add tooling to freeze upstream requirements

Author: mattsb42-aws

test/freeze-upstream-requirements.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+# Minimal wrapper script for upstream requirements install and freeze.
+# We do this here rather than as tox commands because tox does not support output redirection.
+if [ -z ${1} ]; then
+    exit 1
+fi
+
+pip install -r requirements.txt
+pip install -r test/requirements.txt
+pip freeze > ${1}

tox.ini

@@ -70,6 +70,33 @@ sitepackages = False
 deps = -rtest/requirements.txt
 commands = {[testenv:base-command]commands} -m "local and not slow and not veryslow and not nope"
 
+# Collect requirements for use in upstream tests
+[testenv:freeze-upstream-requirements-base]
+sitepackages = False
+skip_install = True
+recreate = True
+deps =
+commands =
+  {toxinidir}/test/freeze-upstream-requirements.sh
+
+# Freeze for Python 2.7
+[testenv:freeze-upstream-requirements-py27]
+basepython = python2.7
+sitepackages = {[testenv:freeze-upstream-requirements-base]sitepackages}
+skip_install = {[testenv:freeze-upstream-requirements-base]skip_install}
+recreate = {[testenv:freeze-upstream-requirements-base]recreate}
+deps = {[testenv:freeze-upstream-requirements-base]deps}
+commands = {[testenv:freeze-upstream-requirements-base]commands} test/upstream-requirements-py27.txt
+
+# Freeze for Python 3.7
+[testenv:freeze-upstream-requirements-py37]
+basepython = python3.7
+sitepackages = {[testenv:freeze-upstream-requirements-base]sitepackages}
+skip_install = {[testenv:freeze-upstream-requirements-base]skip_install}
+recreate = {[testenv:freeze-upstream-requirements-base]recreate}
+deps = {[testenv:freeze-upstream-requirements-base]deps}
+commands = {[testenv:freeze-upstream-requirements-base]commands} test/upstream-requirements-py37.txt
+
 # Verify that tests can be successfully run from the source build.
 [testenv:sourcebuildcheck]
 basepython = python3