forked from ipfs/go-datastore
/
basic_tests.go
172 lines (142 loc) · 3.34 KB
/
basic_tests.go
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package dstest
import (
"bytes"
"fmt"
"math/rand"
"sort"
"testing"
dstore "github.com/ipfs/go-datastore"
dsq "github.com/ipfs/go-datastore/query"
)
func SubtestBasicPutGet(t *testing.T, ds dstore.Datastore) {
k := dstore.NewKey("foo")
val := []byte("Hello Datastore!")
err := ds.Put(k, val)
if err != nil {
t.Fatal("error putting to datastore: ", err)
}
have, err := ds.Has(k)
if err != nil {
t.Fatal("error calling has on key we just put: ", err)
}
if !have {
t.Fatal("should have key foo, has returned false")
}
out, err := ds.Get(k)
if err != nil {
t.Fatal("error getting value after put: ", err)
}
outb, ok := out.([]byte)
if !ok {
t.Fatalf("output type wasnt []byte, it was %T", out)
}
if !bytes.Equal(outb, val) {
t.Fatal("value received on get wasnt what we expected:", outb)
}
have, err = ds.Has(k)
if err != nil {
t.Fatal("error calling has after get: ", err)
}
if !have {
t.Fatal("should have key foo, has returned false")
}
err = ds.Delete(k)
if err != nil {
t.Fatal("error calling delete: ", err)
}
have, err = ds.Has(k)
if err != nil {
t.Fatal("error calling has after delete: ", err)
}
if have {
t.Fatal("should not have key foo, has returned true")
}
}
func SubtestNotFounds(t *testing.T, ds dstore.Datastore) {
badk := dstore.NewKey("notreal")
val, err := ds.Get(badk)
if err != dstore.ErrNotFound {
t.Fatal("expected ErrNotFound for key that doesnt exist, got: ", err)
}
if val != nil {
t.Fatal("get should always return nil for not found values")
}
have, err := ds.Has(badk)
if err != nil {
t.Fatal("error calling has on not found key: ", err)
}
if have {
t.Fatal("has returned true for key we don't have")
}
}
func SubtestManyKeysAndQuery(t *testing.T, ds dstore.Datastore) {
var keys []dstore.Key
var keystrs []string
var values [][]byte
count := 100
for i := 0; i < count; i++ {
s := fmt.Sprintf("%dkey%d", i, i)
dsk := dstore.NewKey(s)
keystrs = append(keystrs, dsk.String())
keys = append(keys, dsk)
buf := make([]byte, 64)
rand.Read(buf)
values = append(values, buf)
}
t.Logf("putting %d values", count)
for i, k := range keys {
err := ds.Put(k, values[i])
if err != nil {
t.Fatalf("error on put[%d]: %s", i, err)
}
}
t.Log("getting values back")
for i, k := range keys {
val, err := ds.Get(k)
if err != nil {
t.Fatalf("error on get[%d]: %s", i, err)
}
valb, ok := val.([]byte)
if !ok {
t.Fatalf("expected []byte as output from get, got: %T", val)
}
if !bytes.Equal(valb, values[i]) {
t.Fatal("input value didnt match the one returned from Get")
}
}
t.Log("querying values")
q := dsq.Query{KeysOnly: true}
resp, err := ds.Query(q)
if err != nil {
t.Fatal("calling query: ", err)
}
t.Log("aggregating query results")
var outkeys []string
for {
res, ok := resp.NextSync()
if res.Error != nil {
t.Fatal("query result error: ", res.Error)
}
if !ok {
break
}
outkeys = append(outkeys, res.Key)
}
t.Log("verifying query output")
sort.Strings(keystrs)
sort.Strings(outkeys)
if len(keystrs) != len(outkeys) {
t.Fatal("got wrong number of keys back")
}
for i, s := range keystrs {
if outkeys[i] != s {
t.Fatalf("in key output, got %s but expected %s", outkeys[i], s)
}
}
t.Log("deleting all keys")
for _, k := range keys {
if err := ds.Delete(k); err != nil {
t.Fatal(err)
}
}
}