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gaia/apps/calendar/test/unit/service/helper.js

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+define(function(require, exports, module) {
+'use strict';
+
+var IcalRecurExpansion = require('service/ical_recur_expansion');
+
+function request(file, cb) {
+  var xhr = new XMLHttpRequest();
+  xhr.open('GET', '/test/unit/' + file + '?' + Date.now(), true);
+  xhr.onreadystatechange = function() {
+    if (xhr.readyState === 4) {
+      if (xhr.status !== 200) {
+        cb(new Error('file not found or other error (' + file + ')', xhr));
+      } else {
+        cb(null, xhr.responseText);
+      }
+    }
+  };
+  xhr.send(null);
+}
+
+function camelize(string) {
+  var out = string.replace(/(?:^|[-_])(\w)/g, function(_, c) {
+    return c ? c.toUpperCase() : '';
+  });
+
+  return out[0].toLowerCase() + out.slice(1);
+}
+
+const ICAL_ROOT = 'fixtures/caldav/ical/';
+
+var Handlers = {
+  /**
+   * Load and parse an ical sample
+   *
+   * @param {String} file location of ical file.
+   * @param {Function} node style callback: err, contents.
+   */
+  ical: function icalLoader(file, callback) {
+    request(ICAL_ROOT + file + '.ics', function(err, text) {
+      if (err) {
+        callback(err);
+        return;
+      }
+
+      callback(null, text);
+    });
+  }
+};
+
+function Fixtures(type) {
+  var pending = 0;
+  var self = this;
+  var handler = Handlers[type];
+
+  function next() {
+    if (!(--pending)) {
+      if (self._error) {
+        throw self._error;
+      }
+      self.onready();
+    }
+  }
+
+  this.load = function loadFixture(file) {
+    pending++;
+    handler(file, function(err, contents) {
+      if (err) {
+        self._error = err;
+      } else {
+        self[camelize(file)] = contents;
+      }
+      next();
+    });
+  };
+
+  return this;
+}
+
+var Helper = {
+  Fixtures: Fixtures,
+
+  _originalExpansionLimit: null,
+
+  resetExpansionLimit: function() {
+    if (!Helper._originalExpansionLimit) {
+      IcalRecurExpansion.forEachLimit = Helper._originalExpansionLimit;
+    }
+  },
+
+  setExpansionLimit: function(newLimit) {
+    if (!Helper._originalExpansionLimit) {
+      Helper._originalExpansionLimit = IcalRecurExpansion.forEachLimit;
+    }
+
+    IcalRecurExpansion.forEachLimit = newLimit;
+  }
+};
+
+module.exports = Helper;
+
+});