chore: add update-golden-files to Makefile (#214)

Author: mafredri

.gitignore

@@ -1,2 +1,3 @@
 scripts/envbuilder-*
-.registry-cache
+.registry-cache
+**/.gen-golden

Makefile

@@ -1,6 +1,10 @@
 GOARCH := $(shell go env GOARCH)
 PWD=$(shell pwd)
 
+GO_SRC_FILES := $(shell find . -type f -name '*.go' -not -name '*_test.go')
+GO_TEST_FILES := $(shell find . -type f -not -name '*.go' -name '*_test.go')
+GOLDEN_FILES := $(shell find . -type f -name '*.golden')
+
 fmt: $(shell find . -type f -name '*.go')
 	go run mvdan.cc/[email protected] -l -w .
 
@@ -10,6 +14,13 @@ develop:
 build: scripts/envbuilder-$(GOARCH)
 	./scripts/build.sh
 
+.PHONY: update-golden-files
+update-golden-files: .gen-golden
+
+.gen-golden: $(GOLDEN_FILES) $(GO_SRC_FILES) $(GO_TEST_FILES)
+	go test . -update
+	@touch "$@"
+
 docs: options.go
 	go run ./scripts/docsgen/main.go
 

options_test.go

@@ -181,6 +181,7 @@ func runCLI() envbuilder.Options {
 	}
 
 	i := cmd.Invoke().WithOS()
+	i.Args = []string{"--help"}
 	fakeIO(i)
 	err := i.Run()
 	if err != nil {