Add test for bytes.go.

util/bytes_test.go

@@ -0,0 +1,44 @@
+package util
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestBytesToUint64(t *testing.T) {
+	cases := []struct {
+		bytes   []byte
+		int_val uint64
+		desc    string
+	}{{
+		bytes:   []byte{0x00, 0x00},
+		int_val: 0,
+		desc:    "all zero",
+	}, {
+		bytes:   []byte{0x01, 0x00},
+		int_val: 256,
+		desc:    "one in first byte",
+	}}
+	for _, c := range cases {
+		got_bytes := make([]byte, 8, 8)
+		Uint64toBytes(got_bytes, c.int_val)
+		got_int64 := BytesToUint64(c.bytes)
+		if got_int64 != c.int_val || !reflect.DeepEqual(got_bytes[6:], c.bytes) {
+			t.Errorf("Failed: %v, got %v %v", c, got_bytes, got_int64)
+		}
+
+		got_bytes = make([]byte, 4, 4)
+		Uint32toBytes(got_bytes, uint32(c.int_val))
+		got_int32 := BytesToUint32(c.bytes)
+		if uint64(got_int32) != c.int_val || !reflect.DeepEqual(got_bytes[2:], c.bytes) {
+			t.Errorf("Failed: %v, got %v %v", c, got_bytes, got_int32)
+		}
+
+		got_bytes = make([]byte, 2, 2)
+		Uint16toBytes(got_bytes, uint16(c.int_val))
+		got_int16 := BytesToUint16(c.bytes)
+		if got_int16 != uint16(c.int_val) || !reflect.DeepEqual(got_bytes, c.bytes) {
+			t.Errorf("Failed: %v, got %v %v", c, got_bytes, got_int16)
+		}
+	}
+}