vendor/github.com/apigee-labs/transicator/common/encoding_test.go

/*
Copyright 2016 The Transicator Authors

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License 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 common

import (
	"bytes"
	"io/ioutil"
	"os"
	"strconv"
	"testing"
	"testing/quick"

	. "github.com/onsi/ginkgo"
	"github.com/onsi/ginkgo/reporters"
	. "github.com/onsi/gomega"
)

func TestEncoding(t *testing.T) {
	RegisterFailHandler(Fail)
	junitReporter := reporters.NewJUnitReporter("../test-reports/common.xml")
	RunSpecsWithDefaultAndCustomReporters(t, "Encoding suite", []Reporter{junitReporter})
}

var _ = Describe("Encoding Tests", func() {
	It("Parse snapshot", func() {
		// Parse file from JSON, then un-parse, and result should be same JSON
		s := readFile("./testfiles/snapshot.json")
		ss, err := UnmarshalSnapshot(s)
		Expect(err).Should(Succeed())
		ms := ss.Marshal()
		Expect(ms).Should(MatchJSON(s))

		// Re-marshal using protobuf, then re-marshal, and result should
		// still be same JSON.
		buf := &bytes.Buffer{}
		err = ss.MarshalProto(buf)
		Expect(err).Should(Succeed())

		ss2, err := UnmarshalSnapshotProto(buf)
		Expect(err).Should(Succeed())
		ms2 := ss2.Marshal()
		Expect(ms2).Should(MatchJSON(s))
	})

	It("Parse change list", func() {
		s := readFile("./testfiles/changelist.json")
		ss, err := UnmarshalChangeList(s)
		Expect(err).Should(Succeed())

		ms := ss.Marshal()
		Expect(ms).Should(MatchJSON(s))
	})

	It("Encode changes", func() {
		s := readFile("./testfiles/changelist.json")
		ss, err := UnmarshalChangeList(s)
		Expect(err).Should(Succeed())

		for _, change := range ss.Changes {
			proto := change.MarshalProto()
			nc, err := UnmarshalChangeProto(proto)
			Expect(err).Should(Succeed())
			Expect(nc.Sequence).Should(Equal(change.Sequence))
			Expect(nc.ChangeSequence).Should(Equal(change.ChangeSequence))
			Expect(nc.CommitSequence).Should(Equal(change.CommitSequence))
			Expect(nc.CommitIndex).Should(Equal(change.CommitIndex))
			Expect(nc.TransactionID).Should(Equal(change.TransactionID))
			Expect(nc.Operation).Should(Equal(change.Operation))
			Expect(nc.Table).Should(Equal(change.Table))
			Expect(nc.NewRow).Should(Equal(change.NewRow))
			Expect(nc.OldRow).Should(Equal(change.OldRow))
		}
	})

	It("Encode change", func() {
		err := quick.Check(func(iv int64, sv string, bv bool) bool {
			nr := make(map[string]*ColumnVal)
			nr["iv"] = &ColumnVal{
				Value: iv,
			}
			nr["sv"] = &ColumnVal{
				Value: sv,
			}
			nr["bv"] = &ColumnVal{
				Value: bv,
			}
			c := &Change{
				NewRow: Row(nr),
			}

			// Protobufs should come out totally the same both ways
			buf := c.MarshalProto()
			br, err := UnmarshalChangeProto(buf)
			Expect(err).Should(Succeed())
			Expect(br.NewRow["iv"].Value).Should(Equal(iv))
			Expect(br.NewRow["sv"].Value).Should(Equal(sv))
			Expect(br.NewRow["bv"].Value).Should(Equal(bv))

			// JSON should see everything turned in to a string
			buf = c.Marshal()
			br, err = UnmarshalChange(buf)
			Expect(err).Should(Succeed())
			isv := strconv.FormatInt(iv, 10)
			Expect(br.NewRow["iv"].Value).Should(Equal(isv))
			Expect(br.NewRow["sv"].Value).Should(Equal(sv))
			bsv := strconv.FormatBool(bv)
			Expect(br.NewRow["bv"].Value).Should(Equal(bsv))
			return true
		}, nil)
		Expect(err).Should(Succeed())
	})
})

func readFile(name string) []byte {
	f, err := os.Open(name)
	Expect(err).Should(Succeed())
	defer f.Close()

	buf, err := ioutil.ReadAll(f)
	Expect(err).Should(Succeed())
	return buf
}