tar: mv the Getter to tar/storage

tar/storage/getter_test.go

@@ -0,0 +1,62 @@
+package storage
+
+import (
+	"bytes"
+	"io/ioutil"
+	"testing"
+)
+
+func TestGetter(t *testing.T) {
+	fgp := NewBufferFileGetPutter()
+	files := map[string]map[string][]byte{
+		"file1.txt": {"foo": []byte{60, 60, 48, 48, 0, 0, 0, 0}},
+		"file2.txt": {"bar": []byte{45, 196, 22, 240, 0, 0, 0, 0}},
+	}
+	for n, b := range files {
+		for body, sum := range b {
+			_, csum, err := fgp.Put(n, bytes.NewBufferString(body))
+			if err != nil {
+				t.Error(err)
+			}
+			if !bytes.Equal(csum, sum) {
+				t.Errorf("checksum: expected 0x%x; got 0x%x", sum, csum)
+			}
+		}
+	}
+	for n, b := range files {
+		for body := range b {
+			r, err := fgp.Get(n)
+			if err != nil {
+				t.Error(err)
+			}
+			buf, err := ioutil.ReadAll(r)
+			if err != nil {
+				t.Error(err)
+			}
+			if body != string(buf) {
+				t.Errorf("expected %q, got %q", body, string(buf))
+			}
+		}
+	}
+}
+func TestPutter(t *testing.T) {
+	fp := NewDiscardFilePutter()
+	// map[filename]map[body]crc64sum
+	files := map[string]map[string][]byte{
+		"file1.txt": {"foo": []byte{60, 60, 48, 48, 0, 0, 0, 0}},
+		"file2.txt": {"bar": []byte{45, 196, 22, 240, 0, 0, 0, 0}},
+		"file3.txt": {"baz": []byte{32, 68, 22, 240, 0, 0, 0, 0}},
+		"file4.txt": {"bif": []byte{48, 9, 150, 240, 0, 0, 0, 0}},
+	}
+	for n, b := range files {
+		for body, sum := range b {
+			_, csum, err := fp.Put(n, bytes.NewBufferString(body))
+			if err != nil {
+				t.Error(err)
+			}
+			if !bytes.Equal(csum, sum) {
+				t.Errorf("checksum on %q: expected %v; got %v", n, sum, csum)
+			}
+		}
+	}
+}