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/*
* Copyright 2015 Manish R Jain <manishrjain@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package query
import (
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"fmt"
"io/ioutil"
"os"
"testing"
"time"
"github.com/dgraph-io/dgraph/commit"
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"github.com/dgraph-io/dgraph/gql"
"github.com/dgraph-io/dgraph/posting"
"github.com/dgraph-io/dgraph/store"
"github.com/dgraph-io/dgraph/task"
"github.com/dgraph-io/dgraph/x"
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"github.com/google/flatbuffers/go"
)
func setErr(err *error, nerr error) {
if err != nil {
return
}
*err = nerr
}
func addEdge(t *testing.T, edge x.DirectedEdge, l *posting.List) {
if err := l.AddMutation(edge, posting.Set); err != nil {
t.Error(err)
}
}
func checkName(t *testing.T, r *task.Result, idx int, expected string) {
var tv task.Value
if ok := r.Values(&tv, idx); !ok {
t.Error("Unable to retrieve value")
}
var iname interface{}
if err := posting.ParseValue(&iname, tv.ValBytes()); err != nil {
if name != expected {
t.Errorf("Expected: %v. Got: %v", expected, name)
}
}
func checkSingleValue(t *testing.T, child *SubGraph,
attr string, value string) {
if child.Attr != attr || len(child.result) == 0 {
t.Error("Expected attr name with some result")
}
uo := flatbuffers.GetUOffsetT(child.result)
r := new(task.Result)
r.Init(child.result, uo)
if r.ValuesLength() != 1 {
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t.Errorf("Expected value length 1. Got: %v", r.ValuesLength())
}
if r.UidmatrixLength() != 1 {
t.Errorf("Expected uidmatrix length 1. Got: %v", r.UidmatrixLength())
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var ul task.UidList
if ok := r.Uidmatrix(&ul, 0); !ok {
t.Errorf("While parsing uidlist")
}
if ul.UidsLength() != 0 {
t.Error("Expected uids length 0. Got: %v", ul.UidsLength())
}
checkName(t, r, 0, value)
}
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func TestNewGraph(t *testing.T) {
var ex uint64
ex = 101
dir, err := ioutil.TempDir("", "storetest_")
if err != nil {
t.Error(err)
return
}
ps := new(store.Store)
ps.Init(dir)
sg, err := newGraph(ex, "", ps)
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if err != nil {
t.Error(err)
}
uo := flatbuffers.GetUOffsetT(sg.result)
r := new(task.Result)
r.Init(sg.result, uo)
if r.UidmatrixLength() != 1 {
t.Errorf("Expected length 1. Got: %v", r.UidmatrixLength())
}
var ul task.UidList
if ok := r.Uidmatrix(&ul, 0); !ok {
t.Errorf("Unable to parse uidlist at index 0")
}
if ul.UidsLength() != 1 {
t.Errorf("Expected length 1. Got: %v", ul.UidsLength())
}
if ul.Uids(0) != ex {
t.Errorf("Expected uid: %v. Got: %v", ex, ul.Uids(0))
}
}
func populateGraph(t *testing.T) (string, *store.Store) {
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// logrus.SetLevel(logrus.DebugLevel)
dir, err := ioutil.TempDir("", "storetest_")
if err != nil {
t.Error(err)
ps := new(store.Store)
clog := commit.NewLogger(dir, "mutations", 50<<20)
clog.Init()
// So, user we're interested in has uid: 1.
