Move error to case switch.

Move the error closer to the happy paths, and remove a test that is
redundant.

Refs #9189

Author: markstory

src/View/Helper/FormHelper.php

@@ -1024,10 +1024,6 @@ public function input($fieldName, array $options = [])
         $options = $this->_parseOptions($fieldName, $options);
         $options += ['id' => $this->_domId($fieldName)];
 
-        if (strtolower($options['type']) === 'input') {
-                throw new RuntimeException(sprintf('Invalid type "input" used for field "%s"', $fieldName));
-        }
-
         $templater = $this->templater();
         $newTemplates = $options['templates'];
 
@@ -1140,7 +1136,7 @@ protected function _inputContainerTemplate($options)
      */
     protected function _getInput($fieldName, $options)
     {
-        switch ($options['type']) {
+        switch (strtolower($options['type'])) {
             case 'select':
                 $opts = $options['options'];
                 unset($options['options']);
@@ -1156,6 +1152,9 @@ protected function _getInput($fieldName, $options)
                 unset($options['options']);
 
                 return $this->multiCheckbox($fieldName, $opts, $options);
+            case 'input':
+                throw new RuntimeException("Invalid type 'input' used for field '$fieldName'");
+
             default:
                 return $this->{$options['type']}($fieldName, $options);
         }

tests/TestCase/View/Helper/FormHelperTest.php

@@ -3683,24 +3683,14 @@ public function testInputMagicSelectForTypeNumber()
      * Test invalid 'input' type option to input() function.
      *
      * @expectedException \RuntimeException
+     * @expectedExceptionMessage Invalid type 'input' used for field 'text'
      * @return void
      */
-    public function testInvalidInputTypeOptionLowercase()
+    public function testInvalidInputTypeOption()
     {
         $this->Form->input('text', ['type' => 'input']);
     }
 
-    /**
-     * Test invalid 'Input' type option to input() function.
-     *
-     * @expectedException \RuntimeException
-     * @return void
-     */
-    public function testInvalidInputTypeOptionUppercase()
-    {
-        $this->Form->input('text', ['type' => 'Input']);
-    }
-
     /**
      * Test that magic input() selects can easily be converted into radio types without error.
      *