ussd/internal/http/http_test.go

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package http
import (
"bytes"
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"context"
"errors"
"io"
"net/http"
"net/http/httptest"
"net/url"
"strings"
"testing"
"git.defalsify.org/vise.git/engine"
"git.grassecon.net/urdt/ussd/internal/handlers"
"git.grassecon.net/urdt/ussd/internal/mocks/httpmocks"
)
// invalidRequestType is a custom type to test invalid request scenarios
type invalidRequestType struct{}
// errorReader is a helper type that always returns an error when Read is called
type errorReader struct{}
func (e *errorReader) Read(p []byte) (n int, err error) {
return 0, errors.New("read error")
}
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func TestNewATSessionHandler(t *testing.T) {
mockHandler := &httpmocks.MockRequestHandler{}
ash := NewATSessionHandler(mockHandler)
if ash == nil {
t.Fatal("NewATSessionHandler returned nil")
}
if ash.SessionHandler == nil {
t.Fatal("SessionHandler is nil")
}
}
func TestATSessionHandler_ServeHTTP(t *testing.T) {
tests := []struct {
name string
setupMocks func(*httpmocks.MockRequestHandler, *httpmocks.MockRequestParser, *httpmocks.MockEngine)
formData url.Values
expectedStatus int
expectedBody string
}{
{
name: "Successful request",
setupMocks: func(mh *httpmocks.MockRequestHandler, mrp *httpmocks.MockRequestParser, me *httpmocks.MockEngine) {
mrp.GetSessionIdFunc = func(rq any) (string, error) {
req := rq.(*http.Request)
return req.FormValue("phoneNumber"), nil
}
mrp.GetInputFunc = func(rq any) ([]byte, error) {
req := rq.(*http.Request)
text := req.FormValue("text")
parts := strings.Split(text, "*")
return []byte(parts[len(parts)-1]), nil
}
mh.ProcessFunc = func(rqs handlers.RequestSession) (handlers.RequestSession, error) {
rqs.Continue = true
rqs.Engine = me
return rqs, nil
}
mh.GetConfigFunc = func() engine.Config { return engine.Config{} }
mh.GetRequestParserFunc = func() handlers.RequestParser { return mrp }
mh.OutputFunc = func(rs handlers.RequestSession) (handlers.RequestSession, error) { return rs, nil }
mh.ResetFunc = func(rs handlers.RequestSession) (handlers.RequestSession, error) { return rs, nil }
me.WriteResultFunc = func(context.Context, io.Writer) (int, error) { return 0, nil }
},
formData: url.Values{
"phoneNumber": []string{"+1234567890"},
"text": []string{"1*2*3"},
},
expectedStatus: http.StatusOK,
expectedBody: "CON ",
},
{
name: "GetSessionId error",
setupMocks: func(mh *httpmocks.MockRequestHandler, mrp *httpmocks.MockRequestParser, me *httpmocks.MockEngine) {
mrp.GetSessionIdFunc = func(rq any) (string, error) {
return "", errors.New("no phone number found")
}
mh.GetConfigFunc = func() engine.Config { return engine.Config{} }
mh.GetRequestParserFunc = func() handlers.RequestParser { return mrp }
},
formData: url.Values{
"text": []string{"1*2*3"},
},
expectedStatus: http.StatusBadRequest,
expectedBody: "",
},
{
name: "GetInput error",
setupMocks: func(mh *httpmocks.MockRequestHandler, mrp *httpmocks.MockRequestParser, me *httpmocks.MockEngine) {
mrp.GetSessionIdFunc = func(rq any) (string, error) {
req := rq.(*http.Request)
return req.FormValue("phoneNumber"), nil
}
mrp.GetInputFunc = func(rq any) ([]byte, error) {
return nil, errors.New("no input found")
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}
mh.GetConfigFunc = func() engine.Config { return engine.Config{} }
mh.GetRequestParserFunc = func() handlers.RequestParser { return mrp }
},
formData: url.Values{
"phoneNumber": []string{"+1234567890"},
},
expectedStatus: http.StatusBadRequest,
expectedBody: "",
},
{
name: "Process error",
setupMocks: func(mh *httpmocks.MockRequestHandler, mrp *httpmocks.MockRequestParser, me *httpmocks.MockEngine) {
