michael@0: var tests = [], filters = [], allNames = [];
michael@0: 
michael@0: function Failure(why) {this.message = why;}
michael@0: Failure.prototype.toString = function() { return this.message; };
michael@0: 
michael@0: function indexOf(collection, elt) {
michael@0:   if (collection.indexOf) return collection.indexOf(elt);
michael@0:   for (var i = 0, e = collection.length; i < e; ++i)
michael@0:     if (collection[i] == elt) return i;
michael@0:   return -1;
michael@0: }
michael@0: 
michael@0: function test(name, run, expectedFail) {
michael@0:   // Force unique names
michael@0:   var originalName = name;
michael@0:   var i = 2; // Second function would be NAME_2
michael@0:   while (indexOf(allNames, name) !== -1){
michael@0:     name = originalName + "_" + i;
michael@0:     i++;
michael@0:   }
michael@0:   allNames.push(name);
michael@0:   // Add test
michael@0:   tests.push({name: name, func: run, expectedFail: expectedFail});
michael@0:   return name;
michael@0: }
michael@0: var namespace = "";
michael@0: function testCM(name, run, opts, expectedFail) {
michael@0:   return test(namespace + name, function() {
michael@0:     var place = document.getElementById("testground"), cm = window.cm = CodeMirror(place, opts);
michael@0:     var successful = false;
michael@0:     try {
michael@0:       run(cm);
michael@0:       successful = true;
michael@0:     } finally {
michael@0:       if (!successful || verbose) {
michael@0:         place.style.visibility = "visible";
michael@0:       } else {
michael@0:         place.removeChild(cm.getWrapperElement());
michael@0:       }
michael@0:     }
michael@0:   }, expectedFail);
michael@0: }
michael@0: 
michael@0: function runTests(callback) {
michael@0:   var totalTime = 0;
michael@0:   function step(i) {
michael@0:     for (;;) {
michael@0:       if (i === tests.length) {
michael@0:         running = false;
michael@0:         return callback("done");
michael@0:       }
michael@0:       var test = tests[i], skip = false;
michael@0:       if (filters.length) {
michael@0:         skip = true;
michael@0:         for (var j = 0; j < filters.length; j++)
michael@0:           if (test.name.match(filters[j])) skip = false;
michael@0:       }
michael@0:       if (skip) {
michael@0:         callback("skipped", test.name, message);
michael@0:         i++;
michael@0:       } else {
michael@0:         break;
michael@0:       }
michael@0:     }
michael@0:     var expFail = test.expectedFail, startTime = +new Date, threw = false;
michael@0:     try {
michael@0:       var message = test.func();
michael@0:     } catch(e) {
michael@0:       threw = true;
michael@0:       if (expFail) callback("expected", test.name);
michael@0:       else if (e instanceof Failure) callback("fail", test.name, e.message);
michael@0:       else {
michael@0:         var pos = /(?:\bat |@).*?([^\/:]+):(\d+)/.exec(e.stack);
michael@0:         if (pos) console["log"](e.stack);
michael@0:         callback("error", test.name, e.toString() + (pos ? " (" + pos[1] + ":" + pos[2] + ")" : ""));
michael@0:       }
michael@0:     }
michael@0:     if (!threw) {
michael@0:       if (expFail) callback("fail", test.name, message || "expected failure, but succeeded");
michael@0:       else callback("ok", test.name, message);
michael@0:     }
michael@0:     if (!quit) { // Run next test
michael@0:       var delay = 0;
michael@0:       totalTime += (+new Date) - startTime;
michael@0:       if (totalTime > 500){
michael@0:         totalTime = 0;
michael@0:         delay = 50;
michael@0:       }
michael@0:       setTimeout(function(){step(i + 1);}, delay);
michael@0:     } else { // Quit tests
michael@0:       running = false;
michael@0:       return null;
michael@0:     }
michael@0:   }
michael@0:   step(0);
michael@0: }
michael@0: 
michael@0: function label(str, msg) {
michael@0:   if (msg) return str + " (" + msg + ")";
michael@0:   return str;
michael@0: }
michael@0: function eq(a, b, msg) {
michael@0:   if (a != b) throw new Failure(label(a + " != " + b, msg));
michael@0: }
michael@0: function near(a, b, margin, msg) {
michael@0:   if (Math.abs(a - b) > margin)
michael@0:     throw new Failure(label(a + " is not close to " + b + " (" + margin + ")", msg));
michael@0: }
michael@0: function eqPos(a, b, msg) {
michael@0:   function str(p) { return "{line:" + p.line + ",ch:" + p.ch + "}"; }
michael@0:   if (a == b) return;
michael@0:   if (a == null) throw new Failure(label("comparing null to " + str(b), msg));
michael@0:   if (b == null) throw new Failure(label("comparing " + str(a) + " to null", msg));
michael@0:   if (a.line != b.line || a.ch != b.ch) throw new Failure(label(str(a) + " != " + str(b), msg));
michael@0: }
michael@0: function is(a, msg) {
michael@0:   if (!a) throw new Failure(label("assertion failed", msg));
michael@0: }
michael@0: 
michael@0: function countTests() {
michael@0:   if (!filters.length) return tests.length;
michael@0:   var sum = 0;
michael@0:   for (var i = 0; i < tests.length; ++i) {
michael@0:     var name = tests[i].name;
michael@0:     for (var j = 0; j < filters.length; j++) {
michael@0:       if (name.match(filters[j])) {
michael@0:         ++sum;
michael@0:         break;
michael@0:       }
michael@0:     }
michael@0:   }
michael@0:   return sum;
michael@0: }
michael@0: 
michael@0: function parseTestFilter(s) {
michael@0:   if (/_\*$/.test(s)) return new RegExp("^" + s.slice(0, s.length - 2), "i");
michael@0:   else return new RegExp(s, "i");
michael@0: }