bdd mocha test method

3.5mocha/test.js

@@ -0,0 +1,16 @@
+describe("pow", function(){
+    it("calculate the pow of the number", function(){
+        assert.equal(pow(2, 3), 8);
+    })
+
+    function maketest(x){
+        let expected = x * x * x;
+        it(`calculate ${x}^3`, function(){
+            assert.equal(pow(x, 3), expected);
+        })
+    }
+
+    for(let i = 1; i < 5; i++){
+        maketest(i);
+    }
+});