diff --git a/test/requirements-3.txt b/test/requirements-3.txt
new file mode 100644
index 0000000..479f65d
--- /dev/null
+++ b/test/requirements-3.txt
@@ -0,0 +1,138 @@
+#
+# This file is autogenerated by pip-compile
+# To update, run:
+#
+#    make test-refresh-deps (or update requirements.txt)
+#
+asn1crypto==0.24.0 \
+    --hash=sha256:2f1adbb7546ed199e3c90ef23ec95c5cf3585bac7d11fb7eb562a3fe89c64e87 \
+    --hash=sha256:9d5c20441baf0cb60a4ac34cc447c6c189024b6b4c6cd7877034f4965c464e49 \
+    # via cryptography
+cffi==1.12.3 \
+    --hash=sha256:041c81822e9f84b1d9c401182e174996f0bae9991f33725d059b771744290774 \
+    --hash=sha256:046ef9a22f5d3eed06334d01b1e836977eeef500d9b78e9ef693f9380ad0b83d \
+    --hash=sha256:066bc4c7895c91812eff46f4b1c285220947d4aa46fa0a2651ff85f2afae9c90 \
+    --hash=sha256:066c7ff148ae33040c01058662d6752fd73fbc8e64787229ea8498c7d7f4041b \
+    --hash=sha256:2444d0c61f03dcd26dbf7600cf64354376ee579acad77aef459e34efcb438c63 \
+    --hash=sha256:300832850b8f7967e278870c5d51e3819b9aad8f0a2c8dbe39ab11f119237f45 \
+    --hash=sha256:34c77afe85b6b9e967bd8154e3855e847b70ca42043db6ad17f26899a3df1b25 \
+    --hash=sha256:46de5fa00f7ac09f020729148ff632819649b3e05a007d286242c4882f7b1dc3 \
+    --hash=sha256:4aa8ee7ba27c472d429b980c51e714a24f47ca296d53f4d7868075b175866f4b \
+    --hash=sha256:4d0004eb4351e35ed950c14c11e734182591465a33e960a4ab5e8d4f04d72647 \
+    --hash=sha256:4e3d3f31a1e202b0f5a35ba3bc4eb41e2fc2b11c1eff38b362de710bcffb5016 \
+    --hash=sha256:50bec6d35e6b1aaeb17f7c4e2b9374ebf95a8975d57863546fa83e8d31bdb8c4 \
+    --hash=sha256:55cad9a6df1e2a1d62063f79d0881a414a906a6962bc160ac968cc03ed3efcfb \
+    --hash=sha256:5662ad4e4e84f1eaa8efce5da695c5d2e229c563f9d5ce5b0113f71321bcf753 \
+    --hash=sha256:59b4dc008f98fc6ee2bb4fd7fc786a8d70000d058c2bbe2698275bc53a8d3fa7 \
+    --hash=sha256:73e1ffefe05e4ccd7bcea61af76f36077b914f92b76f95ccf00b0c1b9186f3f9 \
+    --hash=sha256:a1f0fd46eba2d71ce1589f7e50a9e2ffaeb739fb2c11e8192aa2b45d5f6cc41f \
+    --hash=sha256:a2e85dc204556657661051ff4bab75a84e968669765c8a2cd425918699c3d0e8 \
+    --hash=sha256:a5457d47dfff24882a21492e5815f891c0ca35fefae8aa742c6c263dac16ef1f \
+    --hash=sha256:a8dccd61d52a8dae4a825cdbb7735da530179fea472903eb871a5513b5abbfdc \
+    --hash=sha256:ae61af521ed676cf16ae94f30fe202781a38d7178b6b4ab622e4eec8cefaff42 \
+    --hash=sha256:b012a5edb48288f77a63dba0840c92d0504aa215612da4541b7b42d849bc83a3 \
+    --hash=sha256:d2c5cfa536227f57f97c92ac30c8109688ace8fa4ac086d19d0af47d134e2909 \
+    --hash=sha256:d42b5796e20aacc9d15e66befb7a345454eef794fdb0737d1af593447c6c8f45 \
+    --hash=sha256:dee54f5d30d775f525894d67b1495625dd9322945e7fee00731952e0368ff42d \
+    --hash=sha256:e070535507bd6aa07124258171be2ee8dfc19119c28ca94c9dfb7efd23564512 \
+    --hash=sha256:e1ff2748c84d97b065cc95429814cdba39bcbd77c9c85c89344b317dc0d9cbff \
+    --hash=sha256:ed851c75d1e0e043cbf5ca9a8e1b13c4c90f3fbd863dacb01c0808e2b5204201
+click==7.0 \
+    --hash=sha256:2335065e6395b9e67ca716de5f7526736bfa6ceead690adf616d925bdc622b13 \
