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absent_test.go
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/
absent_test.go
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package optional
import (
"fmt"
"reflect"
"testing"
)
func Test_absent_IsPresent(t *testing.T) {
tests := []struct {
name string
o *absent
want bool
}{
{"return false", _absent, false},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
o := &absent{}
if got := o.IsPresent(); got != tt.want {
t.Errorf("absent.IsPresent() = %v, want %v", got, tt.want)
}
})
}
}
func Test_absent_IsAbsent(t *testing.T) {
tests := []struct {
name string
o *absent
want bool
}{
{"return true", _absent, true},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
o := &absent{}
if got := o.IsAbsent(); got != tt.want {
t.Errorf("absent.IsAbsent() = %v, want %v", got, tt.want)
}
})
}
}
func Test_absent_Get(t *testing.T) {
tests := []struct {
name string
o *absent
want interface{}
}{
{"recover from panic", _absent, nil},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := func() interface{} {
defer func() {
if r := recover(); r != nil {
fmt.Printf("Recovered in test, reason:%s\n", r)
}
}()
return tt.o.Get()
}(); !reflect.DeepEqual(got, tt.want) {
t.Errorf("absent.Get() = %v, want %v", got, tt.want)
}
})
}
}
func Test_absent_Or(t *testing.T) {
type args struct {
defaultValue interface{}
}
tests := []struct {
name string
o *absent
args args
want interface{}
}{
{"use default value", _absent, args{1}, 1},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := tt.o.Or(tt.args.defaultValue); !reflect.DeepEqual(got, tt.want) {
t.Errorf("absent.Or() = %v, want %v", got, tt.want)
}
})
}
}
func Test_absent_OrNil(t *testing.T) {
tests := []struct {
name string
o *absent
want interface{}
}{
{"return nil", _absent, nil},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := tt.o.OrNil(); !reflect.DeepEqual(got, tt.want) {
t.Errorf("absent.OrNil() = %v, want %v", got, tt.want)
}
})
}
}
func Test_absent_OrSupply(t *testing.T) {
type args struct {
supplier func() interface{}
}
tests := []struct {
name string
o *absent
args args
want interface{}
}{
{"use supplier", _absent, args{func() interface{} { return 1 }}, 1},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := tt.o.OrSupply(tt.args.supplier); !reflect.DeepEqual(got, tt.want) {
t.Errorf("absent.OrSupply() = %v, want %v", got, tt.want)
}
})
}
}
func Test_absent_Substitute(t *testing.T) {
type args struct {
secondChoice Optional
}
tests := []struct {
name string
o *absent
args args
want Optional
}{
{"substitution", _absent, args{Of(1)}, Of(1)},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := tt.o.Substitute(tt.args.secondChoice); !reflect.DeepEqual(got, tt.want) {
t.Errorf("absent.Substitute() = %v, want %v", got, tt.want)
}
})
}
}
func Test_absent_Transform(t *testing.T) {
type args struct {
function func(interface{}) interface{}
}
tests := []struct {
name string
o *absent
args args
want Optional
}{
{"transformation", _absent, args{func(x interface{}) interface{} { return fmt.Sprintf("%v", x) }}, _absent},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := tt.o.Transform(tt.args.function); !reflect.DeepEqual(got, tt.want) {
t.Errorf("absent.Transform() = %v, want %v", got, tt.want)
}
})
}
}
func Test_absent_IfPresent(t *testing.T) {
var tmp string
type args struct {
consumer func(interface{})
}
tests := []struct {
name string
o *absent
args args
want string
}{
{"ignore consumer when absent", _absent, args{func(x interface{}) { tmp = fmt.Sprintf("%v", x) }}, ""},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
tt.o.IfPresent(tt.args.consumer)
if !reflect.DeepEqual(tmp, tt.want) {
t.Errorf("absent.Transform() = %v, want %v", tmp, tt.want)
}
})
}
}
func Test_absent_IfPresentOrElse(t *testing.T) {
var tmp string
type args struct {
consumer func(interface{})
worker func()
}
tests := []struct {
name string
o *absent
args args
want string
}{
{"use worker and ignore consumer when absent", _absent, args{
func(x interface{}) { tmp = fmt.Sprintf("%v", x) },
func() { tmp = "worker" },
}, "worker"},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
tt.o.IfPresentOrElse(tt.args.consumer, tt.args.worker)
if !reflect.DeepEqual(tmp, tt.want) {
t.Errorf("absent.Transform() = %v, want %v", tmp, tt.want)
}
})
}
}