Added unit tests and fixed some bugs.

1 files changed, 51 insertions, 0 deletions

diff --git a/PollutometerWebApi.Tests/AqiCalculatorTests.cs b/PollutometerWebApi.Tests/AqiCalculatorTests.cs
new file mode 100644
index 0000000..e84b687
--- /dev/null
+++ b/PollutometerWebApi.Tests/AqiCalculatorTests.cs
@@ -0,0 +1,51 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using PollutometerWebApi.Models;
+
+namespace PollutometerWebApi.Tests
+{
+    [TestClass()]
+    public class AqiCalculatorTests
+    {
+        [TestMethod()]
+        public void CalculateAqiPerfectTest()
+        {
+            var reading = new Reading
+            {
+                Co = 2.2,
+                No = 0.1,
+                So = 0.8
+            };
+
+            var result = AqiCalculator.CalculateAqi(reading);
+            Assert.AreEqual(398.0100502512563, result.Value);
+        }
+
+        [TestMethod()]
+        public void CalculateAqiBigNumbersTest()
+        {
+            var reading = new Reading
+            {
+                Co = 100.2,
+                No = 100.1,
+                So = 100.8
+            };
+
+            var result = AqiCalculator.CalculateAqi(reading);
+            Assert.AreEqual(0, result.Value);
+        }
+
+        [TestMethod()]
+        public void CalculateAqiZerosTest()
+        {
+            var reading = new Reading
+            {
+                Co = 0,
+                No = 0,
+                So = 0
+            };
+
+            var result = AqiCalculator.CalculateAqi(reading);
+            Assert.AreEqual(0, result.Value);
+        }
+    }
+}
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