github.com/gagliardetto/golang-go@v0.0.0-20201020153340-53909ea70814/cmd/go/not-internal/web/file_test.go (about)

     1  // Copyright 2019 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package web
     6  
     7  import (
     8  	"errors"
     9  	"io/ioutil"
    10  	"os"
    11  	"path/filepath"
    12  	"testing"
    13  )
    14  
    15  func TestGetFileURL(t *testing.T) {
    16  	const content = "Hello, file!\n"
    17  
    18  	f, err := ioutil.TempFile("", "web-TestGetFileURL")
    19  	if err != nil {
    20  		t.Fatal(err)
    21  	}
    22  	defer os.Remove(f.Name())
    23  
    24  	if _, err := f.WriteString(content); err != nil {
    25  		t.Error(err)
    26  	}
    27  	if err := f.Close(); err != nil {
    28  		t.Fatal(err)
    29  	}
    30  
    31  	u, err := urlFromFilePath(f.Name())
    32  	if err != nil {
    33  		t.Fatal(err)
    34  	}
    35  
    36  	b, err := GetBytes(u)
    37  	if err != nil {
    38  		t.Fatalf("GetBytes(%v) = _, %v", u, err)
    39  	}
    40  	if string(b) != content {
    41  		t.Fatalf("after writing %q to %s, GetBytes(%v) read %q", content, f.Name(), u, b)
    42  	}
    43  }
    44  
    45  func TestGetNonexistentFile(t *testing.T) {
    46  	path, err := filepath.Abs("nonexistent")
    47  	if err != nil {
    48  		t.Fatal(err)
    49  	}
    50  
    51  	u, err := urlFromFilePath(path)
    52  	if err != nil {
    53  		t.Fatal(err)
    54  	}
    55  
    56  	b, err := GetBytes(u)
    57  	if !errors.Is(err, os.ErrNotExist) {
    58  		t.Fatalf("GetBytes(%v) = %q, %v; want _, os.ErrNotExist", u, b, err)
    59  	}
    60  }