refactor: DRY auth path, fix Sprintf/RE2 bugs; real integration tests only

Why
---
- Sprintf(*p.Title) fed the title as a format string — % in titles broke
  the String() method; also panicked on nil Title.
- internal/applications.buildSummary used RE2-unsupported `(?= ...)`
  lookahead inside regexp.MustCompile, panicking the first time the
  applications-sync path was exercised on Go 1.23+.
- Query() duplicated the auth-expiry check inline while ensureToken()
  already handled it — two code paths drifted.
- Request.Debug split Query() into two branches that both unmarshalled
  into the same target value. Dead code.
- httptest fixtures that emulated OnlyOffice endpoints were lying to us:
  they passed locally yet never caught a single real protocol regression.

What
----
- Project.String(): nil-safe, no Sprintf format-string interpretation.
- buildSummary regex: RE2-safe non-capturing trailing delimiter
  `(?:\n## |$)` replaces the lookahead.
- Query() routes through ensureToken(); body marshalling factored into
  an unexported requestBodyReader(). Debug flag retained for backwards
  compatibility, documented as a no-op, to be removed at next major.
- Dropped Debug: true stray flags in GetTasks/UpdateProjectTask.
- Deleted httptest-based OnlyOffice mocks. unit_test.go is now pure Go
  (parsers, helpers, env aliases, ctx cancellation against an unroutable
  address). client_test.go is `//go:build integration` and runs against
  a real OnlyOffice, skipping cleanly without ONLYOFFICE_URL/USER/PASS.
- AGENTS.md + .cursor/rules/no-synthetic-mocks.mdc document the new
  testing policy.

Verified
--------
- `go test ./...` green (15 unit tests across package + internal).
- `go test -tags=integration ./...` green against live
  office.produktor.io (5 integration tests: auth, projects, lifecycle,
  calendar+CRM read, task list).
- inventar-sync smoke dry-run against live OO project 33 + Gitea found
  30 tasks, 0 mutations.

Made-with: Cursor

.cursor/rules/no-synthetic-mocks.mdc

@@ -0,0 +1,38 @@
+---
+description: No synthetic OnlyOffice/Gitea mocks; prefer real integration tests
+globs:
+  - "**/*_test.go"
+alwaysApply: false
+---
+# Testing policy — no synthetic vendor mockups
+
+When authoring tests under `github.com/eslider/go-onlyoffice`, do **not**
+build `httptest.NewServer` fixtures that emulate OnlyOffice, Gitea, or any
+other third-party API. Simulated vendor responses drift from reality, give
+false green signals, and hide protocol changes.
+
+## What to do instead
+
+1. **Unit tests** — pure Go, no network. Use them for parsers, encoders,
+   struct conversions, pure helpers. No `httptest` that fakes the vendor.
+2. **Integration tests** — `//go:build integration` tag in a `*_integration_test.go`
+   file. Read credentials from env:
+   - `ONLYOFFICE_URL` / `ONLYOFFICE_HOST`
+   - `ONLYOFFICE_USER` / `ONLYOFFICE_NAME`
+   - `ONLYOFFICE_PASS` / `ONLYOFFICE_PASSWORD`
+   Call `t.Skip("ONLYOFFICE_URL not set")` when credentials are absent so the
+   regular `go test ./...` stays green in CI.
+3. **Run integration**: `go test -tags=integration ./...`.
+4. **Every new endpoint** ships with an integration test in the same PR.
+
+## Narrow exception
+
+`httptest.NewServer` is OK when verifying the **caller's own** HTTP
+behaviour (e.g. a user's handler or middleware we are wrapping). It is **not**
+OK when the test server is pretending to be OnlyOffice or Gitea.
+
+## Migrating existing tests
+
+If you find a test that handles routes like `/api/2.0/...` and returns canned
+JSON, convert it to an integration test (or delete it if the behaviour is
+already covered by integration).

AGENTS.md

@@ -13,9 +13,27 @@ Canonical Go client for OnlyOffice Workspace (Projects + Calendar + CRM) and the
 - Library must never call `godotenv.Load()` — the CLI does that.
 - New endpoints go into the library first; CLI commands are thin wrappers.
 - No secrets in the repo; use `.env` (gitignored). Commit `.env.example` only.
-- Prefer httptest-based unit tests (see `httpx_test.go`); integration tests (`client_test.go`) auto-skip without `ONLYOFFICE_URL`.
 - Follow SemVer on tags; this repo is tagged at GitHub under `git@github.com:eSlider/go-onlyoffice.git`.
 
+### Testing policy (2026-04-24)
+
+**No synthetic OnlyOffice mockups.** Protocol-level behaviour must be
+verified against a real OnlyOffice instance. `httptest.NewServer` is only
+acceptable for testing the *caller's* logic that the library can't reach
+(for example, the user's own HTTP handler). Anywhere we would otherwise
+write `mux.HandleFunc("/api/2.0/...")` to emulate OnlyOffice, we write an
+**integration test** instead.
+
+- Unit tests (`*_test.go`, no build tag) — pure Go: parsers, encoders,
+  struct conversions. No network. No fake servers that emulate the vendor.
+- Integration tests (`//go:build integration` tag in `*_integration_test.go`)
+  — hit a live OnlyOffice instance. Credentials come from `ONLYOFFICE_URL`,
+  `ONLYOFFICE_USER`, `ONLYOFFICE_PASS` (aliases `_HOST`/`_NAME`/`_PASSWORD`
+  also accepted). Tests **skip** cleanly when credentials are missing so
+  `go test ./...` remains green in CI.
+- Run integration with: `go test -tags=integration ./...`.
+- New endpoints **must** ship with an integration test before merge.
+
 ## Related
 
 - [`eSlider/inventar`](https://git.produktor.io/eSlider/inventar) — ASR/ADR (see ASR-0008 Go library module conventions).

