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phorge/src/applications/differential/storage/__tests__/DifferentialDiffTestCase.php
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DifferentialDiffTestCase.php
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<?php
final class DifferentialDiffTestCase extends PhutilTestCase {
public function testDetectCopiedCode() {
$copies = $this->detectCopiesIn('lint_engine.diff');
$this->assertEqual(
array_combine(range(237, 252), range(167, 182)),
ipull($copies, 1));
}
public function testDetectCopiedOverlaidCode() {
$copies = $this->detectCopiesIn('copy_overlay.diff');
$this->assertEqual(
array(
7 => 22,
8 => 23,
9 => 24,
10 => 25,
11 => 26,
12 => 27,
),
ipull($copies, 1));
}
private function detectCopiesIn($file) {
$root = dirname(__FILE__).'/diff/';
$parser = new ArcanistDiffParser();
$diff = DifferentialDiff::newFromRawChanges(
PhabricatorUser::getOmnipotentUser(),
$parser->parseDiff(Filesystem::readFile($root.$file)));
return idx(head($diff->getChangesets())->getMetadata(), 'copy:lines');
}
public function testDetectSlowCopiedCode() {
// This tests that the detector has a reasonable runtime when a diff
// contains a very large number of identical lines. See T5041.
$parser = new ArcanistDiffParser();
$line = str_repeat('x', 60);
$oline = '-'.$line."\n";
$nline = '+'.$line."\n";
$n = 1000;
$oblock = str_repeat($oline, $n);
$nblock = str_repeat($nline, $n);
$raw_diff = <<<EODIFF
diff --git a/dst b/dst
new file mode 100644
index 0000000..1234567
--- /dev/null
+++ b/dst
@@ -0,0 +1,{$n} @@
{$nblock}
diff --git a/src b/src
deleted file mode 100644
index 123457..0000000
--- a/src
+++ /dev/null
@@ -1,{$n} +0,0 @@
{$oblock}
EODIFF;
$diff = DifferentialDiff::newFromRawChanges(
PhabricatorUser::getOmnipotentUser(),
$parser->parseDiff($raw_diff));
$this->assertTrue(true);
}
}

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