gecko-dev/dom/xhr/tests/test_XHR.html

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  <title>Test for XMLHttpRequest</title>
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<script class="testbody" type="application/javascript">
"use strict";
SimpleTest.waitForExplicitFinish();

var gen = runTests();
function continueTest() { gen.next(); }

function* runTests() {

var path = "/tests/dom/xhr/tests/";

var passFiles = [['file_XHR_pass1.xml', 'GET', 200, 'OK', 'text/xml'],
                 ['file_XHR_pass2.txt', 'GET', 200, 'OK', 'text/plain'],
                 ['file_XHR_pass3.txt', 'GET', 200, 'OK', 'text/plain'],
                 ['data:text/xml,%3Cres%3Ehello%3C/res%3E%0A', 'GET', 200, 'OK', 'text/xml'],
                 ['data:text/plain,hello%20pass%0A', 'GET', 200, 'OK', 'text/plain'],
                 ['data:,foo', 'GET', 200, 'OK', 'text/plain;charset=US-ASCII', 'foo'],
                 ['data:text/plain;base64,Zm9v', 'GET', 200, 'OK', 'text/plain', 'foo'],
                 ['data:text/plain,foo#bar', 'GET', 200, 'OK', 'text/plain', 'foo'],
                 ['data:text/plain,foo%23bar', 'GET', 200, 'OK', 'text/plain', 'foo#bar'],
                 ];

var blob = new Blob(["foo"], { type: "text/plain" });
var blobURL = URL.createObjectURL(blob);

passFiles.push([blobURL, 'GET', 200, 'OK', 'text/plain', 'foo']);

var failFiles = [['//example.com' + path + 'file_XHR_pass1.xml', 'GET'],
                 ['ftp://localhost' + path + 'file_XHR_pass1.xml', 'GET'],
                 ['file_XHR_fail1.txt', 'GET'],
                 ];

for (i = 0; i < passFiles.length; ++i) {
  // Function to give our hacked is() a scope
  (function(oldIs) {
  function is(actual, expected, message) {
    oldIs(actual, expected, message + " for " + passFiles[i][0]);
  }
  xhr = new XMLHttpRequest();
  is(xhr.getResponseHeader("Content-Type"), null, "should be null");
  is(xhr.getAllResponseHeaders(), "", "should be empty string");
  is(xhr.responseType, "", "wrong initial responseType");
  xhr.open(passFiles[i][1], passFiles[i][0], false); 
  xhr.send(null);
  is(xhr.status, passFiles[i][2], "wrong status");
  is(xhr.statusText, passFiles[i][3], "wrong statusText");
  is(xhr.getResponseHeader("Content-Type"), passFiles[i][4], "wrong content type");
  var headers = xhr.getAllResponseHeaders();
  ok(/(?:^|\n)Content-Type:\s*([^\r\n]*)\r\n/i.test(headers) &&
     RegExp.$1 === passFiles[i][4], "wrong response headers");
  if (xhr.responseXML) {
    is((new XMLSerializer()).serializeToString(xhr.responseXML.documentElement),
       passFiles[i][5] || "<res>hello</res>", "wrong responseXML");
    is(xhr.response, passFiles[i][5] || "<res>hello</res>\n", "wrong response");
  }
  else {
    is(xhr.responseText, passFiles[i][5] || "hello pass\n", "wrong responseText");
    is(xhr.response, passFiles[i][5] || "hello pass\n", "wrong response");
  }
  })(is);
}

URL.revokeObjectURL(blobURL);

for (i = 0; i < failFiles.length; ++i) {
  xhr = new XMLHttpRequest();
  var didthrow = false;
  try {
    xhr.open(failFiles[i][1], failFiles[i][0], false); 
    xhr.send(null);
  }
  catch (e) {
    didthrow = true;
  }
  if (!didthrow) {
    is(xhr.status, 301, "wrong status");
    is(xhr.responseText, "redirect file\n", "wrong response");
  }
  else {
    ok(1, "should have thrown or given incorrect result");
  }
}

function checkResponseTextAccessThrows(xhr) {
  var didthrow = false;
  try { xhr.responseText } catch (e) { didthrow = true; }
  ok(didthrow, "should have thrown when accessing responseText");
}
function checkResponseXMLAccessThrows(xhr) {
  var didthrow = false;
  try { xhr.responseXML } catch (e) { didthrow = true; }
  ok(didthrow, "should have thrown when accessing responseXML");
}
function checkSetResponseType(xhr, type) {
  var didthrow = false;
  try { xhr.responseType = type; } catch (e) { didthrow = true; }
  is(xhr.responseType, type, "responseType should be " + type);
  ok(!didthrow, "should not have thrown when setting responseType");
}
function checkSetResponseTypeThrows(xhr, type) {
  var didthrow = false;
  try { xhr.responseType = type; } catch (e) { didthrow = true; }
  ok(didthrow, "should have thrown when setting responseType");
}
function checkOpenThrows(xhr, method, url, async) {
  var didthrow = false;
  try { xhr.open(method, url, async); } catch (e) { didthrow = true; }
  ok(didthrow, "should have thrown when open is called");
}

