IExpressionNode basic implementations.

2019-12-01 02:03:47 +01:00
parent dc18d28b54
commit 3467697552
9 changed files with 198 additions and 0 deletions
--- a/VAR.ExpressionEvaluator.Tests/ExpressionBinaryNodeTests.cs
+++ b/VAR.ExpressionEvaluator.Tests/ExpressionBinaryNodeTests.cs
@@ -0,0 +1,64 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace VAR.ExpressionEvaluator.Tests
+{
+    [TestClass()]
+    public class ExpressionBinaryNodeTests
+    {
+        [TestMethod()]
+        public void ExpressionBinaryNode__Plus()
+        {
+            var expr = new ExpressionBinaryNode(
+                leftNode: new ExpressionNumberNode(10),
+                rightNode: new ExpressionNumberNode(20),
+                operation: (a, b) => (decimal)a + (decimal)b
+            );
+
+            var result = expr.Eval();
+
+            Assert.AreEqual(30m, result);
+        }
+
+        [TestMethod()]
+        public void ExpressionBinaryNode__Minus()
+        {
+            var expr = new ExpressionBinaryNode(
+                leftNode: new ExpressionNumberNode(10),
+                rightNode: new ExpressionNumberNode(20),
+                operation: (a, b) => (decimal)a - (decimal)b
+            );
+
+            var result = expr.Eval();
+
+            Assert.AreEqual(-10m, result);
+        }
+
+        [TestMethod()]
+        public void ExpressionBinaryNode__Multiply()
+        {
+            var expr = new ExpressionBinaryNode(
+                leftNode: new ExpressionNumberNode(10),
+                rightNode: new ExpressionNumberNode(20),
+                operation: (a, b) => (decimal)a * (decimal)b
+            );
+
+            var result = expr.Eval();
+
+            Assert.AreEqual(200m, result);
+        }
+
+        [TestMethod()]
+        public void ExpressionBinaryNode__Division()
+        {
+            var expr = new ExpressionBinaryNode(
+                leftNode: new ExpressionNumberNode(10),
+                rightNode: new ExpressionNumberNode(5),
+                operation: (a, b) => (decimal)a / (decimal)b
+            );
+
+            var result = expr.Eval();
+
+            Assert.AreEqual(2m, result);
+        }
+    }
+}