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+package intAndBytesUtil
+
+import (
+	"encoding/binary"
+	"testing"
+)
+
+func TestInt16ToBytes(t *testing.T) {
+	var expectedBigEndian []byte = []byte{1, 0}
+	var expectedLittleEndian []byte = []byte{0, 1}
+	var givenInt int16 = 256
+
+	result := Int16ToBytes(givenInt, binary.BigEndian)
+	if equal(result, expectedBigEndian) == false {
+		t.Errorf("IntToBytes(%v) failed.Got %v, expected %v", givenInt, result, expectedBigEndian)
+	}
+
+	result = Int16ToBytes(givenInt, binary.LittleEndian)
+	if equal(result, expectedLittleEndian) == false {
+		t.Errorf("IntToBytes(%v) failed.Got %v, expected %v", givenInt, result, expectedLittleEndian)
+	}
+}
+
+func TestInt32ToBytes(t *testing.T) {
+	var expectedBigEndian []byte = []byte{0, 0, 1, 0}
+	var expectedLittleEndian []byte = []byte{0, 1, 0, 0}
+	var givenInt int32 = 256
+
+	result := Int32ToBytes(givenInt, binary.BigEndian)
+	if equal(result, expectedBigEndian) == false {
+		t.Errorf("IntToBytes(%v) failed.Got %v, expected %v", givenInt, result, expectedBigEndian)
+	}
+
+	result = Int32ToBytes(givenInt, binary.LittleEndian)
+	if equal(result, expectedLittleEndian) == false {
+		t.Errorf("IntToBytes(%v) failed.Got %v, expected %v", givenInt, result, expectedLittleEndian)
+	}
+}
+
+func TestInt64ToBytes(t *testing.T) {
+	var expectedBigEndian []byte = []byte{0, 0, 0, 0, 0, 0, 1, 0}
+	var expectedLittleEndian []byte = []byte{0, 1, 0, 0, 0, 0, 0, 0}
+	var givenInt int64 = 256
+
+	result := Int64ToBytes(givenInt, binary.BigEndian)
+	if equal(result, expectedBigEndian) == false {
+		t.Errorf("IntToBytes(%v) failed.Got %v, expected %v", givenInt, result, expectedBigEndian)
+	}
+
+	result = Int64ToBytes(givenInt, binary.LittleEndian)
+	if equal(result, expectedLittleEndian) == false {
+		t.Errorf("IntToBytes(%v) failed.Got %v, expected %v", givenInt, result, expectedLittleEndian)
+	}
+}
+
+func equal(b1, b2 []byte) bool {
+	if len(b1) != len(b2) {
+		return false
+	}
+
+	for i := 0; i < len(b1); i++ {
+		if b1[i] != b2[i] {
+			return false
+		}
+	}
+
+	return true
+}