JDBC string support

pgLabII.PgUtils.Tests/ConnectionStrings/JdbcCodecTests.cs

@@ -0,0 +1,55 @@
+using pgLabII.PgUtils.ConnectionStrings;
+
+namespace pgLabII.PgUtils.Tests.ConnectionStrings;
+
+public class JdbcCodecTests
+{
+    [Fact]
+    public void Parse_Basic()
+    {
+        var codec = new JdbcCodec();
+        var r = codec.TryParse("jdbc:postgresql://localhost:5433/mydb?sslmode=require&applicationName=app&connectTimeout=12");
+        Assert.True(r.IsSuccess);
+        var d = r.Value;
+        Assert.Single(d.Hosts);
+        Assert.Equal("localhost", d.Hosts[0].Host);
+        Assert.Equal((ushort)5433, d.Hosts[0].Port);
+        Assert.Equal("mydb", d.Database);
+        Assert.Equal(Npgsql.SslMode.Require, d.SslMode);
+        Assert.Equal("app", d.ApplicationName);
+        Assert.Equal(12, d.TimeoutSeconds);
+    }
+
+    [Fact]
+    public void Parse_MultiHost_MixedPorts()
+    {
+        var codec = new JdbcCodec();
+        var r = codec.TryParse("jdbc:postgresql://host1:5432,[::1]:5544,host3/db");
+        Assert.True(r.IsSuccess);
+        var d = r.Value;
+        Assert.Equal(3, d.Hosts.Count);
+        Assert.Equal("host1", d.Hosts[0].Host);
+        Assert.Equal((ushort)5432, d.Hosts[0].Port);
+        Assert.Equal("::1", d.Hosts[1].Host);
+        Assert.Equal((ushort)5544, d.Hosts[1].Port);
+        Assert.Equal("host3", d.Hosts[2].Host);
+        Assert.Null(d.Hosts[2].Port);
+        Assert.Equal("db", d.Database);
+    }
+
+    [Fact]
+    public void Format_RoundTrip()
+    {
+        var codec = new JdbcCodec();
+        var parsed = codec.TryParse("jdbc:postgresql://hostA,hostB:5555/test_db?applicationName=cli&param=x%20y");
+        Assert.True(parsed.IsSuccess);
+        var formatted = codec.TryFormat(parsed.Value);
+        Assert.True(formatted.IsSuccess);
+        var parsed2 = codec.TryParse(formatted.Value);
+        Assert.True(parsed2.IsSuccess);
+        Assert.Equal(parsed.Value.Hosts.Count, parsed2.Value.Hosts.Count);
+        Assert.Equal(parsed.Value.Database, parsed2.Value.Database);
+        Assert.Equal("cli", parsed2.Value.ApplicationName);
+        Assert.Equal("x y", parsed2.Value.Properties["param"]);
+    }
+}