NpgsqlCodec

pgLabII.PgUtils.Tests/ConnectionStrings/NpgsqlCodecTests.cs

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+using System.Collections.Generic;
+using Npgsql;
+using pgLabII.PgUtils.ConnectionStrings;
+
+namespace pgLabII.PgUtils.Tests.ConnectionStrings;
+
+public class NpgsqlCodecTests
+{
+    [Fact]
+    public void Parse_Basic()
+    {
+        var codec = new NpgsqlCodec();
+        var res = codec.TryParse("Host=localhost;Port=5434;Database=testdb;Username=alice;Password=secret;SSL Mode=Require;Application Name=pgLab;Timeout=10");
+        Assert.True(res.IsSuccess);
+        var d = res.Value;
+        Assert.Single(d.Hosts);
+        Assert.Equal("localhost", d.Hosts[0].Host);
+        Assert.Equal((ushort)5434, 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(10, d.TimeoutSeconds);
+    }
+
+    [Fact]
+    public void Parse_MultiHost_WithSinglePort()
+    {
+        var codec = new NpgsqlCodec();
+        var res = codec.TryParse("Host=host1,host2;Port=5433;Database=db;Username=u");
+        Assert.True(res.IsSuccess);
+        var d = res.Value;
+        Assert.Equal(2, d.Hosts.Count);
+        Assert.Equal("host1", d.Hosts[0].Host);
+        Assert.Equal((ushort)5433, d.Hosts[0].Port);
+        Assert.Equal("host2", d.Hosts[1].Host);
+        Assert.Equal((ushort)5433, d.Hosts[1].Port);
+    }
+
+    [Fact]
+    public void Format_Basic_WithQuoting()
+    {
+        var codec = new NpgsqlCodec();
+        var d = new ConnectionDescriptor
+        {
+            Hosts = new [] { new HostEndpoint{ Host = "db.example.com", Port = 5432 } },
+            Database = "prod db",
+            Username = "bob",
+            Password = "p;ss\"word",
+            SslMode = SslMode.VerifyFull,
+            ApplicationName = "cli app",
+            TimeoutSeconds = 9,
+            Properties = new Dictionary<string,string>{{"Search Path","public"}}
+        };
+        var res = codec.TryFormat(d);
+        Assert.True(res.IsSuccess);
+        var s = res.Value;
+        Assert.Contains("Host=db.example.com", s);
+        Assert.Contains("Port=5432", s);
+        Assert.Contains("Database=\"prod db\"", s);
+        Assert.Contains("Username=bob", s);
+        Assert.Contains("Password=\"p;ss\"\"word\"", s);
+        Assert.Contains("SSL Mode=VerifyFull", s);
+        Assert.Contains("Application Name=\"cli app\"", s);
+        Assert.Contains("Timeout=9", s);
+        Assert.Contains("Search Path=public", s);
+    }
+
+    [Fact]
+    public void Roundtrip_ParseThenFormat()
+    {
+        var codec = new NpgsqlCodec();
+        var input = "Host=\"my host\";Database=postgres;Username=me;Password=\"with;quote\"\"\";Application Name=\"my app\";SSL Mode=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.Contains("Host=\"my host\"", s);
+        Assert.Contains("Database=postgres", s);
+        Assert.Contains("Username=me", s);
+        Assert.Contains("Password=\"with;quote\"\"\"", s);
+        Assert.Contains("Application Name=\"my app\"", s);
+        Assert.Contains("SSL Mode=Prefer", s);
+    }
+}