Url: introduce global helper functions for cleanup and scheme detection

Relates to #314 & #326

Additions:
 - add global `cleanup_url()` and `get_url_scheme()` functions

Modifications:
 - replace `Url` usage in `index.php` by calls to global functions
 - fix `Url` tests not being run: PHPUnit expects a single test class per file
   - move classes to separate files

tests/Url/CleanupUrlTest.php

@@ -0,0 +1,76 @@
+<?php
+/**
+ * Unitary tests for cleanup_url()
+ */
+
+require_once 'application/Url.php';
+
+class CleanupUrlTest extends PHPUnit_Framework_TestCase
+{
+    /**
+     * Clean empty UrlThanks for building nothing
+     */
+    public function testCleanupUrlEmpty()
+    {
+        $this->assertEquals('', cleanup_url(''));
+    }
+
+    /**
+     * Clean an already cleaned Url
+     */
+    public function testCleanupUrlAlreadyClean()
+    {
+        $ref = 'http://domain.tld:3000';
+        $this->assertEquals($ref, cleanup_url($ref));
+        $ref = $ref.'/path/to/dir/';
+        $this->assertEquals($ref, cleanup_url($ref));
+    }
+
+    /**
+     * Clean Url needing cleaning
+     */
+    public function testCleanupUrlNeedClean()
+    {
+        $ref = 'http://domain.tld:3000';
+        $this->assertEquals($ref, cleanup_url($ref.'#tk.rss_all'));
+        $this->assertEquals($ref, cleanup_url($ref.'#xtor=RSS-'));
+        $this->assertEquals($ref, cleanup_url($ref.'#xtor=RSS-U3ht0tkc4b'));
+        $this->assertEquals($ref, cleanup_url($ref.'?action_object_map=junk'));
+        $this->assertEquals($ref, cleanup_url($ref.'?action_ref_map=Cr4p!'));
+        $this->assertEquals($ref, cleanup_url($ref.'?action_type_map=g4R84g3'));
+
+        $this->assertEquals($ref, cleanup_url($ref.'?fb_stuff=v41u3'));
+        $this->assertEquals($ref, cleanup_url($ref.'?fb=71m3w4573'));
+
+        $this->assertEquals($ref, cleanup_url($ref.'?utm_campaign=zomg'));
+        $this->assertEquals($ref, cleanup_url($ref.'?utm_medium=numnum'));
+        $this->assertEquals($ref, cleanup_url($ref.'?utm_source=c0d3'));
+        $this->assertEquals($ref, cleanup_url($ref.'?utm_term=1n4l'));
+
+        $this->assertEquals($ref, cleanup_url($ref.'?xtor=some-url'));
+        $this->assertEquals($ref, cleanup_url($ref.'?xtor=some-url&fb=som3th1ng'));
+        $this->assertEquals($ref, cleanup_url(
+            $ref.'?fb=stuff&utm_campaign=zomg&utm_medium=numnum&utm_source=c0d3'
+        ));
+        $this->assertEquals($ref, cleanup_url(
+            $ref.'?xtor=some-url&fb=som3th1ng#tk.rss_all'
+        ));
+
+        // ditch annoying query params and fragment, keep useful params
+        $this->assertEquals(
+            $ref.'?my=stuff&is=kept',
+            cleanup_url(
+                $ref.'?fb=zomg&my=stuff&utm_medium=numnum&is=kept#tk.rss_all'
+            )
+        );
+
+        // ditch annoying query params, keep useful params and fragment
+        $this->assertEquals(
+            $ref.'?my=stuff&is=kept#again',
+            cleanup_url(
+                $ref.'?fb=zomg&my=stuff&utm_medium=numnum&is=kept#again'
+            )
+        );
+    }
+}
+

tests/Url/GetUrlSchemeTest.php

@@ -0,0 +1,31 @@
+<?php
+/**
+ * Unitary tests for get_url_scheme()
+ */
+
+require_once 'application/Url.php';
+
+class GetUrlSchemeTest extends PHPUnit_Framework_TestCase
+{
+    /**
+     * Get empty scheme string for empty Url
+     */
+    public function testGetUrlSchemeEmpty()
+    {
+        $this->assertEquals('', get_url_scheme(''));
+    }
+
+    /**
+     * Get normal scheme of Url
+     */
+    public function testGetUrlScheme()
+    {
+        $this->assertEquals('http', get_url_scheme('http://domain.tld:3000'));
+        $this->assertEquals('https', get_url_scheme('https://domain.tld:3000'));
+        $this->assertEquals('http', get_url_scheme('domain.tld'));
+        $this->assertEquals('ssh', get_url_scheme('ssh://domain.tld'));
+        $this->assertEquals('ftp', get_url_scheme('ftp://domain.tld'));
+        $this->assertEquals('git', get_url_scheme('git://domain.tld/push?pull=clone#checkout'));
+    }
+}
+

tests/Url/UnparseUrlTest.php

@@ -0,0 +1,31 @@
+<?php
+/**
+ * Unpares Url's tests
+ */
+
+require_once 'application/Url.php';
+
+/**
+ * Unitary tests for unparse_url()
+ */
+class UnparseUrlTest extends PHPUnit_Framework_TestCase
+{
+    /**
+     * Thanks for building nothing
+     */
+    public function testUnparseEmptyArray()
+    {
+        $this->assertEquals('', unparse_url(array()));
+    }
+
+    /**
+     * Rebuild a full-featured URL
+     */
+    public function testUnparseFull()
+    {
+        $ref = 'http://username:password@hostname:9090/path'
+              .'?arg1=value1&arg2=value2#anchor';
+        $this->assertEquals($ref, unparse_url(parse_url($ref)));
+    }
+}
+

tests/Url/UrlTest.php

@@ -5,30 +5,6 @@
 
 require_once 'application/Url.php';
 
-/**
- * Unitary tests for unparse_url()
- */
-class UnparseUrlTest extends PHPUnit_Framework_TestCase
-{
-    /**
-     * Thanks for building nothing
-     */
-    public function testUnparseEmptyArray()
-    {
-        $this->assertEquals('', unparse_url(array()));
-    }
-
-    /**
-     * Rebuild a full-featured URL
-     */
-    public function testUnparseFull()
-    {
-        $ref = 'http://username:password@hostname:9090/path'
-              .'?arg1=value1&arg2=value2#anchor';
-        $this->assertEquals($ref, unparse_url(parse_url($ref)));
-    }
-}
-
 /**
  * Unitary tests for URL utilities
  */
@@ -44,7 +20,7 @@ class UrlTest extends PHPUnit_Framework_TestCase
     {
         $url = new Url(self::$baseUrl.$query.$fragment);
         $url->cleanup();
-        $this->assertEquals(self::$baseUrl, $url->__toString());
+        $this->assertEquals(self::$baseUrl, $url->toString());
     }
 
     /**
@@ -52,7 +28,8 @@ class UrlTest extends PHPUnit_Framework_TestCase
      */
     public function testEmptyConstruct()
     {
-        $this->assertEquals('', new Url(''));
+        $url = new Url('');
+        $this->assertEquals('', $url->toString());
     }
 
     /**
@@ -62,7 +39,8 @@ class UrlTest extends PHPUnit_Framework_TestCase
     {
         $ref = 'http://username:password@hostname:9090/path'
               .'?arg1=value1&arg2=value2#anchor';
-        $this->assertEquals($ref, new Url($ref));
+        $url = new Url($ref);
+        $this->assertEquals($ref, $url->toString());
     }
 
     /**