1 files changed, 72 insertions, 0 deletions
diff --git a/accounts/abi/numbers_test.go b/accounts/abi/numbers_test.go
new file mode 100644
index 000000000..319d7fb51
--- /dev/null
+++ b/accounts/abi/numbers_test.go
@@ -0,0 +1,72 @@
+package abi
+
+import (
+	"bytes"
+	"math/big"
+	"reflect"
+	"testing"
+)
+
+func TestNumberTypes(t *testing.T) {
+	ubytes := make([]byte, 32)
+	ubytes[31] = 1
+	sbytesmin := []byte{1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}
+
+	unsigned := U256(big.NewInt(1))
+	if !bytes.Equal(unsigned, ubytes) {
+		t.Error("expected %x got %x", ubytes, unsigned)
+	}
+
+	signed := S256(big.NewInt(1))
+	if !bytes.Equal(signed, ubytes) {
+		t.Error("expected %x got %x", ubytes, unsigned)
+	}
+
+	signed = S256(big.NewInt(-1))
+	if !bytes.Equal(signed, sbytesmin) {
+		t.Error("expected %x got %x", ubytes, unsigned)
+	}
+}
+
+func TestPackNumber(t *testing.T) {
+	ubytes := make([]byte, 32)
+	ubytes[31] = 1
+	sbytesmin := []byte{1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}
+	maxunsigned := []byte{255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}
+
+	packed := packNum(reflect.ValueOf(1), IntTy)
+	if !bytes.Equal(packed, ubytes) {
+		t.Errorf("expected %x got %x", ubytes, packed)
+	}
+	packed = packNum(reflect.ValueOf(-1), IntTy)
+	if !bytes.Equal(packed, sbytesmin) {
+		t.Errorf("expected %x got %x", ubytes, packed)
+	}
+	packed = packNum(reflect.ValueOf(1), UintTy)
+	if !bytes.Equal(packed, ubytes) {
+		t.Errorf("expected %x got %x", ubytes, packed)
+	}
+	packed = packNum(reflect.ValueOf(-1), UintTy)
+	if !bytes.Equal(packed, maxunsigned) {
+		t.Errorf("expected %x got %x", maxunsigned, packed)
+	}
+
+	packed = packNum(reflect.ValueOf("string"), UintTy)
+	if packed != nil {
+		t.Errorf("expected 'string' to pack to nil. got %x instead", packed)
+	}
+}
+
+func TestSigned(t *testing.T) {
+	if isSigned(reflect.ValueOf(uint(10))) {
+		t.Error()
+	}
+
+	if !isSigned(reflect.ValueOf(int(10))) {
+		t.Error()
+	}
+
+	if !isSigned(reflect.ValueOf(big.NewInt(10))) {
+		t.Error()
+	}
+}