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middleware_request_body_test.go
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middleware_request_body_test.go
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package oas
import (
"bytes"
"encoding/json"
"fmt"
"io"
"net/http"
"net/http/httptest"
"regexp"
"testing"
"github.com/stretchr/testify/assert"
)
func TestRequestBodyValidator(t *testing.T) {
testCases := map[string]struct {
contentType string
body string
expectedStatus int
expectedBody string
}{
"valid json body": {
contentType: "application/json",
body: `{"name":"johndoe","age":7}`,
expectedStatus: http.StatusOK,
expectedBody: "pet name: johndoe",
},
"required field \"name\" is missing": {
contentType: "application/json",
body: `{"age":7}`,
expectedStatus: http.StatusBadRequest,
expectedBody: `{"errors":[{"message":"name in body is required","field":"name"}]}`,
},
"value for field \"age\" is incorrect": {
contentType: "application/json",
body: `{"name":"johndoe","age":"abc"}`,
expectedStatus: http.StatusBadRequest,
expectedBody: `{"errors":[{"message":"age in body must be of type integer: \"string\"","field":"age"}]}`,
},
"no body": {
contentType: "application/json",
body: "",
expectedStatus: http.StatusBadRequest,
expectedBody: `{"errors":[{"message":"request body is empty, but the operation requires non-empty body"}]}`,
},
"invalid json body": {
contentType: "application/json",
body: `{"name":"johndoe`,
expectedStatus: http.StatusBadRequest,
expectedBody: `{"errors":[{"message":"request body contains invalid json: unexpected EOF"}]}`,
},
"skip body validation for not application/json content type": {
contentType: "text/plain",
body: "some",
expectedStatus: http.StatusUnsupportedMediaType, // returned from the actual handler
expectedBody: "",
},
}
doc := loadDocFile(t, "testdata/petstore_1.yml")
params := doc.Analyzer.ParametersFor("addPet")
v := &requestBodyValidator{
next: http.HandlerFunc(handleAddPet),
jsonSelectors: []*regexp.Regexp{contentTypeSelectorRegexJSON},
problemHandler: problemHandlerResponseWriter(),
continueOnProblem: false,
}
for name, tc := range testCases {
t.Run(name, func(t *testing.T) {
var body io.Reader
if tc.body != "" {
body = bytes.NewBufferString(tc.body)
}
req := httptest.NewRequest(http.MethodPost, "/v2/pet", body)
req.Header.Set("Content-Type", tc.contentType)
w := httptest.NewRecorder()
v.ServeHTTP(w, req, params, true)
assert.Equal(t, tc.expectedStatus, w.Code)
assert.Equal(t, tc.expectedBody, w.Body.String())
})
}
}
func handleAddPet(w http.ResponseWriter, req *http.Request) {
type pet struct {
Name string `json:"name"`
PhotoURLs []string `json:"photoUrls"`
}
var p pet
if err := json.NewDecoder(req.Body).Decode(&p); err != nil {
w.WriteHeader(http.StatusUnsupportedMediaType)
return
}
fmt.Fprintf(w, "pet name: %s", p.Name)
}