--- a/CellTest.m	Wed Aug 02 09:34:45 2017 +0200
+++ b/CellTest.m	Wed Aug 02 09:38:12 2017 +0200
@@ -11,5 +11,42 @@
 end
 
 function testConcat(testCase)
-    testCase.verifyFail();
+    cases = {
+        {{},{}},
+        {{1},{}},
+        {{},{1}},
+        {{1},{2}},
+        {{1, 2},{3, 4}},
+        {{1; 2},{3; 4}},
+    };
+
+    horzCat = {
+        {},
+        {1},
+        {1},
+        {1,2},
+        {1, 2, 3, 4},
+        {1, 3; 2, 4},
+    };
+
+    vertCat = {
+        {},
+        {1},
+        {1},
+        {1; 2},
+        {1, 2; 3, 4},
+        {1; 2; 3; 4},
+    };
+
+    for i = 1:length(cases)
+        A = Cell(cases{i}{1});
+        B = Cell(cases{i}{2});
+
+        C_horz = [A, B];
+        C_vert = [A; B];
+
+        testCase.verifyEqual(C_horz.data, horzCat{i});
+        testCase.verifyEqual(C_vert.data, vertCat{i});
+
+    end
 end