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import (
"bytes"
"encoding/json"
"net/http"
"net/http/httptest"
"testing"
"github.com/Wei-Shaw/sub2api/internal/service"
"github.com/gin-gonic/gin"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
// newCreateAndRedeemHandler creates a RedeemHandler with a non-nil (but minimal)
// RedeemService so that CreateAndRedeem's nil guard passes and we can test the
// parameter-validation layer that runs before any service call.
func newCreateAndRedeemHandler() *RedeemHandler {
return &RedeemHandler{
adminService: newStubAdminService(),
redeemService: &service.RedeemService{}, // non-nil to pass nil guard
}
}
// postCreateAndRedeemValidation calls CreateAndRedeem and returns the response
// status code. For cases that pass validation and proceed into the service layer,
// a panic may occur (because RedeemService internals are nil); this is expected
// and treated as "validation passed" (returns 0 to indicate panic).
func postCreateAndRedeemValidation(t *testing.T, handler *RedeemHandler, body any) (code int) {
t.Helper()
gin.SetMode(gin.TestMode)
w := httptest.NewRecorder()
c, _ := gin.CreateTestContext(w)
jsonBytes, err := json.Marshal(body)
require.NoError(t, err)
c.Request, _ = http.NewRequest(http.MethodPost, "/api/v1/admin/redeem-codes/create-and-redeem", bytes.NewReader(jsonBytes))
c.Request.Header.Set("Content-Type", "application/json")
defer func() {
if r := recover(); r != nil {
// Panic means we passed validation and entered service layer (expected for minimal stub).
code = 0
}
}()
handler.CreateAndRedeem(c)
return w.Code
}
func TestCreateAndRedeem_TypeDefaultsToBalance(t *testing.T) {
// 不传 type 字段时应默认 balance，不触发 subscription 校验。
// 验证通过后进入 service 层会 panic（返回 0），说明默认值生效。
h := newCreateAndRedeemHandler()
code := postCreateAndRedeemValidation(t, h, map[string]any{
"code": "test-balance-default",
"value": 10.0,
"user_id": 1,
})
assert.NotEqual(t, http.StatusBadRequest, code,
"omitting type should default to balance and pass validation")
}
func TestCreateAndRedeem_SubscriptionRequiresGroupID(t *testing.T) {
h := newCreateAndRedeemHandler()
code := postCreateAndRedeemValidation(t, h, map[string]any{
"code": "test-sub-no-group",
"type": "subscription",
"value": 29.9,
"user_id": 1,
"validity_days": 30,
// group_id 缺失
})
assert.Equal(t, http.StatusBadRequest, code)
}
func TestCreateAndRedeem_SubscriptionRequiresPositiveValidityDays(t *testing.T) {
groupID := int64(5)
h := newCreateAndRedeemHandler()
cases := []struct {
name string
validityDays int
}{
{"zero", 0},
{"negative", -1},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
code := postCreateAndRedeemValidation(t, h, map[string]any{
"code": "test-sub-bad-days-" + tc.name,
"type": "subscription",
"value": 29.9,
"user_id": 1,
"group_id": groupID,
"validity_days": tc.validityDays,
})
assert.Equal(t, http.StatusBadRequest, code)
})
}
}
func TestCreateAndRedeem_SubscriptionValidParamsPassValidation(t *testing.T) {
groupID := int64(5)
h := newCreateAndRedeemHandler()
code := postCreateAndRedeemValidation(t, h, map[string]any{
"code": "test-sub-valid",
"type": "subscription",
"value": 29.9,
"user_id": 1,
"group_id": groupID,
"validity_days": 31,
})
assert.NotEqual(t, http.StatusBadRequest, code,
"valid subscription params should pass validation")
}
func TestCreateAndRedeem_BalanceIgnoresSubscriptionFields(t *testing.T) {
h := newCreateAndRedeemHandler()
// balance 类型不传 group_id 和 validity_days，不应报 400
code := postCreateAndRedeemValidation(t, h, map[string]any{
"code": "test-balance-no-extras",
"type": "balance",
"value": 50.0,
"user_id": 1,
})
assert.NotEqual(t, http.StatusBadRequest, code,
"balance type should not require group_id or validity_days")
}
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