Make Load() without args open .env by default

godotenv.go

@@ -9,6 +9,10 @@ import (
 )
 
 func Load(filenames ...string) (err error) {
+	if len(filenames) == 0 {
+		filenames = []string{".env"}
+	}
+
 	for _, filename := range filenames {
 		err = loadFile(filename)
 		if err != nil {

godotenv_test.go

@@ -30,6 +30,13 @@ func loadEnvAndCompareValues(t *testing.T, envFileName string, expectedValues ma
 	}
 }
 
+func TestLoadWithNoArgsLoadsDotEnv(t *testing.T) {
+	err := Load()
+	if err.Error() != "open .env: no such file or directory" {
+		t.Errorf("Didn't try and open .env by default")
+	}
+}
+
 func TestLoadFileNotFound(t *testing.T) {
 	err := Load("somefilethatwillneverexistever.env")
 	if err == nil {