type_unit_amount_test.go

package recurly

import (
	"bytes"
	"encoding/xml"
	"testing"

	"github.com/google/go-cmp/cmp"
)

func TestUnitAmount(t *testing.T) {
	type s struct {
		Amount UnitAmount `xml:"amount,omitempty"`
	}

	tests := []struct {
		v        s
		expected string
	}{
		{v: s{Amount: UnitAmount{USD: 1000}}, expected: "<s><amount><USD>1000</USD></amount></s>"},
		{v: s{Amount: UnitAmount{USD: 800, EUR: 650}}, expected: "<s><amount><USD>800</USD><EUR>650</EUR></amount></s>"},
		{v: s{Amount: UnitAmount{EUR: 650}}, expected: "<s><amount><EUR>650</EUR></amount></s>"},
		{v: s{Amount: UnitAmount{GBP: 3000}}, expected: "<s><amount><GBP>3000</GBP></amount></s>"},
		{v: s{Amount: UnitAmount{CAD: 300}}, expected: "<s><amount><CAD>300</CAD></amount></s>"},
		{v: s{Amount: UnitAmount{AUD: 400}}, expected: "<s><amount><AUD>400</AUD></amount></s>"},
		{v: s{}, expected: "<s></s>"},
		{v: s{Amount: UnitAmount{USD: 1}}, expected: "<s><amount><USD>1</USD></amount></s>"},
	}

	for _, tt := range tests {
		var given bytes.Buffer
		if err := xml.NewEncoder(&given).Encode(tt.expected); err != nil {
			t.Fatalf("unexpected error: %v", err)
		}

		buf := bytes.NewBufferString(tt.expected)
		var dst s
		if err := xml.NewDecoder(buf).Decode(&dst); err != nil {
			t.Fatalf("unexpected error: %v", err)
		} else if diff := cmp.Diff(tt.v, dst); diff != "" {
			t.Fatal(diff)
		}
	}
}