Initial commit: TravelHub multi-tenant flight booking platform

Angular + Go + PostgreSQL sample with strict per-tenant isolation. - Backend: Go API (basic auth, tenant-scoped repository layer, pgx pool) - Frontend: Angular 22 SPA (search, checkout, bookings, dashboard) - Database: schema, seed data and demo bookings migrations - Tests: 311 across Go (integration), Angular (unit) and Playwright (e2e), plus a generated evidence report with PDF export - Security: whitebox VAPT report under security/ Secrets (.env, tokens, DB credentials) are git-ignored. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-09-13 11:38:01 +05:30
commit 4d3eb18a6c
129 changed files with 25424 additions and 0 deletions
@@ -0,0 +1,342 @@
+package middleware_test
+
+import (
+	"encoding/base64"
+	"io"
+	"log/slog"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+
+	"github.com/travelswitch/travelhub/backend/internal/auth"
+	"github.com/travelswitch/travelhub/backend/internal/middleware"
+	"github.com/travelswitch/travelhub/backend/internal/testsupport"
+)
+
+func quietLogger() *slog.Logger {
+	return slog.New(slog.NewTextHandler(io.Discard, nil))
+}
+
+func basic(email, password string) string {
+	return "Basic " + base64.StdEncoding.EncodeToString([]byte(email+":"+password))
+}
+
+// guarded wraps a handler that records the identity the middleware resolved.
+func guarded(f *testsupport.Fixture, seen *auth.Identity) http.Handler {
+	inner := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if id, err := auth.FromContext(r.Context()); err == nil && seen != nil {
+			*seen = id
+		}
+		w.WriteHeader(http.StatusOK)
+	})
+	return middleware.BasicAuth(f.Repo, quietLogger())(inner)
+}
+
+func TestBasicAuthAcceptsValidCredentials(t *testing.T) {
+	f := testsupport.Setup(t)
+
+	var got auth.Identity
+	req := httptest.NewRequest(http.MethodGet, "/api/session", nil)
+	req.Header.Set("Authorization", basic(f.Agent.Email, testsupport.Password))
+	req.Header.Set(middleware.TenantHeader, f.Tenant.Slug)
+
+	rec := httptest.NewRecorder()
+	guarded(f, &got).ServeHTTP(rec, req)
+
+	if rec.Code != http.StatusOK {
+		t.Fatalf("status = %d, want 200 (body: %s)", rec.Code, rec.Body)
+	}
+	if got.User.ID != f.Agent.ID {
+		t.Errorf("resolved user %s, want %s", got.User.ID, f.Agent.ID)
+	}
+	if got.Tenant.ID != f.Tenant.ID {
+		t.Errorf("resolved tenant %s, want %s", got.Tenant.ID, f.Tenant.ID)
+	}
+}
+
+func TestBasicAuthIsCaseInsensitiveOnEmail(t *testing.T) {
+	f := testsupport.Setup(t)
+
+	req := httptest.NewRequest(http.MethodGet, "/api/session", nil)
+	req.Header.Set("Authorization", basic(strings.ToUpper(f.Agent.Email), testsupport.Password))
+	req.Header.Set(middleware.TenantHeader, f.Tenant.Slug)
+
+	rec := httptest.NewRecorder()
+	guarded(f, nil).ServeHTTP(rec, req)
+
+	if rec.Code != http.StatusOK {
+		t.Errorf("status = %d, want 200", rec.Code)
+	}
+}
+
+func TestBasicAuthRejections(t *testing.T) {
+	f := testsupport.Setup(t)
+	other := testsupport.Setup(t)
+
+	cases := []struct {
+		name       string
+		authHeader string
+		tenant     string
+		wantStatus int
+	}{
+		{
+			name:       "no credentials at all",
+			tenant:     f.Tenant.Slug,
+			wantStatus: http.StatusUnauthorized,
+		},
+		{
+			name:       "wrong password",
+			authHeader: basic(f.Agent.Email, "not-the-password"),
+			tenant:     f.Tenant.Slug,
+			wantStatus: http.StatusUnauthorized,
+		},
+		{
+			name:       "unknown user",
+			authHeader: basic("nobody@nowhere.test", testsupport.Password),
+			tenant:     f.Tenant.Slug,
+			wantStatus: http.StatusUnauthorized,
+		},
+		{
+			name:       "unknown tenant",
+			authHeader: basic(f.Agent.Email, testsupport.Password),
+			tenant:     "no-such-agency",
+			wantStatus: http.StatusUnauthorized,
+		},
+		{
+			// The central rule: right password, wrong agency.
