Adding tests for D-Link DCS930L Auth RCE module (#530)

tests/exploits/routers/dlink/test_dcs_930l_auth_rce.py

+from unittest import mock
+from routersploit.modules.exploits.routers.dlink.dcs_930l_auth_rce import Exploit
+
+
+@mock.patch("routersploit.modules.exploits.routers.dlink.dcs_930l_auth_rce.shell")
+def test_exploit_success(mocked_shell, target):
+    """ Test scenario - successful exploitation """
+
+    route_mock = target.get_route_mock("/setSystemCommand", methods=["POST"])
+    route_mock.return_value = (
+        "TEST"
+        "ConfigSystemCommand"
+        "TEST"
+    )
+
+    exploit = Exploit()
+
+    assert exploit.target == ""
+    assert exploit.port == 80
+    assert exploit.username == "admin"
+    assert exploit.password == ""
+
+    exploit.target = target.host
+    exploit.port = target.port
+
+    assert exploit.check()
+    assert exploit.run() is None