lp_unix_test.go

     1  // Copyright 2013 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  //go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
     6  
     7  package exec
     8  
     9  import (
    10  	"os"
    11  	"testing"
    12  )
    13  
    14  func TestLookPathUnixEmptyPath(t *testing.T) {
    15  	tmp, err := os.MkdirTemp("", "TestLookPathUnixEmptyPath")
    16  	if err != nil {
    17  		t.Fatal("TempDir failed: ", err)
    18  	}
    19  	defer os.RemoveAll(tmp)
    20  	wd, err := os.Getwd()
    21  	if err != nil {
    22  		t.Fatal("Getwd failed: ", err)
    23  	}
    24  	err = os.Chdir(tmp)
    25  	if err != nil {
    26  		t.Fatal("Chdir failed: ", err)
    27  	}
    28  	defer os.Chdir(wd)
    29  
    30  	f, err := os.OpenFile("exec_me", os.O_CREATE|os.O_EXCL, 0700)
    31  	if err != nil {
    32  		t.Fatal("OpenFile failed: ", err)
    33  	}
    34  	err = f.Close()
    35  	if err != nil {
    36  		t.Fatal("Close failed: ", err)
    37  	}
    38  
    39  	t.Setenv("PATH", "")
    40  
    41  	path, err := LookPath("exec_me")
    42  	if err == nil {
    43  		t.Fatal("LookPath found exec_me in empty $PATH")
    44  	}
    45  	if path != "" {
    46  		t.Fatalf("LookPath path == %q when err != nil", path)
    47  	}
    48  }
    49
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