MAGETWO-39708: Catalog Price Rule has to be applied even if description only was changed

Author: slopukhov

app/code/Magento/CatalogRule/Test/Unit/Model/RuleTest.php

@@ -226,4 +226,51 @@ public function testAfterUpdate()
         $this->_ruleProductProcessor->expects($this->once())->method('getIndexer')->will($this->returnValue($indexer));
         $this->rule->afterSave();
     }
+
+    /**
+     * Test IsRuleBehaviorChanged action
+     *
+     * @dataProvider ruleData
+     * @param array $dataArray
+     * @param array $originDataArray
+     * @param bool $isObjectNew
+     * @param bool $result
+     *
+     * @return void
+     */
+    public function testIsRuleBehaviorChanged($dataArray, $originDataArray, $isObjectNew, $result)
+    {
+        $this->rule->setData('website_ids', []);
+        $this->rule->isObjectNew($isObjectNew);
+        $indexer = $this->getMock('\Magento\Indexer\Model\IndexerInterface');
+        $indexer->expects($this->any())->method('invalidate');
+        $this->_ruleProductProcessor->expects($this->any())->method('getIndexer')->will($this->returnValue($indexer));
+
+        foreach ($dataArray as $data) {
+            $this->rule->setData($data);
+        }
+        $this->rule->afterSave();
+
+        foreach ($originDataArray as $data) {
+            $this->rule->setOrigData($data);
+        }
+        $this->assertEquals($result, $this->rule->isRuleBehaviorChanged());
+    }
+
+    /**
+     * Data provider for isRuleBehaviorChanged test
+     *
+     * @return array
+     */
+    public function ruleData()
+    {
+        return [
+            [['new name', 'new description'], ['name', 'description'], false, false],
+            [['name', 'description'], ['name', 'description'], false, false],
+            [['name', 'important_data'], ['name', 'important_data'], false, false],
+            [['name', 'new important_data'], ['name', 'important_data'], false, true],
+            [['name', 'description'], ['name', 'description'], true, true],
+            [['name', 'description'], ['name', 'important_data'], true, true],
+        ];
+    }
 }