github.com/kolbycrouch/elvish@v0.14.1-0.20210614162631-215b9ac1c423/pkg/cli/lscolors/feature_test.go (about)

     1  package lscolors
     2  
     3  import (
     4  	"os"
     5  	"runtime"
     6  	"testing"
     7  
     8  	"src.elv.sh/pkg/testutil"
     9  )
    10  
    11  func TestDetermineFeature(t *testing.T) {
    12  	test := func(fname string, mh bool, wantedFeature feature) {
    13  		t.Helper()
    14  		feature, err := determineFeature(fname, mh)
    15  		if err != nil {
    16  			t.Errorf("determineFeature(%q, %v) returns error %v, want no error",
    17  				fname, mh, err)
    18  		}
    19  		if feature != wantedFeature {
    20  			t.Errorf("determineFeature(%q, %v) returns feature %v, want %v",
    21  				fname, mh, feature, wantedFeature)
    22  		}
    23  	}
    24  
    25  	_, cleanup := testutil.InTestDir()
    26  	defer cleanup()
    27  
    28  	create("a", 0600)
    29  	// Regular file.
    30  	test("a", true, featureRegular)
    31  
    32  	// Symlink.
    33  	err := os.Symlink("a", "symlink")
    34  	if err != nil {
    35  		t.Logf("Failed to create symlink: %v; skipping symlink test", err)
    36  	} else {
    37  		test("symlink", true, featureSymlink)
    38  	}
    39  
    40  	// Broken symlink.
    41  	err = os.Symlink("aaaa", "bad-symlink")
    42  	if err != nil {
    43  		t.Logf("Failed to create bad symlink: %v; skipping bad symlink test", err)
    44  	} else {
    45  		test("bad-symlink", true, featureOrphanedSymlink)
    46  	}
    47  
    48  	if runtime.GOOS != "windows" {
    49  		// Multiple hard links.
    50  		err := os.Link("a", "a2")
    51  		if err != nil {
    52  			t.Logf("Failed to create hard link: %v; skipping hard link test", err)
    53  		} else {
    54  			test("a", true, featureMultiHardLink)
    55  		}
    56  	}
    57  
    58  	// Don't test for multiple hard links.
    59  	test("a", false, featureRegular)
    60  
    61  	// Setuid and Setgid.
    62  	// TODO(xiaq): Fails.
    63  	/*
    64  		create("su", os.ModeSetuid)
    65  		test("su", true, featureSetuid)
    66  		create("sg", os.ModeSetgid)
    67  		test("sg", true, featureSetgid)
    68  	*/
    69  
    70  	if runtime.GOOS != "windows" {
    71  		// Executable.
    72  		create("xu", 0100)
    73  		create("xg", 0010)
    74  		create("xo", 0001)
    75  		test("xu", true, featureExecutable)
    76  		test("xg", true, featureExecutable)
    77  		test("xo", true, featureExecutable)
    78  	}
    79  }
    80  
    81  func create(fname string, perm os.FileMode) {
    82  	f, err := os.OpenFile(fname, os.O_CREATE, perm)
    83  	if err != nil {
    84  		panic(err)
    85  	}
    86  	// The following call works around a termux bug where os.OpenFile does not
    87  	// set the permission bits for group and other correctly.
    88  	f.Chmod(perm)
    89  	f.Close()
    90  }