How to use

indentFailures

function

in

Array

function compare(text, expected, mode) {

  var expectedOutput = [];
  for (var i = 0; i < expected.length; ++i) {
   var sty = expected[i].style;
   if (sty && sty.indexOf(" ")) sty = sty.split(' ').sort().join(' ');
   expectedOutput.push({style: sty, text: expected[i].text});
  }

  var observedOutput = highlight(text, mode);

  var s = "";
  var diff = highlightOutputsDifferent(expectedOutput, observedOutput);
  if (diff != null) {
   s += '<div class="mt-test mt-fail">';
   s +=   '<pre>' + esc(text) + '</pre>';
   s +=   '<div class="cm-s-default">';
   s += 'expected:';
   s +=   prettyPrintOutputTable(expectedOutput, diff);
   s += 'observed: [<a onclick="this.parentElement.className+=\' mt-state-unhide\'">display states</a>]';
   s +=   prettyPrintOutputTable(observedOutput, diff);
   s +=   '</div>';
   s += '</div>';
  }
  if (observedOutput.indentFailures) {
   for (var i = 0; i < observedOutput.indentFailures.length; i++)
    s += "<div class='mt-test mt-fail'>" + esc(observedOutput.indentFailures[i]) + "</div>";
  }
  if (s) throw new Failure(s);
 }

var indent = mode.indent(state, line.slice(ws.length));
if (indent != CodeMirror.Pass && indent != ws.length)
 (st.indentFailures || (st.indentFailures = [])).push(
  "Indentation of line " + (i + 1) + " is " + indent + " (expected " + ws.length + ")");