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package mapper
import (
"fmt"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
type unregisteredType struct{}
type testObject struct {
GivenName string
FamilyName string
}
type testModel struct {
Name string
}
func TestMapper(t *testing.T) {
Register[*testObject, *testModel](func(item *testObject) *testModel {
return &testModel{
Name: fmt.Sprintf("%v %v", item.GivenName, item.FamilyName),
}
})
t.Run("MapFrom", func(t *testing.T) {
t.Run("when the mapping is registered", func(t *testing.T) {
item := &testObject{
GivenName: "Tsuyoshi",
FamilyName: "Garret",
}
model := MapFrom[*testObject, *testModel](item)
require.NotNil(t, model)
assert.Equal(t, "Tsuyoshi Garret", model.Name)
})
t.Run("When the mapping is not registered", func(t *testing.T) {
item := &unregisteredType{}
model := MapFrom[*unregisteredType, *testModel](item)
assert.Nil(t, model)
})
})
t.Run("MapEachFrom", func(t *testing.T) {
t.Run("when the mapping is registered", func(t *testing.T) {
datum := []*testObject{
{GivenName: "Tsuyoshi", FamilyName: "Garret"},
{GivenName: "Takashi", FamilyName: "Shirogane"},
}
results := MapEachFrom[*testObject, *testModel](datum)
require.NotNil(t, results)
require.Equal(t, 2, len(results))
assert.Equal(t, "Tsuyoshi Garret", results[0].Name)
assert.Equal(t, "Takashi Shirogane", results[1].Name)
})
t.Run("when the mapping is not registered", func(t *testing.T) {
datum := []*unregisteredType{
{},
}
results := MapEachFrom[*unregisteredType, *testModel](datum)
require.NotNil(t, results)
assert.Equal(t, 0, len(results))
})
})
}
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