refactor(bp): flatten BattlePassLevelEntry — drop misnamed RewardData jsonb

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

SVSim.UnitTests/Importers/BattlePassImporterTests.cs

@@ -0,0 +1,83 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.DependencyInjection;
+using SVSim.Bootstrap.Importers;
+using SVSim.Database;
+using SVSim.UnitTests.Infrastructure;
+
+namespace SVSim.UnitTests.Importers;
+
+public class BattlePassImporterTests
+{
+    private static string SeedDir => Path.Combine(AppContext.BaseDirectory, "Data", "seeds");
+
+    [Test]
+    public async Task Imports_level_curve_from_seed_file()
+    {
+        using var factory = new SVSimTestFactory();
+        using var scope = factory.Services.CreateScope();
+        var db = scope.ServiceProvider.GetRequiredService<SVSimDbContext>();
+
+        await new BattlePassImporter().ImportAsync(db, SeedDir);
+
+        var levels = await db.BattlePassLevels.OrderBy(e => e.Level).ToListAsync();
+        Assert.That(levels.Count, Is.EqualTo(100), "seed must contain 100 levels");
+        Assert.That(levels[0].Level, Is.EqualTo(1));
+        Assert.That(levels[0].RequiredPoint, Is.EqualTo(0));
+        Assert.That(levels[1].Level, Is.EqualTo(2));
+        Assert.That(levels[1].RequiredPoint, Is.EqualTo(500));
+    }
+
+    [Test]
+    public async Task Is_idempotent_on_rerun()
+    {
+        using var factory = new SVSimTestFactory();
+        using var scope = factory.Services.CreateScope();
+        var db = scope.ServiceProvider.GetRequiredService<SVSimDbContext>();
+
+        await new BattlePassImporter().ImportAsync(db, SeedDir);
+        int before = await db.BattlePassLevels.CountAsync();
+        await new BattlePassImporter().ImportAsync(db, SeedDir);
+        int after = await db.BattlePassLevels.CountAsync();
+
+        Assert.That(after, Is.EqualTo(before));
+    }
+
+    [Test]
+    public async Task Leaves_existing_rows_untouched_when_missing_from_seed()
+    {
+        using var factory = new SVSimTestFactory();
+        using var scope = factory.Services.CreateScope();
+        var db = scope.ServiceProvider.GetRequiredService<SVSimDbContext>();
+
+        db.BattlePassLevels.Add(new SVSim.Database.Models.BattlePassLevelEntry
+        {
+            Level = 999, RequiredPoint = 12345,
+        });
+        await db.SaveChangesAsync();
+
+        await new BattlePassImporter().ImportAsync(db, SeedDir);
+
+        var legacy = await db.BattlePassLevels.FindAsync(999);
+        Assert.That(legacy, Is.Not.Null, "seed-missing row must be left intact");
+        Assert.That(legacy!.RequiredPoint, Is.EqualTo(12345));
+    }
+
+    [Test]
+    public async Task Empty_seed_file_is_no_op()
+    {
+        using var factory = new SVSimTestFactory();
+        using var scope = factory.Services.CreateScope();
+        var db = scope.ServiceProvider.GetRequiredService<SVSimDbContext>();
+
+        string tmp = Path.Combine(Path.GetTempPath(), $"seed-{Guid.NewGuid()}");
+        Directory.CreateDirectory(tmp);
+        try
+        {
+            File.WriteAllText(Path.Combine(tmp, "battle-pass-levels.json"), "[]");
+            await new BattlePassImporter().ImportAsync(db, tmp);
+            int count = await db.BattlePassLevels.CountAsync();
+            Assert.That(count, Is.EqualTo(0));
+        }
+        finally { Directory.Delete(tmp, true); }
+    }
+}