mirror of
https://github.com/miguelmota/cointop
synced 2024-11-06 21:20:34 +00:00
56 lines
1.9 KiB
Go
56 lines
1.9 KiB
Go
/*
|
|
Copyright 2014 The Perkeep Authors
|
|
|
|
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 readerutil
|
|
|
|
import (
|
|
"os"
|
|
"strings"
|
|
"testing"
|
|
)
|
|
|
|
func TestFakeSeeker(t *testing.T) {
|
|
rs := NewFakeSeeker(strings.NewReader("foobar"), 6)
|
|
if pos, err := rs.Seek(0, os.SEEK_END); err != nil || pos != 6 {
|
|
t.Fatalf("SEEK_END = %d, %v; want 6, nil", pos, err)
|
|
}
|
|
if pos, err := rs.Seek(0, os.SEEK_CUR); err != nil || pos != 6 {
|
|
t.Fatalf("SEEK_CUR = %d, %v; want 6, nil", pos, err)
|
|
}
|
|
if pos, err := rs.Seek(0, os.SEEK_SET); err != nil || pos != 0 {
|
|
t.Fatalf("SEEK_SET = %d, %v; want 0, nil", pos, err)
|
|
}
|
|
|
|
buf := make([]byte, 3)
|
|
if n, err := rs.Read(buf); n != 3 || err != nil || string(buf) != "foo" {
|
|
t.Fatalf("First read = %d, %v (buf = %q); want foo", n, err, buf)
|
|
}
|
|
if pos, err := rs.Seek(0, os.SEEK_CUR); err != nil || pos != 3 {
|
|
t.Fatalf("Seek cur pos after first read = %d, %v; want 3, nil", pos, err)
|
|
}
|
|
if n, err := rs.Read(buf); n != 3 || err != nil || string(buf) != "bar" {
|
|
t.Fatalf("Second read = %d, %v (buf = %q); want foo", n, err, buf)
|
|
}
|
|
|
|
if pos, err := rs.Seek(1, os.SEEK_SET); err != nil || pos != 1 {
|
|
t.Fatalf("SEEK_SET = %d, %v; want 1, nil", pos, err)
|
|
}
|
|
const msg = "attempt to read from fake seek offset"
|
|
if _, err := rs.Read(buf); err == nil || !strings.Contains(err.Error(), msg) {
|
|
t.Fatalf("bogus Read after seek = %v; want something containing %q", err, msg)
|
|
}
|
|
}
|