feat: do not show the address in invite QR code SVG

Addresses take space and sometimes
do not fit. We generally want
to deemphasize addresses in the UI,
especially randomized chatmail
addresses.

deltachat-rpc-client/tests/test_securejoin.py

@@ -37,6 +37,28 @@ def test_qr_setup_contact(acfactory, tmp_path) -> None:
     assert not bob_contact_alice_snapshot.is_verified
 
 
+def test_qr_setup_contact_svg(acfactory) -> None:
+    alice = acfactory.new_configured_account()
+    _, _, domain = alice.get_config("addr").rpartition("@")
+
+    _qr_code, svg = alice.get_qr_code_svg()
+
+    # Test that email address is in SVG
+    # when we have no display name.
+    # Check only the domain name, because
+    # long address may be split over multiple lines
+    # and not matched.
+    assert domain in svg
+
+    alice.set_config("displayname", "Alice")
+
+    # Test that display name is used
+    # in SVG and no address is visible.
+    _qr_code, svg = alice.get_qr_code_svg()
+    assert domain not in svg
+    assert "Alice" in svg
+
+
 @pytest.mark.parametrize("protect", [True, False])
 def test_qr_securejoin(acfactory, protect):
     alice, bob = acfactory.get_online_accounts(2)