tests

src/test/kotlin/org/jetbrains/plugins/template/MyPluginTest.kt

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+package org.jetbrains.plugins.template
+
+import com.intellij.ide.highlighter.XmlFileType
+import com.intellij.psi.xml.XmlFile
+import com.intellij.testFramework.TestDataPath
+import com.intellij.testFramework.fixtures.BasePlatformTestCase
+import com.intellij.util.PsiErrorElementUtil
+
+@TestDataPath("\$CONTENT_ROOT/src/test/testData")
+class MyPluginTest : BasePlatformTestCase() {
+
+    fun testXMLFile() {
+        val psiFile = myFixture.configureByText(XmlFileType.INSTANCE, "<foo>bar</foo>")
+        val xmlFile = assertInstanceOf(psiFile, XmlFile::class.java)
+
+        assertFalse(PsiErrorElementUtil.hasErrors(project, xmlFile.virtualFile))
+
+        assertNotNull(xmlFile.rootTag)
+
+        xmlFile.rootTag?.let {
+            assertEquals("foo", it.name)
+            assertEquals("bar", it.value.text)
+        }
+    }
+
+    override fun getTestDataPath() = "src/test/testData/rename"
+
+    fun testRename() {
+        myFixture.testRename("foo.xml", "foo_after.xml", "a2")
+    }
+}

src/test/testData/rename/foo.xml

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+<root>
+    <a<caret>1>Foo</a1>
+</root>

src/test/testData/rename/foo_after.xml

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+<root>
+    <a2>Foo</a2>
+</root>