From d6238393e205423cdaffab5b4ed5b47a3751d1e8 Mon Sep 17 00:00:00 2001
From: Johan Vervloet <johan.vervloet@kuleuven.be>
Date: Mon, 2 Oct 2017 22:24:36 +0200
Subject: [PATCH] A unit test to illustrate CRM-21246.

Chaining Contact.get - Relationship.get - Contact.get does not work.
Added a test that passes as well.
---
 tests/phpunit/api/v3/RelationshipTest.php | 55 +++++++++++++++++++++++
 1 file changed, 55 insertions(+)

diff --git a/tests/phpunit/api/v3/RelationshipTest.php b/tests/phpunit/api/v3/RelationshipTest.php
index 040b98df5a..da50d23f1d 100644
--- a/tests/phpunit/api/v3/RelationshipTest.php
+++ b/tests/phpunit/api/v3/RelationshipTest.php
@@ -778,6 +778,61 @@ class api_v3_RelationshipTest extends CiviUnitTestCase {
     $this->assertEquals($result['count'], 0);
   }
 
+  /**
+   * Chain Relationship.get and to Contact.get.
+   */
+  public function testRelationshipGetWithChainedCall() {
+    // Create a relationship.
+    $createResult = $this->callAPISuccess('relationship',  'create', $this->_params);
+    $id = $createResult['id'];
+
+    // Try to retrieve it using chaining.
+    $params = array(
+      'relationship_type_id' => $this->_relTypeID,
+      'id' => $id,
+      'api.Contact.get' => array(
+        'id' => '$value.contact_id_b',
+      ),
+    );
+
+    $result = $this->callAPISuccess('relationship', 'get', $params);
+
+    $this->assertEquals(1, $result['count']);
+    $relationship = CRM_Utils_Array::first($result['values']);
+    $this->assertEquals(1, $relationship['api.Contact.get']['count']);
+    $contact = CRM_Utils_Array::first($relationship['api.Contact.get']['values']);
+    $this->assertEquals($this->_cId_b, $contact['id']);
+  }
+
+  /**
+   * Chain Contact.get to Relationship.get and again to Contact.get.
+   */
+  public function testRelationshipGetInChainedCall() {
+    // Create a relationship.
+    $this->callAPISuccess('relationship',  'create', $this->_params);
+
+    // Try to retrieve it using chaining.
+    $params = array(
+      'id' => $this->_cId_a,
+      'api.Relationship.get' => array(
+        'relationship_type_id' => $this->_relTypeID,
+        'contact_id_a' => '$value.id',
+        'api.Contact.get' => array(
+          'id' => '$value.contact_id_b',
+        ),
+      ),
+    );
+
+    $result = $this->callAPISuccess('contact', 'get', $params);
+    $this->assertEquals(1, $result['count']);
+    $contact = CRM_Utils_Array::first($result['values']);
+    $this->assertEquals(1, $contact['api.Relationship.get']['count']);
+    $relationship = CRM_Utils_Array::first($contact['api.Relationship.get']['values']);
+    $this->assertEquals(1, $relationship['api.Contact.get']['count']);
+    $contact = CRM_Utils_Array::first($relationship['api.Contact.get']['values']);
+    $this->assertEquals($this->_cId_b, $contact['id']);
+  }
+
   /**
    * Check with valid params array.
    * (The get function will behave differently without 'contact_id' passed
-- 
2.25.1