class SearchExpressionInsertExtractTestCase

class SearchExpressionInsertExtractTestCase extends DrupalUnitTestCase {
    public static function getInfo() {
        return array(
            'name' => 'Search expression insert/extract',
            'description' => 'Tests the functions search_expression_insert() and search_expression_extract()',
            'group' => 'Search',
        );
    }
    function setUp() {
        drupal_load('module', 'search');
        parent::setUp();
    }
    
    /**
     * Tests search_expression_insert() and search_expression_extract().
     */
    function testInsertExtract() {
        $base_expression = "mykeyword";
        // Build an array of option, value, what should be in the expression, what
        // should be retrieved from expression.
        $cases = array(
            array(
                'foo',
                'bar',
                'foo:bar',
                'bar',
            ),
            // Normal case.
array(
                'foo',
                NULL,
                '',
                NULL,
            ),
            // Empty value: shouldn't insert.
array(
                'foo',
                ' ',
                'foo:',
                '',
            ),
            // Space as value: should insert but retrieve empty string.
array(
                'foo',
                '',
                'foo:',
                '',
            ),
            // Empty string as value: should insert but retrieve empty string.
array(
                'foo',
                '0',
                'foo:0',
                '0',
            ),
            // String zero as value: should insert.
array(
                'foo',
                0,
                'foo:0',
                '0',
            ),
        );
        foreach ($cases as $index => $case) {
            $after_insert = search_expression_insert($base_expression, $case[0], $case[1]);
            if (empty($case[2])) {
                $this->assertEqual($after_insert, $base_expression, "Empty insert does not change expression in case {$index}");
            }
            else {
                $this->assertEqual($after_insert, $base_expression . ' ' . $case[2], "Insert added correct expression for case {$index}");
            }
            $retrieved = search_expression_extract($after_insert, $case[0]);
            if (!isset($case[3])) {
                $this->assertFalse(isset($retrieved), "Empty retrieval results in unset value in case {$index}");
            }
            else {
                $this->assertEqual($retrieved, $case[3], "Value is retrieved for case {$index}");
            }
            $after_clear = search_expression_insert($after_insert, $case[0]);
            $this->assertEqual(trim($after_clear), $base_expression, "After clearing, base expression is restored for case {$index}");
            $cleared = search_expression_extract($after_clear, $case[0]);
            $this->assertFalse(isset($cleared), "After clearing, value could not be retrieved for case {$index}");
        }
    }

}