// test if setting responseType before calling open() works
xhr = new XMLHttpRequest();
checkSetResponseType(xhr, "");
checkSetResponseType(xhr, "text");
checkSetResponseType(xhr, "document");
checkSetResponseType(xhr, "arraybuffer");
checkSetResponseType(xhr, "blob");
checkSetResponseType(xhr, "json");
checkSetResponseType(xhr, "moz-chunked-arraybuffer");
checkOpenThrows(xhr, "GET", "file_XHR_pass2.txt", false);

// test response (sync, responseType is not changeable)
xhr = new XMLHttpRequest();
xhr.open("GET", 'file_XHR_pass2.txt', false); 
checkSetResponseTypeThrows(xhr, "");
checkSetResponseTypeThrows(xhr, "text");
checkSetResponseTypeThrows(xhr, "document");
checkSetResponseTypeThrows(xhr, "arraybuffer");
checkSetResponseTypeThrows(xhr, "blob");
checkSetResponseTypeThrows(xhr, "json");
checkSetResponseTypeThrows(xhr, "moz-chunked-arraybuffer");
xhr.send(null);
checkSetResponseTypeThrows(xhr, "document");
is(xhr.status, 200, "wrong status");
is(xhr.response, "hello pass\n", "wrong response");

// test response (responseType='document')
xhr = new XMLHttpRequest();
xhr.open("GET", 'file_XHR_pass1.xml'); 
xhr.responseType = 'document';
xhr.onloadend = continueTest;
xhr.send(null);
yield undefined;
checkSetResponseTypeThrows(xhr, "document");
is(xhr.status, 200, "wrong status");
checkResponseTextAccessThrows(xhr);
is((new XMLSerializer()).serializeToString(xhr.response.documentElement),
   "<res>hello</res>",
   "wrong response");

// test response (responseType='text')
xhr = new XMLHttpRequest();
xhr.open("GET", 'file_XHR_pass2.txt'); 
xhr.responseType = 'text';
xhr.onloadend = continueTest;
xhr.send(null);
yield undefined;
is(xhr.status, 200, "wrong status");
checkResponseXMLAccessThrows(xhr);
is(xhr.response, "hello pass\n", "wrong response");

// test response (responseType='arraybuffer')
function arraybuffer_equals_to(ab, s) {
  is(ab.byteLength, s.length, "wrong arraybuffer byteLength");

  var u8v = new Uint8Array(ab);
  is(String.fromCharCode.apply(String, u8v), s, "wrong values");
}

// with a simple text file
xhr = new XMLHttpRequest();
xhr.open("GET", 'file_XHR_pass2.txt'); 
xhr.responseType = 'arraybuffer';
xhr.onloadend = continueTest;
xhr.send(null);
yield undefined;
is(xhr.status, 200, "wrong status");
checkResponseTextAccessThrows(xhr);
checkResponseXMLAccessThrows(xhr);
var ab = xhr.response;
ok(ab != null, "should have a non-null arraybuffer");
arraybuffer_equals_to(ab, "hello pass\n");

// test reusing the same XHR (Bug 680816)
xhr.open("GET", 'file_XHR_binary1.bin');
xhr.responseType = 'arraybuffer';
xhr.onloadend = continueTest;
xhr.send(null);
yield undefined;
is(xhr.status, 200, "wrong status");
var ab2 = xhr.response;
ok(ab2 != null, "should have a non-null arraybuffer");
ok(ab2 != ab, "arraybuffer on XHR reuse should be distinct");
arraybuffer_equals_to(ab, "hello pass\n");
arraybuffer_equals_to(ab2, "\xaa\xee\0\x03\xff\xff\xff\xff\xbb\xbb\xbb\xbb");

// with a binary file
xhr = new XMLHttpRequest();
xhr.open("GET", 'file_XHR_binary1.bin'); 
xhr.responseType = 'arraybuffer';
xhr.onloadend = continueTest;
xhr.send(null);
yield undefined;
is(xhr.status, 200, "wrong status");
checkResponseTextAccessThrows(xhr);
checkResponseXMLAccessThrows(xhr);
ab = xhr.response;
ok(ab != null, "should have a non-null arraybuffer");
arraybuffer_equals_to(ab, "\xaa\xee\0\x03\xff\xff\xff\xff\xbb\xbb\xbb\xbb");
is(xhr.response, xhr.response, "returns the same ArrayBuffer");

// test response (responseType='json')
var xhr = new XMLHttpRequest();
xhr.open("POST", 'responseIdentical.sjs');
xhr.responseType = 'json';
var jsonObjStr = JSON.stringify({title: "aBook", author: "john"});
xhr.onloadend = continueTest;
xhr.send(jsonObjStr);
yield undefined;
is(xhr.status, 200, "wrong status");
checkResponseTextAccessThrows(xhr);
checkResponseXMLAccessThrows(xhr);
is(JSON.stringify(xhr.response), jsonObjStr, "correct result");
is(xhr.response, xhr.response, "returning the same object on each access");

