Covered PhpJobMethodReferenceProvider with tests

src/com/magento/idea/magento2plugin/reference/provider/PhpJobMethodReferenceProvider.java

@@ -28,22 +28,22 @@ public class PhpJobMethodReferenceProvider extends PsiReferenceProvider {
 
     @NotNull
     @Override
-    public PsiReference[] getReferencesByElement(@NotNull PsiElement element, @NotNull ProcessingContext context) {
-        if (!(element instanceof XmlElement)) {
-            return PsiReference.EMPTY_ARRAY;
-        }
-
-        List<PsiReference> psiReferences = new ArrayList<>();
-
-        String methodName = StringUtil.unquoteString(element.getText());
+    public PsiReference[] getReferencesByElement(
+            @NotNull final PsiElement element,
+            @NotNull final ProcessingContext context
+    ) {
+        final List<PsiReference> psiReferences = new ArrayList<>();
+        final String methodName = StringUtil.unquoteString(element.getText());
+        final PhpClass phpClass = DiIndex.getPhpClassOfJobMethod((XmlElement) element);
 
-        PhpClass phpClass = DiIndex.getPhpClassOfJobMethod((XmlElement) element);
         if (phpClass != null) {
-            Collection<Method> methods = phpClass.getMethods();
-            methods.removeIf(method -> !method.getName().contains(methodName));
-            psiReferences.add(new PolyVariantReferenceBase(element, methods));
+            final Collection<Method> methods = phpClass.getMethods();
+            methods.removeIf(method -> !method.getName().matches(methodName));
+            if (!methods.isEmpty()) {
+                psiReferences.add(new PolyVariantReferenceBase(element, methods));
+            }
         }
 
-        return psiReferences.toArray(new PsiReference[psiReferences.size()]);
+        return psiReferences.toArray(new PsiReference[0]);
     }
 }

testData/reference/xml/CrontabReferenceRegistrar/crontabMethodMustHaveReference/crontab.xml

@@ -8,8 +8,10 @@
 <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Cron:etc/crontab.xsd">
     <group id="default">
-        <job name="test_catalog_index_refresh_price" instance="Magento\Catalog\Cron\RefreshSpecialPrices" method="execute<caret>">
-            <schedule>0 * * * *</schedule>
+        <job name="catalog_index_refresh_price"
+             instance="Magento\Catalog\Cron\RefreshSpecialPrices"
+             method="execute<caret>">
+            <schedule>* * * * *</schedule>
         </job>
     </group>
 </config>

testData/reference/xml/CrontabReferenceRegistrar/crontabMethodMustNotHaveReference/crontab.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0"?>
+<!--
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+-->
+<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Cron:etc/crontab.xsd">
+    <group id="default">
+        <job name="catalog_index_refresh_price"
+             instance="Magento\Catalog\Cron\RefreshSpecialPrices"
+             method="notExecute<caret>">
+            <schedule>* * * * *</schedule>
+        </job>
+    </group>
+</config>

tests/com/magento/idea/magento2plugin/reference/BaseReferenceTestCase.java

@@ -188,7 +188,7 @@ protected void assertHasReferenceToClassMethod(
         final PsiElement element = getElementFromCaret();
         final PsiReference[] references = element.getReferences();
         final String actualClassName = ((PhpClass) references[references.length - 1].resolve()
-                .getParent()).getFQN();
+                .getParent()).getPresentableFQN();
         final String actualMethodName = ((Method) references[references.length - 1].resolve())
                 .getName();
 

tests/com/magento/idea/magento2plugin/reference/xml/CrontabReferenceRegistrarTest.java

@@ -8,16 +8,36 @@
 import com.magento.idea.magento2plugin.magento.files.CrontabXmlTemplate;
 
 public class CrontabReferenceRegistrarTest extends ReferenceXmlFixtureTestCase {
-    private static final String EXPECTED_REFERENCE = "Magento\\Catalog\\Cron\\RefreshSpecialPrices";
+    private static final String EXPECTED_CLASS = "Magento\\Catalog\\Cron\\RefreshSpecialPrices";
+    private static final String EXPECTED_METHOD = "execute";
 
     /**
-     * Test instance attribute of the crontab.xml file
-     * must have reference.
+     * Test instance attribute of the crontab.xml file must have reference.
      */
     public void testCrontabInstanceMustHaveReference() {
-        final String filePath = this.getFixturePath(CrontabXmlTemplate.FILE_NAME);
-        myFixture.configureByFile(filePath);
+        myFixture.configureByFile(this.getFixturePath(CrontabXmlTemplate.FILE_NAME));
 
-        assertHasReferencePhpClass(EXPECTED_REFERENCE);
+        assertHasReferencePhpClass(EXPECTED_CLASS);
+    }
+
+    /**
+     * Tests for reference to valid PHP method in crontab.xml.
+     */
+    public void testCrontabMethodMustHaveReference() {
+        myFixture.configureByFile(this.getFixturePath(CrontabXmlTemplate.FILE_NAME));
+
+        assertHasReferenceToClassMethod(
+                EXPECTED_CLASS,
+                EXPECTED_METHOD
+        );
+    }
+
+    /**
+     * Tests for no reference to invalid PHP method in crontab.xml.
+     */
+    public void testCrontabMethodMustNotHaveReference() {
+        myFixture.configureByFile(this.getFixturePath(CrontabXmlTemplate.FILE_NAME));
+
+        assertEmptyReference();
     }
 }

tests/com/magento/idea/magento2plugin/reference/xml/WebApiMethodReferenceRegistrarTest.java

@@ -14,7 +14,7 @@ public void testWebApiMethodMustHaveReference() {
         myFixture.configureByFile(this.getFixturePath("webapi.xml"));
 
         assertHasReferenceToClassMethod(
-                "\\Magento\\Catalog\\Api\\ProductRepositoryInterface",
+                "Magento\\Catalog\\Api\\ProductRepositoryInterface",
                 "save"
         );
     }