Passwort und Reset Passwort tests

2025-08-13 08:37:53 +02:00
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+# Password Reset Tests Documentation
+
+Diese Dokumentation beschreibt die umfassenden Tests für das Password-Reset-System.
+
+## Test-Übersicht
+
+Das Password-Reset-System wurde mit 16 umfassenden Tests abgedeckt:
+
+### 1. API-Handler-Tests
+
+#### RequestPasswordReset Tests:
+- `TestRequestPasswordReset_Success` - Erfolgreiche Password-Reset-Anfrage mit `redirect_url`
+- `TestRequestPasswordReset_WithoutRedirectURL` - Erfolgreich ohne `redirect_url` (Fallback wird verwendet)
+- `TestRequestPasswordReset_NonExistentEmail` - Nicht existierende E-Mail (Sicherheitsverhalten: Keine Information preisgeben)
+- `TestRequestPasswordReset_InvalidEmail` - Ungültiges E-Mail-Format (Validation-Fehler)
+
+#### ValidateResetToken Tests:
+- `TestValidateResetToken_Success` - Gültiger Token wird korrekt validiert
+- `TestValidateResetToken_InvalidToken` - Ungültiger Token wird abgelehnt
+- `TestValidateResetToken_ExpiredToken` - Abgelaufener Token wird abgelehnt
+
+#### ResetPassword Tests:
+- `TestResetPassword_Success` - Erfolgreiches Zurücksetzen des Passworts
+- `TestResetPassword_InvalidToken` - Ungültiger Token wird abgelehnt
+- `TestResetPassword_ShortPassword` - Zu kurzes Passwort wird abgelehnt (< 6 Zeichen)
+- `TestResetPassword_ExpiredToken` - Abgelaufener Token wird abgelehnt
+
+### 2. User-Model-Tests
+
+#### Password-Reset-Hash Management:
+- `TestUser_SetPasswordResetHash` - Setzt Reset-Hash und Ablaufzeit (14 Tage)
+- `TestUser_ClearPasswordResetHash` - Entfernt Reset-Hash und Ablaufzeit
+- `TestUser_IsResetHashValid` - Validiert Reset-Hash gegen Zeit und Wert
+
+#### Database-Query Tests:
+- `TestUser_FindByResetHash` - Findet User anhand gültigem Reset-Hash
+- `TestUser_FindByEmail` - Findet User anhand E-Mail-Adresse
+
+## Test-Setup
+
+### Database Migration
+- Jeder Test führt automatisch `MigrateStructure()` aus um sicherzustellen, dass die `reset_pw_hash` und `reset_pw_hash_expires` Felder existieren
+
+### Test-Isolation  
+- Eindeutige E-Mail-Adressen per Test über `rand.Intn(100000)` um UNIQUE-Constraint-Konflikte zu vermeiden
+- SQLite In-Memory-Datenbank für schnelle Test-Ausführung
+
+### Test-Daten
+- Generierte Test-User mit MD5-gehashten Passwörtern (wie im echten System)
+- Realistische Reset-Token-Generierung und Zeitstempel
+
+## Sicherheits-Tests
+
+### E-Mail-Enumeration-Schutz
+- Tests stellen sicher, dass bei nicht-existierenden E-Mail-Adressen dieselbe Erfolgsmeldung zurückgegeben wird
+- Keine Information wird preisgegeben, ob ein Account existiert oder nicht
+
+### Token-Sicherheit
+- Token-Ablauf wird korrekt geprüft (14 Tage)
+- Ungültige Tokens werden sicher abgelehnt
+- Token werden nach erfolgreichem Reset automatisch gelöscht
+
+### Input-Validation
+- E-Mail-Format-Validierung
+- Passwort-Mindestlänge (6 Zeichen)
+- Token-Presence-Validation
+
+## Test-Ausführung
+
+```bash
+# Alle Password-Reset-Tests ausführen
+go test ./user -v -run ".*Reset.*"
+
+# Einzelnen Test ausführen
+go test ./user -v -run "TestRequestPasswordReset_Success"
+
+# Tests mit frischer Database bei jedem Lauf
+go test ./user -v -run ".*Reset.*" -count=1
+```
+
+## Test-Ergebnisse
+
+Alle 16 Tests bestehen erfolgreich:
+- ✅ API-Handler-Tests (11 Tests)
+- ✅ User-Model-Tests (5 Tests)
+- ✅ Sicherheits-Tests (integriert)
+- ✅ Database-Integration-Tests (integriert)
+
+## Abgedeckte Szenarien
+
+1. **Happy Path**: Normale Password-Reset-Workflows
+2. **Error Cases**: Ungültige Eingaben, abgelaufene Token
+3. **Security Cases**: E-Mail-Enumeration-Schutz, Token-Sicherheit
+4. **Edge Cases**: Fehlende Parameter, Fallback-Verhalten
+5. **Database Integration**: Migration, CRUD-Operationen, Constraints
+
+Die Test-Suite gewährleistet eine vollständige Abdeckung aller Password-Reset-Funktionen mit fokus auf Sicherheit und Benutzerfreundlichkeit.
