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// Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
//go:build !lambda.norpc
// +build !lambda.norpc
package lambda
import (
"context"
"encoding/json"
"errors"
"os"
"testing"
"time"
"github.com/aws/aws-lambda-go/lambda/messages"
"github.com/aws/aws-lambda-go/lambdacontext"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
type testWrapperHandler func(ctx context.Context, input []byte) (interface{}, error)
func (h testWrapperHandler) Invoke(ctx context.Context, payload []byte) ([]byte, error) {
response, err := h(ctx, payload)
if err != nil {
return nil, err
}
responseBytes, err := json.Marshal(response)
if err != nil {
return nil, err
}
return responseBytes, nil
}
// verify testWrapperHandler implements Handler
var _ Handler = (testWrapperHandler)(nil)
func TestInvoke(t *testing.T) {
srv := NewFunction(testWrapperHandler(
func(ctx context.Context, input []byte) (interface{}, error) {
if deadline, ok := ctx.Deadline(); ok {
return deadline.UnixNano(), nil
}
return nil, errors.New("!?!?!?!?!")
},
))
deadline := time.Now()
var response messages.InvokeResponse
err := srv.Invoke(&messages.InvokeRequest{
Deadline: messages.InvokeRequest_Timestamp{
Seconds: deadline.Unix(),
Nanos: int64(deadline.Nanosecond()),
}}, &response)
assert.NoError(t, err)
var responseValue int64
assert.NoError(t, json.Unmarshal(response.Payload, &responseValue))
assert.Equal(t, deadline.UnixNano(), responseValue)
}
func TestInvokeWithContext(t *testing.T) {
key := struct{}{}
srv := NewFunction(&handlerOptions{
Handler: testWrapperHandler(
func(ctx context.Context, input []byte) (interface{}, error) {
assert.Equal(t, "dummy", ctx.Value(key))
if deadline, ok := ctx.Deadline(); ok {
return deadline.UnixNano(), nil
}
return nil, errors.New("!?!?!?!?!")
}),
baseContext: context.WithValue(context.Background(), key, "dummy"),
})
deadline := time.Now()
var response messages.InvokeResponse
err := srv.Invoke(&messages.InvokeRequest{
Deadline: messages.InvokeRequest_Timestamp{
Seconds: deadline.Unix(),
Nanos: int64(deadline.Nanosecond()),
}}, &response)
assert.NoError(t, err)
var responseValue int64
assert.NoError(t, json.Unmarshal(response.Payload, &responseValue))
assert.Equal(t, deadline.UnixNano(), responseValue)
}
type CustomError struct{}
func (e CustomError) Error() string { return "Something bad happened!" }
func TestCustomError(t *testing.T) {
srv := NewFunction(testWrapperHandler(
func(ctx context.Context, input []byte) (interface{}, error) {
return nil, CustomError{}
},
))
var response messages.InvokeResponse
err := srv.Invoke(&messages.InvokeRequest{}, &response)
assert.NoError(t, err)
assert.Nil(t, response.Payload)
assert.Equal(t, "Something bad happened!", response.Error.Message)
assert.Equal(t, "CustomError", response.Error.Type)
}
type CustomError2 struct{}
func (e *CustomError2) Error() string { return "Something bad happened!" }
func TestCustomErrorRef(t *testing.T) {
srv := NewFunction(testWrapperHandler(
func(ctx context.Context, input []byte) (interface{}, error) {
return nil, &CustomError2{}
},
))
var response messages.InvokeResponse
err := srv.Invoke(&messages.InvokeRequest{}, &response)
assert.NoError(t, err)
assert.Nil(t, response.Payload)
assert.Equal(t, "Something bad happened!", response.Error.Message)
assert.Equal(t, "CustomError2", response.Error.Type)
}
func TestContextPlumbing(t *testing.T) {
srv := NewFunction(testWrapperHandler(
func(ctx context.Context, input []byte) (interface{}, error) {
lc, _ := lambdacontext.FromContext(ctx)
return lc, nil
},
))
var response messages.InvokeResponse
err := srv.Invoke(&messages.InvokeRequest{
CognitoIdentityId: "dummyident",
CognitoIdentityPoolId: "dummypool",
ClientContext: []byte(`{
"Client": {
"app_title": "dummytitle",
"installation_id": "dummyinstallid",
"app_version_code": "dummycode",
"app_package_name": "dummyname"
}
}`),
RequestId: "dummyid",
InvokedFunctionArn: "dummyarn",
}, &response)
assert.NoError(t, err)
assert.NotNil(t, response.Payload)
expected := `
{
"AwsRequestID": "dummyid",
"InvokedFunctionArn": "dummyarn",
"Identity": {
"CognitoIdentityID": "dummyident",
"CognitoIdentityPoolID": "dummypool"
},
"ClientContext": {
"Client": {
"installation_id": "dummyinstallid",
"app_title": "dummytitle",
"app_version_code": "dummycode",
"app_package_name": "dummyname"
},
"env": null,
"custom": null
}
}
`
assert.JSONEq(t, expected, string(response.Payload))
}
func TestXAmznTraceID(t *testing.T) {
type XRayResponse struct {
Env string
Ctx string
}
srv := NewFunction(testWrapperHandler(
func(ctx context.Context, input []byte) (interface{}, error) {
return &XRayResponse{
Env: os.Getenv("_X_AMZN_TRACE_ID"),
Ctx: ctx.Value("x-amzn-trace-id").(string),
}, nil
},
))
sequence := []struct {
Input string
Expected string
}{
{
"",
`{"Env": "", "Ctx": ""}`,
},
{
"dummyid",
`{"Env": "dummyid", "Ctx": "dummyid"}`,
},
{
"",
`{"Env": "", "Ctx": ""}`,
},
{
"123dummyid",
`{"Env": "123dummyid", "Ctx": "123dummyid"}`,
},
{
"",
`{"Env": "", "Ctx": ""}`,
},
{
"",
`{"Env": "", "Ctx": ""}`,
},
{
"567",
`{"Env": "567", "Ctx": "567"}`,
},
{
"hihihi",
`{"Env": "hihihi", "Ctx": "hihihi"}`,
},
}
for i, test := range sequence {
var response messages.InvokeResponse
err := srv.Invoke(&messages.InvokeRequest{XAmznTraceId: test.Input}, &response)
require.NoError(t, err, "failed test sequence[%d]", i)
assert.JSONEq(t, test.Expected, string(response.Payload), "failed test sequence[%d]", i)
}
}