api: add JSON-RPC APIs for location streaming

New API stop_sending_locations() only available
in JSON-RPC stops location streaming
in all accounts and chats.

deltachat-rpc-client/tests/test_location.py

@@ -0,0 +1,32 @@
+def test_set_location(dc, acfactory) -> None:
+    # Try setting location without any accounts.
+    assert not dc.set_location(1.0, 2.0, 0.1)
+
+    # Create one account that does not stream,
+    # set location.
+    acfactory.new_configured_account()
+    assert not dc.set_location(3.0, 4.0, 0.1)
+
+
+def test_send_locations_to_chat(dc, acfactory):
+    alice, bob = acfactory.get_online_accounts(2)
+
+    assert not alice.is_sending_locations()
+    alice_chat_bob = alice.create_chat(bob)
+    assert not alice_chat_bob.is_sending_locations()
+
+    # Test starting and stopping location streaming in a chat.
+    alice_chat_bob.send_locations(3600)
+    assert alice.is_sending_locations()
+    assert alice_chat_bob.is_sending_locations()
+    alice_chat_bob.send_locations(0)
+    assert not alice.is_sending_locations()
+    assert not alice_chat_bob.is_sending_locations()
+
+    # Test stop_sending_locations() for all accounts and chats.
+    alice_chat_bob.send_locations(3600)
+    assert alice.is_sending_locations()
+    assert alice_chat_bob.is_sending_locations()
+    dc.stop_sending_locations()
+    assert not alice.is_sending_locations()
+    assert not alice_chat_bob.is_sending_locations()