// CookieJar - A contestant's algorithm toolbox
// Copyright (c) 2015 Peter Szilagyi. All rights reserved.
//
// CookieJar is dual licensed: use of this source code is governed by a BSD
// license that can be found in the LICENSE file. Alternatively, the CookieJar
// toolbox may be used in accordance with the terms and conditions contained
// in a signed written agreement between you and the author(s).

package osext

import (
	"os"
	"testing"
)

var testFile = "test.txt"

func TestOpen(t *testing.T) {
	// Create a file and make sure it's removed after the test
	file, err := os.Create(testFile)
	if err != nil {
		t.Fatalf("failed to create test file: %v.", err)
	}
	file.Close()
	defer os.Remove(testFile)

	// Try and read the file
	file = MustOpen(testFile)
	file.Close()
}

func TestCreate(t *testing.T) {
	// Check that a test file is non-existent
	if stats, err := os.Stat(testFile); err == nil {
		t.Errorf("file already exists: %v.", stats)
	}
	// Create an empty file and make sure it's dumped after the test
	file := MustCreate(testFile)
	file.Close()
	defer os.Remove(testFile)

	// Verify that the file has been created
	if stats, err := os.Stat(testFile); err != nil {
		t.Errorf("file doesn't exist: %v.", stats)
	}
}