diff --git a/subfolder/SolverTest.m b/subfolder/SolverTest.m
new file mode 100644
index 0000000..c670e11
--- /dev/null
+++ b/subfolder/SolverTest.m
@@ -0,0 +1,18 @@
+classdef SolverTest < matlab.unittest.TestCase
+    methods(Test)
+        function realSolution(testCase)
+            actSolution = quadraticSolver(1,-3,2);
+            expSolution = [2 1];
+            testCase.verifyEqual(actSolution,expSolution)
+        end
+        function imaginarySolution(testCase)
+            actSolution = quadraticSolver(1,2,10);
+            expSolution = [-1+3i -1-3i];
+            testCase.verifyEqual(actSolution,expSolution)
+        end
+        function nonnumericInput(testCase)
+            testCase.verifyError(@()quadraticSolver(1,'-3',2), ...
+                'quadraticSolver:InputMustBeNumeric')
+        end
+    end
+end