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streams_test.go
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streams_test.go
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package alluxio
import (
"bytes"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"math/rand"
"net/http"
"reflect"
"testing"
)
var message = []byte("Greetings traveller!")
func streamHandler(t *testing.T, id int, method string, output io.Reader, expected []byte) http.HandlerFunc {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if got, want := r.URL.Path, join("", apiPrefix, streamsPrefix, fmt.Sprintf("%d", id), method); got != want {
t.Fatalf("Unexpected path: got %v, want %v", got, want)
}
if expected != nil {
bytes, err := ioutil.ReadAll(r.Body)
if err != nil {
t.Fatalf("ReadAll() failed: %v", err)
}
defer r.Body.Close()
if !reflect.DeepEqual(bytes, expected) {
t.Fatalf("Unexpected input: got %s, want %s", bytes, expected)
}
}
if output != nil {
w.Header().Set("Content-Type", "application/octet-stream")
io.Copy(w, output)
} else {
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(len(message))
}
})
}
func TestFileSystemClose(t *testing.T) {
id := rand.Int()
fs, cleanup := setupClient(t, streamHandler(t, id, close, nil, nil))
defer cleanup()
if err := fs.Close(id); err != nil {
t.Fatalf("Close() failed: %v", err)
}
}
func TestFileSystemRead(t *testing.T) {
id := rand.Int()
fs, cleanup := setupClient(t, streamHandler(t, id, read, bytes.NewBuffer(message), nil))
defer cleanup()
reader, err := fs.Read(id)
if err != nil {
t.Fatalf("Read() failed: %v", err)
}
bytes, err := ioutil.ReadAll(reader)
if err != nil {
t.Fatalf("ReadAll() failed: %v", err)
}
if !reflect.DeepEqual(bytes, message) {
t.Fatalf("Unexpected output: got %s, want %s", bytes, message)
}
}
func TestFileSystemWrite(t *testing.T) {
id := rand.Int()
fs, cleanup := setupClient(t, streamHandler(t, id, write, nil, message))
defer cleanup()
if n, err := fs.Write(id, bytes.NewBuffer(message)); err != nil {
t.Fatalf("Write() failed: %v", err)
} else if got, want := n, len(message); got != want {
t.Fatalf("Unexpected number of bytes written: got %v, want %v", got, want)
}
}