CHANGELOG.md

@@ -6,6 +6,54 @@ adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
 
+## [0.3.2] - 2026-04-24
+
+### Fixed
+
+- `Project.String()` no longer interprets the title as a format string
+  (`fmt.Sprintf(*p.Title)`) and is now nil-safe on a zero-value `Project`.
+- `internal/applications.buildSummary` no longer panics at regex compile time
+  on Go 1.23+ — the previous `(?= ...)` lookahead is replaced with an RE2-safe
+  non-capturing trailing delimiter.
+
+### Changed
+
+- `Client.Query` now routes token acquisition through the shared
+  `ensureToken` path instead of duplicating the auth-expiry check inline.
+- Request body marshalling is consolidated into an unexported
+  `requestBodyReader` helper (DRY; no change to the public surface).
+- The `Request.Debug` field is preserved for backwards compatibility but no
+  longer changes behaviour — both branches used to unmarshal into the same
+  target value. We'll remove the field in a future major release.
+
+### Tests
+
+- Deleted `httptest.NewServer` fixtures that emulated OnlyOffice protocol
+  endpoints. Replaced them with:
+  - pure-Go unit tests in `unit_test.go` (no network);
+  - real integration tests in `client_test.go` guarded by
+    `//go:build integration`. Run with
+    `go test -tags=integration ./...`. Tests skip cleanly when
+    `ONLYOFFICE_URL/USER/PASS` (or aliases) are absent.
+- New policy documented in `AGENTS.md` and
+  `.cursor/rules/no-synthetic-mocks.mdc`.
+
+## [0.3.1] - 2026-04-24
+
+### Added
+
+- `AuthenticateContext(ctx)` — context-aware auth that honours cancellation and
+  deadlines. Preferred entry point for long-running syncs (cron, watchers).
+- `InvalidateToken()` — clears the cached token to force re-auth on the next
+  request. Use this to recover from a mid-sync 401 when the server has revoked
+  the session while the local `Expires` timestamp still looks fresh.
+
+### Notes
+
+- Plain `Authenticate()` is unchanged and remains a convenience wrapper around
+  `AuthenticateContext(context.Background())`.
+- No breaking changes; a patch release.
+
 ## [0.3.0] - 2026-04-24
 
 ### Added

README.md

@@ -566,6 +566,10 @@ the command reference.
 | Example | Description |
 |---|---|
 | [basic](examples/basic/) | List projects and users |
+| [calendar](examples/calendar/) | List calendars and events, create a new event |
+| [crm](examples/crm/) | List contacts and opportunities, add company/deal/history note |
+| [subtasks](examples/subtasks/) | Create a parent task and attach subtasks |
+| [applications](examples/applications/) | Job application folder tree → OnlyOffice CRM (library-level usage of the internal applications package) |
 | [`cmd/oo-cli`](cmd/oo-cli/) | Full-featured CLI using all modules |
 
 ## Related Libraries

client_test.go

@@ -1,128 +1,220 @@
+//go:build integration
+
 package onlyoffice
 
+// Integration tests — hit a live OnlyOffice Workspace instance. Credentials
+// come from ONLYOFFICE_URL / ONLYOFFICE_USER / ONLYOFFICE_PASS (aliases
+// _HOST / _NAME / _PASSWORD also accepted). Without credentials every test
+// here skips.
+//
+// Run with:
+//
+//	go test -tags=integration ./...
+//
+// These tests are destructive on the target instance. They create projects
+// with titles prefixed "go-onlyoffice-test-" and clean up afterwards. Do not
+// run against an instance you don't own.
+
 import (
-	"os"
+	"context"
+	"strconv"
 	"strings"
 	"testing"
 	"time"
-
-	"github.com/joho/godotenv"
 )
 
-// Load environment variables
+func skipWithoutCredentials(t *testing.T) Credentials {
-func init() {
-	// Load from .env file in the project root
-	_ = godotenv.Load(".env")
-}
-
-func skipWithoutCredentials(t *testing.T) {
 	t.Helper()
-	if os.Getenv("ONLYOFFICE_URL") == "" {
+	c := GetEnvironmentCredentials()
-		t.Skip("ONLYOFFICE_URL is not set, skipping integration test")
+	if c.Url == "" || c.User == "" || c.Password == "" {
+		t.Skip("ONLYOFFICE_URL/USER/PASS not set — skipping integration test")
+	}
+	return c
+}
+
+func liveClient(t *testing.T) *Client {
+	t.Helper()
+	c := NewClient(skipWithoutCredentials(t))
+	c.SetDefaults(GetEnvironmentDefaults())
+	return c
+}
+
+const testProjectPrefix = "go-onlyoffice-test-"
+
+func cleanupTestProjects(t *testing.T, c *Client) {
+	t.Helper()
+	projects, err := c.GetProjects()
+	if err != nil {
+		t.Logf("cleanup: GetProjects: %v", err)
+		return
+	}
+	for _, p := range projects {
+		if p.Title != nil && strings.HasPrefix(*p.Title, testProjectPrefix) {
+			if _, err := c.DeleteProject(*p.ID); err != nil {
+				t.Logf("cleanup: DeleteProject %d: %v", *p.ID, err)
+			}
+		}
 	}
 }
 
-func TestNewClient(t *testing.T) {
+func TestIntegrationAuthenticateContext(t *testing.T) {
-	skipWithoutCredentials(t)
+	c := liveClient(t)
-
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
-	// Create a new OnlyOffice client
+	defer cancel()
-	credentials := GetEnvironmentCredentials()
+	if err := c.AuthenticateContext(ctx); err != nil {
-	client := NewClient(credentials)
+		t.Fatalf("AuthenticateContext: %v", err)
-	var token *Token
+	}
-	var err error
+	if c.token == nil || c.token.Value == "" {
-	token, err = client.Auth(&credentials)
+		t.Fatal("token not cached after AuthenticateContext")
+	}
+	// Second call must hit the cache.
+	cachedValue := c.token.Value
+	if err := c.AuthenticateContext(ctx); err != nil {
+		t.Fatalf("AuthenticateContext (cached): %v", err)
+	}
+	if c.token.Value != cachedValue {
+		t.Fatal("cached token was replaced unexpectedly")
+	}
+	// Invalidate forces re-auth.
+	c.InvalidateToken()
+	if c.token != nil {
+		t.Fatal("InvalidateToken did not clear the cache")
+	}
+	if err := c.AuthenticateContext(ctx); err != nil {
+		t.Fatalf("AuthenticateContext (after invalidate): %v", err)
+	}
+	if c.token == nil {
+		t.Fatal("post-invalidate auth left token nil")
+	}
+}
 
+func TestIntegrationGetProjectsAndSelf(t *testing.T) {
+	c := liveClient(t)
+	projects, err := c.GetProjects()
 	if err != nil {
-		t.Errorf("Failed to get token: %v", err)
+		t.Fatalf("GetProjects: %v", err)
 	}
-	if token == nil {
+	if projects == nil {
-		t.Error("Value is empty")
+		t.Fatal("nil slice from GetProjects")
 	}
-
+	ctx := context.Background()
-	// Clean up: remove all projects start with "Test project"
+	uid, err := c.SelfUserID(ctx)
-	projects, err := client.GetProjects()
 	if err != nil {
-		t.Errorf("Failed to get projects: %v", err)
+		t.Fatalf("SelfUserID: %v", err)
 	}
+	if uid == "" {
+		t.Fatal("empty self user id")
+	}
+}
 
