integration tests: add basic test for cgi

buildconf/integration-tests.ini

@@ -1,4 +1,4 @@
 [uwsgi]
 inherit = base
 main_plugin =
-plugins = notfound,python,php,pypy,jvm,jwsgi,psgi
+plugins = notfound,python,php,pypy,jvm,jwsgi,psgi,cgi

t/cgi/hello.cgi

@@ -0,0 +1,6 @@
+#!/bin/sh
+
+echo "Content-Type: text/plain"
+echo
+echo "Hello world!"
+echo "PATH_INFO=${PATH_INFO}"

t/runner

@@ -187,6 +187,20 @@ class UwsgiTest(unittest.TestCase):
         with requests.get(f"http://{UWSGI_HTTP}/") as r:
             self.assertEqual(r.text, "Hello, world!")
 
+    @unittest.skipUnless(*plugins_available(["cgi"]))
+    def test_psgi_helloworld(self):
+        self.start_listen_server(
+            [
+                "--plugins",
+                "0:cgi",
+                "--cgi",
+                os.path.join(TESTS_DIR, "cgi", "hello.cgi"),
+            ]
+        )
+
+        with requests.get(f"http://{UWSGI_HTTP}/foobar/say_hello") as r:
+            self.assertEqual(r.text, "Hello world!\nPATH_INFO=/foobar/say_hello\n")
+
 
 if __name__ == "__main__":
     unittest.main()