// She has 4 friends: 23, 24, 25, 31, and 101
ValueId: 23,
Source: "testing",
Timestamp: time.Now(),
}
addEdge(t, edge, posting.GetOrCreate(posting.Key(1, "friend"), ps))
addEdge(t, edge, posting.GetOrCreate(posting.Key(1, "friend"), ps))
addEdge(t, edge, posting.GetOrCreate(posting.Key(1, "friend"), ps))
addEdge(t, edge, posting.GetOrCreate(posting.Key(1, "friend"), ps))
addEdge(t, edge, posting.GetOrCreate(posting.Key(1, "friend"), ps))
// Now let's add a few properties for the main user.
addEdge(t, edge, posting.GetOrCreate(posting.Key(1, "name"), ps))
addEdge(t, edge, posting.GetOrCreate(posting.Key(1, "gender"), ps))
addEdge(t, edge, posting.GetOrCreate(posting.Key(1, "status"), ps))
// Now let's add a name for each of the friends, except 101.
addEdge(t, edge, posting.GetOrCreate(posting.Key(23, "name"), ps))
addEdge(t, edge, posting.GetOrCreate(posting.Key(24, "name"), ps))
addEdge(t, edge, posting.GetOrCreate(posting.Key(25, "name"), ps))
addEdge(t, edge, posting.GetOrCreate(posting.Key(31, "name"), ps))
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defer os.RemoveAll(dir)
// Alright. Now we have everything set up. Let's create the query.
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query := `
{
me(_uid_: 0x01) {
friend {
name
}
name
gender
status
}
}
`
gq, err := gql.Parse(query)
if err != nil {
t.Error(err)
}
sg, err := ToSubGraph(gq, ps)
if err != nil {
t.Error(err)
}
ch := make(chan error)
err = <-ch
if err != nil {
t.Error(err)
}
if len(sg.Children) != 4 {
t.Errorf("Expected len 4. Got: %v", len(sg.Children))
}
child := sg.Children[0]
if child.Attr != "friend" {
t.Errorf("Expected attr friend. Got: %v", child.Attr)
}
if len(child.result) == 0 {
t.Errorf("Expected some result.")
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return
}
uo := flatbuffers.GetUOffsetT(child.result)
r := new(task.Result)
r.Init(child.result, uo)
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if r.UidmatrixLength() != 1 {
t.Errorf("Expected 1 matrix. Got: %v", r.UidmatrixLength())
}
var ul task.UidList
if ok := r.Uidmatrix(&ul, 0); !ok {
t.Errorf("While parsing uidlist")
}
if ul.UidsLength() != 5 {
t.Errorf("Expected 5 friends. Got: %v", ul.UidsLength())
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if ul.Uids(0) != 23 || ul.Uids(1) != 24 || ul.Uids(2) != 25 ||
ul.Uids(3) != 31 || ul.Uids(4) != 101 {
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t.Errorf("Friend ids don't match")
}
if len(child.Children) != 1 || child.Children[0].Attr != "name" {
t.Errorf("Expected attr name")
}
child = child.Children[0]
uo = flatbuffers.GetUOffsetT(child.result)
r.Init(child.result, uo)
if r.ValuesLength() != 5 {
t.Errorf("Expected 5 names of 5 friends")
}
checkName(t, r, 0, "Rick Grimes")
checkName(t, r, 1, "Glenn Rhee")
checkName(t, r, 2, "Daryl Dixon")
checkName(t, r, 3, "Andrea")
{
var tv task.Value
if ok := r.Values(&tv, 4); !ok {
t.Error("Unable to retrieve value")
}
if tv.ValLength() != 1 || tv.ValBytes()[0] != 0x00 {
t.Error("Expected a null byte")
}
}
checkSingleValue(t, sg.Children[1], "name", "Michonne")
checkSingleValue(t, sg.Children[2], "gender", "female")
checkSingleValue(t, sg.Children[3], "status", "alive")
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defer os.RemoveAll(dir)
// Alright. Now we have everything set up. Let's create the query.
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query := `
{
me(_uid_:0x01) {
name
gender
status
friend {
name
}
}
}
`
gq, err := gql.Parse(query)
if err != nil {
t.Error(err)
}
sg, err := ToSubGraph(gq, ps)
if err != nil {
t.Error(err)
}
ch := make(chan error)
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var l Latency
js, err := sg.ToJson(&l)
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if err != nil {
t.Error(err)
}
fmt.Printf(string(js))