changes for email signup

internal/domain/emailphone_test.go

@@ -0,0 +1,64 @@
+package domain
+
+import "testing"
+
+func TestEncodeDecodeEmailPhoneRoundTrip(t *testing.T) {
+	for _, email := range []string{
+		"onysd@owpengram.local",
+		"a@b.co",
+		"User.Name+Tag@Example.COM",
+		"very.long.email.address.for.testing.purposes@some-long-domain-name.example.com",
+	} {
+		t.Run(email, func(t *testing.T) {
+			phone, ok := EncodeEmailPhone(email)
+			if !ok {
+				t.Fatalf("EncodeEmailPhone(%q) ok=false", email)
+			}
+			if len(phone) > MaxEmailSignupPhoneLen {
+				t.Fatalf("encoded phone too long: %d chars", len(phone))
+			}
+			if !ValidPhone(phone) {
+				t.Fatalf("encoded phone %q fails ValidPhone", phone)
+			}
+			if !IsEmailSignupPhone(phone) {
+				t.Fatalf("IsEmailSignupPhone(%q) = false, want true", phone)
+			}
+			decoded, ok := DecodeEmailPhone(phone)
+			if !ok {
+				t.Fatalf("DecodeEmailPhone(%q) ok=false", phone)
+			}
+			want := NormalizeEmailForPhone(email)
+			if decoded != want {
+				t.Fatalf("decoded = %q, want %q", decoded, want)
+			}
+			t.Logf("%q -> %q (%d chars) -> %q", email, phone, len(phone), decoded)
+		})
+	}
+}
+
+func TestEncodeEmailPhoneCaseAndWhitespaceNormalize(t *testing.T) {
+	p1, ok1 := EncodeEmailPhone("User@Example.com")
+	p2, ok2 := EncodeEmailPhone("  user@example.com  ")
+	if !ok1 || !ok2 {
+		t.Fatalf("ok1=%v ok2=%v", ok1, ok2)
+	}
+	if p1 != p2 {
+		t.Fatalf("case/whitespace variants encoded differently: %q vs %q", p1, p2)
+	}
+}
+
+func TestEncodeEmailPhoneRejectsInvalid(t *testing.T) {
+	for _, email := range []string{"", "   ", "not-an-email", "@"} {
+		if _, ok := EncodeEmailPhone(email); ok && email != "@" {
+			t.Fatalf("EncodeEmailPhone(%q) ok=true, want false", email)
+		}
+	}
+}
+
+func TestDecodeEmailPhoneRejectsNonEmailNumbers(t *testing.T) {
+	for _, phone := range []string{"", "15550001234", "888", "88799999"} {
+		if _, ok := DecodeEmailPhone(phone); ok {
+			t.Fatalf("DecodeEmailPhone(%q) ok=true, want false", phone)
+		}
+	}
+}