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DifferentialHunkParserTestCase.php
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Thu, May 9, 18:16

DifferentialHunkParserTestCase.php
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<?php
final class DifferentialHunkParserTestCase extends PhabricatorTestCase {
private function createComment() {
$comment = new DifferentialInlineComment();
return $comment;
}
private function createHunk(
$old_offset,
$old_len,
$new_offset,
$new_len,
$changes) {
$hunk = id(new DifferentialHunkModern())
->setOldOffset($old_offset)
->setOldLen($old_len)
->setNewOffset($new_offset)
->setNewLen($new_len)
->setChanges($changes);
return $hunk;
}
// Returns a change that consists of a single hunk, starting at line 1.
private function createSingleChange($old_lines, $new_lines, $changes) {
return array(
0 => $this->createHunk(1, $old_lines, 1, $new_lines, $changes),
);
}
private function createHunksFromFile($name) {
$data = Filesystem::readFile(dirname(__FILE__).'/data/'.$name);
$parser = new ArcanistDiffParser();
$changes = $parser->parseDiff($data);
if (count($changes) !== 1) {
throw new Exception("Expected 1 changeset for '{$name}'!");
}
$diff = DifferentialDiff::newFromRawChanges($changes);
return head($diff->getChangesets())->getHunks();
}
public function testOneLineOldComment() {
$parser = new DifferentialHunkParser();
$hunks = $this->createSingleChange(1, 0, '-a');
$context = $parser->makeContextDiff(
$hunks,
0,
1,
0,
0);
$this->assertEqual("@@ -1,1 @@\n-a", $context);
}
public function testOneLineNewComment() {
$parser = new DifferentialHunkParser();
$hunks = $this->createSingleChange(0, 1, '+a');
$context = $parser->makeContextDiff(
$hunks,
1,
1,
0,
0);
$this->assertEqual("@@ +1,1 @@\n+a", $context);
}
public function testCannotFindContext() {
$parser = new DifferentialHunkParser();
$hunks = $this->createSingleChange(0, 1, '+a');
$context = $parser->makeContextDiff(
$hunks,
1,
2,
0,
0);
$this->assertEqual('', $context);
}
public function testOverlapFromStartOfHunk() {
$parser = new DifferentialHunkParser();
$hunks = array(
0 => $this->createHunk(23, 2, 42, 2, " 1\n 2"),
);
$context = $parser->makeContextDiff(
$hunks,
1,
41,
1,
0);
$this->assertEqual("@@ -23,1 +42,1 @@\n 1", $context);
}
public function testOverlapAfterEndOfHunk() {
$parser = new DifferentialHunkParser();
$hunks = array(
0 => $this->createHunk(23, 2, 42, 2, " 1\n 2"),
);
$context = $parser->makeContextDiff(
$hunks,
1,
43,
1,
0);
$this->assertEqual("@@ -24,1 +43,1 @@\n 2", $context);
}
public function testInclusionOfNewFileInOldCommentFromStart() {
$parser = new DifferentialHunkParser();
$hunks = $this->createSingleChange(2, 3,
"+n1\n".
" e1/2\n".
"-o2\n".
"+n3\n");
$context = $parser->makeContextDiff(
$hunks,
0,
1,
1,
0);
$this->assertEqual(
"@@ -1,2 +2,1 @@\n".
" e1/2\n".
"-o2", $context);
}
public function testInclusionOfOldFileInNewCommentFromStart() {
$parser = new DifferentialHunkParser();
$hunks = $this->createSingleChange(2, 2,
"-o1\n".
" e2/1\n".
"-o3\n".
"+n2\n");
$context = $parser->makeContextDiff(
$hunks,
1,
1,
1,
0);
$this->assertEqual(
"@@ -2,1 +1,2 @@\n".
" e2/1\n".
"+n2", $context);
}
public function testNoNewlineAtEndOfFile() {
$parser = new DifferentialHunkParser();
$hunks = $this->createSingleChange(0, 1,
"+a\n".
"\\No newline at end of file");
// Note that this only works with additional context.
$context = $parser->makeContextDiff(
$hunks,
1,
2,
0,
1);
$this->assertEqual(
"@@ +1,1 @@\n".
"+a\n".
"\\No newline at end of file", $context);
}
public function testMultiLineNewComment() {
$parser = new DifferentialHunkParser();
$hunks = $this->createSingleChange(7, 7,
" e1\n".
" e2\n".
"-o3\n".
"-o4\n".
"+n3\n".
" e5/4\n".
" e6/5\n".
"+n6\n".
" e7\n");
$context = $parser->makeContextDiff(
$hunks,
1,
2,
4,
0);
$this->assertEqual(
"@@ -2,5 +2,5 @@\n".
" e2\n".
"-o3\n".
"-o4\n".
"+n3\n".
" e5/4\n".
" e6/5\n".
"+n6", $context);
}
public function testMultiLineOldComment() {
$parser = new DifferentialHunkParser();
$hunks = $this->createSingleChange(7, 7,
" e1\n".
" e2\n".
"-o3\n".
"-o4\n".
"+n3\n".
" e5/4\n".
" e6/5\n".
"+n6\n".
" e7\n");
$context = $parser->makeContextDiff(
$hunks,
0,
2,
4,
0);
$this->assertEqual(
"@@ -2,5 +2,4 @@\n".
" e2\n".
"-o3\n".
"-o4\n".
"+n3\n".
" e5/4\n".
" e6/5", $context);
}
public function testInclusionOfNewFileInOldCommentFromStartWithContext() {
$parser = new DifferentialHunkParser();
$hunks = $this->createSingleChange(2, 3,
"+n1\n".
" e1/2\n".
"-o2\n".
"+n3\n");
$context = $parser->makeContextDiff(
$hunks,
0,
1,
1,
1);
$this->assertEqual(
"@@ -1,2 +1,2 @@\n".
"+n1\n".
" e1/2\n".
"-o2", $context);
}
public function testInclusionOfOldFileInNewCommentFromStartWithContext() {
$parser = new DifferentialHunkParser();
$hunks = $this->createSingleChange(2, 2,
"-o1\n".
" e2/1\n".
"-o3\n".
"+n2\n");
$context = $parser->makeContextDiff(
$hunks,
1,
1,
1,
1);
$this->assertEqual(
"@@ -1,3 +1,2 @@\n".
"-o1\n".
" e2/1\n".
"-o3\n".
"+n2", $context);
}
public function testMissingContext() {
$tests = array(
'missing_context.diff' => array(
4 => true,
),
'missing_context_2.diff' => array(
5 => true,
),
'missing_context_3.diff' => array(
4 => true,
13 => true,
),
);
foreach ($tests as $name => $expect) {
$hunks = $this->createHunksFromFile($name);
$parser = new DifferentialHunkParser();
$actual = $parser->getHunkStartLines($hunks);
$this->assertEqual($expect, $actual, $name);
}
}
}

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