1 files changed, 31 insertions, 0 deletions
diff --git a/internal/compose/mime_test.go b/internal/compose/mime_test.go
new file mode 100644
index 0000000..32fb6b2
--- /dev/null
+++ b/internal/compose/mime_test.go
@@ -0,0 +1,31 @@
+package compose
+
+import (
+	"mime"
+	"strings"
+	"testing"
+)
+
+func TestBuildMixed(t *testing.T) {
+	contentType, transfer, body, err := BuildMixed("ciao\nmondo", []Attachment{{Filename: "hello.txt", Data: []byte("hello")}})
+	if err != nil {
+		t.Fatal(err)
+	}
+	mediaType, params, err := mime.ParseMediaType(contentType)
+	if err != nil || mediaType != "multipart/mixed" || params["boundary"] == "" || transfer != "7bit" {
+		t.Fatalf("unexpected MIME metadata: %q, %q, %v", contentType, transfer, err)
+	}
+	if !strings.Contains(body, "Content-Disposition: attachment") || !strings.Contains(body, "aGVsbG8=") {
+		t.Fatalf("attachment missing: %q", body)
+	}
+}
+
+func TestBuildOpenPGPMIME(t *testing.T) {
+	contentType, _, body, err := BuildOpenPGPMIME("-----BEGIN PGP MESSAGE-----\nabc\n-----END PGP MESSAGE-----")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !strings.HasPrefix(contentType, "multipart/encrypted") || !strings.Contains(body, "Version: 1") || !strings.Contains(body, "BEGIN PGP MESSAGE") {
+		t.Fatalf("invalid OpenPGP/MIME body: %q", body)
+	}
+}