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phorge/src/applications/differential/storage/__tests__/DifferentialAdjustmentMapTestCase.php
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DifferentialAdjustmentMapTestCase.php
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<?php
final class DifferentialAdjustmentMapTestCase extends PhutilTestCase {
public function testBasicMaps() {
$change_map = array(
1 => array(1),
2 => array(2),
3 => array(3),
4 => array(),
5 => array(),
6 => array(),
7 => array(4),
8 => array(5),
9 => array(6),
10 => array(7),
11 => array(8),
12 => array(9),
13 => array(10),
14 => array(11),
15 => array(12),
16 => array(13),
17 => array(14),
18 => array(15),
19 => array(16),
20 => array(17, 20),
21 => array(21),
22 => array(22),
23 => array(23),
24 => array(24),
25 => array(25),
26 => array(26),
);
$hunks = $this->loadHunks('add.diff');
$this->assertEqual(
array(
0 => array(1, 26),
),
DifferentialLineAdjustmentMap::newFromHunks($hunks)->getMap());
$hunks = $this->loadHunks('change.diff');
$this->assertEqual(
$change_map,
DifferentialLineAdjustmentMap::newFromHunks($hunks)->getMap());
$hunks = $this->loadHunks('remove.diff');
$this->assertEqual(
array_fill_keys(range(1, 26), array()),
DifferentialLineAdjustmentMap::newFromHunks($hunks)->getMap());
// With the contextless diff, we don't get the last few similar lines
// in the map.
$reduced_map = $change_map;
unset($reduced_map[24]);
unset($reduced_map[25]);
unset($reduced_map[26]);
$hunks = $this->loadHunks('context.diff');
$this->assertEqual(
$reduced_map,
DifferentialLineAdjustmentMap::newFromHunks($hunks)->getMap());
}
public function testInverseMaps() {
$change_map = array(
1 => array(1),
2 => array(2),
3 => array(3, 6),
4 => array(7),
5 => array(8),
6 => array(9),
7 => array(10),
8 => array(11),
9 => array(12),
10 => array(13),
11 => array(14),
12 => array(15),
13 => array(16),
14 => array(17),
15 => array(18),
16 => array(19),
17 => array(20),
18 => array(),
19 => array(),
20 => array(),
21 => array(21),
22 => array(22),
23 => array(23),
24 => array(24),
25 => array(25),
26 => array(26),
);
$hunks = $this->loadHunks('add.diff');
$this->assertEqual(
array_fill_keys(range(1, 26), array()),
DifferentialLineAdjustmentMap::newInverseMap(
DifferentialLineAdjustmentMap::newFromHunks($hunks))->getMap());
$hunks = $this->loadHunks('change.diff');
$this->assertEqual(
$change_map,
DifferentialLineAdjustmentMap::newInverseMap(
DifferentialLineAdjustmentMap::newFromHunks($hunks))->getMap());
$hunks = $this->loadHunks('remove.diff');
$this->assertEqual(
array(
0 => array(1, 26),
),
DifferentialLineAdjustmentMap::newInverseMap(
DifferentialLineAdjustmentMap::newFromHunks($hunks))->getMap());
// With the contextless diff, we don't get the last few similar lines
// in the map.
