Part 1 & 2

Buckets.Test/OilBarrelTest.cs

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+using Buckets.Logic;
+
+namespace Buckets.Test
+{
+    [TestClass]
+    public class OilBarrelTest
+    {
+        [TestMethod]
+        public void OilBarrel_ValidParams_ShouldEqualDefault()
+        {
+            OilBarrel oilbarrel = new(10);
+            Assert.AreEqual(OilBarrel.CAPACITY, oilbarrel.Capacity);
+        }
+    }
+}