unit tests

SharpCalculator.Tests/ComplicatedExpressionTests.cs

@@ -0,0 +1,29 @@
+namespace SharpCalculator.Tests;
+
+public class ComplicatedExpressionTests
+{
+    public ComplicatedExpressionTests()
+    {
+        CultureInfo.DefaultThreadCurrentCulture = CultureInfo.InvariantCulture;
+    }
+
+    [Theory]
+    [InlineData(0.9,2,3)]
+    public void Expression1(double a, double b, double c) => 
+        Assert.Equal( a/(b+c), Calculator.Calculate($"({a})/(({b})+({c}))"));
+
+    [Theory]
+    [InlineData(0.9,2,3)]
+    public void Expression2(double a, double b, double c) => 
+        Assert.Equal( Math.Sin(a)-b*Math.Cos(c), Calculator.Calculate($"sin(({a}))-(({b})*cos(({c})))"));
+
+    [Theory]
+    [InlineData(0.9,2,3)]
+    public void Expression3(double a, double b, double c) => 
+        Assert.Equal( a*Math.Pow(b,c)+a*Math.Pow(b,c+1)+a*Math.Pow(b,c+2), Calculator.Calculate($"({a})*({b})^({c}) + ({a})*({b})^({c+1}) + ({a})*({b})^({c+2})"));
+
+    [Theory]
+    [InlineData(0.9,2,3)]
+    public void Expression4(double a, double b, double c) => 
+        Assert.Equal(a/(b+Math.Tan(c)), Calculator.Calculate($"({a})/(({b})+tan(({c})))"));
+}