$reduced_map = $change_map;
unset($reduced_map[24]);
unset($reduced_map[25]);
unset($reduced_map[26]);
$hunks = $this->loadHunks('context.diff');
$this->assertEqual(
$reduced_map,
DifferentialLineAdjustmentMap::newInverseMap(
DifferentialLineAdjustmentMap::newFromHunks($hunks))->getMap());
}
public function testNearestMaps() {
$change_map = array(
1 => array(1),
2 => array(2),
3 => array(3),
4 => array(-3, -4),
5 => array(-3, -4),
6 => array(-3, -4),
7 => array(4),
8 => array(5),
9 => array(6),
10 => array(7),
11 => array(8),
12 => array(9),
13 => array(10),
14 => array(11),
15 => array(12),
16 => array(13),
17 => array(14),
18 => array(15),
19 => array(16),
20 => array(17, 20),
21 => array(21),
22 => array(22),
23 => array(23),
24 => array(24),
25 => array(25),
26 => array(26),
);
$hunks = $this->loadHunks('add.diff');
$map = DifferentialLineAdjustmentMap::newFromHunks($hunks);
$this->assertEqual(
array(
0 => array(1, 26),
),
$map->getNearestMap());
$this->assertEqual(26, $map->getFinalOffset());
$hunks = $this->loadHunks('change.diff');
$map = DifferentialLineAdjustmentMap::newFromHunks($hunks);
$this->assertEqual(
$change_map,
$map->getNearestMap());
$this->assertEqual(0, $map->getFinalOffset());
$hunks = $this->loadHunks('remove.diff');
$map = DifferentialLineAdjustmentMap::newFromHunks($hunks);
$this->assertEqual(
array_fill_keys(
range(1, 26),
array(0, 0)),
$map->getNearestMap());
$this->assertEqual(-26, $map->getFinalOffset());
$reduced_map = $change_map;
unset($reduced_map[24]);
unset($reduced_map[25]);
unset($reduced_map[26]);
$hunks = $this->loadHunks('context.diff');
$map = DifferentialLineAdjustmentMap::newFromHunks($hunks);
$this->assertEqual(
$reduced_map,
$map->getNearestMap());
$this->assertEqual(0, $map->getFinalOffset());
$hunks = $this->loadHunks('insert.diff');
$map = DifferentialLineAdjustmentMap::newFromHunks($hunks);
$this->assertEqual(
array(
1 => array(1),
2 => array(2),
3 => array(3),
4 => array(4),
5 => array(5),
6 => array(6),
7 => array(7),
8 => array(8),
9 => array(9),
10 => array(10, 13),
11 => array(14),
12 => array(15),
13 => array(16),
),
$map->getNearestMap());
$this->assertEqual(3, $map->getFinalOffset());
}
public function testChainMaps() {
// This test simulates porting inlines forward across a rebase.
// Part 1 is the original diff.
// Part 2 is the rebase, which we would normally compute synthetically.
// Part 3 is the updated diff against the rebased changes.
$diff1 = $this->loadHunks('chain.adjust.1.diff');
$diff2 = $this->loadHunks('chain.adjust.2.diff');
$diff3 = $this->loadHunks('chain.adjust.3.diff');
$map = DifferentialLineAdjustmentMap::newInverseMap(
DifferentialLineAdjustmentMap::newFromHunks($diff1));
$map->addMapToChain(
DifferentialLineAdjustmentMap::newFromHunks($diff2));
$map->addMapToChain(
DifferentialLineAdjustmentMap::newFromHunks($diff3));
$actual = array();
for ($ii = 1; $ii <= 13; $ii++) {
$actual[$ii] = array(
$map->mapLine($ii, false),
$map->mapLine($ii, true),
);
}
$this->assertEqual(
array(
1 => array(array(false, false, 1), array(false, false, 1)),
2 => array(array(true, false, 1), array(true, false, 2)),
3 => array(array(true, false, 1), array(true, false, 2)),
4 => array(array(false, false, 2), array(false, false, 2)),
5 => array(array(false, false, 3), array(false, false, 3)),
6 => array(array(false, false, 4), array(false, false, 4)),
7 => array(array(false, false, 5), array(false, false, 8)),
8 => array(array(false, 0, 5), array(false, false, 9)),
9 => array(array(false, 1, 5), array(false, false, 9)),
10 => array(array(false, 2, 5), array(false, false, 9)),
11 => array(array(false, false, 9), array(false, false, 9)),
12 => array(array(false, false, 10), array(false, false, 10)),
13 => array(array(false, false, 11), array(false, false, 11)),
),
$actual);
}
private function loadHunks($name) {
$root = dirname(__FILE__).'/map/';
$data = Filesystem::readFile($root.$name);
$parser = new ArcanistDiffParser();
$changes = $parser->parseDiff($data);
$viewer = PhabricatorUser::getOmnipotentUser();
$diff = DifferentialDiff::newFromRawChanges($viewer, $changes);
$changesets = $diff->getChangesets();
if (count($changesets) !== 1) {
throw new Exception(
pht(
'Expected exactly one changeset from "%s".',
$name));
}
$changeset = head($changesets);
return $changeset->getHunks();
}
}

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