github.com/kevinklinger/open_terraform@v1.3.6/noninternal/backend/backend_test.go (about)

     1  package backend
     2  
     3  import (
     4  	"io"
     5  	"io/ioutil"
     6  	"os"
     7  	"os/user"
     8  	"strings"
     9  	"testing"
    10  
    11  	"github.com/mitchellh/go-homedir"
    12  )
    13  
    14  func TestReadPathOrContents_Path(t *testing.T) {
    15  	f, cleanup := testTempFile(t)
    16  	defer cleanup()
    17  
    18  	if _, err := io.WriteString(f, "foobar"); err != nil {
    19  		t.Fatalf("err: %s", err)
    20  	}
    21  	f.Close()
    22  
    23  	contents, err := ReadPathOrContents(f.Name())
    24  
    25  	if err != nil {
    26  		t.Fatalf("err: %s", err)
    27  	}
    28  	if contents != "foobar" {
    29  		t.Fatalf("expected contents %s, got %s", "foobar", contents)
    30  	}
    31  }
    32  
    33  func TestReadPathOrContents_TildePath(t *testing.T) {
    34  	home, err := homedir.Dir()
    35  	if err != nil {
    36  		t.Fatalf("err: %s", err)
    37  	}
    38  	f, cleanup := testTempFile(t, home)
    39  	defer cleanup()
    40  
    41  	if _, err := io.WriteString(f, "foobar"); err != nil {
    42  		t.Fatalf("err: %s", err)
    43  	}
    44  	f.Close()
    45  
    46  	r := strings.NewReplacer(home, "~")
    47  	homePath := r.Replace(f.Name())
    48  	contents, err := ReadPathOrContents(homePath)
    49  
    50  	if err != nil {
    51  		t.Fatalf("err: %s", err)
    52  	}
    53  	if contents != "foobar" {
    54  		t.Fatalf("expected contents %s, got %s", "foobar", contents)
    55  	}
    56  }
    57  
    58  func TestRead_PathNoPermission(t *testing.T) {
    59  	// This skip condition is intended to get this test out of the way of users
    60  	// who are building and testing Terraform from within a Linux-based Docker
    61  	// container, where it is common for processes to be running as effectively
    62  	// root within the container.
    63  	if u, err := user.Current(); err == nil && u.Uid == "0" {
    64  		t.Skip("This test is invalid when running as root, since root can read every file")
    65  	}
    66  
    67  	f, cleanup := testTempFile(t)
    68  	defer cleanup()
    69  
    70  	if _, err := io.WriteString(f, "foobar"); err != nil {
    71  		t.Fatalf("err: %s", err)
    72  	}
    73  	f.Close()
    74  
    75  	if err := os.Chmod(f.Name(), 0); err != nil {
    76  		t.Fatalf("err: %s", err)
    77  	}
    78  
    79  	contents, err := ReadPathOrContents(f.Name())
    80  
    81  	if err == nil {
    82  		t.Fatal("Expected error, got none!")
    83  	}
    84  	if contents != "" {
    85  		t.Fatalf("expected contents %s, got %s", "", contents)
    86  	}
    87  }
    88  
    89  func TestReadPathOrContents_Contents(t *testing.T) {
    90  	input := "hello"
    91  
    92  	contents, err := ReadPathOrContents(input)
    93  
    94  	if err != nil {
    95  		t.Fatalf("err: %s", err)
    96  	}
    97  	if contents != input {
    98  		t.Fatalf("expected contents %s, got %s", input, contents)
    99  	}
   100  }
   101  
   102  func TestReadPathOrContents_TildeContents(t *testing.T) {
   103  	input := "~/hello/notafile"
   104  
   105  	contents, err := ReadPathOrContents(input)
   106  
   107  	if err != nil {
   108  		t.Fatalf("err: %s", err)
   109  	}
   110  	if contents != input {
   111  		t.Fatalf("expected contents %s, got %s", input, contents)
   112  	}
   113  }
   114  
   115  // Returns an open tempfile based at baseDir and a function to clean it up.
   116  func testTempFile(t *testing.T, baseDir ...string) (*os.File, func()) {
   117  	base := ""
   118  	if len(baseDir) == 1 {
   119  		base = baseDir[0]
   120  	}
   121  	f, err := ioutil.TempFile(base, "tf")
   122  	if err != nil {
   123  		t.Fatalf("err: %s", err)
   124  	}
   125  
   126  	return f, func() {
   127  		os.Remove(f.Name())
   128  	}
   129  }