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verifier_test.go
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verifier_test.go
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package verifier
import (
"github.com/tenjin/go-sk-postback-verifier/verifiertest"
"testing"
"github.com/stretchr/testify/assert"
)
func TestVerifyPostback(t *testing.T) {
v := NewVerifier()
data30, signature30 := verifiertest.PostbackV30()
data20, signature20 := verifiertest.PostbackV20()
// With v3.0 postback data
err := v.VerifySignature(data30, signature30)
assert.NoError(t, err, "Sample data from Apple should be valid")
// Same but with byte array
b30 := verifiertest.PrepareByteArray(data30)
err = v.VerifySignature(b30, signature30)
assert.NoError(t, err, "Sample data from Apple should be valid")
// With legacy postback data
err = v.VerifySignature(data20, signature20)
assert.Error(t, err, "Legacy postback sample from Apple should not be valid with current verifier")
// Same but with byte array
b20 := verifiertest.PrepareByteArray(data20)
err = v.VerifySignature(b20, signature20)
assert.Error(t, err, "Legacy postback sample from Apple should not be valid with current verifier")
}
func TestVerifyLegacyPostback(t *testing.T) {
v := NewLegacyVerifier()
data30, signature30 := verifiertest.PostbackV30()
data20, signature20 := verifiertest.PostbackV20()
// With v3.0 postback data
err := v.VerifySignature(data30, signature30)
assert.Error(t, err, "Recent sample data should not be verifiable with the legacy verifier")
// Same but with byte array
b30 := verifiertest.PrepareByteArray(data30)
err = v.VerifySignature(b30, signature30)
assert.Error(t, err, "Recent sample data should not be verifiable with the legacy verifier")
// With legacy postback data
err = v.VerifySignature(data20, signature20)
assert.NoError(t, err, "Legacy postback sample from Apple should be valid with the legacy verifier")
// Same but with byte array
b20 := verifiertest.PrepareByteArray(data20)
err = v.VerifySignature(b20, signature20)
assert.NoError(t, err, "Legacy postback sample from Apple should be valid with the legacy verifier")
}
func TestVerifyInvalidPostback(t *testing.T) {
v := NewVerifier()
// Given bad data string array
data, signature := verifiertest.PostbackV30()
data = append(data, "invalid data")
// ErrorSignatureMismatch is returned
err := v.VerifySignature(data, signature)
assert.ErrorIs(t, err, ErrorSignatureMismatch, "Invalid data")
// Given bad data format
dataInt := []int{1, 2, 3}
// ErrorInvalidData is returned
err = v.VerifySignature(dataInt, signature)
assert.ErrorIs(t, err, ErrorInvalidData, "Invalid data")
// Given invalid signature
data, signature = verifiertest.PostbackV30()
signature += "x"
// Error is returned
err = v.VerifySignature(data, signature)
assert.Error(t, err, "Invalid signature")
}