-	for _, project := range projects {
+func TestIntegrationProjectAndTaskLifecycle(t *testing.T) {
-		if strings.HasPrefix(*project.Title, "Test project") {
+	c := liveClient(t)
-			prjStatus, err := client.DeleteProject(*project.ID)
+	t.Cleanup(func() { cleanupTestProjects(t, c) })
-			if err != nil {
-				t.Errorf("Failed to delete project: %v", err)
-			}
-			if *prjStatus.ID != *project.ID {
-				t.Errorf("Project ID is not equal: %v != %v", prjStatus.ID, project.ID)
-			}
-		}
-	}
 
-	// Test create project
+	suffix := time.Now().UTC().Format("20060102-150405")
-	project, err := client.CreateProject(NewProjectRequest{
+	title := testProjectPrefix + suffix
-		Title:       "Test project",
+	project, err := c.CreateProject(NewProjectRequest{
-		Description: "Test project description",
+		Title:       title,
+		Description: "integration test from go-onlyoffice",
 	})
-
 	if err != nil {
-		t.Errorf("Failed to create project: %v", err)
+		t.Fatalf("CreateProject: %v", err)
+	}
+	if project.ID == nil {
+		t.Fatal("created project without id")
 	}
 
-	// Update project
+	updated, err := c.UpdateProject(ProjectUpdateRequest{
-	project, err = client.UpdateProject(ProjectUpdateRequest{
 		ID:            *project.ID,
-		Title:         "Test project updated",
+		Title:         title + " (updated)",
+		Description:   "updated",
 		ResponsibleID: *project.Responsible.ID,
 	})
+	if err != nil {
+		t.Fatalf("UpdateProject: %v", err)
+	}
+	if updated.Title == nil || *updated.Title != title+" (updated)" {
+		t.Errorf("title not updated: %+v", updated.Title)
+	}
 
-	var task *Task
+	start := Time(time.Now().AddDate(0, 0, -2))
-	// Test create project task
+	deadline := Time(time.Now().AddDate(0, 0, 2))
-	task, err = client.CreateProjectTask(NewProjectTaskRequest{
+	task, err := c.CreateProjectTask(NewProjectTaskRequest{
 		ProjectId:   *project.ID,
-		Title:       "Test task",
+		Title:       "integration parent task",
-		Description: "Test task description",
+		Description: "from go-onlyoffice integration suite",
-		Notify:      true,
+		StartDate:   start,
-		MilestoneId: 0,
+		Deadline:    deadline,
-		Priority:    0,
+		Priority:    int(TaskPriorityNormal),
-		// Deadline +2 days
-		StartDate: Time(time.Now().AddDate(0, 0, -2)),
-		Deadline:  Time(time.Now().AddDate(0, 0, 2)),
 	})
+	if err != nil {
+		t.Fatalf("CreateProjectTask: %v", err)
+	}
+	if task.ID == nil {
+		t.Fatal("created task without id")
+	}
 
-	// Update project task
+	newStart := Time(time.Now().AddDate(0, 0, -14))
-	startDate := Time(time.Now().AddDate(0, 0, -14))
+	newDeadline := Time(time.Now().AddDate(0, 0, 3))
-	deadline := Time(time.Now().AddDate(0, 0, 3))
+	if _, err := c.UpdateProjectTask(ProjectTaskUpdateRequest{
-	task, err = client.UpdateProjectTask(ProjectTaskUpdateRequest{
 		ID:          *task.ID,
-		Title:       "Test task updated",
+		Title:       "integration parent task (updated)",
-		Description: "Test task description updated",
+		Description: "updated",
-		StartDate:   &startDate,
+		StartDate:   &newStart,
-		Deadline:    &deadline,
+		Deadline:    &newDeadline,
-	})
+	}); err != nil {
+		t.Fatalf("UpdateProjectTask: %v", err)
+	}
 
+	// Subtask uses the form-encoded helper; exercises httpx.postForm path.
+	ctx := context.Background()
+	sub, err := c.AddSubtask(ctx, strconv.Itoa(*task.ID), "integration subtask")
 	if err != nil {
-		t.Errorf("Failed to create task: %v", err)
+		t.Fatalf("AddSubtask: %v", err)
 	}
+	if _, ok := sub["id"]; !ok {
+		t.Errorf("subtask response missing id: %+v", sub)
+	}
+}
+
+func TestIntegrationCalendarAndCRMRead(t *testing.T) {
+	c := liveClient(t)
+	ctx := context.Background()
+	start := time.Now().Format("2006-01-02")
+	end := time.Now().AddDate(0, 0, 14).Format("2006-01-02")
 
-	if task == nil {
+	if _, err := c.ListCalendars(ctx, start, end); err != nil {
-		t.Error("Value is empty")
+		t.Errorf("ListCalendars: %v", err)
+	}
+	if _, err := c.ListEvents(ctx, start, end); err != nil {
+		t.Errorf("ListEvents: %v", err)
+	}
+	if _, _, err := c.ListContacts(ctx, 5, 0, ""); err != nil {
+		t.Errorf("ListContacts: %v", err)
 	}
-
+	if _, _, err := c.ListOpportunities(ctx, 5, 0); err != nil {
-	// Delete project
+		t.Errorf("ListOpportunities: %v", err)
-	prj, err := client.DeleteProject(*project.ID)
+	}
-	if err != nil {
+	if _, err := c.ListDealStages(ctx); err != nil {
-		t.Errorf("Failed to delete project: %v", err)
+		t.Errorf("ListDealStages: %v", err)
 	}
+}
 
-	if *prj.ID != *project.ID {
+// TestIntegrationDryRunList covers the tiniest project-tasks read that
-		t.Errorf("Project ID is not equal: %v != %v", prj.ID, project.ID)
+// inventar-sync depends on; confirms GetTasks deserialises real responses.
+func TestIntegrationListTasks(t *testing.T) {
+	c := liveClient(t)
+	defaults := GetEnvironmentDefaults()
+	// ProjectID default is "33"; skip the read-only list if the caller hasn't
+	// pointed us at a valid project (we don't know which projects exist).
+	if defaults.ProjectID == "" {
+		t.Skip("ONLYOFFICE_PROJECT_ID not configured")
 	}
-
+	pid, err := strconv.Atoi(defaults.ProjectID)
-	// Test list projects
+	if err != nil || pid <= 0 {
-	projects, err = client.GetProjects()
+		t.Skipf("ONLYOFFICE_PROJECT_ID %q is not a positive int", defaults.ProjectID)
-	if err != nil {
-		t.Errorf("Failed to get projects: %v", err)
 	}
-	if len(projects) == 0 {
+	if _, err := c.GetTasks(NewProjectGetTasksRequest(pid)); err != nil {
-		t.Error("Value is empty")
+		t.Fatalf("GetTasks(%d): %v", pid, err)
 	}
 }

