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package godotenv
import (
"bytes"
"fmt"
"os"
"reflect"
"testing"
)
var noopPresets = make(map[string]string)
func parseAndCompare(t *testing.T, rawEnvLine string, expectedKey string, expectedValue string) {
key, value, _ := parseLine(rawEnvLine, noopPresets)
if key != expectedKey || value != expectedValue {
t.Errorf("Expected '%v' to parse as '%v' => '%v', got '%v' => '%v' instead", rawEnvLine, expectedKey, expectedValue, key, value)
}
}
func loadEnvAndCompareValues(t *testing.T, loader func(files ...string) error, envFileName string, expectedValues map[string]string, presets map[string]string) {
// first up, clear the env
os.Clearenv()
for k, v := range presets {
os.Setenv(k, v)
}
err := loader(envFileName)
if err != nil {
t.Fatalf("Error loading %v", envFileName)
}
for k := range expectedValues {
envValue := os.Getenv(k)
v := expectedValues[k]
if envValue != v {
t.Errorf("Mismatch for key '%v': expected '%v' got '%v'", k, v, envValue)
}
}
}
func TestLoadWithNoArgsLoadsDotEnv(t *testing.T) {
err := Load()
pathError := err.(*os.PathError)
if pathError == nil || pathError.Op != "open" || pathError.Path != ".env" {
t.Errorf("Didn't try and open .env by default")
}
}
func TestOverloadWithNoArgsOverloadsDotEnv(t *testing.T) {
err := Overload()
pathError := err.(*os.PathError)
if pathError == nil || pathError.Op != "open" || pathError.Path != ".env" {
t.Errorf("Didn't try and open .env by default")
}
}
func TestLoadFileNotFound(t *testing.T) {
err := Load("somefilethatwillneverexistever.env")
if err == nil {
t.Error("File wasn't found but Load didn't return an error")
}
}
func TestOverloadFileNotFound(t *testing.T) {
err := Overload("somefilethatwillneverexistever.env")
if err == nil {
t.Error("File wasn't found but Overload didn't return an error")
}
}
func TestReadPlainEnv(t *testing.T) {
envFileName := "fixtures/plain.env"
expectedValues := map[string]string{
"OPTION_A": "1",
"OPTION_B": "2",
"OPTION_C": "3",
"OPTION_D": "4",
"OPTION_E": "5",
"OPTION_F": "",
"OPTION_G": "",
}
envMap, err := Read(envFileName)
if err != nil {
t.Error("Error reading file")
}
if len(envMap) != len(expectedValues) {
t.Error("Didn't get the right size map back")
}
for key, value := range expectedValues {
if envMap[key] != value {
t.Error("Read got one of the keys wrong")
}
}
}
func TestParse(t *testing.T) {
envMap, err := Parse(bytes.NewReader([]byte("ONE=1\nTWO='2'\nTHREE = \"3\"")))
expectedValues := map[string]string{
"ONE": "1",
"TWO": "2",
"THREE": "3",
}
if err != nil {
t.Fatalf("error parsing env: %v", err)
}
for key, value := range expectedValues {
if envMap[key] != value {
t.Errorf("expected %s to be %s, got %s", key, value, envMap[key])
}
}
}
func TestLoadDoesNotOverride(t *testing.T) {
envFileName := "fixtures/plain.env"
// ensure NO overload
presets := map[string]string{
"OPTION_A": "do_not_override",
"OPTION_B": "",
}
expectedValues := map[string]string{
"OPTION_A": "do_not_override",
"OPTION_B": "",
}
loadEnvAndCompareValues(t, Load, envFileName, expectedValues, presets)
}
func TestOveroadDoesOverride(t *testing.T) {
envFileName := "fixtures/plain.env"
// ensure NO overload
presets := map[string]string{
"OPTION_A": "do_not_override",
}
expectedValues := map[string]string{
"OPTION_A": "1",
}
loadEnvAndCompareValues(t, Overload, envFileName, expectedValues, presets)
}
func TestLoadPlainEnv(t *testing.T) {
envFileName := "fixtures/plain.env"
expectedValues := map[string]string{
"OPTION_A": "1",
"OPTION_B": "2",
"OPTION_C": "3",
"OPTION_D": "4",
"OPTION_E": "5",
