Command gencodec generates marshaling methods for Go struct types.
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gencodec/internal/tests/omitempty/input_test.go

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// Copyright 2017 Felix Lange <fjl@twurst.com>.
// Use of this source code is governed by the MIT license,
// which can be found in the LICENSE file.
package omitempty
import (
"encoding/json"
"testing"
)
func TestOmitemptyJSON(t *testing.T) {
want := `{}`
out, err := json.Marshal(new(X))
if err != nil {
t.Fatal(err)
}
if string(out) != want {
t.Fatalf("got %#q, want %#q", string(out), want)
}
}