silverstripe-framework/tests/forms/DropdownFieldTest.php

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<?php
/**
* @package sapphire
* @subpackage tests
*/
class DropdownFieldTest extends SapphireTest {
function testGetSource() {
$source = array(1=>'one');
$field = new DropdownField('Field', null, $source);
$this->assertEquals(
$field->getSource(),
array(
1 => 'one'
)
);
}
function testReadonlyField() {
$dropdownField = new DropdownField('FeelingOk', 'Are you feeling ok?', array(0 => 'No', 1 => 'Yes'), '', null, '(Select one)');
$dropdownField->setValue(1);
$readonlyDropdownField = $dropdownField->performReadonlyTransformation();
preg_match('/Yes/', $dropdownField->Field(), $matches);
$this->assertEquals($matches[0], 'Yes');
}
function testEmptyStringAsBooleanConstructorArgument() {
$source = array(1=>'one');
$field = new DropdownField('Field', null, $source, null, null, true);
$this->assertEquals(
$field->getSource(),
array(
'' => '',
1 => 'one'
)
);
}
function testEmptyStringAsLiteralConstructorArgument() {
$source = array(1=>'one');
$field = new DropdownField('Field', null, $source, null, null, 'select...');
$this->assertEquals(
$field->getSource(),
array(
"" => 'select...',
1 => 'one'
)
);
}
function testHasEmptyDefault() {
$source = array(1=>'one');
$field = new DropdownField('Field', null, $source);
$field->setHasEmptyDefault(true);
$this->assertEquals(
$field->getSource(),
array(
'' => '',
1 => 'one'
)
);
}
function testEmptyDefaultStringThroughSetter() {
$source = array(1=>'one');
$field = new DropdownField('Field', null, $source);
$field->setEmptyString('select...');
$this->assertEquals(
$field->getSource(),
array(
'' => 'select...',
1 => 'one'
)
);
$this->assertTrue(
$field->getHasEmptyDefault()
);
}
function testZeroArraySourceNotOverwrittenByEmptyString() {
$source = array(0=>'zero');
$field = new DropdownField('Field', null, $source);
$field->setEmptyString('select...');
$this->assertEquals(
$field->getSource(),
array(
'' => 'select...',
0 => 'zero'
)
);
}
function testNumberOfSelectOptionsAvailable() {
/* Create a field with a blank value */
$field = $this->testDropdownField('(Any)');
/* 3 options are available */
$this->assertEquals(count($this->findOptionElements($field->Field())), 3, '3 options are available');
/* There is one selected option, since a dropdown can only possibly have one! */
$selectedOptions = $this->findSelectedOptionElements($field->Field());
$this->assertEquals(count($selectedOptions), 1, 'We only have 1 selected option, since a dropdown can only possibly have one!');
/* Create a field without a blank value */
$field = $this->testDropdownField();
/* 2 options are available */
$this->assertEquals(count($this->findOptionElements($field->Field())), 2, '2 options are available');
/* There are no selected options */
$selectedOptions = $this->findSelectedOptionElements($field->Field());
$this->assertEquals(count($selectedOptions), 0, 'There are no selected options');
}
function testIntegerZeroValueSeelctedOptionBehaviour() {
$field = $this->testDropdownField('(Any)', 0);
$selectedOptions = $this->findSelectedOptionElements($field->Field());
/* The selected option is "No" */
$this->assertEquals((string) $selectedOptions[0], 'No', 'The selected option is "No"');
}
function testBlankStringValueSelectedOptionBehaviour() {
$field = $this->testDropdownField('(Any)');
$selectedOptions = $this->findSelectedOptionElements($field->Field());
/* The selected option is "(Any)" */
$this->assertEquals((string) $selectedOptions[0], '(Any)', 'The selected option is "(Any)"');
}
function testNullValueSelectedOptionBehaviour() {
$field = $this->testDropdownField('(Any)', null);
$selectedOptions = $this->findSelectedOptionElements($field->Field());
/* The selected option is "(Any)" */
$this->assertEquals((string) $selectedOptions[0], '(Any)', 'The selected option is "(Any)"');
}
function testStringValueSelectedOptionBehaviour() {
$field = $this->testDropdownField('(Any)', '1');
$selectedOptions = $this->findSelectedOptionElements($field->Field());
/* The selected option is "Yes" */
$this->assertEquals((string) $selectedOptions[0], 'Yes', 'The selected option is "Yes"');
$field->setSource(array(
'Cats' => 'Cats and Kittens',
'Dogs' => 'Dogs and Puppies'
));
$field->setValue('Cats');
$selectedOptions = $this->findSelectedOptionElements($field->Field());
/* The selected option is "Cats and Kittens" */
$this->assertEquals((string) $selectedOptions[0], 'Cats and Kittens', 'The selected option is "Cats and Kittens"');
}
/**
* Create a test dropdown field, with the option to
* set what source and blank value it should contain
* as optional parameters.
*
* @param string|null $emptyString The text to display for the empty value
* @param string|integer $value The default value of the field
* @return DropdownField object
*/
function testDropdownField($emptyString = null, $value = '') {
/* Set up source, with 0 and 1 integers as the values */
$source = array(
0 => 'No',
1 => 'Yes'
);
return new DropdownField('Field', null, $source, $value, null, $emptyString);
}
/**
* Find all the <OPTION> elements from a
* string of HTML.
*
* @param string $html HTML to scan for elements
* @return SimpleXMLElement
*/
function findOptionElements($html) {
$parser = new CSSContentParser($html);
return $parser->getBySelector('option');
}
/**
* Find all the <OPTION> elements from a
* string of HTML that have the "selected"
* attribute.
*
* @param string $html HTML to parse for elements
* @return array of SimpleXMLElement objects
*/
function findSelectedOptionElements($html) {
$options = $this->findOptionElements($html);
/* Find any elements that have the "selected" attribute and put them into a list */
$foundSelected = array();
foreach($options as $option) {
$attributes = $option->attributes();
if($attributes) foreach($attributes as $attribute => $value) {
if($attribute == 'selected') {
$foundSelected[] = $option;
}
}
}
return $foundSelected;
}
}