public function GraphCreationTest::testGraphCreation in Multiversion 8.2

Shape of Tree created is: 1 / \ 2 6 / \ 3 4 / 5

File

src/Tests/GraphCreationTest.php, line 42

Class

GraphCreationTest

Test the getGraph method from the RevisionTreeIndex class.

Namespace

Drupal\multiversion\Tests

Code

public function testGraphCreation() {
  $storage = $this->entityTypeManager
    ->getStorage('entity_test_rev');
  $entity = $storage
    ->create();
  $uuid = $entity
    ->uuid();

  // Create a conflict scenario to fully test the parsing.
  // Initial revision.
  $entity
    ->save();
  $revs[] = $entity->_rev->value;
  $entity
    ->save();
  $revs[] = $entity->_rev->value;
  $entity
    ->save();
  $revs[] = $leaf_one = $entity->_rev->value;
  $entity = $storage
    ->load(1);
  $this
    ->assertEqual($entity
    ->getRevisionId(), 3, 'Default revision has been set correctly.');

  // Create a new branch from the second revision.
  $entity = $storage
    ->loadRevision(2);
  $entity
    ->save();
  $revs[] = $leaf_two = $entity->_rev->value;

  // We now have two leafs at the tip of the tree.
  $leafs = [
    $leaf_one,
    $leaf_two,
  ];
  sort($leafs);
  $expected_leaf = array_pop($leafs);
  $entity = $storage
    ->load(1);
  $this
    ->assertEqual($entity->_rev->value, $expected_leaf, 'The correct revision won while having two open revisions.');

  // Continue the last branch.
  $entity = $storage
    ->loadRevision(4);
  $entity
    ->save();
  $revs[] = $entity->_rev->value;
  $entity = $storage
    ->load(1);
  $this
    ->assertEqual($entity
    ->getRevisionId(), 5, 'Default revision has been set correctly.');

  // Create a new branch based on the first revision.
  $entity = $storage
    ->loadRevision(1);
  $entity
    ->save();
  $revs[] = $entity->_rev->value;
  $entity = $storage
    ->load(1);
  $this
    ->assertEqual($entity
    ->getRevisionId(), 5, 'Default revision has been set correctly.');

  // Creating graph from the revision tree.
  $graph = $this->tree
    ->getGraph($uuid);

  // Storing the graph's vertices in $vertices array.
  $vertices = $graph
    ->getVertices()
    ->getMap();
  foreach ($vertices[$revs[1]]
    ->getVerticesEdgeFrom() as $parent) {
    $this
      ->assertEqual($parent
      ->getId(), $revs[0], 'node 2\'s parent is 1');
  }
  foreach ($vertices[$revs[2]]
    ->getVerticesEdgeFrom() as $parent) {
    $this
      ->assertEqual($parent
      ->getId(), $revs[1], 'node 3\'s parent is 2');
  }
  foreach ($vertices[$revs[3]]
    ->getVerticesEdgeFrom() as $parent) {
    $this
      ->assertEqual($parent
      ->getId(), $revs[1], 'node 4\'s parent is 2');
  }
  foreach ($vertices[$revs[4]]
    ->getVerticesEdgeFrom() as $parent) {
    $this
      ->assertEqual($parent
      ->getId(), $revs[3], 'node 5\'s parent is 4');
  }
  foreach ($vertices[$revs[5]]
    ->getVerticesEdgeFrom() as $parent) {
    $this
      ->assertEqual($parent
      ->getId(), $revs[0], 'node 6\'s parent is 1');
  }
}