feat: split client tooling and add OAuth server login

go/internal/server/player/preset_runtime_test.go

@@ -0,0 +1,60 @@
+package player
+
+import (
+	"errors"
+	"path/filepath"
+	"testing"
+	"time"
+)
+
+func TestValidatePresetEquipmentDoesNotHoldEquipmentLockDuringCharacterStats(t *testing.T) {
+	dir := t.TempDir()
+	inventory, err := OpenInventory(testStore(filepath.Join(dir, "items.json")), &Starter{Version: "2.35.10"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	characters, err := OpenCharacterStore(testStore(filepath.Join(dir, "characters.json")), []Character{{InvenIndex: 100, ID: 350, Level: 1}}, inventory, "", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+	equipment, err := OpenEquipmentInventory(testStore(filepath.Join(dir, "equipment.json")))
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := equipment.AttachSlots(map[uint64]uint64{10: 0}); err != nil {
+		t.Fatal(err)
+	}
+	if err := equipment.AttachCharacters(characters); err != nil {
+		t.Fatal(err)
+	}
+	owned, err := equipment.GrantOnce("preset-deadlock", 10)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := characters.AttachMaxHealth(func(Character) (uint64, error) {
+		// This mirrors the production stat calculator's dependency on the
+		// equipment inventory. Validation must not hold equipment.mu here.
+		if len(equipment.All()) == 0 {
+			return 0, errors.New("missing equipment")
+		}
+		return 100, nil
+	}); err != nil {
+		t.Fatal(err)
+	}
+
+	done := make(chan error, 1)
+	go func() {
+		done <- equipment.ValidatePresetEquipment([]PresetEquipmentBinding{{
+			CharacterIndex: 100,
+			Equipment:      []uint64{owned.InvenIndex, 0, 0, 0, 0},
+		}})
+	}()
+	select {
+	case err := <-done:
+		if err != nil {
+			t.Fatal(err)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("preset equipment validation deadlocked through character stat calculation")
+	}
+}