@@ -0,0 +1,453 @@
+package user
+
+import (
+	"bamort/database"
+	"bytes"
+	"crypto/md5"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"math/rand"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func setupTestUser(t *testing.T) User {
+	database.SetupTestDB()
+	
+	// Migrate User structure to ensure reset password fields exist
+	err := MigrateStructure()
+	require.NoError(t, err, "Failed to migrate user structure")
+	
+	// Generate unique email for each test to avoid conflicts
+	randomSuffix := rand.Intn(100000)
+	user := User{
+		Username:     fmt.Sprintf("testuser_reset_%d", randomSuffix),
+		PasswordHash: "testpassword123",
+		Email:        fmt.Sprintf("test.reset.%d@example.com", randomSuffix),
+	}
+
+	// Hash password like in RegisterUser
+	hashedPassword := md5.Sum([]byte(user.PasswordHash))
+	user.PasswordHash = hex.EncodeToString(hashedPassword[:])
+	
+	err = user.Create()
+	require.NoError(t, err, "Failed to create test user")
+	
+	return user
+}
+
+func TestRequestPasswordReset_Success(t *testing.T) {
+	user := setupTestUser(t)
+	
+	// Setup Gin router
+	gin.SetMode(gin.TestMode)
+	router := gin.New()
+	router.POST("/password-reset/request", RequestPasswordReset)
+
+	// Test data
+	requestData := map[string]interface{}{
+		"email":        user.Email,
+		"redirect_url": "http://localhost:3000",
+	}
+	jsonData, _ := json.Marshal(requestData)
+
+	// Create request
+	req, _ := http.NewRequest("POST", "/password-reset/request", bytes.NewBuffer(jsonData))
+	req.Header.Set("Content-Type", "application/json")
+	
+	// Execute request
+	w := httptest.NewRecorder()
+	router.ServeHTTP(w, req)
+
+	// Assertions
+	assert.Equal(t, http.StatusOK, w.Code)
+	
+	var response map[string]interface{}
+	err := json.Unmarshal(w.Body.Bytes(), &response)
+	require.NoError(t, err)
+	
+	assert.Contains(t, response["message"], "Falls ein Account mit dieser E-Mail-Adresse existiert")
+
+	// Check that user has reset hash set in database
+	var dbUser User
+	err = dbUser.FindByEmail(user.Email)
+	require.NoError(t, err)
+	
+	assert.NotNil(t, dbUser.ResetPwHash, "Reset hash should be set")
+	assert.NotNil(t, dbUser.ResetPwHashExpires, "Reset expiry should be set")
+	assert.True(t, dbUser.ResetPwHashExpires.After(time.Now()), "Reset expiry should be in future")
+}
+
+func TestRequestPasswordReset_WithoutRedirectURL(t *testing.T) {
+	user := setupTestUser(t)
+	
+	gin.SetMode(gin.TestMode)
+	router := gin.New()
+	router.POST("/password-reset/request", RequestPasswordReset)
+
+	// Test data without redirect_url
+	requestData := map[string]interface{}{
+		"email": user.Email,
+	}
+	jsonData, _ := json.Marshal(requestData)
+
+	req, _ := http.NewRequest("POST", "/password-reset/request", bytes.NewBuffer(jsonData))
+	req.Header.Set("Content-Type", "application/json")
+	
+	w := httptest.NewRecorder()
+	router.ServeHTTP(w, req)
+
+	// Should still work with fallback URL
+	assert.Equal(t, http.StatusOK, w.Code)
+}
+
+func TestRequestPasswordReset_NonExistentEmail(t *testing.T) {
+	database.SetupTestDB()
+	
+	gin.SetMode(gin.TestMode)
+	router := gin.New()
+	router.POST("/password-reset/request", RequestPasswordReset)
+
+	requestData := map[string]interface{}{
+		"email":        "nonexistent@example.com",
+		"redirect_url": "http://localhost:3000",
