refactor project structure

lib/geohash/geohash_test.go

@@ -0,0 +1,39 @@
+package geohash
+
+import (
+	"fmt"
+	"math"
+	"testing"
+)
+
+func TestToRange(t *testing.T) {
+	neighbor := []byte{0x00, 0x00, 0x00, 0x00, 0xE0, 0x00, 0x00, 0x00}
+	range_ := ToRange(neighbor, 36)
+	expectedLower := ToInt([]byte{0x00, 0x00, 0x00, 0x00, 0xE0, 0x00, 0x00, 0x00})
+	expectedUpper := ToInt([]byte{0x00, 0x00, 0x00, 0x00, 0xF0, 0x00, 0x00, 0x00})
+	if expectedLower != range_[0] {
+		t.Error("incorrect lower")
+	}
+	if expectedUpper != range_[1] {
+		t.Error("incorrect upper")
+	}
+}
+
+func TestEncode(t *testing.T) {
+	lat0 := 48.669
+	lng0 := -4.32913
+	hash := Encode(lat0, lng0)
+	str := ToString(FromInt(hash))
+	if str != "gbsuv7zt7zntw" {
+		t.Error("encode error")
+	}
+	lat, lng := Decode(hash)
+	if math.Abs(lat-lat0) > 1e-6 || math.Abs(lng-lng0) > 1e-6 {
+		t.Error("decode error")
+	}
+}
+
+func TestGetNeighbours(t *testing.T) {
+	ranges := GetNeighbours(90, 180, 630*1000)
+	fmt.Printf("%#v", ranges)
+}