hetty/pkg/reqlog/reqlog_test.go
2022-03-23 14:31:27 +01:00

127 lines
3.8 KiB
Go

package reqlog_test
//go:generate go run github.com/matryer/moq -out repo_mock_test.go -pkg reqlog_test . Repository:RepoMock
import (
"context"
"io"
"math/rand"
"net/http"
"net/http/httptest"
"strings"
"testing"
"time"
"github.com/google/go-cmp/cmp"
"github.com/oklog/ulid"
"github.com/dstotijn/hetty/pkg/proxy"
"github.com/dstotijn/hetty/pkg/reqlog"
"github.com/dstotijn/hetty/pkg/scope"
)
//nolint:gosec
var ulidEntropy = rand.New(rand.NewSource(time.Now().UnixNano()))
//nolint:paralleltest
func TestRequestModifier(t *testing.T) {
repoMock := &RepoMock{
StoreRequestLogFunc: func(_ context.Context, _ reqlog.RequestLog) error {
return nil
},
}
svc := reqlog.NewService(reqlog.Config{
Repository: repoMock,
Scope: &scope.Scope{},
})
svc.SetActiveProjectID(ulid.MustNew(ulid.Timestamp(time.Now()), ulidEntropy))
next := func(req *http.Request) {
req.Body = io.NopCloser(strings.NewReader("modified body"))
}
reqModFn := svc.RequestModifier(next)
req := httptest.NewRequest("GET", "https://example.com/", strings.NewReader("bar"))
reqID := ulid.MustNew(ulid.Timestamp(time.Now()), ulidEntropy)
req = req.WithContext(proxy.WithRequestID(req.Context(), reqID))
reqModFn(req)
t.Run("request log was stored in repository", func(t *testing.T) {
gotCount := len(repoMock.StoreRequestLogCalls())
if expCount := 1; expCount != gotCount {
t.Fatalf("incorrect `proj.Service.AddRequestLog` calls (expected: %v, got: %v)", expCount, gotCount)
}
exp := reqlog.RequestLog{
ID: ulid.ULID{}, // Empty value
ProjectID: svc.ActiveProjectID(),
Method: req.Method,
URL: req.URL,
Proto: req.Proto,
Header: req.Header,
Body: []byte("modified body"),
}
got := repoMock.StoreRequestLogCalls()[0].ReqLog
got.ID = ulid.ULID{} // Override to empty value so we can compare against expected value.
if diff := cmp.Diff(exp, got); diff != "" {
t.Fatalf("request log not equal (-exp, +got):\n%v", diff)
}
})
}
//nolint:paralleltest
func TestResponseModifier(t *testing.T) {
repoMock := &RepoMock{
StoreResponseLogFunc: func(_ context.Context, _ ulid.ULID, _ reqlog.ResponseLog) error {
return nil
},
}
svc := reqlog.NewService(reqlog.Config{
Repository: repoMock,
})
svc.SetActiveProjectID(ulid.MustNew(ulid.Timestamp(time.Now()), ulidEntropy))
next := func(res *http.Response) error {
res.Body = io.NopCloser(strings.NewReader("modified body"))
return nil
}
resModFn := svc.ResponseModifier(next)
req := httptest.NewRequest("GET", "https://example.com/", strings.NewReader("bar"))
reqLogID := ulid.MustNew(ulid.Timestamp(time.Now()), ulidEntropy)
req = req.WithContext(context.WithValue(req.Context(), reqlog.ReqLogIDKey, reqLogID))
res := &http.Response{
Request: req,
Body: io.NopCloser(strings.NewReader("bar")),
}
if err := resModFn(res); err != nil {
t.Fatalf("unexpected error (expected: nil, got: %v)", err)
}
t.Run("request log was stored in repository", func(t *testing.T) {
// Dirty (but simple) wait for other goroutine to finish calling repository.
time.Sleep(10 * time.Millisecond)
got := len(repoMock.StoreResponseLogCalls())
if exp := 1; exp != got {
t.Fatalf("incorrect `proj.Service.AddResponseLog` calls (expected: %v, got: %v)", exp, got)
}
t.Run("ran next modifier first, before calling repository", func(t *testing.T) {
got := repoMock.StoreResponseLogCalls()[0].ResLog.Body
if exp := "modified body"; exp != string(got) {
t.Fatalf("incorrect `ResponseLog.Body` value (expected: %v, got: %v)", exp, string(got))
}
})
t.Run("called repository with request log id", func(t *testing.T) {
got := repoMock.StoreResponseLogCalls()[0].ReqLogID
if exp := reqLogID; exp.Compare(got) != 0 {
t.Fatalf("incorrect `reqLogID` argument for `Repository.AddResponseLogCalls` (expected: %v, got: %v)",
exp.String(), got.String())
}
})
})
}