scripts: Add tests for release scripts

.github/workflows/release.yaml

@@ -0,0 +1,24 @@
+name: Release
+on: [push, pull_request]
+jobs:
+  main:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-go@v2
+      with:
+        go-version: "1.16.15"
+    - run: |
+        git config --global user.email "github-action@etcd.io"
+        git config --global user.name "Github Action"
+        gpg --batch --gen-key <<EOF
+        %no-protection
+        Key-Type: 1
+        Key-Length: 2048
+        Subkey-Type: 1
+        Subkey-Length: 2048
+        Name-Real: Github Action
+        Name-Email: github-action@etcd.io
+        Expire-Date: 0
+        EOF
+        BRANCH=release-3.5 ./scripts/release --no-upload --no-docker-push 3.5.99

scripts/release

@@ -55,7 +55,7 @@ main() {
   RELEASE_VERSION="v${VERSION}"
   MINOR_VERSION=$(echo "${VERSION}" | cut -d. -f 1-2)
   BRANCH=${BRANCH:-"release-${MINOR_VERSION}"}
-  REPOSITORY=${REPOSITORY:-"git@github.com:etcd-io/etcd.git"}
+  REPOSITORY=${REPOSITORY:-"https://github.com/etcd-io/etcd.git"}
 
   log_warning "DRY_RUN=${DRY_RUN}"
   log_callout "RELEASE_VERSION=${RELEASE_VERSION}"
@@ -102,7 +102,7 @@ main() {
 
   # Check go version.
   local go_version current_go_version
-  go_version="go$(run_go_tool "github.com/mikefarah/yq/v3" read .travis.yml "go[0]")"
+  go_version="go$(grep go-version .github/workflows/tests.yaml | awk '{print $2}' | tr -d '"')"
   current_go_version=$(go version | awk '{ print $3 }')
   if [[ "${current_go_version}" != "${go_version}" ]]; then
     log_error "Current go version is ${current_go_version}, but etcd ${RELEASE_VERSION} requires ${go_version} (see .travis.yml)."
@@ -147,7 +147,7 @@ main() {
     fi
 
     # Push the version change if it's not already been pushed.
-    if [ "$(git rev-list --count "origin/${BRANCH}..${BRANCH}")" -gt 0 ]; then
+    if [ "$DRY_RUN" != "true" ] && [ "$(git rev-list --count "origin/${BRANCH}..${BRANCH}")" -gt 0 ]; then
       read -p "Push version bump up to ${VERSION} to '$(git remote get-url origin)' [y/N]? " -r confirm
       [[ "${confirm,,}" == "y" ]] || exit 1
       maybe_run git push
@@ -182,7 +182,7 @@ main() {
     log_warning "Skipping release build step. /release directory already exists."
   else
     log_callout "Building release..."
-    if ${DRY_RUN}; then
+    if [ "$DRY_RUN" == "true" ]; then
       log_warning "In DRY_RUN mode we clone the current release directory (as there was no push)"
       REPOSITORY=$(pwd) ./scripts/build-release.sh "${RELEASE_VERSION}"
     else
@@ -263,7 +263,11 @@ main() {
 
   # Check image versions
   for IMAGE in "quay.io/coreos/etcd:${RELEASE_VERSION}" "gcr.io/etcd-development/etcd:${RELEASE_VERSION}"; do
-    local image_version=$(dry_run docker run --rm "${IMAGE}" etcd --version | grep "etcd Version" | awk -F: '{print $2}' | tr -d '[:space:]')
+    if [ "${DRY_RUN}" == "true" ] || [ "${NO_DOCKER_PUSH}" == 1 ]; then
+      IMAGE="${IMAGE}-amd64"
+    fi
+    # shellcheck disable=SC2155
+    local image_version=$(docker run --rm "${IMAGE}" etcd --version | grep "etcd Version" | awk -F: '{print $2}' | tr -d '[:space:]')
     if [ "${image_version}" != "${VERSION}" ]; then
       log_error "Check failed: etcd --version output for ${IMAGE} is incorrect: ${image_version}"
       exit 1
@@ -272,7 +276,11 @@ main() {
 
   # Check gsutil binary versions
   local BINARY_TGZ="etcd-${RELEASE_VERSION}-$(go env GOOS)-amd64.tar.gz"
-  gsutil cp "gs://etcd/${RELEASE_VERSION}/${BINARY_TGZ}" downloads
+  if [ "${DRY_RUN}" == "true" ] || [ "${NO_UPLOAD}" == 1 ]; then
+    cp "./release/${BINARY_TGZ}" downloads
+  else
+    gsutil cp "gs://etcd/${RELEASE_VERSION}/${BINARY_TGZ}" downloads
+  fi
   tar -zx -C downloads -f "downloads/${BINARY_TGZ}"
   local binary_version=$("./downloads/etcd-${RELEASE_VERSION}-$(go env GOOS)-amd64/etcd" --version | grep "etcd Version" | awk -F: '{print $2}' | tr -d '[:space:]')
   if [ "${binary_version}" != "${VERSION}" ]; then