/*
# Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License").
# You may not use this file except in compliance with the License.
# A copy of the License is located at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# or in the "license" file accompanying this file. This file is distributed
# on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
# express or implied. See the License for the specific language governing
# permissions and limitations under the License.
#
*/

package forex

import (
	"encoding/json"
	"github.com/google/uuid"
	"github.com/hyperledger/fabric/common/util"
	"github.com/hyperledger/fabric/core/chaincode/shim"
	"github.com/stretchr/testify/assert"
	"strconv"
	"testing"
)

func TestForex(t *testing.T) {
	stub := shim.NewMockStub("forex", new(ForexChaincode))
	uuid := uuid.New().String()

	const RATE = "0.88"
	const BASECURRENCY = "USD"
	const COUNTERCURRENCY = "GBP"

	stringArgs := []string{"createUpdateForexPair", BASECURRENCY, COUNTERCURRENCY, RATE}
	args := util.ArrayToChaincodeArgs(stringArgs)

	response := stub.MockInvoke(uuid, args)

	assert.EqualValues(t, shim.OK, response.GetStatus(), "failed to execute invocation")

	stringArgs = []string{"getForexPair", BASECURRENCY, COUNTERCURRENCY}
	args = util.ArrayToChaincodeArgs(stringArgs)

	response = stub.MockInvoke(uuid, args)
	assert.EqualValues(t, shim.OK, response.GetStatus(), "failed to execute invocation")

	responseForex := &forex{}
	err := json.Unmarshal(response.GetPayload(), responseForex)

	if err != nil {
		panic(err)
	}

	rateAsFloat, _ := strconv.ParseFloat(RATE, 64)

	assert.Equal(t, rateAsFloat, responseForex.Rate, "rate mismatch")

}