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package varlink
// tests with access to internals
import (
"context"
"fmt"
"strings"
"testing"
)
func expect(t *testing.T, expected string, returned string) {
if strings.Compare(returned, expected) != 0 {
t.Fatalf("Expected(%d): `%s`\nGot(%d): `%s`\n",
len(expected), expected,
len(returned), strings.Replace(returned, "\000", "`+\"\\000\"+`", -1))
}
}
type readWriterContextFunc func(context.Context, []byte) (int, error)
func (wcf readWriterContextFunc) Write(ctx context.Context, in []byte) (int, error) {
return wcf(ctx, in)
}
func (wcf readWriterContextFunc) Read(context.Context, []byte) (int, error) {
return 0, nil
}
func (wcf readWriterContextFunc) ReadBytes(context.Context, byte) ([]byte, error) {
return nil, nil
}
func TestService(t *testing.T) {
service, _ := NewService(
"Varlink",
"Varlink Test",
"1",
"https://github.com/varlink/go/varlink",
)
t.Run("ZeroMessage", func(t *testing.T) {
wf := readWriterContextFunc(func(ctx context.Context, in []byte) (int, error) {
return 0, nil
})
if err := service.HandleMessage(context.Background(), wf, []byte{0}); err == nil {
t.Fatal("HandleMessage returned non-error")
}
})
t.Run("InvalidJson", func(t *testing.T) {
wf := readWriterContextFunc(func(ctx context.Context, in []byte) (int, error) {
return 0, nil
})
msg := []byte(`{"method":"foo.GetInterfaceDescription" fdgdfg}`)
if err := service.HandleMessage(context.Background(), wf, msg); err == nil {
t.Fatal("HandleMessage returned no error on invalid json")
}
})
t.Run("WrongInterface", func(t *testing.T) {
var written []byte
wf := readWriterContextFunc(func(ctx context.Context, in []byte) (int, error) {
written = append(written, in...)
return len(in), nil
})
msg := []byte(`{"method":"foo.GetInterfaceDescription"}`)
if err := service.HandleMessage(context.Background(), wf, msg); err != nil {
t.Fatal("HandleMessage returned error on wrong interface")
}
expect(t, `{"parameters":{"interface":"foo"},"error":"org.varlink.service.InterfaceNotFound"}`+"\000",
string(written))
})
t.Run("InvalidMethod", func(t *testing.T) {
var written []byte
wf := readWriterContextFunc(func(ctx context.Context, in []byte) (int, error) {
written = append(written, in...)
return len(in), nil
})
msg := []byte(`{"method":"InvalidMethod"}`)
if err := service.HandleMessage(context.Background(), wf, msg); err != nil {
t.Fatal("HandleMessage returned error on invalid method")
}
expect(t, `{"parameters":{"parameter":"method"},"error":"org.varlink.service.InvalidParameter"}`+"\000",
string(written))
})
t.Run("WrongMethod", func(t *testing.T) {
var written []byte
wf := readWriterContextFunc(func(ctx context.Context, in []byte) (int, error) {
written = append(written, in...)
return len(in), nil
})
msg := []byte(`{"method":"org.varlink.service.WrongMethod"}`)
if err := service.HandleMessage(context.Background(), wf, msg); err != nil {
t.Fatal("HandleMessage returned error on wrong method")
}
expect(t, `{"parameters":{"method":"WrongMethod"},"error":"org.varlink.service.MethodNotFound"}`+"\000",
string(written))
})
t.Run("GetInterfaceDescriptionNullParameters", func(t *testing.T) {
var written []byte
wf := readWriterContextFunc(func(ctx context.Context, in []byte) (int, error) {
written = append(written, in...)
return len(in), nil
})
msg := []byte(`{"method":"org.varlink.service.GetInterfaceDescription","parameters": null}`)
if err := service.HandleMessage(context.Background(), wf, msg); err != nil {
t.Fatalf("HandleMessage returned error: %v", err)
}
expect(t, `{"parameters":{"parameter":"parameters"},"error":"org.varlink.service.InvalidParameter"}`+"\000",
string(written))
})
t.Run("GetInterfaceDescriptionNoInterface", func(t *testing.T) {
var written []byte
wf := readWriterContextFunc(func(ctx context.Context, in []byte) (int, error) {
written = append(written, in...)
return len(in), nil
})
msg := []byte(`{"method":"org.varlink.service.GetInterfaceDescription","parameters":{}}`)
if err := service.HandleMessage(context.Background(), wf, msg); err != nil {
t.Fatalf("HandleMessage returned error: %v", err)
}
expect(t, `{"parameters":{"parameter":"interface"},"error":"org.varlink.service.InvalidParameter"}`+"\000",
string(written))
})
t.Run("GetInterfaceDescriptionWrongInterface", func(t *testing.T) {
var written []byte
wf := readWriterContextFunc(func(ctx context.Context, in []byte) (int, error) {
written = append(written, in...)
return len(in), nil
})
msg := []byte(`{"method":"org.varlink.service.GetInterfaceDescription","parameters":{"interface":"foo"}}`)
if err := service.HandleMessage(context.Background(), wf, msg); err != nil {
t.Fatalf("HandleMessage returned error: %v", err)
}
expect(t, `{"parameters":{"parameter":"interface"},"error":"org.varlink.service.InvalidParameter"}`+"\000",
string(written))
})
t.Run("GetInterfaceDescription", func(t *testing.T) {
var written []byte
wf := readWriterContextFunc(func(ctx context.Context, in []byte) (int, error) {
written = append(written, in...)
