it('creates the edges array if it does not exist', () => {
connection = proxy.create('connection', 'FriendsConnection');
RelayConnectionHandler.insertEdgeBefore(connection, newEdge);
expect(sinkData.connection).toEqual({
[ID_KEY]: 'connection',
[TYPENAME_KEY]: 'FriendsConnection',
edges: {
[REFS_KEY]: ['newedge'],
},
});
});
it('inserts the edge before the edge with the given cursor', () => {
RelayConnectionHandler.insertEdgeBefore(connection, newEdge, 'cursor:2');
expect(sinkData[connectionID]).toEqual({
[ID_KEY]: connectionID,
[TYPENAME_KEY]: 'FriendsConnection',
edges: {
[REFS_KEY]: [
'client:4:__ConnectionQuery_friends_connection{"orderby":["first name"]}:edges:0',
'newedge',
'client:4:__ConnectionQuery_friends_connection{"orderby":["first name"]}:edges:1',
],
},
});
});
it('prepends the edge if no cursor is supplied', () => {
RelayConnectionHandler.insertEdgeBefore(connection, newEdge);
expect(sinkData[connectionID]).toEqual({
[ID_KEY]: connectionID,
[TYPENAME_KEY]: 'FriendsConnection',
edges: {
[REFS_KEY]: [
'newedge',
'client:4:__ConnectionQuery_friends_connection{"orderby":["first name"]}:edges:0',
'client:4:__ConnectionQuery_friends_connection{"orderby":["first name"]}:edges:1',
],
},
});
});
updater = (store: RecordSourceSelectorProxy, data: ?SelectorData) => {
const parent = store.get(parentID);
if (parent) {
const payload = store.getRootField(rootField);
if (!payload) {
return;
}
const newEdge = payload.getLinkedRecord(edgeName);
for (const info of connectionInfo) {
if (newEdge) {
const connection = RelayConnectionHandler.getConnection(
parent,
info.key,
info.filters,
);
if (!connection) {
return;
}
switch (info.rangeBehavior) {
case 'append':
RelayConnectionHandler.insertEdgeAfter(connection, newEdge);
break;
case 'ignore':
// Do nothing
break;
case 'prepend':
RelayConnectionHandler.insertEdgeBefore(connection, newEdge);
break;
default:
warning(
false,
'setRelayModernMutationConfigs: RANGE_ADD range behavior ' +
`'${info.rangeBehavior}' will not work as expected in RelayModern, ` +
"supported range behaviors are 'append', 'prepend', and " +
"'ignore'",
);
break;
}
}
}
}
};