refactor(tests): move files from angular2/e2e_test to angular2/src/test_lib

The `e2e_test` folder in `angular2` never contained e2e tests but was
used to store utilities for writing e2e/perf tests. A better place for
them is `angular2/src/test_lib`.

Closes #855

modules/angular2/src/test_lib/e2e_util.es6

@@ -0,0 +1,26 @@
+var webdriver = require('selenium-webdriver');
+
+module.exports = {
+  verifyNoBrowserErrors: verifyNoBrowserErrors,
+  clickAll: clickAll
+};
+
+function clickAll(buttonSelectors) {
+  buttonSelectors.forEach(function(selector) {
+    $(selector).click();
+  });
+}
+
+function verifyNoBrowserErrors() {
+  // TODO(tbosch): Bug in ChromeDriver: Need to execute at least one command
+  // so that the browser logs can be read out!
+  browser.executeScript('1+1');
+  browser.manage().logs().get('browser').then(function(browserLog) {
+    var filteredLog = browserLog.filter(function(logEntry) {
+      console.log('>> ' + require('util').inspect(logEntry));
+      return logEntry.level.value > webdriver.logging.Level.WARNING.value;
+    });
+    expect(filteredLog.length).toEqual(0);
+  });
+}
+

modules/angular2/src/test_lib/perf_util.es6

@@ -0,0 +1,67 @@
+var testUtil = require('./e2e_util');
+var benchpress = require('benchpress/benchpress');
+
+module.exports = {
+  runClickBenchmark: runClickBenchmark,
+  runBenchmark: runBenchmark,
+  verifyNoBrowserErrors: testUtil.verifyNoBrowserErrors
+};
+
+function runClickBenchmark(config) {
+  var buttons = config.buttons.map(function(selector) {
+    return $(selector);
+  });
+  config.work = function() {
+    buttons.forEach(function(button) {
+      button.click();
+    });
+  }
+  return runBenchmark(config);
+}
+
+function runBenchmark(config) {
+  return getScaleFactor(browser.params.benchmark.scaling).then(function(scaleFactor) {
+    var description = {};
+    var urlParams = [];
+    config.params.forEach(function(param) {
+      var name = param.name;
+      var value = applyScaleFactor(param.value, scaleFactor, param.scale);
+      urlParams.push(name + '=' + value);
+      description[name] = value;
+    });
+    var url = encodeURI(config.url + '?' + urlParams.join('&'));
+    browser.get(url);
+    return benchpressRunner.sample({
+      id: config.id,
+      execute: config.work,
+      prepare: config.prepare,
+      bindings: [
+        benchpress.bind(benchpress.Options.SAMPLE_DESCRIPTION).toValue(description)
+      ]
+    });
+  });
+}
+
+function getScaleFactor(possibleScalings) {
+  return browser.executeScript('return navigator.userAgent').then(function(userAgent) {
+    var scaleFactor = 1;
+    possibleScalings.forEach(function(entry) {
+      if (userAgent.match(entry.userAgent)) {
+        scaleFactor = entry.value;
+      }
+    });
+    return scaleFactor;
+  });
+}
+
+function applyScaleFactor(value, scaleFactor, method) {
+  if (method === 'log2') {
+    return value + Math.log2(scaleFactor);
+  } else if (method === 'sqrt') {
+    return value * Math.sqrt(scaleFactor);
+  } else if (method === 'linear') {
+    return value * scaleFactor;
+  } else {
+    return value;
+  }
+}