feat: AddValidatedOptions bind+validate+ValidateOnStart

2026-06-01 09:31:14 -04:00
parent 563cf44c60
commit e191893738
2 changed files with 83 additions and 0 deletions
@@ -0,0 +1,47 @@
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Options;
+using ZB.MOM.WW.Configuration;
+
+namespace ZB.MOM.WW.Configuration.Tests;
+
+public sealed class AddValidatedOptionsTests
+{
+    private sealed class NodeOptions { public int Port { get; set; } public string? Name { get; set; } }
+
+    private sealed class NodeValidator : OptionsValidatorBase<NodeOptions>
+    {
+        protected override void Validate(ValidationBuilder v, NodeOptions o)
+        {
+            v.Port(o.Port, "Node:Port");
+            v.Required(o.Name, "Node:Name");
+        }
+    }
+
+    private static IHost BuildHost(Dictionary<string, string?> config)
+    {
+        var builder = Host.CreateApplicationBuilder();
+        builder.Configuration.AddInMemoryCollection(config);
+        builder.Services.AddValidatedOptions<NodeOptions, NodeValidator>(builder.Configuration, "Node");
+        return builder.Build();
+    }
+
+    [Fact]
+    public async Task Bad_config_throws_at_startup()
+    {
+        using var host = BuildHost(new() { ["Node:Port"] = "0", ["Node:Name"] = "" });
+        await Assert.ThrowsAsync<OptionsValidationException>(() => host.StartAsync());
+    }
+
+    [Fact]
+    public async Task Good_config_starts_and_binds()
+    {
+        using var host = BuildHost(new() { ["Node:Port"] = "8080", ["Node:Name"] = "central" });
+        await host.StartAsync();
+        var opts = host.Services.GetRequiredService<IOptions<NodeOptions>>().Value;
+        Assert.Equal(8080, opts.Port);
+        Assert.Equal("central", opts.Name);
+        await host.StopAsync();
+    }
+}