Function TestDeleteAndReadReverse

query/query4_test.go:238–272

(t *testing.T)

}

func TestDeleteAndReadReverse(t *testing.T) {
	// Add new predicate with a reverse edge.
	s1 := testSchema + "\n child_pred: uid @reverse .\n"
	setSchema(s1)
	triples := `<0x666> <child_pred> <0x777>  .`
	require.NoError(t, addTriplesToCluster(triples))

	// Verify reverse edges works as expected.
	q1 := `
	{
		me(func: uid(0x777)) {
			~child_pred {
				uid
			}
		}
	}`
	js := processQueryNoErr(t, q1)
	require.JSONEq(t, `{"data": {"me": [{"~child_pred": [{"uid": "0x666"}]}]}}`, js)

	// Remove the reverse edges and verify the previous query is no longer supported.
	s2 := testSchema + "\n child_pred: uid .\n"
	setSchema(s2)
	_, err := processQuery(context.Background(), t, q1)
	require.Error(t, err)
	require.Contains(t, err.Error(), "Predicate child_pred doesn't have reverse edge")

	// Re-add reverse edges and verify that the original query works again.
	setSchema(s1)
	js = processQueryNoErr(t, q1)
	require.JSONEq(t, `{"data": {"me": [{"~child_pred": [{"uid": "0x666"}]}]}}`, js)

	// Finally, drop the predicate and restore schema.
	dropPredicate("child_pred")
	setSchema(testSchema)
}

func TestSchemaUpdateNoConflict(t *testing.T) {
	// Verify schema is as expected for the predicate with noconflict directive.