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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package io_test
import (
. "io";
"os";
"strings";
"testing";
)
func checkSize(t *testing.T, path string, size uint64) {
dir, err := os.Stat(path);
if err != nil {
t.Fatalf("Stat %q (looking for size %d): %s", path, size, err);
}
if dir.Size != size {
t.Errorf("Stat %q: size %d want %d", path, dir.Size, size);
}
}
func TestReadFile(t *testing.T) {
filename := "rumpelstilzchen";
contents, err := ReadFile(filename);
if err == nil {
t.Fatalf("ReadFile %s: error expected, none found", filename);
}
filename = "utils_test.go";
contents, err = ReadFile(filename);
if err != nil {
t.Fatalf("ReadFile %s: %v", filename, err);
}
checkSize(t, filename, uint64(len(contents)));
}
func TestWriteFile(t *testing.T) {
filename := "_obj/rumpelstilzchen";
data :=
"Programming today is a race between software engineers striving to "
"build bigger and better idiot-proof programs, and the Universe trying "
"to produce bigger and better idiots. So far, the Universe is winning.";
if err := WriteFile(filename, strings.Bytes(data), 0644); err != nil {
t.Fatalf("WriteFile %s: %v", filename, err);
}
contents, err := ReadFile(filename);
if err != nil {
t.Fatalf("ReadFile %s: %v", filename, err);
}
if string(contents) != data {
t.Fatalf("contents = %q\nexpected = %q", string(contents), data);
}
// cleanup
os.Remove(filename); // ignore error
}
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