Add release scripts for the Go client

.travis.yml

@@ -11,10 +11,11 @@ install:
 - go get -u github.com/client9/misspell/cmd/misspell
 before_script:
 - $(exit $(go fmt ./... | wc -l))
-- go vet ./...
+- if [[ ! -f 'go_test.mod' ]]; then cp go.mod go_test.mod; cp go.sum go_test.sum; fi
+- go vet -modfile=go_test.mod ./...
 - find . -type f -name "*.go" | xargs misspell -error -locale US
 - staticcheck ./...
 script:
-- go test -i -race ./...
-- go test -v -run=TestNoRace -p=1 ./...
-- if [[ "$TRAVIS_GO_VERSION" =~ 1.16 ]]; then ./scripts/cov.sh TRAVIS; else go test -race -v -p=1 ./... --failfast; fi
+- go test -modfile=go_test.mod -race ./...
+- go test -modfile=go_test.mod -v -run=TestNoRace -p=1 ./...
+- if [[ "$TRAVIS_GO_VERSION" =~ 1.16 ]]; then ./scripts/cov.sh TRAVIS; else go test -modfile=go_test.mod -race -v -p=1 ./... --failfast; fi

scripts/cov.sh

@@ -3,10 +3,10 @@
 
 rm -rf ./cov
 mkdir cov
-go test --failfast -v -race -covermode=atomic -coverprofile=./cov/nats.out
-go test --failfast -v -race -covermode=atomic -coverprofile=./cov/test.out -coverpkg=github.com/nats-io/nats.go ./test
-go test --failfast -v -race -covermode=atomic -coverprofile=./cov/builtin.out -coverpkg=github.com/nats-io/nats.go/encoders/builtin ./test -run EncBuiltin
-go test --failfast -v -race -covermode=atomic -coverprofile=./cov/protobuf.out -coverpkg=github.com/nats-io/nats.go/encoders/protobuf ./test -run EncProto
+go test -modfile=go_test.mod --failfast -v -race -covermode=atomic -coverprofile=./cov/nats.out
+go test -modfile=go_test.mod --failfast -v -race -covermode=atomic -coverprofile=./cov/test.out -coverpkg=github.com/nats-io/nats.go ./test
+go test -modfile=go_test.mod --failfast -v -race -covermode=atomic -coverprofile=./cov/builtin.out -coverpkg=github.com/nats-io/nats.go/encoders/builtin ./test -run EncBuiltin
+go test -modfile=go_test.mod --failfast -v -race -covermode=atomic -coverprofile=./cov/protobuf.out -coverpkg=github.com/nats-io/nats.go/encoders/protobuf ./test -run EncProto
 gocovmerge ./cov/*.out > acc.out
 rm -rf ./cov
 

scripts/post-release.sh

@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+tag=${1:-}
+if [[ -z "${tag}" ]]; then
+	echo "missing tag"
+	echo "usage: post-release.sh <tag>"
+	exit 1
+fi
+
+WC='\033[0;36m'
+NC='\033[0m'
+echo -e "${WC}=== Cleaning up === ${NC}"
+
+# Return master to development mode once again.
+mv go_test.mod go.mod
+mv go_test.sum go.sum
+
+go test ./... -p=1 -v
+
+echo 
+echo -e "${WC}=== Run the following commands to finish the release === ${NC}"
+echo 
+echo "  git add go.mod go.sum"
+echo "  git rm go_test.mod go_test.sum"
+echo "  git commit -s -m 'Post Release ${tag} steps'"
+echo "  git checkout master"
+echo "  git merge --no-ff 'release/${tag}'"
+echo "  git push origin master"
+echo
+echo "  # Delete release branch"
+echo "  git push origin :release/${tag}"
+echo 
+echo 
+echo 

scripts/pre-release.sh

@@ -0,0 +1,64 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+tag=${1:-}
+if [[ -z "${tag}" ]]; then
+	echo "missing tag"
+	echo "usage: pre-release.sh <tag>"
+	exit 1
+fi
+
+WC='\033[0;36m'
+NC='\033[0m'
+echo -e "${WC}=== Creating release branch === ${NC}"
+
+releaseBranch="release/${tag}"
+git checkout -b "${releaseBranch}"
+mv go.mod go_test.mod
+mv go.sum go_test.sum
+
+# Start with empty go.mod file
+go mod init
+
+# Build example with the minimal go.mod, this will leave out test dependencies.
+# -mod flag instructs to fetch dependencies as needed.
+echo -e "${WC}=== Building minimal go.mod === ${NC}"
+go build -mod=mod examples/nats-sub/main.go
+
+# Run the tests locally and confirm they pass.
+echo -e "${WC}=== Running tests === ${NC}"
+sleep 1
+
+# Use readonly to ensure that dependencies are not changed while running tests.
+go test ./... -p=1 -v -modfile=go_test.mod -mod=readonly
+
+# Confirm the different in dependencies. go_test.mod should only have test
+# dependencies.
+modDiff=$(diff go.mod go_test.mod || true)
+if [[ -z "${modDiff}" ]]; then
+	echo "go.mod and go_test.mod are the same"
+	echo "confirm that test dependencies are being left out and try again"
+	exit 1
+fi
+
+echo
+echo -e "${WC}=== diff go.mod go_test.mod === ${NC}"
+echo
+echo "${modDiff}"
+echo
+echo
+read -e -r -p "Are the test dependencies left out? [y/n] " diffOk
+if ! [[ "$diffOk" =~ ^(yes|y)$ ]]; then
+	echo "diff not ok, aborting"
+	exit 1
+fi
+
+echo 
+echo -e "${WC}=== Run the following commands to tag the release === ${NC}"
+echo 
+echo "  git add go.mod go.sum go_test.mod go_test.sum"
+echo "  git commit -s -m 'Release ${tag}'"
+echo "  git tag -m '${tag}' -a ${tag}"
+echo "  git push origin ${releaseBranch} --tags"
+echo
+echo