Added tests for module name reference in module.xml

Author: drpayyne

testData/reference/xml/ModuleNameReferenceRegistrar/moduleNameMustHaveReference/module.xml

@@ -0,0 +1,11 @@
+<?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:framework:Module/etc/module.xsd">
+    <module name="Magento_Catalog<caret>"/>
+</config>

testData/reference/xml/ModuleNameReferenceRegistrar/sequenceModuleNameMustHaveReference/module.xml

@@ -0,0 +1,15 @@
+<?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:framework:Module/etc/module.xsd">
+    <module name="Magento_Catalog">
+        <sequence>
+            <module name="Magento_Config<caret>"/>
+        </sequence>
+    </module>
+</config>

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

@@ -9,6 +9,7 @@
 import com.intellij.psi.PsiFile;
 import com.intellij.psi.PsiReference;
 import com.intellij.psi.ResolveResult;
+import com.intellij.psi.impl.file.PsiDirectoryImpl;
 import com.intellij.psi.xml.XmlAttributeValue;
 import com.intellij.psi.xml.XmlFile;
 import com.intellij.psi.xml.XmlTag;
@@ -113,6 +114,20 @@ protected void assertHasReferenceToXmlFile(final String fileName) {
         fail(String.format(referenceNotFound, fileName));
     }
 
+    protected void assertHasReferenceToDirectory(final String directoryName) {
+        for (final PsiReference psiReference : getElementFromCaret().getReferences()) {
+            final PsiElement resolvedElement = psiReference.resolve();
+            if (resolvedElement instanceof PsiDirectoryImpl
+                && ((PsiDirectoryImpl) resolvedElement).getName().equals(directoryName)) {
+                return;
+            }
+        }
+
+        final String referenceNotFound
+                = "Failed that element contains reference to the directory `%s`";
+        fail(String.format(referenceNotFound, directoryName));
+    }
+
     @SuppressWarnings("PMD")
     protected void assertHasReferencePhpClass(final String phpClassFqn) {
         final PsiElement element = getElementFromCaret();

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

@@ -0,0 +1,27 @@
+/*
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+package com.magento.idea.magento2plugin.reference.xml;
+
+public class ModuleNameReferenceRegistrarTest extends ReferenceXmlFixtureTestCase {
+
+    /**
+     * Tests for module name reference in module.xml
+     */
+    public void testModuleNameMustHaveReference() {
+        myFixture.configureByFile(this.getFixturePath("module.xml"));
+
+        assertHasReferenceToDirectory("module-catalog");
+    }
+
+    /**
+     * Tests for module name reference under sequence node in module.xml
+     */
+    public void testSequenceModuleNameMustHaveReference() {
+        myFixture.configureByFile(this.getFixturePath("module.xml"));
+
+        assertHasReferenceToDirectory("module-config");
+    }
+}