pq connection string parsing from other project

pgLabII.PgUtils.Tests/ConnectionStrings/PqConnectionStringParserTests.cs

@@ -0,0 +1,41 @@
+using pgLabII.PgUtils.ConnectionStrings;
+
+namespace pgLabII.PgUtils.Tests.ConnectionStrings;
+
+public class PqConnectionStringParserTests
+{
+    private readonly UnitTestTokenizer tokenizer = new();
+
+    private const string kw = "ab";
+    private const string val = "cd";
+
+    public PqConnectionStringParserTests()
+    {
+        tokenizer
+            .AddString(kw)
+            .AddEquals()
+            .AddString(val);
+    }
+
+    [Fact]
+    public void Success()
+    {
+        var parser = new PqConnectionStringParser(tokenizer);
+        IDictionary<string, string> output = parser.Parse();
+
+        Assert.Single(output);
+        Assert.True(output.TryGetValue(kw, out string? result));
+        Assert.Equal(val, result);
+    }
+
+    [Fact]
+    public void StaticParse()
+    {
+        var output = PqConnectionStringParser.Parse("foo=bar");
+        Assert.Single(output);
+        Assert.True(output.TryGetValue("foo", out string? result));
+        Assert.Equal("bar", result);
+    }
+    // There are few tests here as this is a predictive parser and all error handling is done
+    // in the tokenizer
+}