From 7babf359e0221613b872b5b204e7c523b7b84486 Mon Sep 17 00:00:00 2001
From: Eugenio Lacuesta <eugenio.lacuesta@gmail.com>
Date: Thu, 18 Jun 2020 13:52:04 -0300
Subject: [PATCH] Typing: Tox env, CI job

---
 .gitignore  |   1 +
 .travis.yml |   2 +
 setup.cfg   | 171 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 tox.ini     |   7 +++
 4 files changed, 181 insertions(+)

diff --git a/.gitignore b/.gitignore
index ff6e2ea65ed..83a2569ddf0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,6 +15,7 @@ htmlcov/
 .pytest_cache/
 .coverage.*
 .cache/
+.mypy_cache/
 
 # Windows
 Thumbs.db
diff --git a/.travis.yml b/.travis.yml
index e44f85237b6..b403ac54cea 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -15,6 +15,8 @@ matrix:
       python: 3.8
     - env: TOXENV=docs
       python: 3.7  # Keep in sync with .readthedocs.yml
+    - env: TOXENV=typing
+      python: 3.8
 
     - env: TOXENV=pypy3
     - env: TOXENV=pinned
diff --git a/setup.cfg b/setup.cfg
index 2296a1052eb..a9138c1c01e 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -3,3 +3,174 @@ doc_files = docs AUTHORS INSTALL LICENSE README.rst
 
 [bdist_wheel]
 universal=1
+
+[mypy]
+ignore_missing_imports = true
+follow_imports = skip
+
+# FIXME: remove the following sections once the issues are solved
+
+[mypy-scrapy]
+ignore_errors = True
+
+[mypy-scrapy._monkeypatches]
+ignore_errors = True
+
+[mypy-scrapy.commands]
+ignore_errors = True
+
+[mypy-scrapy.commands.bench]
+ignore_errors = True
+
+[mypy-scrapy.commands.parse]
+ignore_errors = True
+
+[mypy-scrapy.downloadermiddlewares.httpproxy]
+ignore_errors = True
+
+[mypy-scrapy.contracts]
+ignore_errors = True
+
+[mypy-scrapy.core.spidermw]
+ignore_errors = True
+
+[mypy-scrapy.interfaces]
+ignore_errors = True
+
+[mypy-scrapy.item]
+ignore_errors = True
+
+[mypy-scrapy.http.cookies]
+ignore_errors = True
+
+[mypy-scrapy.mail]
+ignore_errors = True
+
+[mypy-scrapy.pipelines.images]
+ignore_errors = True
+
+[mypy-scrapy.settings.default_settings]
+ignore_errors = True
+
+[mypy-scrapy.spidermiddlewares.referer]
+ignore_errors = True
+
+[mypy-scrapy.utils.httpobj]
+ignore_errors = True
+
+[mypy-scrapy.utils.request]
+ignore_errors = True
+
+[mypy-scrapy.utils.response]
+ignore_errors = True
+
+[mypy-scrapy.utils.spider]
+ignore_errors = True
+
+[mypy-scrapy.utils.trackref]
+ignore_errors = True
+
+[mypy-tests.mocks.dummydbm]
+ignore_errors = True
+
+[mypy-tests.spiders]
+ignore_errors = True
+
+[mypy-tests.test_cmdline_crawl_with_pipeline.test_spider.spiders.exception]
+ignore_errors = True
+
+[mypy-tests.test_cmdline_crawl_with_pipeline.test_spider.spiders.normal]
+ignore_errors = True
+
+[mypy-tests.test_command_fetch]
+ignore_errors = True
+
+[mypy-tests.test_command_parse]
+ignore_errors = True
+
+[mypy-tests.test_command_shell]
+ignore_errors = True
+
+[mypy-tests.test_command_version]
+ignore_errors = True
+
+[mypy-tests.test_contracts]
+ignore_errors = True
+
+[mypy-tests.test_crawler]
+ignore_errors = True
+
+[mypy-tests.test_downloader_handlers]
+ignore_errors = True
+
+[mypy-tests.test_engine]
+ignore_errors = True
+
+[mypy-tests.test_exporters]
+ignore_errors = True
+
+[mypy-tests.test_http_request]
+ignore_errors = True
+
+[mypy-tests.test_linkextractors]
+ignore_errors = True
+
+[mypy-tests.test_loader]
+ignore_errors = True
+
+[mypy-tests.test_pipeline_crawl]
+ignore_errors = True
+
+[mypy-tests.test_pipeline_files]
+ignore_errors = True
+
+[mypy-tests.test_pipeline_images]
+ignore_errors = True
+
+[mypy-tests.test_pipelines]
+ignore_errors = True
+
+[mypy-tests.test_request_cb_kwargs]
+ignore_errors = True
+
+[mypy-tests.test_request_left]
+ignore_errors = True
+
+[mypy-tests.test_scheduler]
+ignore_errors = True
+
+[mypy-tests.test_signals]
+ignore_errors = True
+
+[mypy-tests.test_spiderloader.test_spiders.nested.spider4]
+ignore_errors = True
+
+[mypy-tests.test_spiderloader.test_spiders.spider1]
+ignore_errors = True
+
+[mypy-tests.test_spiderloader.test_spiders.spider2]
+ignore_errors = True
+
+[mypy-tests.test_spiderloader.test_spiders.spider3]
+ignore_errors = True
+
+[mypy-tests.test_spidermiddleware_httperror]
+ignore_errors = True
+
+[mypy-tests.test_spidermiddleware_output_chain]
+ignore_errors = True
+
+[mypy-tests.test_spidermiddleware_referer]
+ignore_errors = True
+
+[mypy-tests.test_utils_reqser]
+ignore_errors = True
+
+[mypy-tests.test_utils_serialize]
+ignore_errors = True
+
+[mypy-tests.test_utils_spider]
+ignore_errors = True
+
+[mypy-tests.test_utils_url]
+ignore_errors = True
diff --git a/tox.ini b/tox.ini
index 4c790158dc6..27d21ade2f0 100644
--- a/tox.ini
+++ b/tox.ini
@@ -23,6 +23,13 @@ passenv =
 commands =
     py.test --cov=scrapy --cov-report= {posargs:--durations=10 docs scrapy tests}
 
+[testenv:typing]
+basepython = python3
+deps =
+    mypy==0.780
+commands =
+    mypy {posargs: scrapy tests}
+
 [testenv:security]
 basepython = python3
 deps =