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package httprange
import (
"context"
"net/http"
"net/http/httptest"
"sync/atomic"
"testing"
"github.com/stretchr/testify/require"
)
func urlValue(url string) atomic.Value {
v := atomic.Value{}
v.Store(url)
return v
}
func TestNewResource(t *testing.T) {
resource := &Resource{
url: urlValue("/some/resource"),
ETag: "etag",
LastModified: "Wed, 21 Oct 2015 07:28:00 GMT",
Size: 1,
}
tests := map[string]struct {
url string
status int
contentRange string
want *Resource
expectedErrMsg string
}{
"status_ok": {
url: "/some/resource",
status: http.StatusOK,
want: resource,
},
"status_partial_content_success": {
url: "/some/resource",
status: http.StatusPartialContent,
contentRange: "bytes 200-1000/67589",
want: &Resource{
url: urlValue("/some/resource"),
ETag: "etag",
LastModified: "Wed, 21 Oct 2015 07:28:00 GMT",
Size: 67589,
},
},
"status_partial_content_invalid_content_range": {
url: "/some/resource",
status: http.StatusPartialContent,
contentRange: "invalid",
expectedErrMsg: "invalid `Content-Range`:",
want: resource,
},
"status_partial_content_content_range_not_a_number": {
url: "/some/resource",
status: http.StatusPartialContent,
contentRange: "bytes 200-1000/notanumber",
expectedErrMsg: "invalid `Content-Range`:",
want: resource,
},
"StatusRequestedRangeNotSatisfiable": {
url: "/some/resource",
status: http.StatusRequestedRangeNotSatisfiable,
expectedErrMsg: ErrRangeRequestsNotSupported.Error(),
want: resource,
},
"not_found": {
url: "/some/resource",
status: http.StatusNotFound,
expectedErrMsg: ErrNotFound.Error(),
want: resource,
},
"invalid_url": {
url: "/%",
expectedErrMsg: "invalid URL escape",
want: resource,
},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
testServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("ETag", tt.want.ETag)
w.Header().Set("Last-Modified", tt.want.LastModified)
w.Header().Set("Content-Range", tt.contentRange)
w.WriteHeader(tt.status)
w.Write([]byte("1"))
}))
defer testServer.Close()
got, err := NewResource(context.Background(), testServer.URL+tt.url)
if tt.expectedErrMsg != "" {
require.Error(t, err)
require.Contains(t, err.Error(), tt.expectedErrMsg)
return
}
require.NoError(t, err)
require.Contains(t, got.URL(), tt.want.URL())
require.Equal(t, tt.want.LastModified, got.LastModified)
require.Equal(t, tt.want.ETag, got.ETag)
require.Equal(t, tt.want.Size, got.Size)
})
}
}
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