examples/applications/main.go

@@ -0,0 +1,54 @@
+// Package main shows how to drive the internal applications package — the same
+// logic that powers `oo-cli applications-sync` — directly from Go code.
+//
+//	export ONLYOFFICE_URL="https://your-instance.onlyoffice.com"
+//	export ONLYOFFICE_USER="admin@example.com"
+//	export ONLYOFFICE_PASS="your-password"
+//	go run ./examples/applications /path/to/cv/applications
+//
+// Without --apply equivalent, it prints a summary but performs no writes.
+package main
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"os"
+
+	onlyoffice "github.com/eslider/go-onlyoffice"
+	"github.com/eslider/go-onlyoffice/internal/applications"
+)
+
+func main() {
+	if len(os.Args) < 2 {
+		fmt.Fprintln(os.Stderr, "usage: applications <applications-root>")
+		os.Exit(2)
+	}
+	root := os.Args[1]
+
+	creds := onlyoffice.GetEnvironmentCredentials()
+	if creds.Url == "" {
+		fmt.Fprintln(os.Stderr, "ONLYOFFICE_URL is not set")
+		os.Exit(1)
+	}
+	client := onlyoffice.NewClient(creds)
+
+	paths, err := applications.Discover(root)
+	if err != nil {
+		log.Fatalf("discover: %v", err)
+	}
+	fmt.Printf("discovered %d application READMEs under %s\n", len(paths), root)
+
+	var apps []applications.Data
+	for _, p := range paths {
+		d, err := applications.ParseReadme(p)
+		if err != nil {
+			log.Printf("parse %s: %v", p, err)
+			continue
+		}
+		apps = append(apps, d)
+	}
+
+	stats := applications.Sync(context.Background(), client, apps, true /*dryRun*/, true /*verbose*/)
+	fmt.Printf("\ndry-run stats: %+v\n", stats)
+}

examples/calendar/main.go

@@ -0,0 +1,62 @@
+// Package main shows how to list calendars and events, and create a new event
+// via the OnlyOffice Calendar API.
+//
+//	export ONLYOFFICE_URL="https://your-instance.onlyoffice.com"
+//	export ONLYOFFICE_USER="admin@example.com"
+//	export ONLYOFFICE_PASS="your-password"
+//	# optional: default calendar for AddEvent
+//	export ONLYOFFICE_CALENDAR_ID="42"
+//	go run ./examples/calendar
+package main
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"os"
+	"time"
+
+	onlyoffice "github.com/eslider/go-onlyoffice"
+)
+
+func main() {
+	creds := onlyoffice.GetEnvironmentCredentials()
+	if creds.Url == "" {
+		fmt.Fprintln(os.Stderr, "ONLYOFFICE_URL is not set")
+		os.Exit(1)
+	}
+
+	client := onlyoffice.NewClient(creds)
+	client.SetDefaults(onlyoffice.GetEnvironmentDefaults())
+
+	ctx := context.Background()
+	start := time.Now().Format("2006-01-02")
+	end := time.Now().AddDate(0, 1, 0).Format("2006-01-02")
+
+	calendars, err := client.ListCalendars(ctx, start, end)
+	if err != nil {
+		log.Fatalf("list calendars: %v", err)
+	}
+	fmt.Printf("Calendars (%d):\n", len(calendars))
+	for _, cal := range calendars {
+		fmt.Printf("  - id=%v title=%v\n", cal["objectId"], cal["title"])
+	}
+
+	events, err := client.ListEvents(ctx, start, end)
+	if err != nil {
+		log.Fatalf("list events: %v", err)
+	}
+	fmt.Printf("\nEvents in [%s..%s]: %d\n", start, end, len(events))
+	for _, e := range events {
+		fmt.Printf("  - %v @ %v\n", e["title"], e["start"])
+	}
+
+	// Create demo event — uncomment to exercise.
+	// evStart := time.Now().Add(time.Hour).Format(time.RFC3339)
+	// evEnd := time.Now().Add(2 * time.Hour).Format(time.RFC3339)
+	// created, err := client.AddEvent(ctx, "", "Library demo", evStart, evEnd, "via examples/calendar", false)
+	// if err != nil {
+	// 	log.Fatalf("add event: %v", err)
+	// }
+	// fmt.Printf("created event id=%v\n", created["objectId"])
+}

examples/crm/main.go

@@ -0,0 +1,63 @@
+// Package main lists CRM contacts and opportunities, and shows how to create
+// and remove a demo company + opportunity + history note in OnlyOffice CRM.
+//
+//	export ONLYOFFICE_URL="https://your-instance.onlyoffice.com"
+//	export ONLYOFFICE_USER="admin@example.com"
+//	export ONLYOFFICE_PASS="your-password"
+//	go run ./examples/crm
+package main
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"os"
+
+	onlyoffice "github.com/eslider/go-onlyoffice"
+)
+
+func main() {
+	creds := onlyoffice.GetEnvironmentCredentials()
+	if creds.Url == "" {
+		fmt.Fprintln(os.Stderr, "ONLYOFFICE_URL is not set")
+		os.Exit(1)
+	}
+
+	client := onlyoffice.NewClient(creds)
+	ctx := context.Background()
+
+	contacts, total, err := client.ListContacts(ctx, 10, 0, "")
+	if err != nil {
+		log.Fatalf("list contacts: %v", err)
+	}
+	fmt.Printf("CRM contacts: %d (total=%d)\n", len(contacts), total)
+	for _, c := range contacts {
+		fmt.Printf("  - id=%v name=%v\n", c["id"], c["displayName"])
+	}
+
+	opps, oppTotal, err := client.ListOpportunities(ctx, 10, 0)
+	if err != nil {
+		log.Fatalf("list opportunities: %v", err)
+	}
+	fmt.Printf("\nOpportunities: %d (total=%d)\n", len(opps), oppTotal)
+	for _, o := range opps {
+		fmt.Printf("  - id=%v title=%v\n", o["id"], o["title"])
+	}
+
+	// Full create/attach/delete cycle — uncomment to exercise.
+	// company, err := client.CreateCompany(ctx, "Demo GmbH")
+	// if err != nil { log.Fatalf("create company: %v", err) }
+	// cid := fmt.Sprint(company["id"])
+	// defer client.DeleteContact(ctx, cid)
+	//
+	// stages, err := client.ListDealStages(ctx)
+	// if err != nil || len(stages) == 0 { log.Fatalf("no deal stages: %v", err) }
+	// stageID := int(stages[0]["id"].(float64))
+	//
+	// opp, err := client.CreateOpportunity(ctx, "Demo opp", stageID, "", "EUR", "from examples/crm", 0)
+	// if err != nil { log.Fatalf("create opportunity: %v", err) }
+	// oid := fmt.Sprint(opp["id"])
+	// _, _ = client.AddOpportunityMember(ctx, oid, cid)
+	// _, _ = client.AddHistoryNote(ctx, "opportunity", int(opp["id"].(float64)), "Touched via library example", 0)
+	// _, _ = client.DeleteOpportunity(ctx, oid)
+}

