// TestComposeFilter_Empty_Nothing
func TestComposeFilter_Empty_Nothing(t *testing.T) {
f := maybe.ComposeFilter()
m := maybe.Nothing()
b := f(m)
assertFalse(t, b)
}
// TestComposeFilter_True_Nothing
func TestComposeFilter_True_Nothing(t *testing.T) {
f := maybe.ComposeFilter(FilterTrue)
m := maybe.Nothing()
b := f(m)
assertFalse(t, b)
}
// TestComposeMap_Empty_Nothing
func TestComposeMap_Empty_Nothing(t *testing.T) {
f := maybe.ComposeMap()
_m := maybe.Nothing()
m := f(_m)
assertNothing(t, m)
}
// TestComposeMap_Increment_Nothing
func TestComposeMap_Increment_Nothing(t *testing.T) {
f := maybe.ComposeMap(increment)
_m := maybe.Nothing()
m := f(_m)
assertNothing(t, m)
}
// TestCall_Nothing
func TestCall_Nothing(t *testing.T) {
_m := maybe.Nothing()
m := maybe.Call(MapAny_Echo, _m)
assertNothing(t, m)
}
// TestCall_Multi_Nil
func TestCall_Multi_Nil(t *testing.T) {
arg1 := maybe.New("one")
arg2 := maybe.Nothing()
m := maybe.Call(MultiArgs_Last, arg1, arg2)
assertNothing(t, m)
}
// TestFilter_Nothing_Nil
func TestFilter_Nothing_Nil(t *testing.T) {
_m := maybe.Nothing()
m := _m.Filter(nil)
assertNothing(t, m)
}
// TestFilter_Nothing_Panic
func TestFilter_Nothing_Panic(t *testing.T) {
_m := maybe.Nothing()
m := _m.Filter(FilterPanic)
assertNothing(t, m)
}
// TestMap_Nothing_Nil
func TestMap_Nothing_Nil(t *testing.T) {
_m := maybe.Nothing()
m := _m.Map(nil)
assertNothing(t, m)
}
// TestMap_Nothing_Panic
func TestMap_Nothing_Panic(t *testing.T) {
_m := maybe.Nothing()
m := _m.Map(MapPanic)
assertNothing(t, m)
}
// TestGetOrElse_Nothing
func TestGetOrElse_Nothing(t *testing.T) {
m := maybe.Nothing()
assertGetOrElse(t, m, ELSE, ELSE)
}
// TestGetOrNil_Nothing
func TestGetOrNil_Nothing(t *testing.T) {
m := maybe.Nothing()
assertGetOrNil(t, m, nil)
}
// TestNothing
func TestNothing(t *testing.T) {
m := maybe.Nothing()
assertNothing(t, m)
}
// MapNothing
func MapNothing(m *maybe.T) *maybe.T {
return maybe.Nothing()
}
*********************************************************************/
const (
ELSE = "else"
ERROR_MSG = "error message"
FILTER_PANIC = "filter_panic"
MAP_PANIC = "map_panic"
MAPPED = "mapped"
SOMETHING = "something"
FILTER_FUNC_ERR = "maybe.T.Filter() expects func with single return value of type bool"
MAP_FUNC_ERR = "maybe.T.Map() expects func"
MAP_FUNC_RET_ERR = "maybe.T.Map() expects return types to be one of: (any), (any, bool), (any, error)"
CALL_FUNC_ERR = "maybe.Call() expects func"
)
var nothing = maybe.Nothing()
/*********************************************************************
** Test Assert Functions
*********************************************************************/
// assertNothing
func assertNothing(t *testing.T, m *maybe.T) {
if m != nothing {
t.Fatal("AssertNothing: m is not equal to maybe.Nothing()")
}
_, ok := m.Get()
if ok {
t.Fatal("assertNothing: m.Get() returned true")
}
err := m.Err()