// with invalid json
var xhr = new XMLHttpRequest();
xhr.open("POST", 'responseIdentical.sjs');
xhr.responseType = 'json';
xhr.onloadend = continueTest;
xhr.send("{");
yield undefined;
is(xhr.status, 200, "wrong status");
checkResponseTextAccessThrows(xhr);
checkResponseXMLAccessThrows(xhr);
is(xhr.response, null, "Bad JSON should result in null response.");
is(xhr.response, null, "Bad JSON should result in null response even 2nd time.");

// Test status/statusText in all readyStates
xhr = new XMLHttpRequest();
function checkXHRStatus() {
  if (xhr.readyState == xhr.UNSENT || xhr.readyState == xhr.OPENED) {
    is(xhr.status, 0, "should be 0 before getting data");
    is(xhr.statusText, "", "should be empty before getting data");
  }
  else {
    is(xhr.status, 200, "should be 200 when we have data");
    is(xhr.statusText, "OK", "should be OK when we have data");
  }
}
checkXHRStatus();
xhr.open("GET", 'file_XHR_binary1.bin'); 
checkXHRStatus();
xhr.responseType = 'arraybuffer';
xhr.send(null);
xhr.onreadystatechange = continueTest;
while (xhr.readyState != 4) {
  checkXHRStatus();
  yield undefined;
}
checkXHRStatus();

// test response (responseType='blob')
// with a simple text file
xhr = new XMLHttpRequest();
xhr.open("GET", 'file_XHR_pass2.txt'); 
xhr.responseType = 'blob';
xhr.onloadend = continueTest;
xhr.send(null);
yield undefined;
is(xhr.status, 200, "wrong status");
checkResponseTextAccessThrows(xhr);
checkResponseXMLAccessThrows(xhr);
var b = xhr.response;
ok(b, "should have a non-null blob");
ok(b instanceof Blob, "should be a Blob");
ok(!(b instanceof File), "should not be a File");
is(b.size, "hello pass\n".length, "wrong blob size");

var fr = new FileReader();
fr.onload = continueTest;
fr.readAsBinaryString(b);
yield undefined;
ok(fr.result, "hello pass\n", "wrong values");

// with a binary file
xhr = new XMLHttpRequest();
xhr.open("GET", 'file_XHR_binary1.bin', true);
xhr.send(null);
xhr.onreadystatechange = continueTest;
while(xhr.readyState != 2)
  yield undefined;

is(xhr.status, 200, "wrong status");
xhr.responseType = 'blob';

while(xhr.readyState != 4)
  yield undefined;

xhr.onreadystatechange = null;

b = xhr.response;
ok(b != null, "should have a non-null blob");
is(b.size, 12, "wrong blob size");

fr = new FileReader();
fr.readAsBinaryString(b);
xhr = null; // kill the XHR object
b = null;
SpecialPowers.gc();
fr.onload = continueTest;
yield undefined;
is(fr.result, "\xaa\xee\0\x03\xff\xff\xff\xff\xbb\xbb\xbb\xbb", "wrong values");

// with a larger binary file
xhr = new XMLHttpRequest();
xhr.open("GET", 'file_XHR_binary2.bin', true);
xhr.responseType = 'blob';
xhr.send(null);
xhr.onreadystatechange = continueTest;

while (xhr.readyState != 4)
  yield undefined;

xhr.onreadystatechange = null;

var b = xhr.response;
ok(b != null, "should have a non-null blob");
is(b.size, 65536, "wrong blob size");

fr = new FileReader();
fr.readAsArrayBuffer(b);
fr.onload = continueTest;
xhr = null; // kill the XHR object
b = null;
SpecialPowers.gc();
yield undefined;

var u8 = new Uint8Array(fr.result);
for (var i = 0; i < 65536; i++) {
  if (u8[i] !== (i & 255)) {
    break;
  }
}
is(i, 65536, "wrong value at offset " + i);

var client = new XMLHttpRequest();
client.open("GET", "file_XHR_pass1.xml", true);
client.send();
client.onreadystatechange = function() {
  if(client.readyState == 4) {
    try {
      is(client.responseXML, null, "responseXML should be null.");
      is(client.responseText, "", "responseText should be empty string.");
      is(client.response, "", "response should be empty string.");
      is(client.status, 0, "status should be 0.");
      is(client.statusText, "", "statusText should be empty string.");
      is(client.getAllResponseHeaders(), "",
         "getAllResponseHeaders() should return empty string.");
    } catch(ex) {
      ok(false, "Shouldn't throw! [" + ex + "]");
    }
  }
}
client.abort();

SimpleTest.finish();
} /* runTests */
</script>
</pre>
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