examples/subtasks/main.go

@@ -0,0 +1,51 @@
+// Package main creates a parent task and attaches two subtasks using the
+// project-tasks API (POST /api/2.0/project/task/{id}.json).
+//
+//	export ONLYOFFICE_URL="https://your-instance.onlyoffice.com"
+//	export ONLYOFFICE_USER="admin@example.com"
+//	export ONLYOFFICE_PASS="your-password"
+//	export ONLYOFFICE_PROJECT_ID="123"
+//	go run ./examples/subtasks
+package main
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"os"
+
+	onlyoffice "github.com/eslider/go-onlyoffice"
+)
+
+func main() {
+	creds := onlyoffice.GetEnvironmentCredentials()
+	defaults := onlyoffice.GetEnvironmentDefaults()
+	if creds.Url == "" || defaults.ProjectID == "" {
+		fmt.Fprintln(os.Stderr, "ONLYOFFICE_URL and ONLYOFFICE_PROJECT_ID must be set")
+		os.Exit(1)
+	}
+
+	client := onlyoffice.NewClient(creds)
+	client.SetDefaults(defaults)
+	ctx := context.Background()
+
+	parent, err := client.AddTask(ctx, defaults.ProjectID, "Example parent", "Created by examples/subtasks", 0, "")
+	if err != nil {
+		log.Fatalf("add parent task: %v", err)
+	}
+	parentID := fmt.Sprint(parent["id"])
+	fmt.Printf("parent task id=%s\n", parentID)
+
+	for _, title := range []string{"first subtask", "second subtask"} {
+		st, err := client.AddSubtask(ctx, parentID, title)
+		if err != nil {
+			log.Fatalf("add subtask %q: %v", title, err)
+		}
+		fmt.Printf("  + subtask id=%v title=%v\n", st["id"], st["title"])
+	}
+
+	// Cleanup — uncomment once you verified the subtasks in the OnlyOffice UI.
+	// if _, err := client.DeleteTask(ctx, parentID); err != nil {
+	// 	log.Printf("cleanup: %v", err)
+	// }
+}

httpx.go

@@ -45,8 +45,63 @@ func (c *Client) authHeader() (string, error) {
 // Authenticate validates credentials and primes the token. Library users may
 // call this eagerly to surface auth errors at startup; otherwise the token is
 // fetched lazily on the first request.
+//
+// Prefer AuthenticateContext in long-running jobs — it honours cancellation.
 func (c *Client) Authenticate() error { return c.ensureToken() }
 
+// AuthenticateContext is the context-aware variant of Authenticate. If the
+// cached token is still valid it returns immediately; otherwise it performs a
+// POST to /api/2.0/authentication.json that is cancellable via ctx.
+//
+// This is the recommended entry point for long-running syncs (cron, watchers)
+// because it guarantees that a stalled auth call will not block the caller
+// past its deadline.
+func (c *Client) AuthenticateContext(ctx context.Context) error {
+	if c.token != nil && !time.Time(c.token.Expires).Before(time.Now()) {
+		return nil
+	}
+	body, err := json.Marshal(c.credentials)
+	if err != nil {
+		return fmt.Errorf("marshal credentials: %w", err)
+	}
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, c.baseURL()+"/api/2.0/authentication.json", bytes.NewReader(body))
+	if err != nil {
+		return err
+	}
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Accept", "application/json")
+	resp, err := c.client.Do(req)
+	if err != nil {
+		return fmt.Errorf("auth request: %w", err)
+	}
+	defer resp.Body.Close()
+	raw, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return err
+	}
+	if resp.StatusCode >= 400 {
+		return fmt.Errorf("auth: %d %s", resp.StatusCode, truncate(string(raw), 400))
+	}
+	var env struct {
+		Response *Token `json:"response"`
+	}
+	if err := json.Unmarshal(raw, &env); err != nil {
+		return fmt.Errorf("auth decode: %w", err)
+	}
+	if env.Response == nil || env.Response.Value == "" {
+		return fmt.Errorf("auth: empty token in response")
+	}
+	c.token = env.Response
+	return nil
+}
+
+// InvalidateToken clears the cached authentication token. The next request
+// (or call to Authenticate / AuthenticateContext) will re-authenticate.
+//
+// Use this to recover from a mid-sync 401 when the server has revoked or
+// rotated the session while the Expires timestamp still looks fresh locally.
+func (c *Client) InvalidateToken() { c.token = nil }
+
 // baseURL returns the configured base URL without trailing slash.
 func (c *Client) baseURL() string {
 	return strings.TrimRight(c.credentials.Url, "/")