+			name:       "valid credentials against another tenant",
+			authHeader: basic(f.Agent.Email, testsupport.Password),
+			tenant:     other.Tenant.Slug,
+			wantStatus: http.StatusUnauthorized,
+		},
+		{
+			name:       "missing tenant header",
+			authHeader: basic(f.Agent.Email, testsupport.Password),
+			tenant:     "",
+			wantStatus: http.StatusBadRequest,
+		},
+		{
+			name:       "malformed authorization header",
+			authHeader: "Bearer some.jwt.token",
+			tenant:     f.Tenant.Slug,
+			wantStatus: http.StatusUnauthorized,
+		},
+	}
+
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			req := httptest.NewRequest(http.MethodGet, "/api/session", nil)
+			if tc.authHeader != "" {
+				req.Header.Set("Authorization", tc.authHeader)
+			}
+			if tc.tenant != "" {
+				req.Header.Set(middleware.TenantHeader, tc.tenant)
+			}
+
+			rec := httptest.NewRecorder()
+			guarded(f, nil).ServeHTTP(rec, req)
+
+			if rec.Code != tc.wantStatus {
+				t.Errorf("status = %d, want %d (body: %s)", rec.Code, tc.wantStatus, rec.Body)
+			}
+		})
+	}
+}
+
+func TestBasicAuthRefusesSuspendedTenant(t *testing.T) {
+	f := testsupport.Setup(t)
+	f.Suspend(t)
+
+	req := httptest.NewRequest(http.MethodGet, "/api/session", nil)
+	req.Header.Set("Authorization", basic(f.Agent.Email, testsupport.Password))
+	req.Header.Set(middleware.TenantHeader, f.Tenant.Slug)
+
+	rec := httptest.NewRecorder()
+	guarded(f, nil).ServeHTTP(rec, req)
+
+	if rec.Code != http.StatusUnauthorized {
+		t.Errorf("status = %d, want 401 for a suspended tenant", rec.Code)
+	}
+}
+
+// Sending WWW-Authenticate would make the browser pop its own login dialog over
+// the Angular sign-in screen, so its absence is a deliberate contract.
+func TestUnauthorizedDoesNotTriggerTheBrowserDialog(t *testing.T) {
+	f := testsupport.Setup(t)
+
+	req := httptest.NewRequest(http.MethodGet, "/api/session", nil)
+	req.Header.Set("Authorization", basic(f.Agent.Email, "wrong"))
+	req.Header.Set(middleware.TenantHeader, f.Tenant.Slug)
+
+	rec := httptest.NewRecorder()
+	guarded(f, nil).ServeHTTP(rec, req)
+
+	if got := rec.Header().Get("WWW-Authenticate"); got != "" {
+		t.Errorf("WWW-Authenticate = %q, want it absent", got)
+	}
+	if ct := rec.Header().Get("Content-Type"); ct != "application/json" {
+		t.Errorf("Content-Type = %q, want application/json", ct)
+	}
+}
+
+// Deployments that give each agency a subdomain need no client changes.
+func TestTenantFallsBackToSubdomain(t *testing.T) {
+	f := testsupport.Setup(t)
+
+	req := httptest.NewRequest(http.MethodGet, "/api/session", nil)
+	req.Header.Set("Authorization", basic(f.Agent.Email, testsupport.Password))
+	req.Host = f.Tenant.Slug + ".travelhub.example.com:8080"
+
+	rec := httptest.NewRecorder()
+	guarded(f, nil).ServeHTTP(rec, req)
+
+	if rec.Code != http.StatusOK {
+		t.Errorf("status = %d, want 200 resolving the tenant from the subdomain", rec.Code)
+	}
+}
+
+func TestTenantHeaderBeatsSubdomain(t *testing.T) {
+	f := testsupport.Setup(t)
+	other := testsupport.Setup(t)
+
+	var got auth.Identity
+	req := httptest.NewRequest(http.MethodGet, "/api/session", nil)
+	req.Header.Set("Authorization", basic(f.Agent.Email, testsupport.Password))
+	req.Header.Set(middleware.TenantHeader, f.Tenant.Slug)
+	req.Host = other.Tenant.Slug + ".travelhub.example.com"
+
+	rec := httptest.NewRecorder()
+	guarded(f, &got).ServeHTTP(rec, req)
+
+	if rec.Code != http.StatusOK {
+		t.Fatalf("status = %d, want 200", rec.Code)
+	}
+	if got.Tenant.ID != f.Tenant.ID {
+		t.Error("the subdomain overrode the explicit tenant header")
+	}
+}
+
+func TestRequireAdmin(t *testing.T) {
+	f := testsupport.Setup(t)
+
+	adminOnly := middleware.BasicAuth(f.Repo, quietLogger())(
+		middleware.RequireAdmin(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
