add test cases for the new built-in variable

tests/nginx-tests/nginx-tests/http_raw_uri_variable.t

@@ -0,0 +1,76 @@
+#!/usr/bin/perl
+
+# (C) Maxim Dounin
+# (C) flygoast
+
+# Tests for 'raw_uri' built-in variable.
+
+###############################################################################
+
+use warnings;
+use strict;
+
+use Test::More;
+
+BEGIN { use FindBin; chdir($FindBin::Bin); }
+
+use lib 'lib';
+use Test::Nginx;
+
+###############################################################################
+
+select STDERR; $| = 1;
+select STDOUT; $| = 1;
+
+my $t = Test::Nginx->new()->has(qw/http rewrite/)->plan(6)
+	->write_file_expand('nginx.conf', <<'EOF');
+
+%%TEST_GLOBALS%%
+
+daemon         off;
+
+events {
+}
+
+http {
+    %%TEST_GLOBALS_HTTP%%
+
+    server {
+        listen       127.0.0.1:8080;
+        server_name  localhost;
+
+        location / {
+            add_header X-RAW-URI     $raw_uri;
+            return 200;
+        }
+    }
+}
+
+EOF
+
+$t->run();
+
+###############################################################################
+
+raw_uri('/rawuri', '/rawuri', 'uri');
+raw_uri('/rawuri%3F', '/rawuri%3F', 'escaped uri');
+raw_uri('/rawuri?arg=foo', '/rawuri', 'uri with arguments');
+raw_uri('/rawuri?arg=%2F', '/rawuri', 'uri with escaped arguments');
+raw_uri('/rawuri%3F?arg=foo', '/rawuri%3F', 'escaped uri with arguments');
+raw_uri('/rawuri%3F?arg=%2F', '/rawuri%3F',
+    'escaped uri with escaped arguments');
+
+###############################################################################
+
+sub raw_uri {
+	my ($url, $value, $name) = @_;
+	my $data = http_get($url);
+	if ($data !~ qr!^X-RAW-URI: (.*?)\x0d?$!ms) {
+		fail($name);
+		return;
+	}
+	my $raw_uri = $1;
+	is($raw_uri, $value, $name);
+}
+
+###############################################################################