added polyline encoding oprions test

Author: petesramek

tests/PolylineAlgorithm.Abstraction.Tests/PolylineEncodingOptionsTest.cs

@@ -0,0 +1,50 @@
+namespace PolylineAlgorithm.Abstraction.Tests;
+
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Logging.Abstractions;
+using Microsoft.Extensions.Logging.Testing;
+using static PolylineAlgorithm.Abstraction.Tests.PolylineEncoderTest;
+
+[TestClass]
+public class PolylineEncodingOptionsTest {
+    [TestMethod]
+    public void Constructor_Parameterless_Ok() {
+        // Arrange && Act
+        var options = new PolylineEncodingOptions();
+
+        // Assert
+        Assert.AreEqual(64_000, options.BufferSize);
+        Assert.AreEqual(64_000 / sizeof(char), options.MaxLength);
+        Assert.IsInstanceOfType<NullLoggerFactory>(options.LoggerFactory);
+    }
+
+    [TestMethod]
+    public void Constructor_ValidOptions_Ok() {
+        // Arrange
+        var bufferSize = 32_000;
+        var loggerFactory = new FakeLoggerFactory(new FakeLoggerProvider());
+
+        // Act
+        var options = new PolylineEncodingOptions() {
+             BufferSize = bufferSize,
+             LoggerFactory = loggerFactory
+        };
+
+        // Assert
+        Assert.AreEqual(bufferSize, options.BufferSize);
+        Assert.AreEqual(bufferSize / sizeof(char), options.MaxLength);
+        Assert.IsInstanceOfType<FakeLoggerFactory>(options.LoggerFactory);
+    }
+
+    [TestMethod]
+    public void UseLogger_Returns_Instance() {
+        // Arrange
+        var options = new PolylineEncodingOptions();
+
+        // Act
+        var logger = options.UseLoggerFor<PolylineEncodingOptionsTest>();
+
+        // Assert
+        Assert.IsInstanceOfType<ILogger>(logger);
+    }
+}