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// Copyright 2020 New Relic Corporation. All rights reserved.
// SPDX-License-Identifier: Apache-2.0
package cat
import (
"encoding/json"
"testing"
)
func TestAppDataRoundTrip(t *testing.T) {
for _, test := range []struct {
json string
appData AppDataHeader
}{
{
json: `["xpid","txn",1,2,4096,"guid",false]`,
appData: AppDataHeader{
CrossProcessID: "xpid",
TransactionName: "txn",
QueueTimeInSeconds: 1.0,
ResponseTimeInSeconds: 2.0,
ContentLength: 4096,
TransactionGUID: "guid",
},
},
} {
// Test unmarshalling.
appData := &AppDataHeader{}
if err := json.Unmarshal([]byte(test.json), appData); err != nil {
t.Errorf("given %s: error expected to be nil; got %v", test.json, err)
}
if test.appData.CrossProcessID != appData.CrossProcessID {
t.Errorf("given %s: CrossProcessID expected to be %s; got %s", test.json, test.appData.CrossProcessID, appData.CrossProcessID)
}
if test.appData.TransactionName != appData.TransactionName {
t.Errorf("given %s: TransactionName expected to be %s; got %s", test.json, test.appData.TransactionName, appData.TransactionName)
}
if test.appData.QueueTimeInSeconds != appData.QueueTimeInSeconds {
t.Errorf("given %s: QueueTimeInSeconds expected to be %f; got %f", test.json, test.appData.QueueTimeInSeconds, appData.QueueTimeInSeconds)
}
if test.appData.ResponseTimeInSeconds != appData.ResponseTimeInSeconds {
t.Errorf("given %s: ResponseTimeInSeconds expected to be %f; got %f", test.json, test.appData.ResponseTimeInSeconds, appData.ResponseTimeInSeconds)
}
if test.appData.ContentLength != appData.ContentLength {
t.Errorf("given %s: ContentLength expected to be %d; got %d", test.json, test.appData.ContentLength, appData.ContentLength)
}
if test.appData.TransactionGUID != appData.TransactionGUID {
t.Errorf("given %s: TransactionGUID expected to be %s; got %s", test.json, test.appData.TransactionGUID, appData.TransactionGUID)
}
// Test marshalling.
data, err := json.Marshal(&test.appData)
if err != nil {
t.Errorf("given %s: error expected to be nil; got %v", test.json, err)
}
if string(data) != test.json {
t.Errorf("given %s: unexpected JSON %s", test.json, string(data))
}
}
}
func TestAppDataUnmarshal(t *testing.T) {
// Test error cases where we get a generic error from the JSON package.
for _, input := range []string{
// Basic malformed JSON test: beyond this, we're not going to unit test the
// Go standard library's JSON package.
``,
} {
appData := &AppDataHeader{}
if err := json.Unmarshal([]byte(input), appData); err == nil {
t.Errorf("given %s: error expected to be non-nil; got nil", input)
}
}
// Test error cases where a specific variable is returned.
for _, tc := range []struct {
input string
err error
}{
// Unexpected JSON types.
{`false`, errInvalidAppDataJSON},
{`true`, errInvalidAppDataJSON},
{`1234`, errInvalidAppDataJSON},
{`{}`, errInvalidAppDataJSON},
{`""`, errInvalidAppDataJSON},
// Invalid data types for each field in turn.
{`[0,"txn",1.0,2.0,4096,"guid",false]`, errInvalidAppDataCrossProcessID},
{`["xpid",0,1.0,2.0,4096,"guid",false]`, errInvalidAppDataTransactionName},
{`["xpid","txn","queue",2.0,4096,"guid",false]`, errInvalidAppDataQueueTimeInSeconds},
{`["xpid","txn",1.0,"response",4096,"guid",false]`, errInvalidAppDataResponseTimeInSeconds},
{`["xpid","txn",1.0,2.0,"content length","guid",false]`, errInvalidAppDataContentLength},
{`["xpid","txn",1.0,2.0,4096,0,false]`, errInvalidAppDataTransactionGUID},
} {
appData := &AppDataHeader{}
if err := json.Unmarshal([]byte(tc.input), appData); err != tc.err {
t.Errorf("given %s: error expected to be %v; got %v", tc.input, tc.err, err)
}
}
// Test error cases where the incorrect number of elements was provided.
for _, input := range []string{
`[]`,
`[1,2,3,4,5,6]`,
} {
appData := &AppDataHeader{}
err := json.Unmarshal([]byte(input), appData)
if _, ok := err.(errUnexpectedArraySize); !ok {
t.Errorf("given %s: error expected to be errUnexpectedArraySize; got %v", input, err)
}
}
}
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