refs #259 - things were harder than initially expected

-Subproject commit 4826e2bb9a2ecbaf0511b6aec0fd3b68d566e23b
+Subproject commit 3b87b13e5849f5c8d7555c9a5fc6712eda5aa7a8

@@ -408,15 +408,37 @@
             return nodes;
         };
 
+        /**
+         * Retrieves the value of a form field.
+         *
+         * @param  String  inputName  The for input name attr value
+         * @return Mixed
+         */
         this.getFieldValue = function getFieldValue(inputName) {
-            var inputs = this.findAll('[name="' + inputName + '"]');
+            var inputs = this.findAll('[name="' + inputName + '"]'), type;
             switch (inputs.length) {
                 case 0:
                     return null;
                 case 1:
-                    return inputs[0].value;
+                    //this.log(inputs[0].nodeName.toLowerCase(), "error");
+                    var input = inputs[0];
+                    try {
+                        type = input.getAttribute('type').toLowerCase();
+                    } catch (e) {
+                        type = 'other';
+                    }
+                    if (['checkbox', 'radio'].indexOf(type) === -1) {
+                        return input.value;
+                    }
+                    // single checkbox or… radio button (weird, I know)
+                    if (input.hasAttribute('value')) {
+                        return input.checked ? input.getAttribute('value') : undefined;
+                    } else {
+                        return input.checked;
+                    }
+                    break;
                 default:
-                    var type = inputs[0].getAttribute('type').toLowerCase();
+                    type = inputs[0].getAttribute('type').toLowerCase();
                     if (type === 'radio') {
                         var value;
                         [].forEach.call(inputs, function(radio) {

@@ -97,11 +97,12 @@ casper.then(function() {
 
 casper.thenOpen('tests/site/form.html', function() {
     t.comment('Tester.assertField()');
+    t.comment('1. Fill inputs');
     var fpath = phantom.libraryPath + '/README.md';
     this.fill('form[action="result.html"]', {
         'email':       'chuck@norris.com',
         'content':     'Am watching thou',
-        'check':       'on',
+        'check':       true,
         'choice':      'no',
         'topic':       'bar',
         'file':        fpath,
@@ -109,13 +110,33 @@ casper.thenOpen('tests/site/form.html', function() {
     });
     t.assertField('email', 'chuck@norris.com', 'Tester.assertField() works as expected with inputs');
     t.assertField('content', 'Am watching thou', 'Tester.assertField() works as expected with textarea');
-    t.assertField('check', 'on', 'Tester.assertField() works as expected with checkboxes');
+    t.assertField('check', true, 'Tester.assertField() works as expected with checkboxes');
     t.assertField('choice', 'no', 'Tester.assertField() works as expected with radios');
     t.assertField('topic', 'bar', 'Tester.assertField() works as expected with selects');
     t.assertField('file', 'C:\\fakepath\\README.md', 'Tester.assertField() works as expected with file inputs');
     t.assertField('checklist[]', ['1', '3'], 'Tester.assertField() works as expected with check lists');
 });
 
+casper.reload(function() {
+    t.comment('2. Unfill inputs');
+    this.fill('form[action="result.html"]', {
+        'email':       '',
+        'content':     '',
+        'check':       false,
+        'choice':      '',
+        'topic':       '',
+        'file':        '',
+        'checklist[]': []
+    });
+    t.assertField('email', '', 'Tester.assertField() works as expected with inputs');
+    t.assertField('content', '', 'Tester.assertField() works as expected with textarea');
+    t.assertField('check', false, 'Tester.assertField() works as expected with checkboxes');
+    t.assertField('choice', null, 'Tester.assertField() works as expected with radios');
+    t.assertField('topic', 'foo', 'Tester.assertField() works as expected with selects');
+    t.assertField('file', '', 'Tester.assertField() works as expected with file inputs');
+    t.assertField('checklist[]', [], 'Tester.assertField() works as expected with check lists');
+});
+
 casper.then(function() {
     t.comment('Tester.getFailures()');
     t.assertEquals(typeof t.getFailures().length, "number", "Tester.getFailures() works as expected");