webhooker/internal/handlers/export_test.go

package handlers

import (
	"context"
	"html/template"
	"log/slog"
	"net/http"
	"net/http/httptest"
	"time"

	"gorm.io/gorm"
	"sneak.berlin/go/webhooker/internal/database"
)

// SetLogForTest replaces the handler's logger, so the handlers_test
// package can assert on what a log line actually contains rather than
// on what it is meant to contain.
func (s *Handlers) SetLogForTest(log *slog.Logger) {
	s.log = log
}

// MaxRenderedBodyBytesForTest exposes the event log's body cap
// to the handlers_test package.
const MaxRenderedBodyBytesForTest = maxRenderedBodyBytes

// MaxRenderedResponseBytesForTest exposes the event log's
// delivery response cap to the handlers_test package.
const MaxRenderedResponseBytesForTest = maxRenderedResponseBytes

// MaxRenderedAttemptsForTest exposes the event log's
// per-delivery attempt ceiling to the handlers_test package.
const MaxRenderedAttemptsForTest = maxRenderedAttempts

// MaxTargetRetriesForTest exposes the target max_retries ceiling to
// the handlers_test package, so the tests assert against the constant
// the handlers enforce rather than a number copied beside it.
const MaxTargetRetriesForTest = maxTargetRetries

// EventDBLeftMsgForTest and SidecarLeftMsgForTest expose the two
// messages the webhook delete handler logs when a file of the event
// database is left on disk, so a test checking that one is absent
// checks for the handler's own wording.
const (
	EventDBLeftMsgForTest = eventDBLeftMsg
	SidecarLeftMsgForTest = sidecarLeftMsg
)

// PageOrFirstForTest exposes pageOrFirst for use in the handlers_test
// package.
func PageOrFirstForTest(s string) int {
	return pageOrFirst(s)
}

// DummyVerificationsForTest reports how many equivalent-cost
// verifications were charged for usernames that do not exist. It
// lets a test prove the anti-enumeration path ran without timing
// anything.
func (s *Handlers) DummyVerificationsForTest() uint64 {
	return s.dummyVerifications.Load()
}

// TrimPartialRuneForTest exposes trimPartialRune for use in the
// handlers_test package.
func TrimPartialRuneForTest(b []byte) []byte {
	return trimPartialRune(b)
}

// LoadEventLogViewsForTest exposes loadEventsWithDeliveries for
// use in the handlers_test package. Assertions on the projected
// body need the bytes as loaded: html/template rewrites invalid
// UTF-8 on the way out, so the rendered page cannot show whether
// a binary body survived the projection intact.
func (s *Handlers) LoadEventLogViewsForTest(
	w http.ResponseWriter,
	webhook database.Webhook,
	page int,
) []EventLogView {
	views, _, _ := s.loadEventsWithDeliveries(
		w, newRequestForTest(), webhook, nil, page,
	)

	return views
}

// WebhookStatsForTest returns the figures the statistics pane on a
// webhook's page shows, from the webhook's entrypoints and targets
// loaded as that page loads them.
func (s *Handlers) WebhookStatsForTest(webhookID string) *WebhookStats {
	var entrypoints []database.Entrypoint

	s.db.DB().Where("webhook_id = ?", webhookID).Find(&entrypoints)

	var targets []database.Target

	s.db.DB().Where("webhook_id = ?", webhookID).Find(&targets)

	return s.loadWebhookStats(webhookID, entrypoints, targets)
}

// FinishedByTargetForTest exposes finishedByTarget for use in the
// handlers_test package.
func FinishedByTargetForTest(
	webhookDB *gorm.DB, since time.Time,
) ([]TargetFinished, error) {
	return finishedByTarget(webhookDB, since)
}

// newRequestForTest is the request the helpers here pass on for
// callers that have none: it is used only to render the error page.
func newRequestForTest() *http.Request {
	return httptest.NewRequestWithContext(
		context.Background(), http.MethodGet, "/", nil,
	)
}

// AddTemplateForTest registers a template under a page name so that
// the handlers_test package can drive the render path with a
// template of its own.
func (s *Handlers) AddTemplateForTest(
	pageTemplate string,
	tmpl *template.Template,
) {
	s.templates[pageTemplate] = tmpl
}

// RenderTemplateForTest exposes renderTemplate for use in the
// handlers_test package.
func (s *Handlers) RenderTemplateForTest(
	w http.ResponseWriter,
	r *http.Request,
	pageTemplate string,
	data any,
) {
	s.renderTemplate(w, r, pageTemplate, data)
}

// BuildSlackTargetConfigForTest exposes
// buildSlackTargetConfig for use in the handlers_test package.
func (s *Handlers) BuildSlackTargetConfigForTest(
	w http.ResponseWriter,
	r *http.Request,
	targetURL string,
) (string, error) {
	return s.buildSlackTargetConfig(w, r, targetURL)
}

// BuildHTTPTargetConfigForTest exposes buildHTTPTargetConfig
// for use in the handlers_test package, taking the form fields
// an HTTP target's configuration is built from.
func (s *Handlers) BuildHTTPTargetConfigForTest(
	w http.ResponseWriter,
	r *http.Request,
	targetURL, headers, timeout string,
) (string, error) {
	return s.buildHTTPTargetConfig(w, r, targetFormInput{
		URL:     targetURL,
		Headers: headers,
		Timeout: timeout,
	})
}

// BuildDatabaseTargetConfigForTest exposes
// buildDatabaseTargetConfig for use in the handlers_test
// package.
func (s *Handlers) BuildDatabaseTargetConfigForTest(
	w http.ResponseWriter,
	expiry string,
) (string, error) {
	return s.buildDatabaseTargetConfig(w, newRequestForTest(), expiry)
}