github.com/Schaudge/grailbase@v0.0.0-20240223061707-44c758a471c0/file/fsnodefuse/dirstream_test.go (about)

     1  package fsnodefuse
     2  
     3  import (
     4  	"os"
     5  	"sync/atomic"
     6  	"testing"
     7  
     8  	"github.com/Schaudge/grailbase/file/fsnode"
     9  	"github.com/stretchr/testify/assert"
    10  	"github.com/stretchr/testify/require"
    11  )
    12  
    13  // TestNameCollision verifies that we can list a directory in which there are
    14  // entries with duplicate names without panicking.
    15  func TestNameCollision(t *testing.T) {
    16  	makeTest := func(children ...fsnode.T) func(*testing.T) {
    17  		return func(t *testing.T) {
    18  			root := fsnode.NewParent(
    19  				fsnode.NewDirInfo("test"),
    20  				fsnode.ConstChildren(children...),
    21  			)
    22  			withMounted(t, root, func(mountDir string) {
    23  				f, err := os.Open(mountDir)
    24  				require.NoError(t, err, "opening mounted directory")
    25  				defer func() { assert.NoError(t, f.Close()) }()
    26  				_, err = f.Readdir(0)
    27  				assert.NoError(t, err, "reading mounted directory")
    28  				assert.Zero(t, atomic.LoadUint32(&numHandledPanics), "checking number of panics")
    29  			})
    30  		}
    31  	}
    32  	var (
    33  		aReg = fsnode.ConstLeaf(fsnode.NewRegInfo("a"), []byte{})
    34  		aDir = fsnode.NewParent(fsnode.NewDirInfo("a"), fsnode.ConstChildren())
    35  		bReg = fsnode.ConstLeaf(fsnode.NewRegInfo("b"), []byte{})
    36  		bDir = fsnode.NewParent(fsnode.NewDirInfo("b"), fsnode.ConstChildren())
    37  	)
    38  	t.Run("reg_first", makeTest(aReg, aDir))
    39  	t.Run("dir_first", makeTest(aDir, aReg))
    40  	t.Run("mixed", makeTest(aReg, aDir, aDir, bReg, aReg, bReg, aReg, bDir, aReg, aDir))
    41  }