httpx_test.go

@@ -1,194 +0,0 @@
-package onlyoffice
-
-// Unit tests for the form/multipart helpers and a few CRM/Calendar/Subtask
-// methods. These do not require a real OnlyOffice server — they spin up a
-// net/http/httptest.Server that emulates the expected endpoints.
-
-import (
-	"context"
-	"encoding/json"
-	"io"
-	"mime"
-	"mime/multipart"
-	"net/http"
-	"net/http/httptest"
-	"os"
-	"strings"
-	"testing"
-	"time"
-)
-
-// fakeServer wires a minimal OnlyOffice-like API: it always returns the same
-// token on /api/2.0/authentication.json and dispatches remaining requests via
-// the caller-supplied handler.
-func fakeServer(t *testing.T, h http.HandlerFunc) *httptest.Server {
-	t.Helper()
-	mux := http.NewServeMux()
-	mux.HandleFunc("/api/2.0/authentication.json", func(w http.ResponseWriter, r *http.Request) {
-		w.Header().Set("Content-Type", "application/json")
-		_, _ = io.WriteString(w, `{"response":{"token":"TEST_TOKEN","expires":"2099-01-01T00:00:00Z"}}`)
-	})
-	mux.HandleFunc("/", h)
-	return httptest.NewServer(mux)
-}
-
-// newTestClient builds a Client pointed at the test server with a primed token
-// so helpers skip the auth round-trip when the test does not exercise it.
-func newTestClient(srv *httptest.Server) *Client {
-	c := NewClient(Credentials{Url: srv.URL, User: "u", Password: "p"})
-	c.token = &Token{Value: "TEST_TOKEN", Expires: Time(time.Now().Add(time.Hour))}
-	return c
-}
-
-func TestAddSubtaskFormEncoded(t *testing.T) {
-	var gotPath, gotAuth, gotCT, gotBody string
-	srv := fakeServer(t, func(w http.ResponseWriter, r *http.Request) {
-		gotPath = r.URL.Path
-		gotAuth = r.Header.Get("Authorization")
-		gotCT = r.Header.Get("Content-Type")
-		b, _ := io.ReadAll(r.Body)
-		gotBody = string(b)
-		w.Header().Set("Content-Type", "application/json")
-		_, _ = io.WriteString(w, `{"response":{"id":99,"title":"child"}}`)
-	})
-	defer srv.Close()
-	c := newTestClient(srv)
-
-	out, err := c.AddSubtask(context.Background(), "42", "child")
-	if err != nil {
-		t.Fatalf("AddSubtask: %v", err)
-	}
-	if gotPath != "/api/2.0/project/task/42.json" {
-		t.Errorf("path = %q", gotPath)
-	}
-	if gotAuth != "TEST_TOKEN" {
-		t.Errorf("auth header = %q", gotAuth)
-	}
-	if !strings.HasPrefix(gotCT, "application/x-www-form-urlencoded") {
-		t.Errorf("content-type = %q", gotCT)
-	}
-	if gotBody != "title=child" {
-		t.Errorf("body = %q", gotBody)
-	}
-	if fm, ok := out["title"].(string); !ok || fm != "child" {
-		t.Errorf("out.title = %v", out["title"])
-	}
-}
-
-func TestAddEventUsesDefaultCalendar(t *testing.T) {
-	var gotPath, gotBody string
-	srv := fakeServer(t, func(w http.ResponseWriter, r *http.Request) {
-		gotPath = r.URL.Path
-		b, _ := io.ReadAll(r.Body)
-		gotBody = string(b)
-		w.Header().Set("Content-Type", "application/json")
-		_, _ = io.WriteString(w, `{"response":[{"id":"e1","name":"hi"}]}`)
-	})
-	defer srv.Close()
-	c := newTestClient(srv)
-	c.SetDefaults(Defaults{CalendarID: "7"})
-
-	ev, err := c.AddEvent(context.Background(), "", "hi", "2025-01-01T10:00:00Z", "2025-01-01T11:00:00Z", "desc", false)
-	if err != nil {
-		t.Fatalf("AddEvent: %v", err)
-	}
-	if gotPath != "/api/2.0/calendar/7/event.json" {
-		t.Errorf("path = %q", gotPath)
-	}
-	if !strings.Contains(gotBody, "name=hi") || !strings.Contains(gotBody, "isAllDayLong=false") {
-		t.Errorf("body = %q", gotBody)
-	}
-	if ev["id"] != "e1" {
-		t.Errorf("event id = %v", ev["id"])
-	}
-}
-
-func TestAddEventRequiresCalendar(t *testing.T) {
-	srv := fakeServer(t, func(w http.ResponseWriter, r *http.Request) {
-		t.Fatalf("server must not be hit without calendar id")
-	})
-	defer srv.Close()
-	c := newTestClient(srv)
-	if _, err := c.AddEvent(context.Background(), "", "t", "s", "e", "", false); err == nil {
-		t.Fatal("expected error when no calendar id and no default")
-	}
-}
-
-func TestListContactsTotal(t *testing.T) {
-	srv := fakeServer(t, func(w http.ResponseWriter, r *http.Request) {
-		if r.URL.Path != "/api/2.0/crm/contact/filter.json" {
-			t.Errorf("path = %q", r.URL.Path)
-		}
-		if r.URL.Query().Get("filterValue") != "acme" {
-			t.Errorf("filterValue = %q", r.URL.Query().Get("filterValue"))
-		}
-		w.Header().Set("Content-Type", "application/json")
-		_, _ = io.WriteString(w, `{"response":[{"id":1,"displayName":"ACME"}],"total":7}`)
-	})
-	defer srv.Close()
-	c := newTestClient(srv)
-
-	items, total, err := c.ListContacts(context.Background(), 50, 0, "acme")
-	if err != nil {
-		t.Fatalf("ListContacts: %v", err)
-	}
-	if total != 7 {
-		t.Errorf("total = %d", total)
-	}
-	if len(items) != 1 {
-		t.Fatalf("len(items) = %d", len(items))
-	}
-}
-
-func TestUploadOpportunityFileMultipart(t *testing.T) {
-	tmp := t.TempDir() + "/a.txt"
-	if err := writeFile(tmp, "hello"); err != nil {
-		t.Fatal(err)
-	}
-	var gotField, gotFilename, gotBody string
-	srv := fakeServer(t, func(w http.ResponseWriter, r *http.Request) {
-		ct := r.Header.Get("Content-Type")
-		if !strings.HasPrefix(ct, "multipart/form-data") {
-			t.Errorf("content-type = %q", ct)
-		}
-		_, params, err := mime.ParseMediaType(ct)
-		if err != nil {
-			t.Fatal(err)
-		}
-		mr := multipart.NewReader(r.Body, params["boundary"])
-		part, err := mr.NextPart()
-		if err != nil {
-			t.Fatal(err)
-		}
-		gotField = part.FormName()
-		gotFilename = part.FileName()
-		b, _ := io.ReadAll(part)
-		gotBody = string(b)
-		w.Header().Set("Content-Type", "application/json")
-		_, _ = io.WriteString(w, `{"response":{"id":1,"title":"a.txt"}}`)
-	})
-	defer srv.Close()
-	c := newTestClient(srv)
-
-	out, err := c.UploadOpportunityFile(context.Background(), "123", tmp)
-	if err != nil {
-		t.Fatalf("UploadOpportunityFile: %v", err)
-	}
-	if gotField != "file" || gotFilename != "a.txt" || gotBody != "hello" {
-		t.Errorf("multipart = field=%q filename=%q body=%q", gotField, gotFilename, gotBody)
-	}
-	if out["title"] != "a.txt" {
-		t.Errorf("out.title = %v", out["title"])
-	}
-}
-
-func writeFile(path, content string) error {
-	return os.WriteFile(path, []byte(content), 0o600)
-}
-
-func TestResponseFieldMissing(t *testing.T) {
-	_, err := responseField(json.RawMessage(`{"other":1}`), "response")
-	if err == nil {
-		t.Fatal("expected error on missing field")
-	}
-}

internal/applications/applications.go

@@ -212,7 +212,9 @@ func buildSummary(app Data, text string) string {
 	if m := regexp.MustCompile(`(?i)## Application Status\s*\n((?:[-*\[\]xX ].+\n?)+)`).FindStringSubmatch(text); len(m) > 1 {
 		lines = append(lines, "", "Status:", strings.TrimSpace(m[1]))
 	}
-	if m := regexp.MustCompile(`(?i)## (?:Fit Assessment|Match|Candidate Fit)\s*\n([\s\S]+?)(?=\n## |\z)`).FindStringSubmatch(text); len(m) > 1 {
+	// RE2 does not support lookahead; consume the trailing delimiter (\n## or EOS)
+	// with a non-capturing alternation — the captured group 1 stops right before it.
+	if m := regexp.MustCompile(`(?i)## (?:Fit Assessment|Match|Candidate Fit)\s*\n([\s\S]+?)(?:\n## |$)`).FindStringSubmatch(text); len(m) > 1 {
 		ft := strings.TrimSpace(m[1])
 		if len(ft) > 500 {
 			ft = ft[:500] + "..."

