closes #373 - Casper.waitForText() RegExp support

@@ -4,6 +4,7 @@ CasperJS Changelog
 XXXX-XX-XX, v1.0.2
 ------------------
 
+- closed [#373](https://github.com/n1k0/casperjs/issues/373) - added RegExp support to `Casper.waitForText()`
 - fixed [#368](https://github.com/n1k0/casperjs/issues/368) - Remote JS error is thrown when a click target is missing after `click()`
 - merged PR [#357](https://github.com/n1k0/casperjs/pull/357) - fire the `input` event after setting input value (required to support [angular.js](http://angularjs.org/) apps)
 

@@ -1796,20 +1796,24 @@ Casper.prototype.waitForSelector = function waitForSelector(selector, then, onTi
 };
 
 /**
- * Waits until the page contains given HTML text.
+ * Waits until the page contains given HTML text or matches a given RegExp.
  *
- * @param  String    text       Text to wait for
- * @param  Function  then       The next step to perform (optional)
- * @param  Function  onTimeout  A callback function to call on timeout (optional)
- * @param  Number    timeout    The max amount of time to wait, in milliseconds (optional)
+ * @param  String|RegExp  pattern    Text or RegExp to wait for
+ * @param  Function       then       The next step to perform (optional)
+ * @param  Function       onTimeout  A callback function to call on timeout (optional)
+ * @param  Number         timeout    The max amount of time to wait, in milliseconds (optional)
  * @return Casper
  */
-Casper.prototype.waitForText = function(text, then, onTimeout, timeout) {
+Casper.prototype.waitForText = function(pattern, then, onTimeout, timeout) {
     "use strict";
     this.checkStarted();
     timeout = timeout ? timeout : this.options.waitTimeout;
     return this.waitFor(function _check() {
-        return this.getPageContent().indexOf(text) !== -1;
+        var content = this.getPageContent();
+        if (utils.isRegExp(pattern)) {
+            return pattern.test(content);
+        }
+        return content.indexOf(pattern) !== -1;
     }, then, onTimeout, timeout);
 };
 

@@ -372,6 +372,18 @@ function isObject(value) {
 exports.isObject = isObject;
 
 /**
+ * Checks if value is a RegExp
+ *
+ * @param  mixed  value
+ * @return Boolean
+ */
+function isRegExp(value) {
+    "use strict";
+    return isType(value, "regexp");
+}
+exports.isRegExp = isRegExp;
+
+/**
  * Checks if value is a javascript String
  *
  * @param  mixed  value

@@ -32,6 +32,14 @@ casper.thenOpen('tests/site/waitFor.html').waitForText('<li>four</li>', function
     this.test.fail('Casper.waitForText() can wait for text');
 });
 
+casper.thenOpen('tests/site/waitFor.html').waitForText(/four/i, function() {
+    this.test.comment('Casper.waitForText()');
+    this.test.pass('Casper.waitForText() can wait for regexp');
+}, function() {
+    this.test.comment('Casper.waitForText()');
+    this.test.fail('Casper.waitForText() can wait for regexp');
+});
+
 casper.run(function() {
-    this.test.done(3);
+    this.test.done(4);
 });