UrlCodec

pgLabII.PgUtils.Tests/ConnectionStrings/UrlCodecTests.cs

@@ -0,0 +1,85 @@
+using System.Collections.Generic;
+using Npgsql;
+using pgLabII.PgUtils.ConnectionStrings;
+
+namespace pgLabII.PgUtils.Tests.ConnectionStrings;
+
+public class UrlCodecTests
+{
+    [Fact]
+    public void Parse_Basic()
+    {
+        var codec = new UrlCodec();
+        var res = codec.TryParse("postgresql://alice:secret@localhost:5433/testdb?sslmode=require&application_name=pgLab&connect_timeout=12&search_path=public");
+        Assert.True(res.IsSuccess);
+        var d = res.Value;
+        Assert.Single(d.Hosts);
+        Assert.Equal("localhost", d.Hosts[0].Host);
+        Assert.Equal((ushort)5433, d.Hosts[0].Port);
+        Assert.Equal("testdb", d.Database);
+        Assert.Equal("alice", d.Username);
+        Assert.Equal("secret", d.Password);
+        Assert.Equal(SslMode.Require, d.SslMode);
+        Assert.Equal("pgLab", d.ApplicationName);
+        Assert.Equal(12, d.TimeoutSeconds);
+        Assert.True(d.Properties.ContainsKey("search_path"));
+        Assert.Equal("public", d.Properties["search_path"]);
+    }
+
+    [Fact]
+    public void Parse_MultiHost_WithIPv6()
+    {
+        var codec = new UrlCodec();
+        var res = codec.TryParse("postgresql://user@[::1]:5432,db.example.com:5433/db");
+        Assert.True(res.IsSuccess);
+        var d = res.Value;
+        Assert.Equal(2, d.Hosts.Count);
+        Assert.Equal("::1", d.Hosts[0].Host);
+        Assert.Equal((ushort)5432, d.Hosts[0].Port);
+        Assert.Equal("db.example.com", d.Hosts[1].Host);
+        Assert.Equal((ushort)5433, d.Hosts[1].Port);
+        Assert.Equal("db", d.Database);
+    }
+
+    [Fact]
+    public void Format_Basic_WithEncoding()
+    {
+        var codec = new UrlCodec();
+        var d = new ConnectionDescriptor
+        {
+            Hosts = new [] { new HostEndpoint{ Host = "db.example.com", Port = 5432 } },
+            Database = "prod db",
+            Username = "bob",
+            Password = "p@ss w?rd",
+            SslMode = SslMode.VerifyFull,
+            ApplicationName = "cli app",
+            TimeoutSeconds = 7,
+            Properties = new Dictionary<string,string>{{"search_path","public"}}
+        };
+        var res = codec.TryFormat(d);
+        Assert.True(res.IsSuccess);
+        var s = res.Value;
+        Assert.StartsWith("postgresql://", s);
+        Assert.Contains("bob:p%40ss%20w%3Frd@db.example.com:5432", s);
+        Assert.Contains("/prod%20db", s);
+        Assert.Contains("sslmode=verify-full", s);
+        Assert.Contains("application_name=cli%20app", s);
+        Assert.Contains("connect_timeout=7", s);
+        Assert.Contains("search_path=public", s);
+    }
+
+    [Fact]
+    public void Roundtrip_ParseThenFormat()
+    {
+        var codec = new UrlCodec();
+        var input = "postgresql://me:pa%3Ass@host1,host2:5433/postgres?application_name=my%20app&sslmode=prefer";
+        var parsed = codec.TryParse(input);
+        Assert.True(parsed.IsSuccess);
+        var formatted = codec.TryFormat(parsed.Value);
+        Assert.True(formatted.IsSuccess);
+        var s = formatted.Value;
+        Assert.StartsWith("postgresql://me:pa%3Ass@host1,host2:5433/postgres?", s);
+        Assert.Contains("application_name=my%20app", s);
+        Assert.Contains("sslmode=prefer", s);
+    }
+}