internal/applications/parse_test.go

@@ -20,3 +20,34 @@ func TestParseSalary(t *testing.T) {
 		t.Fatalf("daily: %v", v)
 	}
 }
+
+// TestBuildSummaryFitAssessment covers the RE2-safe replacement of a previously
+// lookahead-based regex that would panic at MustCompile time on Go regexp.
+func TestBuildSummaryFitAssessment(t *testing.T) {
+	app := Data{Position: "SRE", Company: "Acme", Folder: "/tmp"}
+	withNextSection := "## Fit Assessment\nGreat fit overall.\nStrong background.\n## Next section\nUnrelated."
+	summary := buildSummary(app, withNextSection)
+	if !contains(summary, "Fit Assessment:") {
+		t.Fatalf("missing header in summary:\n%s", summary)
+	}
+	if !contains(summary, "Great fit overall.") {
+		t.Fatalf("missing body in summary:\n%s", summary)
+	}
+	if contains(summary, "Unrelated.") {
+		t.Fatalf("bled into next section:\n%s", summary)
+	}
+	eof := "## Fit Assessment\nOnly content at EOF."
+	summary = buildSummary(app, eof)
+	if !contains(summary, "Only content at EOF.") {
+		t.Fatalf("EOF case missing body:\n%s", summary)
+	}
+}
+
+func contains(haystack, needle string) bool {
+	for i := 0; i+len(needle) <= len(haystack); i++ {
+		if haystack[i:i+len(needle)] == needle {
+			return true
+		}
+	}
+	return false
+}

onlyoffice.go

@@ -3,15 +3,17 @@ package onlyoffice
 // OnlyOffice client package
 
 import (
+	"bytes"
 	"encoding/json"
 	"fmt"
-	"github.com/google/go-querystring/query"
 	"io"
 	"net/http"
 	"os"
-	regexp "regexp"
+	"regexp"
 	"strings"
 	"time"
+
+	"github.com/google/go-querystring/query"
 )
 
 // NewClient API
@@ -295,7 +297,10 @@ type ProjectOwner struct {
 
 // String for Project to return title
 func (p Project) String() string {
-	return fmt.Sprintf(*p.Title)
+	if p.Title == nil {
+		return ""
+	}
+	return *p.Title
 }
 
 // Token OnlyOffice
@@ -353,16 +358,16 @@ func (r Request) GetMethod() string {
 
 // Query the OnlyOffice API
 //   - If request.Method is not set then it will default to GET
-//   - If request.Code is not nil then it will be marshaled to JSON
+//   - If request.Body is not nil then it will be marshaled to JSON (unless already []byte/string)
-//   - If request.Token is nil then it will get a token
+//   - If request.Token is nil then it will get (or reuse) a cached token
 //   - If request.Token is not nil then it will be used as Authorization header
 //   - If request.NoAuth is true then it will skip automatic authentication
-func (c *Client) Query(request Request, result interface{}) (err error) {
+//
-	var url = fmt.Sprintf("%s%s", c.credentials.Url, request.Uri)
+// The Debug field is preserved for backwards compatibility; it no longer
-	var rdr io.Reader = nil
+// changes behaviour — both branches used to unmarshal into the same target.
-	var jsonRequestBody string
+func (c *Client) Query(request Request, result interface{}) error {
+	url := c.credentials.Url + request.Uri
 
-	// Add query parameters if available
 	if request.Params != nil {
 		v, err := query.Values(request.Params)
 		if err != nil {
@@ -371,78 +376,62 @@ func (c *Client) Query(request Request, result interface{}) (err error) {
 		url = fmt.Sprintf("%s?%s", url, v.Encode())
 	}
 
-	// Create request
+	rdr, err := requestBodyReader(request.Body)
-	if request.Body != nil {
-		// Check request body if type is not []byte or string the marshal it to JSON
-		switch request.Body.(type) {
-		case []byte:
-			jsonRequestBody = string(request.Body.([]byte))
-			rdr = strings.NewReader(string(request.Body.([]byte)))
-		case string:
-			jsonRequestBody = request.Body.(string)
-			rdr = strings.NewReader(request.Body.(string))
-		default:
-			// Marshal to JSON
-			b, err := json.Marshal(request.Body)
 	if err != nil {
-				return fmt.Errorf("failed to marshal request body: %v", err)
+		return err
-			}
-			jsonRequestBody = string(b)
-			rdr = strings.NewReader(string(b))
-		}
 	}
 
 	req, err := http.NewRequest(request.GetMethod(), url, rdr)
 	if err != nil {
 		return err
 	}
-
 	req.Header.Set("Accept", "application/json")
 	req.Header.Set("Content-Type", "application/json")
 	req.Header.Set("Pragma", "no-cache")
 
-	// Get token if not set?
 	if !request.NoAuth {
-		// Get token if not set or expired
+		if err := c.ensureToken(); err != nil {
-		if c.token == nil || time.Time(c.token.Expires).Before(time.Now()) {
+			return fmt.Errorf("failed to authenticate: %w", err)
-			c.token, err = c.Auth(c.credentials)
-			if err != nil {
-				return fmt.Errorf("failed to authenticate: %v", err)
 		}
 	}
-	}
+	switch {
-
+	case request.Token != nil:
-	// Set token if available
-	if request.Token != nil {
 		req.Header.Set("Authorization", *request.Token)
-	} else {
+	case c.token != nil:
-		// Set token from a client if available
-		if c.token != nil {
 		req.Header.Set("Authorization", c.token.Value)
 	}
-	}
 
 	resp, err := c.client.Do(req)
 	if err != nil {
-		return fmt.Errorf("failed to send request: %v", err)
+		return fmt.Errorf("failed to send request: %w", err)
 	}
 	defer resp.Body.Close()
 
 	if result == nil {
 		return nil
 	}
-	if request.Debug {
-		// Rewind reader
-		_ = jsonRequestBody
-		var buf = new(strings.Builder)
-		io.Copy(buf, resp.Body)
-		js := buf.String()
-		return json.Unmarshal([]byte(js), result)
-	} else {
-		// Unmarshal response using reader
 	return json.NewDecoder(resp.Body).Decode(result)
-	}
+}
 
