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// Copyright 2017 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

// Contains the tests associated with the Whisper protocol Envelope object.

package whisperv6

import (
    mrand "math/rand"
    "testing"

    "github.com/ethereum/go-ethereum/crypto"
)

func TestEnvelopeOpenAcceptsOnlyOneKeyTypeInFilter(t *testing.T) {
    symKey := make([]byte, aesKeyLength)
    mrand.Read(symKey)

    asymKey, err := crypto.GenerateKey()
    if err != nil {
        t.Fatalf("failed GenerateKey with seed %d: %s.", seed, err)
    }

    params := MessageParams{
        PoW:      0.01,
        WorkTime: 1,
        TTL:      uint32(mrand.Intn(1024)),
        Payload:  make([]byte, 50),
        KeySym:   symKey,
        Dst:      nil,
    }

    mrand.Read(params.Payload)

    msg, err := NewSentMessage(&params)
    if err != nil {
        t.Fatalf("failed to create new message with seed %d: %s.", seed, err)
    }

    e, err := msg.Wrap(&params)
    if err != nil {
        t.Fatalf("Failed to Wrap the message in an envelope with seed %d: %s", seed, err)
    }

    f := Filter{KeySym: symKey, KeyAsym: asymKey}

    decrypted := e.Open(&f)
    if decrypted != nil {
        t.Fatalf("Managed to decrypt a message with an invalid filter, seed %d", seed)
    }
}