return len(in), nil
})
msg := []byte(`{"method":"org.varlink.service.GetInterfaceDescription","parameters":{"interface":"org.varlink.service"}}`)
if err := service.HandleMessage(context.Background(), wf, msg); err != nil {
t.Fatalf("HandleMessage returned error: %v", err)
}
expect(t, `{"parameters":{"description":"# The Varlink Service Interface is provided by every varlink service. It\n# describes the service and the interfaces it implements.\ninterface org.varlink.service\n\n# Get a list of all the interfaces a service provides and information\n# about the implementation.\nmethod GetInfo() -\u003e (\n vendor: string,\n product: string,\n version: string,\n url: string,\n interfaces: []string\n)\n\n# Get the description of an interface that is implemented by this service.\nmethod GetInterfaceDescription(interface: string) -\u003e (description: string)\n\n# The requested interface was not found.\nerror InterfaceNotFound (interface: string)\n\n# The requested method was not found\nerror MethodNotFound (method: string)\n\n# The interface defines the requested method, but the service does not\n# implement it.\nerror MethodNotImplemented (method: string)\n\n# One of the passed parameters is invalid.\nerror InvalidParameter (parameter: string)"}}`+"\000",
string(written))
})
t.Run("GetInfo", func(t *testing.T) {
var written []byte
wf := readWriterContextFunc(func(ctx context.Context, in []byte) (int, error) {
written = append(written, in...)
return len(in), nil
})
msg := []byte(`{"method":"org.varlink.service.GetInfo"}`)
if err := service.HandleMessage(context.Background(), wf, msg); err != nil {
t.Fatalf("HandleMessage returned error: %v", err)
}
expect(t, `{"parameters":{"vendor":"Varlink","product":"Varlink Test","version":"1","url":"https://github.com/varlink/go/varlink","interfaces":["org.varlink.service"]}}`+"\000",
string(written))
})
}
type VarlinkInterface struct{}
func (s *VarlinkInterface) VarlinkDispatch(ctx context.Context, call Call, methodname string) error {
switch methodname {
case "Ping":
if !call.WantsMore() {
return fmt.Errorf("More flag not passed")
}
if call.IsOneway() {
return fmt.Errorf("OneShot flag set")
}
call.Continues = true
if err := call.Reply(ctx, nil); err != nil {
return err
}
if err := call.Reply(ctx, nil); err != nil {
return err
}
call.Continues = false
if err := call.Reply(ctx, nil); err != nil {
return err
}
return nil
case "PingError":
return call.ReplyError(ctx, "org.example.test.PingError", nil)
}
call.Continues = true
if err := call.Reply(ctx, nil); err == nil {
return fmt.Errorf("call.Reply did not fail for Continues/More mismatch")
}
call.Continues = false
if err := call.ReplyError(ctx, "WrongName", nil); err == nil {
return fmt.Errorf("call.ReplyError accepted invalid error name")
}
if err := call.ReplyError(ctx, "org.varlink.service.MethodNotImplemented", nil); err == nil {
return fmt.Errorf("call.ReplyError accepted org.varlink.service error")
}
return call.ReplyMethodNotImplemented(ctx, methodname)
}
func (s *VarlinkInterface) VarlinkGetName() string {
return `org.example.test`
}
func (s *VarlinkInterface) VarlinkGetDescription() string {
return "#"
}
func TestMoreService(t *testing.T) {
newTestInterface := new(VarlinkInterface)
service, _ := NewService(
"Varlink",
"Varlink Test",
"1",
"https://github.com/varlink/go/varlink",
)
if err := service.RegisterInterface(newTestInterface); err != nil {
t.Fatalf("Couldn't register service: %v", err)
}
t.Run("MethodNotImplemented", func(t *testing.T) {
var written []byte
wf := readWriterContextFunc(func(ctx context.Context, in []byte) (int, error) {
written = append(written, in...)
return len(in), nil
})
msg := []byte(`{"method":"org.example.test.Pingf"}`)
if err := service.HandleMessage(context.Background(), wf, msg); err != nil {
t.Fatalf("HandleMessage returned error: %v", err)
}
expect(t, `{"parameters":{"method":"Pingf"},"error":"org.varlink.service.MethodNotImplemented"}`+"\000",
string(written))
})
t.Run("PingError", func(t *testing.T) {
var written []byte
wf := readWriterContextFunc(func(ctx context.Context, in []byte) (int, error) {
written = append(written, in...)
return len(in), nil
})
msg := []byte(`{"method":"org.example.test.PingError", "more" : true}`)
if err := service.HandleMessage(context.Background(), wf, msg); err != nil {
t.Fatalf("HandleMessage returned error: %v", err)
}
expect(t, `{"error":"org.example.test.PingError"}`+"\000",
string(written))
})
t.Run("MoreTest", func(t *testing.T) {
var written []byte
wf := readWriterContextFunc(func(ctx context.Context, in []byte) (int, error) {
written = append(written, in...)
return len(in), nil
})
msg := []byte(`{"method":"org.example.test.Ping", "more" : true}`)
if err := service.HandleMessage(context.Background(), wf, msg); err != nil {
t.Fatalf("HandleMessage returned error: %v", err)
}
expect(t, `{"continues":true}`+"\000"+`{"continues":true}`+"\000"+`{}`+"\000",
string(written))
})
}
|