+// requestBodyReader normalises Query() body input into an io.Reader.
+// []byte and string are passed through verbatim; everything else is marshalled
+// to JSON. Returns (nil, nil) for a nil body.
+func requestBodyReader(body any) (io.Reader, error) {
+	if body == nil {
+		return nil, nil
+	}
+	switch b := body.(type) {
+	case []byte:
+		return bytes.NewReader(b), nil
+	case string:
+		return strings.NewReader(b), nil
+	default:
+		j, err := json.Marshal(body)
+		if err != nil {
+			return nil, fmt.Errorf("failed to marshal request body: %w", err)
+		}
+		return bytes.NewReader(j), nil
+	}
 }
 
 // Auth to authenticate by getting a token using credentials
@@ -489,7 +478,7 @@ func (c *Client) GetProjects() (list Projects, err error) {
 func (c *Client) GetProjectMilestones(project *Project) ([]*Milestone, error) {
 	var list []*Milestone
 
-	err := c.Query(Request{Uri: fmt.Sprintf(`/api/2.0/project/%d/milestone`, *project.ID), Debug: false},
+	err := c.Query(Request{Uri: fmt.Sprintf(`/api/2.0/project/%d/milestone`, *project.ID)},
 		&struct {
 			MetaResponse `json:",inline"`
 			//Response     *[]*Milestone
@@ -656,9 +645,7 @@ func (c *Client) UpdateProjectTask(req ProjectTaskUpdateRequest) (task *Task, er
 			Uri:    fmt.Sprintf("/api/2.0/project/task/%d.json", req.ID),
 			Method: "PUT",
 			Body:   req,
-			Debug:  true,
 		}, &struct {
-			//MetaResponse `json:",inline"`
 			Response *Task `json:"response"`
 		}{task})
 }
@@ -692,10 +679,8 @@ func (c *Client) GetTasks(req ProjectGetTasksRequest) (tasks []*Task, err error)
 		Request{
 			Uri:    "/api/2.0/project/task/filter.json",
 			Params: req,
-			Debug:  true,
 		},
 		&struct {
-			//MetaResponse `json:",inline"`
 			Response *[]*Task `json:"response"`
 		}{&tasks})
 }

unit_test.go

@@ -0,0 +1,133 @@
+package onlyoffice
+
+// Pure unit tests — no network, no fake vendor HTTP servers.
+// Protocol-level behaviour is covered by *_integration_test.go (build-tagged).
+
+import (
+	"context"
+	"encoding/json"
+	"testing"
+	"time"
+)
+
+func TestResponseFieldMissing(t *testing.T) {
+	if _, err := responseField(json.RawMessage(`{"other":1}`), "response"); err == nil {
+		t.Fatal("expected error on missing field")
+	}
+}
+
+func TestResponseFieldPresent(t *testing.T) {
+	raw, err := responseField(json.RawMessage(`{"response":[1,2,3],"other":9}`), "response")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if string(raw) != "[1,2,3]" {
+		t.Errorf("got %s", string(raw))
+	}
+}
+
+func TestRequestBodyReaderNil(t *testing.T) {
+	r, err := requestBodyReader(nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if r != nil {
+		t.Errorf("expected nil reader for nil body, got %T", r)
+	}
+}
+
+func TestRequestBodyReaderBytes(t *testing.T) {
+	r, err := requestBodyReader([]byte(`{"k":1}`))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if r == nil {
+		t.Fatal("nil reader")
+	}
+}
+
+func TestRequestBodyReaderStruct(t *testing.T) {
+	type payload struct {
+		Name string `json:"name"`
+	}
+	r, err := requestBodyReader(payload{Name: "x"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	buf := make([]byte, 64)
+	n, _ := r.Read(buf)
+	if string(buf[:n]) != `{"name":"x"}` {
+		t.Errorf("got %q", string(buf[:n]))
+	}
+}
+
+func TestProjectStringNilSafe(t *testing.T) {
+	var p Project
+	if got := p.String(); got != "" {
+		t.Errorf("nil Title should yield empty string, got %q", got)
+	}
+	title := "my project"
+	p.Title = &title
+	if got := p.String(); got != "my project" {
+		t.Errorf("got %q", got)
+	}
+	titleWithPercent := "100% coverage"
+	p.Title = &titleWithPercent
+	if got := p.String(); got != "100% coverage" {
+		t.Errorf("Sprintf format-string regression: got %q", got)
+	}
+}
+
+func TestAuthenticateContextRespectsCancellation(t *testing.T) {
+	// Point the client at a routable-but-unresponsive endpoint (TEST-NET-1
+	// per RFC 5737) and cancel the context almost immediately. The test
+	// verifies ctx plumbing, not OnlyOffice protocol — no vendor mock.
+	c := NewClient(Credentials{Url: "http://192.0.2.1:9", User: "u", Password: "p"})
+	ctx, cancel := context.WithTimeout(context.Background(), 25*time.Millisecond)
+	defer cancel()
+	if err := c.AuthenticateContext(ctx); err == nil {
+		t.Fatal("expected error on context timeout against unreachable endpoint")
+	}
+}
+
+func TestInvalidateTokenIsIdempotent(t *testing.T) {
+	c := NewClient(Credentials{Url: "http://example.invalid", User: "u", Password: "p"})
+	c.InvalidateToken()
+	c.InvalidateToken()
+	if c.token != nil {
+		t.Fatal("token should remain nil after double invalidate")
+	}
+}
+
+func TestGetEnvironmentCredentialsAliases(t *testing.T) {
+	t.Setenv("ONLYOFFICE_URL", "")
+	t.Setenv("ONLYOFFICE_HOST", "https://example/")
+	t.Setenv("ONLYOFFICE_USER", "")
+	t.Setenv("ONLYOFFICE_NAME", "alice")
+	t.Setenv("ONLYOFFICE_PASS", "")
+	t.Setenv("ONLYOFFICE_PASSWORD", "s3cret")
+	c := GetEnvironmentCredentials()
+	if c.Url != "https://example" {
+		t.Errorf("Url alias not applied / trailing slash not trimmed: %q", c.Url)
+	}
+	if c.User != "alice" {
+		t.Errorf("User alias not applied: %q", c.User)
+	}
+	if c.Password != "s3cret" {
+		t.Errorf("Password alias not applied: %q", c.Password)
+	}
+}
+
+func TestGetEnvironmentDefaultsFallbacks(t *testing.T) {
+	t.Setenv("ONLYOFFICE_CALENDAR_ID", "")
+	t.Setenv("ONLYOFFICE_PROJECT_ID", "")
+	t.Setenv("ONLYOFFICE_CALENDAR_PROJECT_ID", "")
+	d := GetEnvironmentDefaults()
+	if d.CalendarID != "1" || d.ProjectID != "33" {
+		t.Errorf("defaults: %+v", d)
+	}
+	t.Setenv("ONLYOFFICE_CALENDAR_PROJECT_ID", "7")
+	if got := GetEnvironmentDefaults().ProjectID; got != "7" {
+		t.Errorf("CalendarProjectId alias: %q", got)
+	}
+}