Rewrite tests with jest

.travis.yml

@@ -2,4 +2,7 @@ language: node_js
 node_js:
   - "node"
 
-cache: yarn
+cache: yarn
+
+script:
+  - yarn prepublishOnly

package.json

@@ -22,15 +22,15 @@
   ],
   "scripts": {
     "clean": "rimraf lib dist es",
-    "lint": "eslint src test",
-    "test": "cross-env BABEL_ENV=commonjs tape -r babel-polyfill -r babel-register './test/*.test.js'",
+    "lint": "eslint --max-warnings=0 src test",
+    "test": "cross-env BABEL_ENV=commonjs jest",
     "build:commonjs": "cross-env BABEL_ENV=commonjs babel src --out-dir lib",
     "build:es": "cross-env BABEL_ENV=es babel src --out-dir es",
     "build:umd": "cross-env BABEL_ENV=es NODE_ENV=development rollup -c -i src/index.js -o dist/redux-loop.js",
     "build:umd:min": "cross-env BABEL_ENV=es NODE_ENV=production rollup -c -i src/index.js -o dist/redux-loop.min.js",
     "build": "yarn build:commonjs && yarn build:es && yarn build:umd && yarn build:umd:min",
     "prebuild": "yarn clean",
-    "prepublish": "yarn lint && yarn test && yarn build"
+    "prepublishOnly": "yarn lint && yarn test && yarn build"
   },
   "keywords": [
     "redux",
@@ -64,25 +64,27 @@
     "babel-plugin-transform-object-rest-spread": "6.26.0",
     "babel-polyfill": "^6.26.0",
     "babel-preset-env": "^1.6.0",
-    "babel-register": "^6.26.0",
     "cross-env": "^5.0.5",
-    "eslint": "^4.7.0",
+    "eslint": "^4.7.1",
     "eslint-config-react-app": "^2.0.0",
     "eslint-plugin-flowtype": "^2.35.1",
     "eslint-plugin-import": "^2.7.0",
     "eslint-plugin-jsx-a11y": "^5.1.1",
     "eslint-plugin-react": "^7.3.0",
     "immutable": "^3.7.6",
+    "jest": "^21.1.0",
     "redux": "^3.7.2",
     "rimraf": "^2.6.2",
     "rollup": "^0.50.0",
     "rollup-plugin-babel": "^3.0.2",
     "rollup-plugin-node-resolve": "^3.0.0",
     "rollup-plugin-replace": "^2.0.0",
     "rollup-plugin-uglify": "^2.0.1",
-    "tape": "4.5.1",
     "typescript": "^2.5.2",
     "typescript-definition-tester": "^0.0.5"
   },
-  "dependencies": {}
+  "dependencies": {},
+  "jest": {
+    "testRegex": "(/test/.*\\.spec.js)$"
+  }
 }

src/cmd.js

@@ -4,7 +4,6 @@ const isCmdSymbol = Symbol('isCmd');
 const dispatchSymbol = Symbol('dispatch');
 const getStateSymbol = Symbol('getState');
 
-
 const cmdTypes = {
   RUN: 'RUN',
   ACTION: 'ACTION',
@@ -15,7 +14,7 @@ const cmdTypes = {
 }
 
 export const isCmd = (object) => {
-  return object ? object[isCmdSymbol] : false
+  return object ? !!object[isCmdSymbol] : false
 }
 
 function getMappedCmdArgs(args = [], dispatch, getState){

src/loop.js

@@ -1,12 +1,10 @@
 import { throwInvariant } from './utils';
 import Cmd, { isCmd } from './cmd';
 
-
 export const isLoop = (array) => {
-  return Array.isArray(array) && array.length === 2 && isCmd(array[1])
+  return Array.isArray(array) && array.length === 2 && isCmd(array[1]) && !isCmd(array[0])
 };
 
-
 export const getCmd = (loop) => {
   return isLoop(loop) ? loop[1] : null
 }
@@ -15,7 +13,6 @@ export const getModel = (loop) => {
   return isLoop(loop) ? loop[0] : loop
 }
 
-
 export const loop = (model, cmd) => {
   if(process.env.NODE_ENV === 'development') {
     throwInvariant(
@@ -27,7 +24,6 @@ export const loop = (model, cmd) => {
   return [model, cmd]
 }
 
-
 export const liftState = (state) => {
   return isLoop(state) ? state : loop(state, Cmd.none)
-}
+}

src/utils.js

@@ -4,7 +4,6 @@ export const flatten = (array) => {
   return concat.apply([], array)
 }
 
-
 export const throwInvariant = (condition, message) => {
   if(!condition) {
     throw Error(message)
@@ -13,4 +12,4 @@ export const throwInvariant = (condition, message) => {
 
 export const isPromiseLike = (obj) => {
   return typeof obj === 'object' && typeof obj.then === 'function'
-}
+}

test/.eslintrc

@@ -0,0 +1,5 @@
+{
+  "env": {
+    "jest": true
+  }
+}