+    --hash=sha256:5b94b49521f6456670fdb30cd82a4eca9412788a93fa6dd6df72c94d5a8ff2d7 \
+    # via pip-tools
+cryptography==2.7 \
+    --hash=sha256:24b61e5fcb506424d3ec4e18bca995833839bf13c59fc43e530e488f28d46b8c \
+    --hash=sha256:25dd1581a183e9e7a806fe0543f485103232f940fcfc301db65e630512cce643 \
+    --hash=sha256:3452bba7c21c69f2df772762be0066c7ed5dc65df494a1d53a58b683a83e1216 \
+    --hash=sha256:41a0be220dd1ed9e998f5891948306eb8c812b512dc398e5a01846d855050799 \
+    --hash=sha256:5751d8a11b956fbfa314f6553d186b94aa70fdb03d8a4d4f1c82dcacf0cbe28a \
+    --hash=sha256:5f61c7d749048fa6e3322258b4263463bfccefecb0dd731b6561cb617a1d9bb9 \
+    --hash=sha256:72e24c521fa2106f19623a3851e9f89ddfdeb9ac63871c7643790f872a305dfc \
+    --hash=sha256:7b97ae6ef5cba2e3bb14256625423413d5ce8d1abb91d4f29b6d1a081da765f8 \
+    --hash=sha256:961e886d8a3590fd2c723cf07be14e2a91cf53c25f02435c04d39e90780e3b53 \
+    --hash=sha256:96d8473848e984184b6728e2c9d391482008646276c3ff084a1bd89e15ff53a1 \
+    --hash=sha256:ae536da50c7ad1e002c3eee101871d93abdc90d9c5f651818450a0d3af718609 \
+    --hash=sha256:b0db0cecf396033abb4a93c95d1602f268b3a68bb0a9cc06a7cff587bb9a7292 \
+    --hash=sha256:cfee9164954c186b191b91d4193989ca994703b2fff406f71cf454a2d3c7327e \
+    --hash=sha256:e6347742ac8f35ded4a46ff835c60e68c22a536a8ae5c4422966d06946b6d4c6 \
+    --hash=sha256:f27d93f0139a3c056172ebb5d4f9056e770fdf0206c2f422ff2ebbad142e09ed \
+    --hash=sha256:f57b76e46a58b63d1c6375017f4564a28f19a5ca912691fd2e4261b3414b618d
+deprecation==2.0.6 \
+    --hash=sha256:68071e5ae7cd7e9da6c7dffd750922be4825c7c3a6780d29314076009cc39c35 \
+    --hash=sha256:fecd0f05024126466ba7e5309b905f09fce7d25d67e4648f7ec5488f9e764310
+entrypoints==0.3 \
+    --hash=sha256:589f874b313739ad35be6e0cd7efde2a4e9b6fea91edcc34e58ecbb8dbe56d19 \
+    --hash=sha256:c70dd71abe5a8c85e55e12c19bd91ccfeec11a6e99044204511f9ed547d48451 \
+    # via flake8
+flake8==3.7.7 \
+    --hash=sha256:859996073f341f2670741b51ec1e67a01da142831aa1fdc6242dbf88dffbe661 \
+    --hash=sha256:a796a115208f5c03b18f332f7c11729812c8c3ded6c46319c59b53efd3819da8
+graphviz==0.11 \
+    --hash=sha256:6f261efbe92b938808ebb64048253b99f379f6300c6c776d440984e71678f642 \
+    --hash=sha256:fc6f825a2a1be9841c1c7493777c0c742514c7daf979691f0e143d7dc0cc1fa9 \
+    # via objgraph
+lark-parser==0.6.7 \
+    --hash=sha256:062800f3823a6c733ec1d181a2089a22d1f62dbe65f90a3f6b1e6de1934b05ef \
+    # via syslog-rfc5424-parser
+mccabe==0.6.1 \
+    --hash=sha256:ab8a6258860da4b6677da4bd2fe5dc2c659cff31b3ee4f7f5d64e79735b80d42 \
+    --hash=sha256:dd8d182285a0fe56bace7f45b5e7d1a6ebcbf524e8f3bd87eb0f125271b8831f \
+    # via flake8
+objgraph==3.4.1 \
+    --hash=sha256:10d50116d1a66934d143a07308a5b3b3edcc021e1457f66ff792584166cae7cd \
+    --hash=sha256:bf29512d7f8b457b53fa0722ea59f516abb8abc59b78f97f0ef81394a0c615a7
+packaging==19.0 \
+    --hash=sha256:0c98a5d0be38ed775798ece1b9727178c4469d9c3b4ada66e8e6b7849f8732af \
+    --hash=sha256:9e1cbf8c12b1f1ce0bb5344b8d7ecf66a6f8a6e91bcb0c84593ed6d3ab5c4ab3 \
+    # via deprecation
+parameterized==0.7.0 \
