1 files changed, 90 insertions, 0 deletions
diff --git a/www/crm/wp-content/plugins/civicrm/civicrm/ext/api4/tests/phpunit/Service/Schema/SchemaMapperTest.php b/www/crm/wp-content/plugins/civicrm/civicrm/ext/api4/tests/phpunit/Service/Schema/SchemaMapperTest.php
new file mode 100644
index 00000000..04952f7b
--- /dev/null
+++ b/www/crm/wp-content/plugins/civicrm/civicrm/ext/api4/tests/phpunit/Service/Schema/SchemaMapperTest.php
@@ -0,0 +1,90 @@
+<?php
+
+namespace Civi\Test\Api4\Service\Schema;
+
+use Civi\Api4\Service\Schema\Joinable\Joinable;
+use Civi\Api4\Service\Schema\SchemaMap;
+use Civi\Api4\Service\Schema\Table;
+use Civi\Test\Api4\UnitTestCase;
+
+/**
+ * @group headless
+ */
+class SchemaMapperTest extends UnitTestCase {
+
+  public function testWillHaveNoPathWithNoTables() {
+    $map = new SchemaMap();
+    $this->assertEmpty($map->getPath('foo', 'bar'));
+  }
+
+  public function testWillHavePathWithSingleJump() {
+    $phoneTable = new Table('civicrm_phone');
+    $locationTable = new Table('civicrm_location_type');
+    $link = new Joinable('civicrm_location_type', 'id', 'location');
+    $phoneTable->addTableLink('location_type_id', $link);
+
+    $map = new SchemaMap();
+    $map->addTables([$phoneTable, $locationTable]);
+
+    $this->assertNotEmpty($map->getPath('civicrm_phone', 'location'));
+  }
+
+  public function testWillHavePathWithDoubleJump() {
+    $activity = new Table('activity');
+    $activityContact = new Table('activity_contact');
+    $middleLink = new Joinable('activity_contact', 'activity_id');
+    $contactLink = new Joinable('contact', 'id');
+    $activity->addTableLink('id', $middleLink);
+    $activityContact->addTableLink('contact_id', $contactLink);
+
+    $map = new SchemaMap();
+    $map->addTables([$activity, $activityContact]);
+
+    $this->assertNotEmpty($map->getPath('activity', 'contact'));
+  }
+
+  public function testPathWithTripleJoin() {
+    $first = new Table('first');
+    $second = new Table('second');
+    $third = new Table('third');
+    $first->addTableLink('id', new Joinable('second', 'id'));
+    $second->addTableLink('id', new Joinable('third', 'id'));
+    $third->addTableLink('id', new Joinable('fourth', 'id'));
+
+    $map = new SchemaMap();
+    $map->addTables([$first, $second, $third]);
+
+    $this->assertNotEmpty($map->getPath('first', 'fourth'));
+  }
+
+  public function testCircularReferenceWillNotBreakIt() {
+    $contactTable = new Table('contact');
+    $carTable = new Table('car');
+    $carLink = new Joinable('car', 'id');
+    $ownerLink = new Joinable('contact', 'id');
+    $contactTable->addTableLink('car_id', $carLink);
+    $carTable->addTableLink('owner_id', $ownerLink);
+
+    $map = new SchemaMap();
+    $map->addTables([$contactTable, $carTable]);
+
+    $this->assertEmpty($map->getPath('contact', 'foo'));
+  }
+
+  public function testCannotGoOverJoinLimit() {
+    $first = new Table('first');
+    $second = new Table('second');
+    $third = new Table('third');
+    $fourth = new Table('fourth');
+    $first->addTableLink('id', new Joinable('second', 'id'));
+    $second->addTableLink('id', new Joinable('third', 'id'));
+    $third->addTableLink('id', new Joinable('fourth', 'id'));
+    $fourth->addTableLink('id', new Joinable('fifth', 'id'));
+
+    $map = new SchemaMap();
+    $map->addTables([$first, $second, $third, $fourth]);
+
+    $this->assertEmpty($map->getPath('first', 'fifth'));
+  }
+
+}