How to search for a file in a document set? - sharepoint-2013

Question

I'm trying to write a CAML query to look for a specific file, by file name, in a specific document set.
This is the query I'm working on:
<Query>
<Where>
<Eq>
<FieldRef Name='FileLeafRef' />
<Value Type='File'>TestFile.txt</Value>
</Eq>
</Where>
</Query>
<QueryOptions>
<Folder>https://acme.com/sites/mysite/MyDocLib/MyDocSetName</Folder>
</QueryOptions>
As there is a file called TestFile.txt in a document set called MyDocSetName, I expect to get a result, but nothing is coming back. What am I doing wrong?

Answer 1

Sample tested script based on this demo.
<script type="text/javascript" src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script language="javascript" type="text/javascript">
$(document).ready(function() {
var scriptbase = _spPageContextInfo.webServerRelativeUrl + "/_layouts/15/";
$.getScript(scriptbase + "SP.Runtime.js", function() {
$.getScript(scriptbase + "SP.js", function() {
$.getScript(scriptbase + "SP.DocumentManagement.js", createDocumentSet);
});
});
});
var docSetFiles;
function createDocumentSet() {
//Get the client context,web and library object.
clientContext = new SP.ClientContext.get_current();
oWeb = clientContext.get_web();
var oList = oWeb.get_lists().getByTitle("DocSet");
clientContext.load(oList);
//Get the root folder of the library
oLibraryFolder = oList.get_rootFolder();
var documentSetFolder = "/DocSet/test1";
//Get the document set files using CAML query
var camlQuery = SP.CamlQuery.createAllItemsQuery();
camlQuery.set_viewXml("<View><Query><Where><Eq><FieldRef Name='FileLeafRef'/><Value Type='Text'>test2.docx</Value></Eq></Where></Query></View>");
camlQuery.set_folderServerRelativeUrl(documentSetFolder);
docSetFiles = oList.getItems(camlQuery);
//Load the client context and execute the batch
clientContext.load(docSetFiles, 'Include(File)');
clientContext.executeQueryAsync(QuerySuccess, QueryFailure);
}
function QuerySuccess() {
//Loop through the document set files and get the display name
var docSetFilesEnumerator = docSetFiles.getEnumerator();
while (docSetFilesEnumerator.moveNext()) {
var oDoc = docSetFilesEnumerator.get_current().get_file();
console.log("Document Name : " + oDoc.get_name());
}
}
function QueryFailure() {
console.log('Request failed - ' + args.get_message());
}
</script>