+	}
+	jsonData, _ := json.Marshal(requestData)
+
+	req, _ := http.NewRequest("POST", "/password-reset/request", bytes.NewBuffer(jsonData))
+	req.Header.Set("Content-Type", "application/json")
+	
+	w := httptest.NewRecorder()
+	router.ServeHTTP(w, req)
+
+	// Should return success to prevent email enumeration
+	assert.Equal(t, http.StatusOK, w.Code)
+	
+	var response map[string]interface{}
+	err := json.Unmarshal(w.Body.Bytes(), &response)
+	require.NoError(t, err)
+	assert.Contains(t, response["message"], "Falls ein Account mit dieser E-Mail-Adresse existiert")
+}
+
+func TestRequestPasswordReset_InvalidEmail(t *testing.T) {
+	database.SetupTestDB()
+	
+	gin.SetMode(gin.TestMode)
+	router := gin.New()
+	router.POST("/password-reset/request", RequestPasswordReset)
+
+	requestData := map[string]interface{}{
+		"email":        "invalid-email-format",
+		"redirect_url": "http://localhost:3000",
+	}
+	jsonData, _ := json.Marshal(requestData)
+
+	req, _ := http.NewRequest("POST", "/password-reset/request", bytes.NewBuffer(jsonData))
+	req.Header.Set("Content-Type", "application/json")
+	
+	w := httptest.NewRecorder()
+	router.ServeHTTP(w, req)
+
+	// Should return 400 for invalid email format
+	assert.Equal(t, http.StatusBadRequest, w.Code)
+}
+
+func TestValidateResetToken_Success(t *testing.T) {
+	user := setupTestUser(t)
+	
+	// Set reset hash
+	resetHash := "test_reset_hash_123456789"
+	err := user.SetPasswordResetHash(resetHash)
+	require.NoError(t, err)
+
+	gin.SetMode(gin.TestMode)
+	router := gin.New()
+	router.GET("/password-reset/validate/:token", ValidateResetToken)
+
+	req, _ := http.NewRequest("GET", "/password-reset/validate/"+resetHash, nil)
+	
+	w := httptest.NewRecorder()
+	router.ServeHTTP(w, req)
+
+	assert.Equal(t, http.StatusOK, w.Code)
+	
+	var response map[string]interface{}
+	err = json.Unmarshal(w.Body.Bytes(), &response)
+	require.NoError(t, err)
+	
+	assert.True(t, response["valid"].(bool))
+	assert.Equal(t, user.Username, response["username"])
+	assert.NotNil(t, response["expires"])
+}
+
+func TestValidateResetToken_InvalidToken(t *testing.T) {
+	database.SetupTestDB()
+	
+	gin.SetMode(gin.TestMode)
+	router := gin.New()
+	router.GET("/password-reset/validate/:token", ValidateResetToken)
+
+	req, _ := http.NewRequest("GET", "/password-reset/validate/invalid_token", nil)
+	
+	w := httptest.NewRecorder()
+	router.ServeHTTP(w, req)
+
+	assert.Equal(t, http.StatusBadRequest, w.Code)
+}
+
+func TestValidateResetToken_ExpiredToken(t *testing.T) {
+	user := setupTestUser(t)
+	
+	// Set expired reset hash
+	resetHash := "expired_reset_hash_123456789"
+	expiredTime := time.Now().Add(-1 * time.Hour) // 1 hour ago
+	user.ResetPwHash = &resetHash
+	user.ResetPwHashExpires = &expiredTime
+	err := user.Save()
+	require.NoError(t, err)
+
+	gin.SetMode(gin.TestMode)
+	router := gin.New()
+	router.GET("/password-reset/validate/:token", ValidateResetToken)
+
+	req, _ := http.NewRequest("GET", "/password-reset/validate/"+resetHash, nil)
+	
+	w := httptest.NewRecorder()
+	router.ServeHTTP(w, req)
+
+	assert.Equal(t, http.StatusBadRequest, w.Code)
+}
+
+func TestResetPassword_Success(t *testing.T) {
+	user := setupTestUser(t)
+	originalPassword := user.PasswordHash
+	
+	// Set reset hash
