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|
package x
import (
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
type person struct {
name string
age int
}
func withName(name string) Option[*person] {
return With(func(person *person) {
person.name = name
})
}
func withAge(age int) Option[*person] {
return With(func(person *person) {
person.age = age
})
}
func TestOption(t *testing.T) {
t.Run("New", func(t *testing.T) {
t.Run("without options", func(t *testing.T) {
item := New[*person]()
require.NotNil(t, item)
assert.Equal(t, "", item.name)
assert.Zero(t, item.age)
})
t.Run("with name", func(t *testing.T) {
item := New[*person](withName("mo"))
require.NotNil(t, item)
assert.Equal(t, "mo", item.name)
})
t.Run("with age", func(t *testing.T) {
item := New[*person](withAge(42))
require.NotNil(t, item)
assert.Equal(t, 42, item.age)
})
})
t.Run("NewWith", func(t *testing.T) {
t.Run("without options", func(t *testing.T) {
p := &person{}
item := NewWith[*person](p)
require.NotNil(t, item)
require.Same(t, p, item)
assert.Equal(t, "", item.name)
assert.Zero(t, item.age)
})
t.Run("with name", func(t *testing.T) {
p := &person{}
item := NewWith[*person](p, withName("mo"))
require.NotNil(t, item)
require.Same(t, p, item)
assert.Equal(t, "mo", item.name)
})
t.Run("with age", func(t *testing.T) {
p := &person{}
item := NewWith[*person](p, withAge(42))
require.NotNil(t, item)
require.Same(t, p, item)
assert.Equal(t, 42, item.age)
})
})
}
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