add tests for basic postgres operation

Tests/DbLocalizationProvider.Storage.PostgreSql.Tests/ResourceRepositoryTests.cs

@@ -0,0 +1,46 @@
+using System;
+using System.Threading.Tasks;
+using DbLocalizationProvider.Abstractions;
+using Microsoft.Extensions.Options;
+using Testcontainers.PostgreSql;
+using Xunit;
+
+namespace DbLocalizationProvider.Storage.PostgreSql.Tests;
+
+public class ResourceRepositoryTests : IAsyncLifetime
+{
+    private readonly PostgreSqlContainer _postgreSqlContainer = new PostgreSqlBuilder().Build();
+
+    public async Task InitializeAsync()
+    {
+        await _postgreSqlContainer.StartAsync();
+        Settings.DbContextConnectionString = _postgreSqlContainer.GetConnectionString();
+        new SchemaUpdater().Execute(null);
+    }
+
+    public Task DisposeAsync()
+    {
+        return _postgreSqlContainer.DisposeAsync().AsTask();
+    }
+
+    [Fact]
+    public void CanSaveNewResource()
+    {
+        var ctx = new ConfigurationContext();
+        var wrapper = new OptionsWrapper<ConfigurationContext>(ctx);
+        var repo = new ResourceRepository(wrapper);
+        var original = new LocalizationResource("testKey", false){
+            IsHidden = false,
+            FromCode = false,
+            IsModified = true,
+            Notes = "a test describtion",
+            Author = "test",
+            ModificationDate = DateTime.Now
+        };
+        repo.InsertResource(original);
+        var fromDB = repo.GetByKey(original.ResourceKey);
+        Assert.Equal(original.Notes, fromDB.Notes);
+    }
+
+
+}