Extract game state persistence

RpgRoller.Tests/Services/ServiceStateInfrastructureTests.cs

@@ -0,0 +1,62 @@
+namespace RpgRoller.Tests;
+
+public sealed class ServiceStateInfrastructureTests
+{
+    [Fact]
+    public void GameStateStore_StartsWithEmptyMutableCollections()
+    {
+        var store = new GameStateStore();
+
+        Assert.NotNull(store.Gate);
+        Assert.Empty(store.UsersById);
+        Assert.Empty(store.UserIdsByUsername);
+        Assert.Empty(store.SessionsByToken);
+        Assert.Empty(store.CampaignsById);
+        Assert.Empty(store.CampaignStateById);
+        Assert.Empty(store.CharactersById);
+        Assert.Empty(store.SkillGroupsById);
+        Assert.Empty(store.SkillsById);
+        Assert.Empty(store.RollLog);
+    }
+
+    [Fact]
+    public void GameStateCloneFactory_ProducesDetachedCopies()
+    {
+        var user = new UserAccount
+        {
+            Id = Guid.NewGuid(),
+            Username = "user",
+            UsernameNormalized = "USER",
+            PasswordHash = "hash",
+            DisplayName = "User",
+            Roles = "admin",
+            ActiveCharacterId = Guid.NewGuid()
+        };
+        var session = new UserSession { Token = "token", UserId = user.Id, CreatedAtUtc = DateTimeOffset.UtcNow };
+        var campaign = new Campaign { Id = Guid.NewGuid(), GmUserId = user.Id, Name = "Main", Ruleset = RulesetKind.D6, Version = 3 };
+        var character = new Character { Id = Guid.NewGuid(), OwnerUserId = user.Id, CampaignId = campaign.Id, Name = "Hero" };
+        var skillGroup = new SkillGroup { Id = Guid.NewGuid(), CharacterId = character.Id, Name = "Group", DiceRollDefinition = "2D+1", WildDice = 1, AllowFumble = true, FumbleRange = null };
+        var skill = new Skill { Id = Guid.NewGuid(), CharacterId = character.Id, SkillGroupId = skillGroup.Id, Name = "Skill", DiceRollDefinition = "2D+2", WildDice = 1, AllowFumble = true, FumbleRange = null };
+        var logEntry = new RollLogEntry
+        {
+            Id = Guid.NewGuid(),
+            CampaignId = campaign.Id,
+            CharacterId = character.Id,
+            SkillId = skill.Id,
+            RollerUserId = user.Id,
+            Visibility = RollVisibility.Public,
+            Result = 12,
+            Breakdown = "6 + 6 = 12",
+            Dice = "[]",
+            TimestampUtc = DateTimeOffset.UtcNow
+        };
+
+        Assert.NotSame(user, GameStateCloneFactory.CloneUser(user));
+        Assert.NotSame(session, GameStateCloneFactory.CloneSession(session));
+        Assert.NotSame(campaign, GameStateCloneFactory.CloneCampaign(campaign));
+        Assert.NotSame(character, GameStateCloneFactory.CloneCharacter(character));
+        Assert.NotSame(skillGroup, GameStateCloneFactory.CloneSkillGroup(skillGroup));
+        Assert.NotSame(skill, GameStateCloneFactory.CloneSkill(skill));
+        Assert.NotSame(logEntry, GameStateCloneFactory.CloneRollLogEntry(logEntry));
+    }
+}