chore: remove unnecessary copy file test helper

Signed-off-by: Brian McGee <[email protected]>

cmd/root_test.go

@@ -21,6 +21,7 @@ import (
 	"github.com/numtide/treefmt/stats"
 	"github.com/numtide/treefmt/test"
 	"github.com/numtide/treefmt/walk"
+	cp "github.com/otiai10/copy"
 	"github.com/stretchr/testify/require"
 )
 
@@ -933,9 +934,7 @@ func TestCacheBusting(t *testing.T) {
 		as.NoError(os.Mkdir(binPath, 0o755))
 
 		scriptPath := filepath.Join(binPath, "test-fmt-append")
-
-		test.CopyFile(t, sourcePath, scriptPath)
-		as.NoError(os.Chmod(scriptPath, 0o755))
+		as.NoError(cp.Copy(sourcePath, scriptPath, cp.Options{AddPermission: 0o755}))
 
 		// prepend our test bin directory to PATH
 		t.Setenv("PATH", binPath+":"+os.Getenv("PATH"))

test/test.go

@@ -2,7 +2,6 @@ package test
 
 import (
 	"fmt"
-	"io"
 	"os"
 	"path/filepath"
 	"testing"
@@ -124,23 +123,3 @@ func ChangeWorkDir(t *testing.T, dir string) {
 		t.Fatal(fmt.Errorf("failed to change working directory to %s: %w", dir, err))
 	}
 }
-
-func CopyFile(t *testing.T, sourcePath string, destPath string) {
-	t.Helper()
-
-	source, err := os.Open(sourcePath)
-	if err != nil {
-		t.Fatal(err, fmt.Sprintf("failed to open %s", sourcePath))
-	}
-	defer source.Close()
-
-	dest, err := os.Create(destPath)
-	if err != nil {
-		t.Fatal(err, fmt.Sprintf("failed to create %s", sourcePath))
-	}
-	defer dest.Close()
-
-	if _, err = io.Copy(dest, source); err != nil {
-		t.Fatal(err, fmt.Sprintf("failed to copy %s to %s", sourcePath, destPath))
-	}
-}