This is the v1 version, had the v2 before.

backend/backendutil/envelope_test.go

@@ -0,0 +1,40 @@
+package backendutil
+
+import (
+	"bufio"
+	"reflect"
+	"strings"
+	"testing"
+
+	"github.com/emersion/go-imap"
+	"github.com/emersion/go-message/textproto"
+)
+
+var testEnvelope = &imap.Envelope{
+	Date:      testDate,
+	Subject:   "Your Name.",
+	From:      []*imap.Address{{PersonalName: "Mitsuha Miyamizu", MailboxName: "mitsuha.miyamizu", HostName: "example.org"}},
+	Sender:    []*imap.Address{{PersonalName: "Mitsuha Miyamizu", MailboxName: "mitsuha.miyamizu", HostName: "example.org"}},
+	ReplyTo:   []*imap.Address{{PersonalName: "Mitsuha Miyamizu", MailboxName: "mitsuha.miyamizu+replyto", HostName: "example.org"}},
+	To:        []*imap.Address{{PersonalName: "Taki Tachibana", MailboxName: "taki.tachibana", HostName: "example.org"}},
+	Cc:        []*imap.Address{},
+	Bcc:       []*imap.Address{},
+	InReplyTo: "",
+	MessageId: "42@example.org",
+}
+
+func TestFetchEnvelope(t *testing.T) {
+	hdr, err := textproto.ReadHeader(bufio.NewReader(strings.NewReader(testMailString)))
+	if err != nil {
+		t.Fatal("Expected no error while reading mail, got:", err)
+	}
+
+	env, err := FetchEnvelope(hdr)
+	if err != nil {
+		t.Fatal("Expected no error while fetching envelope, got:", err)
+	}
+
+	if !reflect.DeepEqual(env, testEnvelope) {
+		t.Errorf("Expected envelope \n%+v\n but got \n%+v", testEnvelope, env)
+	}
+}