reorganize downstream tests to avoid dependency squashing (#4418)

* reorganize downstream tests

* fix run.sh syntax

* add instructions for adding more downstream tests

* rework downstream CI test guide into rst readme

* remove unnecessary example test handler

* all test handlers should "exit 1" if an unexpected argument is received

1 files changed, 6 insertions, 60 deletions

diff --git a/.travis/run.sh b/.travis/run.sh
index 572b9a4d..ca0ddac6 100755
--- a/.travis/run.sh
+++ b/.travis/run.sh
@@ -26,65 +26,11 @@ source ~/.venv/bin/activate
 if [ -n "${TOXENV}" ]; then
     tox -- --wycheproof-root=$HOME/wycheproof
 else
+    downstream_script="${TRAVIS_BUILD_DIR}/.travis/downstream.d/${DOWNSTREAM}.sh"
+    if [ ! -x $downstream_script ]; then
+        exit 1
+    fi
+    $downstream_script install
     pip install .
-    case "${DOWNSTREAM}" in
-        pyopenssl)
-            git clone --depth=1 https://github.com/pyca/pyopenssl
-            cd pyopenssl
-            pip install -e ".[test]"
-            pytest tests
-            ;;
-        twisted)
-            git clone --depth=1 https://github.com/twisted/twisted
-            cd twisted
-            pip install -e .[tls,conch,http2]
-            python -m twisted.trial src/twisted
-            ;;
-        paramiko)
-            git clone --depth=1 https://github.com/paramiko/paramiko
-            cd paramiko
-            pip install -e .
-            pip install -r dev-requirements.txt
-            inv test
-            ;;
-        aws-encryption-sdk)
-            git clone --depth=1 https://github.com/awslabs/aws-encryption-sdk-python
-            cd aws-encryption-sdk-python
-            pip install -r test/requirements.txt
-            pip install -e .
-            pytest -m local test/
-            ;;
-        dynamodb-encryption-sdk)
-            git clone --depth=1 https://github.com/awslabs/aws-dynamodb-encryption-python
-            cd aws-dynamodb-encryption-python
-            pip install -r test/requirements.txt
-            pip install -e .
-            pytest -m "local and not slow and not veryslow and not nope"
-            ;;
-        certbot)
-            git clone --depth=1 https://github.com/certbot/certbot
-            cd certbot
-            pip install pytest pytest-mock mock
-            pip install -e acme
-            pip install -e .
-            pytest certbot/tests
-            pytest acme
-            ;;
-        certbot-josepy)
-            git clone --depth=1 https://github.com/certbot/josepy
-            cd josepy
-            pip install -e ".[tests]"
-            pytest src
-            ;;
-        urllib3)
-            git clone --depth 1 https://github.com/shazow/urllib3
-            cd urllib3
-            pip install -r ./dev-requirements.txt
-            pip install -e ".[socks]"
-            pytest test
-            ;;
-        *)
-            exit 1
-            ;;
-    esac
+    $downstream_script run
 fi