}
loadEnvAndCompareValues(t, Load, envFileName, expectedValues, noopPresets)
}
func TestLoadExportedEnv(t *testing.T) {
envFileName := "fixtures/exported.env"
expectedValues := map[string]string{
"OPTION_A": "2",
"OPTION_B": "\n",
}
loadEnvAndCompareValues(t, Load, envFileName, expectedValues, noopPresets)
}
func TestLoadEqualsEnv(t *testing.T) {
envFileName := "fixtures/equals.env"
expectedValues := map[string]string{
"OPTION_A": "postgres://localhost:5432/database?sslmode=disable",
}
loadEnvAndCompareValues(t, Load, envFileName, expectedValues, noopPresets)
}
func TestLoadQuotedEnv(t *testing.T) {
envFileName := "fixtures/quoted.env"
expectedValues := map[string]string{
"OPTION_A": "1",
"OPTION_B": "2",
"OPTION_C": "",
"OPTION_D": "\n",
"OPTION_E": "1",
"OPTION_F": "2",
"OPTION_G": "",
"OPTION_H": "\n",
"OPTION_I": "echo 'asd'",
}
loadEnvAndCompareValues(t, Load, envFileName, expectedValues, noopPresets)
}
func TestSubstituitions(t *testing.T) {
envFileName := "fixtures/substitutions.env"
expectedValues := map[string]string{
"OPTION_A": "1",
"OPTION_B": "1",
"OPTION_C": "1",
"OPTION_D": "11",
"OPTION_E": "",
}
loadEnvAndCompareValues(t, Load, envFileName, expectedValues, noopPresets)
}
func TestActualEnvVarsAreLeftAlone(t *testing.T) {
os.Clearenv()
os.Setenv("OPTION_A", "actualenv")
_ = Load("fixtures/plain.env")
if os.Getenv("OPTION_A") != "actualenv" {
t.Error("An ENV var set earlier was overwritten")
}
}
func TestParsing(t *testing.T) {
// unquoted values
parseAndCompare(t, "FOO=bar", "FOO", "bar")
// parses values with spaces around equal sign
parseAndCompare(t, "FOO =bar", "FOO", "bar")
parseAndCompare(t, "FOO= bar", "FOO", "bar")
// parses double quoted values
parseAndCompare(t, `FOO="bar"`, "FOO", "bar")
// parses single quoted values
parseAndCompare(t, "FOO='bar'", "FOO", "bar")
// parses escaped double quotes
parseAndCompare(t, `FOO="escaped\"bar"`, "FOO", `escaped"bar`)
// parses single quotes inside double quotes
parseAndCompare(t, `FOO="'d'"`, "FOO", `'d'`)
// parses yaml style options
parseAndCompare(t, "OPTION_A: 1", "OPTION_A", "1")
//parses yaml values with equal signs
parseAndCompare(t, "OPTION_A: Foo=bar", "OPTION_A", "Foo=bar")
// parses non-yaml options with colons
parseAndCompare(t, "OPTION_A=1:B", "OPTION_A", "1:B")
// parses export keyword
parseAndCompare(t, "export OPTION_A=2", "OPTION_A", "2")
parseAndCompare(t, `export OPTION_B='\n'`, "OPTION_B", "\n")
// it 'expands newlines in quoted strings' do
// expect(env('FOO="bar\nbaz"')).to eql('FOO' => "bar\nbaz")
parseAndCompare(t, `FOO="bar\nbaz"`, "FOO", "bar\nbaz")
// it 'parses varibales with "." in the name' do
// expect(env('FOO.BAR=foobar')).to eql('FOO.BAR' => 'foobar')
parseAndCompare(t, "FOO.BAR=foobar", "FOO.BAR", "foobar")
// it 'parses varibales with several "=" in the value' do
// expect(env('FOO=foobar=')).to eql('FOO' => 'foobar=')
parseAndCompare(t, "FOO=foobar=", "FOO", "foobar=")
// it 'strips unquoted values' do
// expect(env('foo=bar ')).to eql('foo' => 'bar') # not 'bar '
parseAndCompare(t, "FOO=bar ", "FOO", "bar")
// it 'ignores inline comments' do
// expect(env("foo=bar # this is foo")).to eql('foo' => 'bar')
parseAndCompare(t, "FOO=bar # this is foo", "FOO", "bar")
// it 'allows # in quoted value' do
// expect(env('foo="bar#baz" # comment')).to eql('foo' => 'bar#baz')
parseAndCompare(t, `FOO="bar#baz" # comment`, "FOO", "bar#baz")
parseAndCompare(t, "FOO='bar#baz' # comment", "FOO", "bar#baz")
parseAndCompare(t, `FOO="bar#baz#bang" # comment`, "FOO", "bar#baz#bang")
// it 'parses # in quoted values' do