+			w.WriteHeader(http.StatusOK)
+		})),
+	)
+
+	cases := []struct {
+		name  string
+		email string
+		want  int
+	}{
+		{"admin passes", f.Admin.Email, http.StatusOK},
+		{"agent is refused", f.Agent.Email, http.StatusForbidden},
+	}
+
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			req := httptest.NewRequest(http.MethodGet, "/api/admin", nil)
+			req.Header.Set("Authorization", basic(tc.email, testsupport.Password))
+			req.Header.Set(middleware.TenantHeader, f.Tenant.Slug)
+
+			rec := httptest.NewRecorder()
+			adminOnly.ServeHTTP(rec, req)
+
+			if rec.Code != tc.want {
+				t.Errorf("status = %d, want %d", rec.Code, tc.want)
+			}
+		})
+	}
+}
+
+func TestCORS(t *testing.T) {
+	allowed := []string{"http://localhost:4200", "https://app.example.com/"}
+	ok := http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
+		w.WriteHeader(http.StatusOK)
+	})
+	handler := middleware.CORS(allowed)(ok)
+
+	t.Run("echoes an allowed origin", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodGet, "/api/flights", nil)
+		req.Header.Set("Origin", "http://localhost:4200")
+
+		rec := httptest.NewRecorder()
+		handler.ServeHTTP(rec, req)
+
+		if got := rec.Header().Get("Access-Control-Allow-Origin"); got != "http://localhost:4200" {
+			t.Errorf("Allow-Origin = %q", got)
+		}
+		if got := rec.Header().Get("Vary"); !strings.Contains(got, "Origin") {
+			t.Errorf("Vary = %q, want it to include Origin", got)
+		}
+		if got := rec.Header().Get("Access-Control-Allow-Headers"); !strings.Contains(got, middleware.TenantHeader) {
+			t.Errorf("Allow-Headers = %q, want it to include %s", got, middleware.TenantHeader)
+		}
+	})
+
+	t.Run("tolerates a trailing slash in configuration", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodGet, "/api/flights", nil)
+		req.Header.Set("Origin", "https://app.example.com")
+
+		rec := httptest.NewRecorder()
+		handler.ServeHTTP(rec, req)
+
+		if got := rec.Header().Get("Access-Control-Allow-Origin"); got != "https://app.example.com" {
+			t.Errorf("Allow-Origin = %q, want the origin echoed", got)
+		}
+	})
+
+	t.Run("ignores an origin that is not on the list", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodGet, "/api/flights", nil)
+		req.Header.Set("Origin", "https://evil.example.com")
+
+		rec := httptest.NewRecorder()
+		handler.ServeHTTP(rec, req)
+
+		if got := rec.Header().Get("Access-Control-Allow-Origin"); got != "" {
+			t.Errorf("Allow-Origin = %q, want it absent", got)
+		}
+	})
+
+	t.Run("answers preflight without reaching the handler", func(t *testing.T) {
+		reached := false
+		h := middleware.CORS(allowed)(http.HandlerFunc(func(http.ResponseWriter, *http.Request) {
+			reached = true
+		}))
+
+		req := httptest.NewRequest(http.MethodOptions, "/api/bookings", nil)
+		req.Header.Set("Origin", "http://localhost:4200")
+
+		rec := httptest.NewRecorder()
+		h.ServeHTTP(rec, req)
+
+		if rec.Code != http.StatusNoContent {
+			t.Errorf("status = %d, want 204", rec.Code)
+		}
+		if reached {
+			t.Error("preflight should short-circuit before the handler")
+		}
+	})
+}
+
+func TestRecovererTurnsPanicIntoFiveHundred(t *testing.T) {
+	boom := http.HandlerFunc(func(http.ResponseWriter, *http.Request) {
+		panic("something went very wrong")
+	})
+	handler := middleware.Recoverer(quietLogger())(boom)
+
+	req := httptest.NewRequest(http.MethodGet, "/api/flights", nil)
+	rec := httptest.NewRecorder()
+
+	// The point is that this call returns rather than taking the process down.
+	handler.ServeHTTP(rec, req)
+
+	if rec.Code != http.StatusInternalServerError {
+		t.Errorf("status = %d, want 500", rec.Code)
+	}
+	if !strings.Contains(rec.Body.String(), "internal server error") {
+		t.Errorf("body = %s, want a JSON error", rec.Body)
+	}
+}