Add Failing Test

issue: #257

package-lock.json

@@ -1,6 +1,6 @@
 {
     "name": "xml",
-    "version": "2.3.2",
+    "version": "2.4.0",
     "lockfileVersion": 1,
     "requires": true,
     "dependencies": {

src/test/extension.test.ts

@@ -44,7 +44,7 @@ describe("V2XmlFormatter", () => {
             testFormatter(xmlFormatter, options, "preformatted");
         });
 
-        it ("should preserve line breaks between elements", () => {
+        it("should preserve line breaks between elements", () => {
             testFormatter(xmlFormatter, options, "preserve-breaks");
         });
 
@@ -95,6 +95,10 @@ describe("V2XmlFormatter", () => {
         it("should not remove spaces between the node name and the first attribute within CDATA", () => {
             testFormatter(xmlFormatter, options, "issue-227");
         });
+
+        it("should handle mixed content as a child of another element", () => {
+            testFormatter(xmlFormatter, options, "issue-257");
+        });
     });
 
 });

src/test/test-data/issue-257.formatted.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
+    <xsl:output method="xml" encoding="UTF-8" indent="yes" />
+
+    <xsl:template match="/">
+        <file>
+            <xsl:apply-templates />
+        </file>
+    </xsl:template>
+
+    <xsl:template match="*">
+        <xsl:message terminate="no">
+            WARNING: Unmatched element: <xsl:value-of select="name()" />
+        </xsl:message>
+        <xsl:apply-templates />
+    </xsl:template>
+
+</xsl:stylesheet>

src/test/test-data/issue-257.unformatted.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xsl:stylesheet version="2.0" 
+    xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
+    <xsl:output method="xml" encoding="UTF-8" indent="yes" />
+
+    <xsl:template match="/">
+        <file>
+            <xsl:apply-templates />
+        </file>
+    </xsl:template>
+
+    <xsl:template match="*">
+        <xsl:message terminate="no">
+            WARNING: Unmatched element: <xsl:value-of select="name()"/>
+        </xsl:message>
+        <xsl:apply-templates/>
+    </xsl:template>
+
+</xsl:stylesheet>