Tests

backend/handlers/auth/auth_test.go

@@ -26,6 +26,7 @@ import (
 	"fmt"
 	"net/http"
 	"net/http/httptest"
+	"strings"
 	"testing"
 	"time"
 
@@ -910,5 +911,103 @@ func TestVerifyCheck_RoleChangeToVerified(t *testing.T) {
 	}
 }
 
+// =============================================================================
+// Password Length Tests (Registration)
+// =============================================================================
+
+// TestRegister_PasswordLength_NoMinimum verifies that registration accepts passwords
+// of any length (no minimum). The business decision is to not enforce a minimum.
+// bcrypt handles passwords up to 72 chars internally (truncates longer ones).
+func TestRegister_PasswordLength_NoMinimum(t *testing.T) {
+	cleanup := setupTestDB(t)
+	defer cleanup()
+
+	handler := http.HandlerFunc(RegisterHandler)
+
+	tests := []struct {
+		name        string
+		password    string
+		expectError bool
+	}{
+		{
+			name:        "1_char_password",
+			password:    "x",
+			expectError: false, // No minimum enforced
+		},
+		{
+			name:        "5_char_password",
+			password:    "short",
+			expectError: false, // No minimum enforced
+		},
+		{
+			name:        "72_char_password_exact_bcrypt_limit",
+			password:    strings.Repeat("a", 72),
+			expectError: false,
+		},
+		{
+			name:        "73_char_password_exceeds_limit",
+			password:    strings.Repeat("a", 73),
+			expectError: true, // Exceeds bcrypt limit
+		},
+		{
+			name:        "100_char_password_exceeds_limit",
+			password:    strings.Repeat("a", 100),
+			expectError: true, // Exceeds bcrypt limit
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			body := RegisterRequest{
+				FirstName:      "Test",
+				LastName:       "User",
+				Email:          fmt.Sprintf("test-%s@test.com", tt.name),
+				Password:       tt.password,
+				Phone:          "07123456789",
+				DateOfBirth:    "1990-01-15",
+				AgreedToPolicy: true,
+			}
+
+			w := makeRequest(handler, "POST", "/api/register", body)
+
+			if tt.expectError {
+				if w.Code == http.StatusCreated {
+					t.Errorf("expected non-201 status for password '%s', got 201", tt.password)
+				}
+			} else {
+				if w.Code != http.StatusCreated {
+					t.Errorf("expected status 201 for password len=%d, got %d. body: %s", len(tt.password), w.Code, w.Body.String())
+				}
+			}
+		})
+	}
+}
+
+// TestRegister_EmptyPassword verifies that an empty password is rejected
+// because it's a required field (not because of minimum length).
+func TestRegister_EmptyPassword(t *testing.T) {
+	cleanup := setupTestDB(t)
+	defer cleanup()
+
+	handler := http.HandlerFunc(RegisterHandler)
+
+	body := RegisterRequest{
+		FirstName:      "Test",
+		LastName:       "User",
+		Email:          "empty@test.com",
+		Password:       "", // Empty - should fail as required field
+		Phone:          "07123456789",
+		DateOfBirth:    "1990-01-15",
+		AgreedToPolicy: true,
+	}
+
+	w := makeRequest(handler, "POST", "/api/register", body)
+
+	// Empty password fails because it's a required field
+	if w.Code != http.StatusBadRequest {
+		t.Errorf("expected status 400 for empty password, got %d", w.Code)
+	}
+}
+
 // Ensure test compilation - import pgxpool to avoid unused import
 var _ = func() *pgxpool.Pool { return nil }