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package pipewire_test
import (
"encoding"
"encoding/json"
"reflect"
"testing"
)
type encodingTestCases[V any, S interface {
encoding.BinaryMarshaler
encoding.BinaryUnmarshaler
*V
}] []struct {
// Uninterpreted name of subtest.
name string
// Encoded data.
wantData []byte
// Value corresponding to wantData.
value V
// Expected decoding error. Skips encoding check if non-nil.
wantErr error
}
// run runs all test cases as subtests of [testing.T].
func (testCases encodingTestCases[V, S]) run(t *testing.T) {
t.Helper()
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
t.Parallel()
t.Run("decode", func(t *testing.T) {
t.Parallel()
var value V
if err := S(&value).UnmarshalBinary(tc.wantData); err != nil {
t.Fatalf("UnmarshalBinary: error = %v", err)
}
if !reflect.DeepEqual(&value, &tc.value) {
t.Fatalf("UnmarshalBinary:\n%s\nwant\n%s", mustMarshalJSON(value), mustMarshalJSON(tc.value))
}
})
t.Run("encode", func(t *testing.T) {
t.Parallel()
if gotData, err := S(&tc.value).MarshalBinary(); err != nil {
t.Fatalf("MarshalBinary: error = %v", err)
} else if string(gotData) != string(tc.wantData) {
t.Fatalf("MarshalBinary: %#v, want %#v", gotData, tc.wantData)
}
})
})
}
}
// mustMarshalJSON calls [json.Marshal] and returns the result.
func mustMarshalJSON(v any) string {
if data, err := json.Marshal(v); err != nil {
panic(err)
} else {
return string(data)
}
}
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