test cases for rand

testing/unit/assertions.go

@@ -16,6 +16,10 @@ func Assert(t *testing.T) *Assertion {
 	return assert
 }
 
+func (a *Assertion) Int64(value int64) *Int64Subject {
+	return NewInt64Subject(NewSubject(a), value)
+}
+
 func (a *Assertion) Int(value int) *IntSubject {
 	return NewIntSubject(NewSubject(a), value)
 }