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package aws_msk_iam_v2
import (
"bytes"
"context"
"encoding/json"
"testing"
"time"
"github.com/aws/aws-sdk-go-v2/aws"
"github.com/segmentio/kafka-go/sasl"
"github.com/stretchr/testify/assert"
signer "github.com/aws/aws-sdk-go-v2/aws/signer/v4"
"github.com/aws/aws-sdk-go-v2/credentials"
)
const (
accessKeyId = "ACCESS_KEY"
secretAccessKey = "SECRET_KEY"
)
// using a fixed time allows the signature to be verifiable in a test
var signTime = time.Date(2021, 10, 14, 13, 5, 0, 0, time.UTC)
func TestAwsMskIamMechanism(t *testing.T) {
creds := credentials.NewStaticCredentialsProvider(accessKeyId, secretAccessKey, "")
ctxWithMetadata := func() context.Context {
return sasl.WithMetadata(context.Background(), &sasl.Metadata{
Host: "localhost",
Port: 9092,
})
}
tests := []struct {
description string
ctx func() context.Context
shouldFail bool
}{
{
description: "with metadata",
ctx: ctxWithMetadata,
},
{
description: "without metadata",
ctx: func() context.Context {
return context.Background()
},
shouldFail: true,
},
}
for _, tt := range tests {
t.Run(tt.description, func(t *testing.T) {
ctx := tt.ctx()
mskMechanism := &Mechanism{
Signer: signer.NewSigner(),
Credentials: creds,
Region: "us-east-1",
SignTime: signTime,
}
sess, auth, err := mskMechanism.Start(ctx)
if tt.shouldFail { // if error is expected
if err == nil { // but we don't find one
t.Fatal("error expected")
} else { // but we do find one
return // return early since the remaining assertions are irrelevant
}
} else { // if error is not expected (typical)
if err != nil { // but we do find one
t.Fatal(err)
}
}
if sess != mskMechanism {
t.Error(
"Unexpected session",
"expected", mskMechanism,
"got", sess,
)
}
expectedMap := map[string]string{
"version": "2020_10_22",
"action": "kafka-cluster:Connect",
"host": "localhost",
"user-agent": signUserAgent,
"x-amz-algorithm": "AWS4-HMAC-SHA256",
"x-amz-credential": "ACCESS_KEY/20211014/us-east-1/kafka-cluster/aws4_request",
"x-amz-date": "20211014T130500Z",
"x-amz-expires": "300",
"x-amz-signedheaders": "host",
"x-amz-signature": "6b8d25f9b45b9c7db9da855a49112d80379224153a27fd279c305a5b7940d1a7",
}
expectedAuth, err := json.Marshal(expectedMap)
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(expectedAuth, auth) {
t.Error("Unexpected authentication",
"expected", expectedAuth,
"got", auth,
)
}
})
}
}
func TestDefaultExpiry(t *testing.T) {
expiry := time.Second * 5
testCases := map[string]struct {
Expiry time.Duration
}{
"with default": {Expiry: expiry},
"without default": {},
}
for name, testCase := range testCases {
t.Run(name, func(t *testing.T) {
actual := defaultExpiry(testCase.Expiry)
if testCase.Expiry == 0 {
assert.Equal(t, time.Minute*5, actual)
} else {
assert.Equal(t, expiry, actual)
}
})
}
}
func TestDefaultSignTime(t *testing.T) {
testCases := map[string]struct {
SignTime time.Time
}{
"with default": {SignTime: signTime},
"without default": {},
}
for name, testCase := range testCases {
t.Run(name, func(t *testing.T) {
actual := defaultSignTime(testCase.SignTime)
if testCase.SignTime.IsZero() {
assert.True(t, actual.After(signTime))
} else {
assert.Equal(t, signTime, actual)
}
})
}
}
func TestNewMechanism(t *testing.T) {
region := "us-east-1"
creds := credentials.StaticCredentialsProvider{}
awsCfg := aws.Config{
Region: region,
Credentials: creds,
}
m := NewMechanism(awsCfg)
assert.Equal(t, m.Region, region)
assert.Equal(t, m.Credentials, creds)
}
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