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request_test.go
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request_test.go
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package amqprpc
import (
"context"
"fmt"
"testing"
amqp "github.com/rabbitmq/amqp091-go"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestRequest(t *testing.T) {
url := "amqp://guest:guest@localhost:5672/"
s := NewServer(url)
s.Bind(DirectBinding("myqueue", func(_ context.Context, rw *ResponseWriter, d amqp.Delivery) {
fmt.Fprintf(rw, "Got message: %s", d.Body)
}))
stop := startAndWait(s)
defer stop()
client := NewClient(url)
defer client.Stop()
assert.NotNil(t, client, "client exist")
// Test simple form.
request := NewRequest().
WithRoutingKey("myqueue").
WithResponse(true).
WithBody("hello request")
response, err := client.Send(request)
require.NoError(t, err, "no errors sending request")
assert.Equal(t, []byte("Got message: hello request"), response.Body, "correct body returned")
// Test with exchange, headers, content type, correlation ID and raw body.
request = NewRequest().
WithRoutingKey("myqueue").
WithExchange("").
WithHeaders(amqp.Table{}).
WithResponse(false).
WithContentType("application/json").
WithCorrelationID("this-is-unique").
WithBody(`{"foo":"bar"}`)
response, err = client.Send(request)
require.NoError(t, err, "no errors sending request")
assert.Nil(t, response, "no body returned when not waiting for replies")
request = NewRequest().
WithRoutingKey("myqueue").
WithBody("original message").
AddMiddleware(myMiddle)
response, err = client.Send(request)
require.NoError(t, err, "no errors sending request")
assert.NotNil(t, response.Body, "body exist")
assert.Equal(t, []byte("Got message: middleware message"), response.Body, "correct body returned")
}
func TestRequestWriting(t *testing.T) {
r := NewRequest().WithRoutingKey("foo")
assert.Empty(t, r.Publishing.Body, "no body at start")
assert.Empty(t, r.Publishing.Headers, "no headers at start")
t.Run("body writing", func(tt *testing.T) {
fmt.Fprintf(r, "my body is foo")
assert.Equal(tt, []byte("my body is foo"), r.Publishing.Body, "correct body written")
fmt.Fprintf(r, "\nand bar")
assert.Equal(tt, []byte("my body is foo\nand bar"), r.Publishing.Body, "correct body written")
r.WithBody("overwrite")
assert.Equal(tt, []byte("overwrite"), r.Publishing.Body, "correct body written")
fmt.Fprintf(r, "written")
assert.Equal(tt, []byte("overwritewritten"), r.Publishing.Body, "correct body written")
})
t.Run("header writing", func(tt *testing.T) {
r.WriteHeader("foo", "bar")
assert.Equal(tt, amqp.Table{"foo": "bar"}, r.Publishing.Headers, "correct headers written")
r.WriteHeader("baz", "baa")
assert.Equal(tt, amqp.Table{"foo": "bar", "baz": "baa"}, r.Publishing.Headers, "correct headers written")
r.WithHeaders(amqp.Table{"overwritten": "headers"})
assert.Equal(tt, amqp.Table{"overwritten": "headers"}, r.Publishing.Headers, "correct headers written")
r.WriteHeader("baz", "foo")
assert.Equal(tt, amqp.Table{"overwritten": "headers", "baz": "foo"}, r.Publishing.Headers, "correct headers written")
})
}
func TestRequestContext(t *testing.T) {
type ctxtype string
ctxKey := ctxtype("charger")
changeThroughMiddleware := false
myMiddleFunc := func(next SendFunc) SendFunc {
return func(r *Request) (*amqp.Delivery, error) {
var ok bool
if changeThroughMiddleware, ok = r.Context.Value(ctxKey).(bool); !ok {
require.FailNow(t, "failed to assert context")
}
return next(r)
}
}
ctx := context.WithValue(context.Background(), ctxKey, true)
r := NewRequest().WithContext(ctx)
c := NewClient("").AddMiddleware(myMiddleFunc)
c.Sender = func(_ *Request) (*amqp.Delivery, error) {
// Usually i would send something...
return &amqp.Delivery{}, nil
}
_, err := c.Send(r)
require.NoError(t, err)
assert.True(t, changeThroughMiddleware, "requesst changed through middleware")
}
func myMiddle(next SendFunc) SendFunc {
return func(r *Request) (*amqp.Delivery, error) {
r.Publishing.Body = []byte("middleware message")
return next(r)
}
}