feat: add independent platform modules and multi-provider storage

storage/local/local_test.go

@@ -0,0 +1,42 @@
+package local
+
+import (
+	"context"
+	"git.yuntuo.hk/k2safe/go-omni/storage/storagetest"
+	"io"
+	"os"
+	"strings"
+	"testing"
+)
+
+func TestContractAndAtomicFailure(t *testing.T) {
+	root := t.TempDir()
+	s, err := New(root, 64)
+	if err != nil {
+		t.Fatal(err)
+	}
+	storagetest.Run(t, s)
+	ctx := context.Background()
+	if _, err = s.Put(ctx, "saved", strings.NewReader("old"), 3, "text/plain"); err != nil {
+		t.Fatal(err)
+	}
+	if _, err = s.Put(ctx, "saved", strings.NewReader("short"), 20, "text/plain"); err == nil {
+		t.Fatal("short upload committed")
+	}
+	again, _ := New(root, 64)
+	object, err := again.Get(ctx, "saved")
+	if err != nil {
+		t.Fatal(err)
+	}
+	raw, _ := io.ReadAll(object.Body)
+	object.Body.Close()
+	if string(raw) != "old" {
+		t.Fatal(string(raw))
+	}
+	if err = os.Symlink(s.path("saved"), s.path("linked")); err != nil {
+		t.Fatal(err)
+	}
+	if _, err = s.Get(ctx, "linked"); err == nil {
+		t.Fatal("symlink followed")
+	}
+}