Fix #5044; add unit tests for img() HTML helper
diff --git a/tests/codeigniter/helpers/html_helper_test.php b/tests/codeigniter/helpers/html_helper_test.php
index d66ad89..3cf1016 100644
--- a/tests/codeigniter/helpers/html_helper_test.php
+++ b/tests/codeigniter/helpers/html_helper_test.php
@@ -40,6 +40,20 @@
 
 	// ------------------------------------------------------------------------
 
+	public function test_img()
+	{
+		$this->ci_set_config('base_url', 'http://localhost/');
+		$this->assertEquals('<img src="http://localhost/test" alt="" />', img("test"));
+		$this->assertEquals('<img src="data:foo/bar,baz" alt="" />', img("data:foo/bar,baz"));
+		$this->assertEquals('<img src="http://localhost/data://foo" alt="" />', img("data://foo"));
+		$this->assertEquals('<img src="//foo.bar/baz" alt="" />', img("//foo.bar/baz"));
+		$this->assertEquals('<img src="http://foo.bar/baz" alt="" />', img("http://foo.bar/baz"));
+		$this->assertEquals('<img src="https://foo.bar/baz" alt="" />', img("https://foo.bar/baz"));
+		$this->assertEquals('<img src="ftp://foo.bar/baz" alt="" />', img("ftp://foo.bar/baz"));
+	}
+
+	// ------------------------------------------------------------------------
+
 	public function test_Ul()
 	{
 		$expect = <<<EOH
@@ -89,4 +103,4 @@
 
 	}
 
-}
\ No newline at end of file
+}