synchronize tests for static and non-static API

Synchronizing the classes ensures that no tests are lost when the legacy
API is removed in symfony#16020 for Symfony 3.0, thus mitigating the risk of
future regressions.

Author: xabbuh

src/Symfony/Component/CssSelector/Tests/CssSelectorConverterTest.php

@@ -33,4 +33,46 @@ public function testCssToXPathXml()
 
         $this->assertEquals('descendant-or-self::H1', $converter->toXPath('H1'));
     }
+
+    public function testParseExceptions()
+    {
+        $converter = new CssSelectorConverter();
+
+        try {
+            $converter->toXPath('h1:');
+            $this->fail('->parse() throws an Exception if the css selector is not valid');
+        } catch (\Exception $e) {
+            $this->assertInstanceOf('\Symfony\Component\CssSelector\Exception\ParseException', $e, '->parse() throws an Exception if the css selector is not valid');
+            $this->assertEquals('Expected identifier, but <eof at 3> found.', $e->getMessage(), '->parse() throws an Exception if the css selector is not valid');
+        }
+    }
+
+    /** @dataProvider getCssToXPathWithoutPrefixTestData */
+    public function testCssToXPathWithoutPrefix($css, $xpath)
+    {
+        $converter = new CssSelectorConverter();
+
+        $this->assertEquals($xpath, $converter->toXPath($css, ''), '->parse() parses an input string and returns a node');
+    }
+
+    public function getCssToXPathWithoutPrefixTestData()
+    {
+        return array(
+            array('h1', 'h1'),
+            array('foo|h1', 'foo:h1'),
+            array('h1, h2, h3', 'h1 | h2 | h3'),
+            array('h1:nth-child(3n+1)', "*/*[name() = 'h1' and (position() - 1 >= 0 and (position() - 1) mod 3 = 0)]"),
+            array('h1 > p', 'h1/p'),
+            array('h1#foo', "h1[@id = 'foo']"),
+            array('h1.foo', "h1[@class and contains(concat(' ', normalize-space(@class), ' '), ' foo ')]"),
+            array('h1[class*="foo bar"]', "h1[@class and contains(@class, 'foo bar')]"),
+            array('h1[foo|class*="foo bar"]', "h1[@foo:class and contains(@foo:class, 'foo bar')]"),
+            array('h1[class]', 'h1[@class]'),
+            array('h1 .foo', "h1/descendant-or-self::*/*[@class and contains(concat(' ', normalize-space(@class), ' '), ' foo ')]"),
+            array('h1 #foo', "h1/descendant-or-self::*/*[@id = 'foo']"),
+            array('h1 [class*=foo]', "h1/descendant-or-self::*/*[@class and contains(@class, 'foo')]"),
+            array('div>.foo', "div/*[@class and contains(concat(' ', normalize-space(@class), ' '), ' foo ')]"),
+            array('div > .foo', "div/*[@class and contains(concat(' ', normalize-space(@class), ' '), ' foo ')]"),
+        );
+    }
 }