+	resetHash := "test_reset_hash_for_password_change"
+	err := user.SetPasswordResetHash(resetHash)
+	require.NoError(t, err)
+
+	gin.SetMode(gin.TestMode)
+	router := gin.New()
+	router.POST("/password-reset/reset", ResetPassword)
+
+	requestData := map[string]interface{}{
+		"token":        resetHash,
+		"new_password": "new_secure_password123",
+	}
+	jsonData, _ := json.Marshal(requestData)
+
+	req, _ := http.NewRequest("POST", "/password-reset/reset", bytes.NewBuffer(jsonData))
+	req.Header.Set("Content-Type", "application/json")
+	
+	w := httptest.NewRecorder()
+	router.ServeHTTP(w, req)
+
+	assert.Equal(t, http.StatusOK, w.Code)
+	
+	var response map[string]interface{}
+	err = json.Unmarshal(w.Body.Bytes(), &response)
+	require.NoError(t, err)
+	assert.Equal(t, "Passwort erfolgreich zurückgesetzt", response["message"])
+
+	// Verify password was changed and reset hash was cleared
+	var dbUser User
+	err = dbUser.FindByEmail(user.Email)
+	require.NoError(t, err)
+	
+	assert.NotEqual(t, originalPassword, dbUser.PasswordHash, "Password should have changed")
+	assert.Nil(t, dbUser.ResetPwHash, "Reset hash should be cleared")
+	assert.Nil(t, dbUser.ResetPwHashExpires, "Reset expiry should be cleared")
+
+	// Verify new password hash
+	expectedHash := md5.Sum([]byte("new_secure_password123"))
+	expectedHashString := hex.EncodeToString(expectedHash[:])
+	assert.Equal(t, expectedHashString, dbUser.PasswordHash, "New password hash should match")
+}
+
+func TestResetPassword_InvalidToken(t *testing.T) {
+	database.SetupTestDB()
+	
+	gin.SetMode(gin.TestMode)
+	router := gin.New()
+	router.POST("/password-reset/reset", ResetPassword)
+
+	requestData := map[string]interface{}{
+		"token":        "invalid_token",
+		"new_password": "new_secure_password123",
+	}
+	jsonData, _ := json.Marshal(requestData)
+
+	req, _ := http.NewRequest("POST", "/password-reset/reset", bytes.NewBuffer(jsonData))
+	req.Header.Set("Content-Type", "application/json")
+	
+	w := httptest.NewRecorder()
+	router.ServeHTTP(w, req)
+
+	assert.Equal(t, http.StatusBadRequest, w.Code)
+}
+
+func TestResetPassword_ShortPassword(t *testing.T) {
+	user := setupTestUser(t)
+	
+	resetHash := "test_reset_hash_short_password"
+	err := user.SetPasswordResetHash(resetHash)
+	require.NoError(t, err)
+
+	gin.SetMode(gin.TestMode)
+	router := gin.New()
+	router.POST("/password-reset/reset", ResetPassword)
+
+	requestData := map[string]interface{}{
+		"token":        resetHash,
+		"new_password": "123", // Too short
+	}
+	jsonData, _ := json.Marshal(requestData)
+
+	req, _ := http.NewRequest("POST", "/password-reset/reset", bytes.NewBuffer(jsonData))
+	req.Header.Set("Content-Type", "application/json")
+	
+	w := httptest.NewRecorder()
+	router.ServeHTTP(w, req)
+
+	assert.Equal(t, http.StatusBadRequest, w.Code)
+}
+
+func TestResetPassword_ExpiredToken(t *testing.T) {
+	user := setupTestUser(t)
+	
+	// Set expired reset hash
+	resetHash := "expired_reset_hash_for_reset"
+	expiredTime := time.Now().Add(-1 * time.Hour) // 1 hour ago
+	user.ResetPwHash = &resetHash
+	user.ResetPwHashExpires = &expiredTime
+	err := user.Save()
+	require.NoError(t, err)
+
+	gin.SetMode(gin.TestMode)
+	router := gin.New()
+	router.POST("/password-reset/reset", ResetPassword)
+
+	requestData := map[string]interface{}{
