typescript, es6, jest working

package.json

@@ -4,11 +4,25 @@
   "description": "",
   "main": "index.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "jest --watch"
   },
   "author": "",
   "license": "ISC",
   "devDependencies": {
+    "@babel/core": "^7.6.4",
+    "@babel/preset-env": "^7.6.3",
+    "@babel/preset-typescript": "^7.6.0",
+    "@types/jest": "^24.0.21",
+    "babel-jest": "^24.9.0",
+    "jest": "^24.9.0",
+    "ts-jest": "^24.1.0",
     "typescript": "^3.6.2"
-  }
+  },
+  "babel": {
+    "presets": [
+      "@babel/preset-env",
+      "@babel/preset-typescript"
+    ]
+  },
+  "dependencies": {}
 }

table.test.ts

@@ -0,0 +1,26 @@
+import {Table, Sum} from './table';
+
+describe("table library", ()=>
+{
+    
+    var table: Table;
+    var rows: Array<Array<string>>;
+    var summationColumns: Array<number>;
+
+    rows = [
+        ["a","1"],
+        ["b","2"],
+        ["a","3"],
+        ["b","1"],
+        ["a","2"],
+        ["b","3"],
+    ];
+    summationColumns = [1];
+    table = new Table("Root", rows, summationColumns);
+
+    it("should create a table", ()=>
+    {
+        expect(table.Name).toEqual("Root");
+        expect(table.Rows).toEqual(rows);
+    });
+})