diff --git a/composer.json b/composer.json
index 7bffffe..a298fba 100644
--- a/composer.json
+++ b/composer.json
@@ -13,6 +13,7 @@
     "require-dev": {
         "ext-json": "*",
         "ext-mbstring": "*",
+        "ext-simplexml": "*",
         "phpunit/phpunit": "6.*"
     }
 }
diff --git a/src/include/class-wc-retailcrm-icml.php b/src/include/class-wc-retailcrm-icml.php
index b703c16..bdc6ec4 100644
--- a/src/include/class-wc-retailcrm-icml.php
+++ b/src/include/class-wc-retailcrm-icml.php
@@ -413,7 +413,9 @@ if ( ! class_exists( 'WC_Retailcrm_Icml' ) ) :
                     'name' => $term->name
                 );
 
-                $thumbnail_id = get_woocommerce_term_meta($term->term_id, 'thumbnail_id', true);
+                $thumbnail_id = function_exists('get_term_meta')
+                    ? get_term_meta($term->term_id, 'thumbnail_id', true)
+                    : get_woocommerce_term_meta($term->term_id, 'thumbnail_id', true);
                 $picture = wp_get_attachment_url($thumbnail_id);
 
                 if ($picture) {
diff --git a/tests/bootstrap.php b/tests/bootstrap.php
index ed438a0..c2e29d6 100644
--- a/tests/bootstrap.php
+++ b/tests/bootstrap.php
@@ -17,6 +17,7 @@ function _manually_load_plugin() {
     require $plugin_dir . 'src/include/class-wc-retailcrm-ga.php';
     require $plugin_dir . 'src/include/class-wc-retailcrm-daemon-collector.php';
     require $plugin_dir . 'src/include/class-wc-retailcrm-history.php';
+    require $plugin_dir . 'src/include/class-wc-retailcrm-icml.php';
     require $plugin_dir . 'src/retailcrm.php';
 }
 
diff --git a/tests/test-wc-retailcrm-icml.php b/tests/test-wc-retailcrm-icml.php
new file mode 100644
index 0000000..883f721
--- /dev/null
+++ b/tests/test-wc-retailcrm-icml.php
@@ -0,0 +1,36 @@
+<?php
+
+class WC_Retailcrm_Icml_Test extends WC_Retailcrm_Test_Case_Helper
+{
+    public function setUp()
+    {
+        for ($i = 0; $i < 10; $i++) {
+            WC_Helper_Product::create_simple_product();
+        }
+
+        wp_insert_term(
+            'Test', // the term
+            'product_cat', // the taxonomy
+            array(
+                'description'=> 'Test',
+                'slug' => 'test'
+            )
+        );
+    }
+
+    public function testGenerate()
+    {
+        $icml = new WC_Retailcrm_Icml();
+        $icml->generate();
+
+        $this->assertFileExists(ABSPATH . 'retailcrm.xml');
+        $xml = simplexml_load_file(ABSPATH . 'retailcrm.xml');
+        $res = $xml->xpath('/yml_catalog/shop/categories/category[@id]');
+
+        $this->assertNotEmpty($res);
+
+        foreach ($res as $node) {
+            $this->assertEquals('category', $node->getName());
+        }
+    }
+}
diff --git a/tests/test-wc-retailcrm-plugin.php b/tests/test-wc-retailcrm-plugin.php
index d762c2d..f858c87 100644
--- a/tests/test-wc-retailcrm-plugin.php
+++ b/tests/test-wc-retailcrm-plugin.php
@@ -42,6 +42,19 @@ class WC_Retailcrm_Plugin_Test extends WC_Retailcrm_Test_Case_Helper
         }    
     }
 
+    public function test_filter_cron_schedules()
+    {
+        $plugin = WC_Retailcrm_Plugin::getInstance(dirname(__DIR__ . '/../src/retailcrm.php'));
+        $schedules = $plugin->filter_cron_schedules(array());
+
+        $this->assertNotEmpty($schedules['five_minutes']);
+        $this->assertEquals(300, $schedules['five_minutes']['interval']);
+        $this->assertNotEmpty($schedules['three_hours']);
+        $this->assertEquals(10800, $schedules['three_hours']['interval']);
+        $this->assertNotEmpty($schedules['fiveteen_minutes']);
+        $this->assertEquals(900, $schedules['fiveteen_minutes']['interval']);
+    }
+
     private function getResponseData()
     {
         return array(