mrp.GetSessionIdFunc = func(rq any) (string, error) {
req := rq.(*http.Request)
return req.FormValue("phoneNumber"), nil
}
mrp.GetInputFunc = func(rq any) ([]byte, error) {
req := rq.(*http.Request)
text := req.FormValue("text")
parts := strings.Split(text, "*")
return []byte(parts[len(parts)-1]), nil
}
mh.ProcessFunc = func(rqs handlers.RequestSession) (handlers.RequestSession, error) {
return rqs, handlers.ErrStorage
}
mh.GetConfigFunc = func() engine.Config { return engine.Config{} }
mh.GetRequestParserFunc = func() handlers.RequestParser { return mrp }
},
formData: url.Values{
"phoneNumber": []string{"+1234567890"},
"text": []string{"1*2*3"},
},
expectedStatus: http.StatusInternalServerError,
expectedBody: "",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
mockHandler := &httpmocks.MockRequestHandler{}
mockRequestParser := &httpmocks.MockRequestParser{}
mockEngine := &httpmocks.MockEngine{}
tt.setupMocks(mockHandler, mockRequestParser, mockEngine)
ash := NewATSessionHandler(mockHandler)
req := httptest.NewRequest(http.MethodPost, "/", strings.NewReader(tt.formData.Encode()))
req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
w := httptest.NewRecorder()
ash.ServeHTTP(w, req)
if w.Code != tt.expectedStatus {
t.Errorf("Expected status %d, got %d", tt.expectedStatus, w.Code)
}
if tt.expectedBody != "" && w.Body.String() != tt.expectedBody {
t.Errorf("Expected body %q, got %q", tt.expectedBody, w.Body.String())
}
})
}
}
func TestATSessionHandler_Output(t *testing.T) {
tests := []struct {
name string
input handlers.RequestSession
expectedPrefix string
expectedError bool
}{
{
name: "Continue true",
input: handlers.RequestSession{
Continue: true,
Engine: &httpmocks.MockEngine{
WriteResultFunc: func(context.Context, io.Writer) (int, error) {
return 0, nil
},
},
Writer: &httpmocks.MockWriter{},
},
expectedPrefix: "CON ",
expectedError: false,
},
{
name: "Continue false",
input: handlers.RequestSession{
Continue: false,
Engine: &httpmocks.MockEngine{
WriteResultFunc: func(context.Context, io.Writer) (int, error) {
return 0, nil
},
},
Writer: &httpmocks.MockWriter{},
},
expectedPrefix: "END ",
expectedError: false,
},
{
name: "WriteResult error",
input: handlers.RequestSession{
Continue: true,
Engine: &httpmocks.MockEngine{
WriteResultFunc: func(context.Context, io.Writer) (int, error) {
return 0, errors.New("write error")
},
},
Writer: &httpmocks.MockWriter{},
},
expectedPrefix: "CON ",
expectedError: true,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
ash := &ATSessionHandler{}
_, err := ash.Output(tt.input)
if tt.expectedError && err == nil {
t.Error("Expected an error, but got nil")
}
if !tt.expectedError && err != nil {
t.Errorf("Unexpected error: %v", err)
}
mw := tt.input.Writer.(*httpmocks.MockWriter)
if !mw.WriteStringCalled {
t.Error("WriteString was not called")
}
if mw.WrittenString != tt.expectedPrefix {
t.Errorf("Expected prefix %q, got %q", tt.expectedPrefix, mw.WrittenString)
}
})
}
}
func TestSessionHandler_ServeHTTP(t *testing.T) {
tests := []struct {
name string
sessionID string
input []byte
parserErr error
processErr error
outputErr error
resetErr error
expectedStatus int
}{
{
name: "Success",
sessionID: "123",
input: []byte("test input"),
expectedStatus: http.StatusOK,
},
{
name: "Missing Session ID",
sessionID: "",
parserErr: handlers.ErrSessionMissing,
expectedStatus: http.StatusBadRequest,
},
{
name: "Process Error",
sessionID: "123",
input: []byte("test input"),
processErr: handlers.ErrStorage,
expectedStatus: http.StatusInternalServerError,
},
{
name: "Output Error",
sessionID: "123",
input: []byte("test input"),
outputErr: errors.New("output error"),
expectedStatus: http.StatusOK,
},
{
name: "Reset Error",
sessionID: "123",
