github.com/NeowayLabs/nash@v0.2.2-0.20200127205349-a227041ffd50/nash_test.go (about)

     1  package nash
     2  
     3  import (
     4  	"bytes"
     5  	"io/ioutil"
     6  	"os"
     7  	"testing"
     8  
     9  	"github.com/madlambda/nash/sh"
    10  	"github.com/madlambda/nash/tests"
    11  )
    12  
    13  // only testing the public API
    14  // bypass to internal sh.Shell
    15  
    16  func TestExecuteFile(t *testing.T) {
    17  	testfile := tests.Testdir + "/ex1.sh"
    18  
    19  	var out bytes.Buffer
    20  	shell, cleanup := newTestShell(t)
    21  	defer cleanup()
    22  
    23  	shell.SetNashdPath(tests.Nashcmd)
    24  	shell.SetStdout(&out)
    25  	shell.SetStderr(os.Stderr)
    26  	shell.SetStdin(os.Stdin)
    27  
    28  	err := shell.ExecuteFile(testfile)
    29  	if err != nil {
    30  		t.Error(err)
    31  		return
    32  	}
    33  
    34  	if string(out.Bytes()) != "hello world\n" {
    35  		t.Errorf("Wrong command output: '%s'", string(out.Bytes()))
    36  		return
    37  	}
    38  }
    39  
    40  func TestExecuteString(t *testing.T) {
    41  	shell, cleanup := newTestShell(t)
    42  	defer cleanup()
    43  
    44  	var out bytes.Buffer
    45  
    46  	shell.SetStdout(&out)
    47  
    48  	err := shell.ExecuteString("-ínput-", "echo -n AAA")
    49  	if err != nil {
    50  		t.Error(err)
    51  		return
    52  	}
    53  
    54  	if string(out.Bytes()) != "AAA" {
    55  		t.Errorf("Unexpected '%s'", string(out.Bytes()))
    56  		return
    57  	}
    58  
    59  	out.Reset()
    60  
    61  	err = shell.ExecuteString("-input-", `
    62          PROMPT="humpback> "
    63          setenv PROMPT
    64          `)
    65  	if err != nil {
    66  		t.Error(err)
    67  		return
    68  	}
    69  
    70  	prompt := shell.Prompt()
    71  	if prompt != "humpback> " {
    72  		t.Errorf("Invalid prompt = %s", prompt)
    73  		return
    74  	}
    75  
    76  }
    77  
    78  func TestSetvar(t *testing.T) {
    79  	shell, cleanup := newTestShell(t)
    80  	defer cleanup()
    81  
    82  	shell.Newvar("__TEST__", sh.NewStrObj("something"))
    83  
    84  	var out bytes.Buffer
    85  	shell.SetStdout(&out)
    86  
    87  	err := shell.Exec("TestSetvar", `echo -n $__TEST__`)
    88  
    89  	if err != nil {
    90  		t.Error(err)
    91  		return
    92  	}
    93  
    94  	if string(out.Bytes()) != "something" {
    95  		t.Errorf("Value differ: '%s' != '%s'", string(out.Bytes()), "something")
    96  		return
    97  	}
    98  
    99  	val, ok := shell.Getvar("__TEST__")
   100  
   101  	if !ok || val.String() != "something" {
   102  		t.Errorf("Getvar doesn't work: '%s' != '%s'", val, "something")
   103  		return
   104  	}
   105  }
   106  
   107  func newTestShell(t *testing.T) (*Shell, func()) {
   108  	t.Helper()
   109  
   110  	nashpath, pathclean := tmpdir(t)
   111  	nashroot, rootclean := tmpdir(t)
   112  
   113  	s, err := NewAbort(nashpath, nashroot)
   114  	if err != nil {
   115  		t.Fatal(err)
   116  	}
   117  
   118  	return s, func() {
   119  		pathclean()
   120  		rootclean()
   121  	}
   122  }
   123  
   124  func tmpdir(t *testing.T) (string, func()) {
   125  	t.Helper()
   126  
   127  	dir, err := ioutil.TempDir("", "nash-tests")
   128  	if err != nil {
   129  		t.Fatal(err)
   130  	}
   131  
   132  	return dir, func() {
   133  		err := os.RemoveAll(dir)
   134  		if err != nil {
   135  			t.Fatal(err)
   136  		}
   137  	}
   138  }