Fix end 2 end test (#649)

* set GOPATH to the temp dir so that the cache is cleared

* cleanup

* fix unbound var

* add sudo

* remove sudo

scripts/test_e2e.sh

@@ -6,26 +6,40 @@
 set -xeuo pipefail
 
 REPO_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )/.."
+
+OGOPATH=${GOPATH:-}
+OGO111MODULE=${GO111MODULE:-}
+OGOPROXY=${GOPROXY:-}
 export GO_BINARY_PATH=${GO_BINARY_PATH:-go}
 TMPDIR=$(mktemp -d)
+export GOPATH=$TMPDIR
 GOMOD_CACHE=$TMPDIR/pkg/mod
 export PATH=${REPO_DIR}/bin:${PATH}
 
 clearGoModCache () {
+  chmod -R 0770 ${GOMOD_CACHE}
   rm -fr ${GOMOD_CACHE}
 }
 
 teardown () {
   # Cleanup after our tests
-  pkill proxy || true
+  [[ -z "${OGOPATH}" ]] && unset GOPATH || export GOPATH=$OGOPATH
+  [[ -z "${OGO111MODULE}" ]] && unset GO111MODULE || export GO111MODULE=$OGO111MODULE
+  [[ -z "${OGOPROXY}" ]] && unset GOPROXY || export GOPROXY=$OGOPROXY
+
+  clearGoModCache
+  pkill athens-proxy || true
+  rm -fr ${TMPDIR}
   popd 2> /dev/null || true
 }
 trap teardown EXIT
 
+export GO111MODULE=on
+
 # Start the proxy in the background and wait for it to be ready
 cd $REPO_DIR/cmd/proxy
-pkill proxy || true # cleanup proxy if it is running
-go build -mod=vendor && ./proxy &
+pkill athens-proxy || true # cleanup proxy if it is running
+go build -mod=vendor -o athens-proxy && ./athens-proxy &
 while [[ "$(curl -s -o /dev/null -w ''%{http_code}'' localhost:3000)" != "200" ]]; do sleep 5; done
 
 # Clone our test repo
@@ -34,15 +48,11 @@ rm -fr ${TEST_SOURCE} 2> /dev/null || true
 git clone https://github.com/athens-artifacts/happy-path.git ${TEST_SOURCE}
 pushd ${TEST_SOURCE}
 
-clearGoModCache
-
-# set modules on after running buffalo dev, not sure why
-# issue https://github.com/gomods/athens/issues/412
-export GO111MODULE=on
 # Make sure that our test repo works without the GOPROXY first
 unset GOPROXY
 $GO_BINARY_PATH run .
 
+# clear cache so that go uses the proxy
 clearGoModCache
 
 # Verify that the test works against the proxy