Update makefile for utils

.go-version

@@ -0,0 +1 @@
+1.13.7

GNUmakefile

@@ -1,8 +1,33 @@
+default: build
+
+build: fmtcheck
+	go install
+
 test: fmtcheck
 	go test ./... -v -timeout 120s
 
 testacc: fmtcheck
 	TF_ACC=1 go test ./... -v $(TESTARGS) -timeout 120s
 
+cassettes: fmtcheck
+	RECORD=true TF_ACC=1 go test $(TEST) -v $(TESTARGS) -timeout 120m
+
+vet:
+	@echo "go vet ."
+	@go vet $$(go list ./... | grep -v vendor/) ; if [ $$? -eq 1 ]; then \
+		echo ""; \
+		echo "Vet found suspicious constructs. Please check the reported constructs"; \
+		echo "and fix them if necessary before submitting the code for review."; \
+		exit 1; \
+	fi
+
+fmt:
+	gofmt -w $(GOFMT_FILES)
+
 fmtcheck:
 	@sh -c "'$(CURDIR)/scripts/gofmtcheck.sh'"
+
+errcheck:
+	@sh -c "'$(CURDIR)/scripts/errcheck.sh'"
+
+.PHONY: build test testacc fmt cassettes vet fmtcheck errcheck

scripts/errcheck.sh

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+
+# Check gofmt
+echo "==> Checking for unchecked errors..."
+
+if ! which errcheck > /dev/null; then
+    echo "==> Installing errcheck..."
+    go get -u github.com/kisielk/errcheck
+fi
+
+err_files=$(errcheck -ignoretests \
+                     -ignore 'github.com/hashicorp/terraform/helper/schema:Set' \
+                     -ignore 'bytes:.*' \
+                     -ignore 'io:Close|Write' \
+                     $(go list ./...| grep -v /vendor/))
+
+if [[ -n ${err_files} ]]; then
+    echo 'Unchecked errors found in the following places:'
+    echo "${err_files}"
+    echo "Please handle returned errors. You can check directly with \`make errcheck\`"
+    exit 1
+fi
+
+exit 0