+    --hash=sha256:020343a281efcfe9b71b9028a91817f981202c14d72104b5a2fbe401dee25a18 \
+    --hash=sha256:d8c8837fb677ed2d5a93b9e2308ce0da3aeb58cf513120d501e0b7af14da78d5
+pexpect==4.7.0 \
+    --hash=sha256:2094eefdfcf37a1fdbfb9aa090862c1a4878e5c7e0e7e7088bdb511c558e5cd1 \
+    --hash=sha256:9e2c1fd0e6ee3a49b28f95d4b33bc389c89b20af6a1255906e90ff1262ce62eb
+pip-tools==3.8.0 \
+    --hash=sha256:1240b075af2aaf8231898a6cb0220a103a06182a239ebf4537920e5d02ad89c3 \
+    --hash=sha256:e4f33c3c77954182ec6998d661b0c2749428d3b461c0247d28ee67493a1c90ef
+psutil==5.6.3 \
+    --hash=sha256:028a1ec3c6197eadd11e7b46e8cc2f0720dc18ac6d7aabdb8e8c0d6c9704f000 \
+    --hash=sha256:503e4b20fa9d3342bcf58191bbc20a4a5ef79ca7df8972e6197cc14c5513e73d \
+    --hash=sha256:863a85c1c0a5103a12c05a35e59d336e1d665747e531256e061213e2e90f63f3 \
+    --hash=sha256:954f782608bfef9ae9f78e660e065bd8ffcfaea780f9f2c8a133bb7cb9e826d7 \
+    --hash=sha256:b6e08f965a305cd84c2d07409bc16fbef4417d67b70c53b299116c5b895e3f45 \
+    --hash=sha256:bc96d437dfbb8865fc8828cf363450001cb04056bbdcdd6fc152c436c8a74c61 \
+    --hash=sha256:cf49178021075d47c61c03c0229ac0c60d5e2830f8cab19e2d88e579b18cdb76 \
+    --hash=sha256:d5350cb66690915d60f8b233180f1e49938756fb2d501c93c44f8fb5b970cc63 \
+    --hash=sha256:eba238cf1989dfff7d483c029acb0ac4fcbfc15de295d682901f0e2497e6781a
+ptyprocess==0.6.0 \
+    --hash=sha256:923f299cc5ad920c68f2bc0bc98b75b9f838b93b599941a6b63ddbc2476394c0 \
+    --hash=sha256:d7cc528d76e76342423ca640335bd3633420dc1366f258cb31d05e865ef5ca1f \
+    # via pexpect
+pycodestyle==2.5.0 \
+    --hash=sha256:95a2219d12372f05704562a14ec30bc76b05a5b297b21a5dfe3f6fac3491ae56 \
+    --hash=sha256:e40a936c9a450ad81df37f549d676d127b1b66000a6c500caa2b085bc0ca976c
+pycparser==2.19 \
+    --hash=sha256:a988718abfad80b6b157acce7bf130a30876d27603738ac39f140993246b25b3 \
+    # via cffi
+pyflakes==2.1.1 \
+    --hash=sha256:17dbeb2e3f4d772725c777fabc446d5634d1038f234e77343108ce445ea69ce0 \
+    --hash=sha256:d976835886f8c5b31d47970ed689944a0262b5f3afa00a5a7b4dc81e5449f8a2 \
+    # via flake8
+pympler==0.7 \
+    --hash=sha256:7a11e739125a9ce8bf868ded67238a40e8a7bf979bc03005eb8126182e5e274e
+pyparsing==2.4.0 \
+    --hash=sha256:1873c03321fc118f4e9746baf201ff990ceb915f433f23b395f5580d1840cb2a \
+    --hash=sha256:9b6323ef4ab914af344ba97510e966d64ba91055d6b9afa6b30799340e89cc03 \
+    # via packaging
+scapy==2.4.0 ; python_version >= "2.7" or python_version >= "3.4" \
+    --hash=sha256:452f714f5c2eac6fd0a6146b1dbddfc24dd5f4103f3ed76227995a488cfb2b73
+six==1.12.0 \
+    --hash=sha256:3350809f0555b11f552448330d0b52d5f24c91a322ea4a15ef22629740f3761c \
+    --hash=sha256:d16a0141ec1a18405cd4ce8b4613101da75da0e9a7aec5bdd4fa804d0e0eba73
+subprocess32==3.5.4 \
+    --hash=sha256:88e37c1aac5388df41cc8a8456bb49ebffd321a3ad4d70358e3518176de3a56b \
+    --hash=sha256:eb2937c80497978d181efa1b839ec2d9622cf9600a039a79d0e108d1f9aec79d
+syslog-rfc5424-parser==0.3.1 \
+    --hash=sha256:994dbb7b138ff175dd2e2a09ae487af4875cd608de9dcec25622c9b96fc0aa78 \
+    --hash=sha256:ff11d711d88d98538e1a0f1bd1a89449d3e88bc5abed66e3924b1a500869cb53