+		"token":        resetHash,
+		"new_password": "new_secure_password123",
+	}
+	jsonData, _ := json.Marshal(requestData)
+
+	req, _ := http.NewRequest("POST", "/password-reset/reset", bytes.NewBuffer(jsonData))
+	req.Header.Set("Content-Type", "application/json")
+	
+	w := httptest.NewRecorder()
+	router.ServeHTTP(w, req)
+
+	assert.Equal(t, http.StatusBadRequest, w.Code)
+}
+
+// Test User model methods
+func TestUser_SetPasswordResetHash(t *testing.T) {
+	user := setupTestUser(t)
+	
+	resetHash := "test_hash_123456789"
+	err := user.SetPasswordResetHash(resetHash)
+	
+	assert.NoError(t, err)
+	assert.NotNil(t, user.ResetPwHash)
+	assert.Equal(t, resetHash, *user.ResetPwHash)
+	assert.NotNil(t, user.ResetPwHashExpires)
+	assert.True(t, user.ResetPwHashExpires.After(time.Now()))
+	assert.True(t, user.ResetPwHashExpires.Before(time.Now().Add(15*24*time.Hour))) // Should be ~14 days
+}
+
+func TestUser_ClearPasswordResetHash(t *testing.T) {
+	user := setupTestUser(t)
+	
+	// First set a reset hash
+	resetHash := "test_hash_to_clear"
+	err := user.SetPasswordResetHash(resetHash)
+	require.NoError(t, err)
+	require.NotNil(t, user.ResetPwHash)
+	
+	// Then clear it
+	err = user.ClearPasswordResetHash()
+	
+	assert.NoError(t, err)
+	assert.Nil(t, user.ResetPwHash)
+	assert.Nil(t, user.ResetPwHashExpires)
+}
+
+func TestUser_IsResetHashValid(t *testing.T) {
+	user := setupTestUser(t)
+	
+	resetHash := "valid_test_hash_123"
+	err := user.SetPasswordResetHash(resetHash)
+	require.NoError(t, err)
+	
+	// Test valid hash
+	assert.True(t, user.IsResetHashValid(resetHash))
+	
+	// Test invalid hash
+	assert.False(t, user.IsResetHashValid("wrong_hash"))
+	
+	// Test expired hash
+	expiredTime := time.Now().Add(-1 * time.Hour)
+	user.ResetPwHashExpires = &expiredTime
+	assert.False(t, user.IsResetHashValid(resetHash))
+	
+	// Test nil hash
+	user.ResetPwHash = nil
+	user.ResetPwHashExpires = nil
+	assert.False(t, user.IsResetHashValid(resetHash))
+}
+
+func TestUser_FindByResetHash(t *testing.T) {
+	user := setupTestUser(t)
+	
+	resetHash := "find_by_hash_test_123"
+	err := user.SetPasswordResetHash(resetHash)
+	require.NoError(t, err)
+	
+	// Test finding valid hash
+	var foundUser User
+	err = foundUser.FindByResetHash(resetHash)
+	assert.NoError(t, err)
+	assert.Equal(t, user.UserID, foundUser.UserID)
+	assert.Equal(t, user.Email, foundUser.Email)
+	
+	// Test finding invalid hash
+	var notFoundUser User
+	err = notFoundUser.FindByResetHash("invalid_hash")
+	assert.Error(t, err)
+	
+	// Test finding expired hash
+	expiredTime := time.Now().Add(-1 * time.Hour)
+	user.ResetPwHashExpires = &expiredTime
+	err = user.Save()
+	require.NoError(t, err)
+	
+	var expiredUser User
+	err = expiredUser.FindByResetHash(resetHash)
+	assert.Error(t, err) // Should not find expired token
+}
+
+func TestUser_FindByEmail(t *testing.T) {
+	user := setupTestUser(t)
+	
+	// Test finding existing email
+	var foundUser User
+	err := foundUser.FindByEmail(user.Email)
+	assert.NoError(t, err)
+	assert.Equal(t, user.UserID, foundUser.UserID)
+	assert.Equal(t, user.Username, foundUser.Username)
+	
+	// Test finding non-existent email
+	var notFoundUser User
+	err = notFoundUser.FindByEmail("nonexistent@example.com")
+	assert.Error(t, err)
+}