Added tests

Author: Jaid

package.json

@@ -26,8 +26,9 @@
     "build:dev": "webpack",
     "test": "npm run build:prod && jest",
     "test:dev": "npm run build:dev && jest",
+    "test:debug": "node --inspect=9229 node_modules/jest/bin/jest.js --runInBand",
     "prepublishOnly": "npm run build:prod",
     "prepare": "jest --clearCache",
     "release": "npm publish dist"
   }
-}
+}

test/index.test.js

@@ -0,0 +1,26 @@
+import arrayToObjectKeys from "../dist"
+
+it("should run with 1 argument", () => {
+  const result = arrayToObjectKeys(["a", "b"])
+  expect(result).toEqual({
+    a: null,
+    b: null,
+  })
+})
+
+it("should run with an integer as second argument", () => {
+  const result = arrayToObjectKeys(["a", "b"], 7)
+  expect(result).toEqual({
+    a: 7,
+    b: 7,
+  })
+})
+
+it("should run with a function as second argument", () => {
+  const valueGenerator = (key, index) => `${index + 1}-${key}-x`
+  const result = arrayToObjectKeys(["a", "b"], valueGenerator)
+  expect(result).toEqual({
+    a: "1-a-x",
+    b: "2-b-x",
+  })
+})