read mca region file

save/region/mca_test.go

@@ -0,0 +1,46 @@
+package region
+
+import (
+	"bytes"
+	"compress/zlib"
+	"io/ioutil"
+	"testing"
+)
+
+func TestIn(t *testing.T) {
+	for i := -10000; i < 10000; i++ {
+		getX, _ := In(i, i)
+		want := i % 32
+		if want < 0 {
+			want += 32
+		}
+
+		if getX != want {
+			t.Errorf("fail when convert cord: get %d, want %d", getX, want)
+		}
+	}
+}
+
+func TestReadRegion(t *testing.T) {
+	r, err := OpenRegion("../testdata/region/r.0.-1.mca")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	s, err := r.ReadSector(In(31, 0))
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	reader, err := zlib.NewReader(bytes.NewReader(s[1:]))
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	s, err = ioutil.ReadAll(reader)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	t.Log(s)
+}