// expect(env('foo="ba#r"')).to eql('foo' => 'ba#r')
// expect(env("foo='ba#r'")).to eql('foo' => 'ba#r')
parseAndCompare(t, `FOO="ba#r"`, "FOO", "ba#r")
parseAndCompare(t, "FOO='ba#r'", "FOO", "ba#r")
//newlines and backslashes should be escaped
parseAndCompare(t, `FOO="bar\n\ b\az"`, "FOO", "bar\n baz")
parseAndCompare(t, `FOO="bar\\\n\ b\az"`, "FOO", "bar\\\n baz")
parseAndCompare(t, `FOO="bar\\r\ b\az"`, "FOO", "bar\\r baz")
parseAndCompare(t, `="value"`, "", "value")
parseAndCompare(t, `KEY="`, "KEY", "\"")
parseAndCompare(t, `KEY="value`, "KEY", "\"value")
// it 'throws an error if line format is incorrect' do
// expect{env('lol$wut')}.to raise_error(Dotenv::FormatError)
badlyFormattedLine := "lol$wut"
_, _, err := parseLine(badlyFormattedLine, noopPresets)
if err == nil {
t.Errorf("Expected \"%v\" to return error, but it didn't", badlyFormattedLine)
}
}
func TestLinesToIgnore(t *testing.T) {
// it 'ignores empty lines' do
// expect(env("\n \t \nfoo=bar\n \nfizz=buzz")).to eql('foo' => 'bar', 'fizz' => 'buzz')
if !isIgnoredLine("\n") {
t.Error("Line with nothing but line break wasn't ignored")
}
if !isIgnoredLine("\t\t ") {
t.Error("Line full of whitespace wasn't ignored")
}
// it 'ignores comment lines' do
// expect(env("\n\n\n # HERE GOES FOO \nfoo=bar")).to eql('foo' => 'bar')
if !isIgnoredLine("# comment") {
t.Error("Comment wasn't ignored")
}
if !isIgnoredLine("\t#comment") {
t.Error("Indented comment wasn't ignored")
}
// make sure we're not getting false positives
if isIgnoredLine(`export OPTION_B='\n'`) {
t.Error("ignoring a perfectly valid line to parse")
}
}
func TestErrorReadDirectory(t *testing.T) {
envFileName := "fixtures/"
envMap, err := Read(envFileName)
if err == nil {
t.Errorf("Expected error, got %v", envMap)
}
}
func TestErrorParsing(t *testing.T) {
envFileName := "fixtures/invalid1.env"
envMap, err := Read(envFileName)
if err == nil {
t.Errorf("Expected error, got %v", envMap)
}
}
func TestWrite(t *testing.T) {
writeAndCompare := func(env string, expected string) {
envMap, _ := Unmarshal(env)
actual, _ := Marshal(envMap)
if expected != actual {
t.Errorf("Expected '%v' (%v) to write as '%v', got '%v' instead.", env, envMap, expected, actual)
}
}
//just test some single lines to show the general idea
//TestRoundtrip makes most of the good assertions
//values are always double-quoted
writeAndCompare(`key=value`, `key="value"`)
//double-quotes are escaped
writeAndCompare(`key=va"lu"e`, `key="va\"lu\"e"`)
//but single quotes are left alone
writeAndCompare(`key=va'lu'e`, `key="va'lu'e"`)
// newlines, backslashes, and some other special chars are escaped
writeAndCompare(`foo="\n\r\\r!"`, `foo="\n\r\\r\!"`)
// lines should be sorted
writeAndCompare("foo=bar\nbaz=buzz", "baz=\"buzz\"\nfoo=\"bar\"")
}
func TestRoundtrip(t *testing.T) {
fixtures := []string{"equals.env", "exported.env", "plain.env", "quoted.env"}
for _, fixture := range fixtures {
fixtureFilename := fmt.Sprintf("fixtures/%s", fixture)
env, err := readFile(fixtureFilename)
if err != nil {
t.Errorf("Expected '%s' to read without error (%v)", fixtureFilename, err)
}
rep, err := Marshal(env)
if err != nil {
t.Errorf("Expected '%s' to Marshal (%v)", fixtureFilename, err)
}
roundtripped, err := Unmarshal(rep)
if err != nil {
t.Errorf("Expected '%s' to Mashal and Unmarshal (%v)", fixtureFilename, err)
}
if !reflect.DeepEqual(env, roundtripped) {
t.Errorf("Expected '%s' to roundtrip as '%v', got '%v' instead", fixtureFilename, env, roundtripped)
}
}
}
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