creates directory with single file

README.md

@@ -76,7 +76,7 @@ The concurrency of the archiver can be configured using the corresponding flag:
 pzip --concurrency 2 /path/to/compressed.zip path/to/file_or_directory1 path/to/file_or_directory2 ... path/to/file_or_directoryN
 
 ```
-or by using passing the `Concurrency` option:
+or by passing the `Concurrency` option:
 ```go
 archiver, err := pzip.NewArchiver(archive, Concurrency(2))
 ```

cli_test.go

@@ -24,7 +24,8 @@ func TestCLI(t *testing.T) {
 		defer os.RemoveAll(archivePath)
 
 		cli := pzip.CLI{archivePath, files, runtime.GOMAXPROCS(0)}
-		cli.Archive(context.Background())
+		err := cli.Archive(context.Background())
+		assert.NoError(t, err)
 
 		archiveReader := testutils.GetArchiveReader(t, archivePath)
 		defer archiveReader.Close()

extractor.go

@@ -0,0 +1,25 @@
+package pzip
+
+import (
+	"os"
+	"path/filepath"
+
+	"github.com/klauspost/compress/zip"
+)
+
+type Extractor struct {
+	outputDir string
+}
+
+func NewExtractor(outputDir string) *Extractor {
+	return &Extractor{outputDir: outputDir}
+}
+
+func (e *Extractor) Extract(archivePath string) {
+	archiveReader, _ := zip.OpenReader(archivePath)
+	defer archiveReader.Close()
+
+	file := archiveReader.File[0]
+
+	os.Mkdir(filepath.Join(e.outputDir, file.Name), file.Mode())
+}

extractor_test.go

@@ -0,0 +1,28 @@
+package pzip
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/alecthomas/assert/v2"
+)
+
+const (
+	testArchiveFixture = testdataRoot + "test.zip" // test.zip fixture is an archive of the helloDirectory fixture
+	outputDirPath      = testdataRoot + "test"
+)
+
+func TestExtract(t *testing.T) {
+	t.Run("writes output directory with correct name", func(t *testing.T) {
+		err := os.Mkdir(outputDirPath, 0755)
+		assert.NoError(t, err)
+		defer os.RemoveAll(outputDirPath)
+
+		extractor := NewExtractor(outputDirPath)
+		extractor.Extract(testArchiveFixture)
+
+		_, err = os.ReadDir(filepath.Join(outputDirPath, "hello"))
+		assert.NoError(t, err)
+	})
+}

internal/testutils/archiver.go

@@ -28,7 +28,7 @@ func GetFileInfo(t testing.TB, name string) fs.FileInfo {
 	t.Helper()
 
 	info, err := os.Stat(name)
-	assert.NoError(t, err, fmt.Sprintf("could not get file into fot %s", name))
+	assert.NoError(t, err, fmt.Sprintf("could not get file info for %s", name))
 
 	return info
 }