input: []byte("test input"),
resetErr: errors.New("reset error"),
expectedStatus: http.StatusOK,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
mockRequestParser := &httpmocks.MockRequestParser{
GetSessionIdFunc: func(any) (string, error) {
return tt.sessionID, tt.parserErr
},
GetInputFunc: func(any) ([]byte, error) {
return tt.input, nil
},
}
mockRequestHandler := &httpmocks.MockRequestHandler{
ProcessFunc: func(rs handlers.RequestSession) (handlers.RequestSession, error) {
return rs, tt.processErr
},
OutputFunc: func(rs handlers.RequestSession) (handlers.RequestSession, error) {
return rs, tt.outputErr
},
ResetFunc: func(rs handlers.RequestSession) (handlers.RequestSession, error) {
return rs, tt.resetErr
},
GetRequestParserFunc: func() handlers.RequestParser {
return mockRequestParser
},
GetConfigFunc: func() engine.Config {
return engine.Config{}
},
}
sessionHandler := ToSessionHandler(mockRequestHandler)
req := httptest.NewRequest(http.MethodPost, "/", bytes.NewBuffer(tt.input))
req.Header.Set("X-Vise-Session", tt.sessionID)
rr := httptest.NewRecorder()
sessionHandler.ServeHTTP(rr, req)
if status := rr.Code; status != tt.expectedStatus {
t.Errorf("handler returned wrong status code: got %v want %v",
status, tt.expectedStatus)
}
})
}
}
func TestSessionHandler_writeError(t *testing.T) {
handler := &SessionHandler{}
mockWriter := &httpmocks.MockWriter{}
err := errors.New("test error")
handler.writeError(mockWriter, http.StatusBadRequest, err)
if mockWriter.WrittenString != "" {
t.Errorf("Expected empty body, got %s", mockWriter.WrittenString)
}
}
func TestDefaultRequestParser_GetSessionId(t *testing.T) {
tests := []struct {
name string
request any
expectedID string
expectedError error
}{
{
name: "Valid Session ID",
request: func() *http.Request {
req := httptest.NewRequest(http.MethodPost, "/", nil)
req.Header.Set("X-Vise-Session", "123456")
return req
}(),
expectedID: "123456",
expectedError: nil,
},
{
name: "Missing Session ID",
request: httptest.NewRequest(http.MethodPost, "/", nil),
expectedID: "",
expectedError: handlers.ErrSessionMissing,
},
{
name: "Invalid Request Type",
request: invalidRequestType{},
expectedID: "",
expectedError: handlers.ErrInvalidRequest,
},
}
parser := &DefaultRequestParser{}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
id, err := parser.GetSessionId(tt.request)
if id != tt.expectedID {
t.Errorf("Expected session ID %s, got %s", tt.expectedID, id)
}
if err != tt.expectedError {
t.Errorf("Expected error %v, got %v", tt.expectedError, err)
}
})
}
}
func TestDefaultRequestParser_GetInput(t *testing.T) {
tests := []struct {
name string
request any
expectedInput []byte
expectedError error
}{
{
name: "Valid Input",
request: func() *http.Request {
return httptest.NewRequest(http.MethodPost, "/", bytes.NewBufferString("test input"))
}(),
expectedInput: []byte("test input"),
expectedError: nil,
},
{
name: "Empty Input",
request: httptest.NewRequest(http.MethodPost, "/", nil),
expectedInput: []byte{},
expectedError: nil,
},
{
name: "Invalid Request Type",
request: invalidRequestType{},
expectedInput: nil,
expectedError: handlers.ErrInvalidRequest,
},
{
name: "Read Error",
request: func() *http.Request {
return httptest.NewRequest(http.MethodPost, "/", &errorReader{})
}(),
expectedInput: nil,
expectedError: errors.New("read error"),
},
}
parser := &DefaultRequestParser{}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
input, err := parser.GetInput(tt.request)
if !bytes.Equal(input, tt.expectedInput) {
t.Errorf("Expected input %s, got %s", tt.expectedInput, input)
}
if err != tt.expectedError && (err == nil || err.Error() != tt.expectedError.Error()) {
t.Errorf("Expected error %v, got %v", tt.expectedError, err)
}
})
}
}