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package matchers
import (
"fmt"
"net/http"
"net/http/httptest"
"github.com/onsi/gomega/format"
"github.com/onsi/gomega/internal/gutil"
"github.com/onsi/gomega/types"
)
type HaveHTTPBodyMatcher struct {
Expected interface{}
cachedBody []byte
}
func (matcher *HaveHTTPBodyMatcher) Match(actual interface{}) (bool, error) {
body, err := matcher.body(actual)
if err != nil {
return false, err
}
switch e := matcher.Expected.(type) {
case string:
return (&EqualMatcher{Expected: e}).Match(string(body))
case []byte:
return (&EqualMatcher{Expected: e}).Match(body)
case types.GomegaMatcher:
return e.Match(body)
default:
return false, fmt.Errorf("HaveHTTPBody matcher expects string, []byte, or GomegaMatcher. Got:\n%s", format.Object(matcher.Expected, 1))
}
}
func (matcher *HaveHTTPBodyMatcher) FailureMessage(actual interface{}) (message string) {
body, err := matcher.body(actual)
if err != nil {
return fmt.Sprintf("failed to read body: %s", err)
}
switch e := matcher.Expected.(type) {
case string:
return (&EqualMatcher{Expected: e}).FailureMessage(string(body))
case []byte:
return (&EqualMatcher{Expected: e}).FailureMessage(body)
case types.GomegaMatcher:
return e.FailureMessage(body)
default:
return fmt.Sprintf("HaveHTTPBody matcher expects string, []byte, or GomegaMatcher. Got:\n%s", format.Object(matcher.Expected, 1))
}
}
func (matcher *HaveHTTPBodyMatcher) NegatedFailureMessage(actual interface{}) (message string) {
body, err := matcher.body(actual)
if err != nil {
return fmt.Sprintf("failed to read body: %s", err)
}
switch e := matcher.Expected.(type) {
case string:
return (&EqualMatcher{Expected: e}).NegatedFailureMessage(string(body))
case []byte:
return (&EqualMatcher{Expected: e}).NegatedFailureMessage(body)
case types.GomegaMatcher:
return e.NegatedFailureMessage(body)
default:
return fmt.Sprintf("HaveHTTPBody matcher expects string, []byte, or GomegaMatcher. Got:\n%s", format.Object(matcher.Expected, 1))
}
}
// body returns the body. It is cached because once we read it in Match()
// the Reader is closed and it is not readable again in FailureMessage()
// or NegatedFailureMessage()
func (matcher *HaveHTTPBodyMatcher) body(actual interface{}) ([]byte, error) {
if matcher.cachedBody != nil {
return matcher.cachedBody, nil
}
body := func(a *http.Response) ([]byte, error) {
if a.Body != nil {
defer a.Body.Close()
var err error
matcher.cachedBody, err = gutil.ReadAll(a.Body)
if err != nil {
return nil, fmt.Errorf("error reading response body: %w", err)
}
}
return matcher.cachedBody, nil
}
switch a := actual.(type) {
case *http.Response:
return body(a)
case *httptest.ResponseRecorder:
return body(a.Result())
default:
return nil, fmt.Errorf("HaveHTTPBody matcher expects *http.Response or *httptest.ResponseRecorder. Got:\n%s", format.Object(actual, 1))
}
}
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