package gosimpleconf

import (
	"flag"
	"strings"
	"testing"
)

func TestFlagOverrides(t *testing.T) {
	var err error
	configFileStr := `
foo=bar
asdf = 1234
foo.wat =stuff
immaempty=
`
	configFile := strings.NewReader(configFileStr)

	expectedMap := make(ConfigMap)
	expectedMap["foo"] = "bar"
	expectedMap["asdf"] = "1234"
	// expect to override the 'foo.wat' value with a cli flag
	expectedMap["foo.wat"] = "iwasoverridden"
	expectedMap["immaempty"] = ""

	configMap, err := parseFile(configFile)
	if err != nil {
		t.Errorf("failed while parsing the file")
	}

	flagMap := SetupFlagOverrides(configMap)

	err = flag.Set("foo.wat", "iwasoverridden")
	if err != nil {
		t.Errorf("failed to set cli flag override")
	}

	configMap = ParseFlags(configMap, flagMap)

	validateMap(t, configMap, expectedMap)
}