM HEADER\n\n@@ @@\n-a\n+b\n",
'a',
'b',
"CUSTOM HEADER\n\n"
],
[
"@@ @@\n-a\n+b\n",
'a',
'b',
''
],
];
}
public function testTypesOtherThanArrayAndStringCanBePassed()
{
$this->assertSame(
"--- Original\n+++ New\n@@ @@\n-1\n+2\n",
$this->differ->diff(1, 2)
);
}
/**
* @param string $diff
* @param Diff[] $expected
* @dataProvider diffProvider
*/
public function testParser(string $diff, array $expected)
{
$parser = new Parser;
$result = $parser->parse($diff);
$this->assertEquals($expected, $result);
}
public function arrayProvider(): array
{
return [
[
[
['a', self::REMOVED],
['b', self::ADDED]
],
'a',
'b'
],
[
[
['ba', self::REMOVED],
['bc', self::ADDED]
],
'ba',
'bc'
],
[
[
['ab', self::REMOVED],
['cb', self::ADDED]
],
'ab',
'cb'
],
[
[
['abc', self::REMOVED],
['adc', self::ADDED]
],
'abc',
'adc'
],
[
[
['ab', self::REMOVED],
['abc', self::ADDED]
],
'ab',
'abc'
],
[
[
['bc', self::REMOVED],
['abc', self::ADDED]
],
'bc',
'abc'
],
[
[
['abc', self::REMOVED],
['abbc', self::ADDED]
],
'abc',
'abbc'
],
[
[
['abcdde', self::REMOVED],
['abcde', self::ADDED]
],
'abcdde',
'abcde'
],
'same start' => [
[
[17, self::OLD],
['b', self::REMOVED],
['d', self::ADDED],
],
[30 => 17, 'a' => 'b'],
[30 => 17, 'c' => 'd'],
],
'same end' => [
[
[1, self::REMOVED],
[2, self::ADDED],
['b', self::OLD],
],
[1 => 1, 'a' => 'b'],
[1 => 2, 'a' => 'b'],
],
'same start (2), same end (1)' => [
[
[17, self::OLD],
[2, self::OLD],
[4, self::REMOVED],
['a', self::ADDED],
[5, self::ADDED],
['x', self::OLD],
],
[30 => 17, 1 => 2, 2 => 4, 'z' => 'x'],
[30 => 17, 1 => 2, 3 => 'a', 2 => 5, 'z' => 'x'],
],
'same' => [
[
['x', self::OLD],
],
['z' => 'x'],
['z' => 'x'],
],
'diff' => [
[
['y', self::REMOVED],
['x', self::ADDED],
],
['x' => 'y'],
['z' => 'x'],
],
'diff 2' => [
[
['y', self::REMOVED],
['b', self::REMOVED],
['x', self::ADDED],
['d', self::ADDED],
],
['x' => 'y', 'a' => 'b'],
['z' => 'x', 'c' => 'd'],
],
'test line diff detection' => [
[
[
"#Warning: Strings contain different line endings!\n",
self::WARNING,
],
[
"<?php\r\n",
self::REMOVED,
],
[
"<?php\n",
self::ADDED,
],
],
"<?php\r\n",
"<?php\n",
],
'test line diff detection in array input' => [
[
[
"#Warning: Strings contain different line endings!\n",
self::WARNING,
],
[
"<?php\r\n",
self::REMOVED,
],
[
"<?php\n",
self::ADDED,
],
],
["<?php\r\n"],
["<?php\n"],
],
];
}
public function textProvider(): array
{
return [
[
"--- Original\n+++ New\n@@ @@\n-a\n+b\n",
'a',
'b'
],
[
"--- Original\n+++ New\n@@ @@\n-ba\n+bc\n",
'ba',
'bc'
],
[
"--- Original\n+++ New\n@@ @@\n-ab\n+cb\n",
'ab',
'cb'
],
[
"--- Original\n+++ New\n@@ @@\n-abc\n+adc\n",
'abc',
'adc'
],
[
"--- Original\n+++ New\n@@ @@\n-ab\n+abc\n",
'ab',
'abc'
],
[
"--- Original\n+++ New\n@@ @@\n-bc\n+abc\n",
'bc',
'abc'
],
[
"--- Original\n+++ New\n@@ @@\n-abc\n+abbc\n",
'abc',
'abbc'
],
[
"--- Original\n+++ New\n@@ @@\n-abcdde\n+abcde\n",
'abcdde',
'abcde'
],
[
"--- Original\n+++ New\n@@ @@\n-A\n+A1\n",
"A\nB",
"A1\nB",
],
[
<<<EOF
--- Original
+++ New
@@ @@
a
-b
+p
@@ @@
-j
+w
EOF
,
"a\nb\nc\nd\ne\nf\ng\nh\ni\nj\nk",
"a\np\nc\nd\ne\nf\ng\nh\ni\nw\nk",
],
[
<<<EOF
--- Original
+++ New
@@ @@
-A
+B
EOF
,
"A\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1",
"B\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1\n1",
],
[
"--- Original\n+++ New\n@@ @@\n #Warning: Strings contain different line endings!\n-<?php\r\n+<?php\n",
"<?php\r\nA\n",
"<?php\nA\n",
],
[
"--- Original\n+++ New\n@@ @@\n #Warning: Strings contain different line endings!\n-a\r\n+\n+c\r",
"a\r\n",
"\nc\r",
],
];
}
public function diffProvider(): array
{
$serialized_arr = <<<EOL
a:1:{i:0;O:27:"SebastianBergmann\Diff\Diff":3:{s:33:"