added: minimum test (#8)

Author: r17x

.gitignore

@@ -2,3 +2,4 @@ node_modules/
 *.swp
 *.swp
 dist/
+*.log

__tests__/index.js

@@ -1,2 +1,60 @@
-    test.todo('StateProvider')
-    test.todo('useGlobalState')
+import React from 'react'
+import {useGlobalState, StateProvider} from '../lib'
+import {fireEvent, render} from '@testing-library/react'
+
+const Provider  = jest.fn(StateProvider)
+
+test('StateProvider & useGlobalState test', () => {
+
+    const Props ={
+        reducer: (state, action) => {
+            switch(action.type){
+                case 'TEST': return {
+                    ...state,
+                    test: true 
+                } 
+                default: return state
+            } 
+        },
+        initialState: {test: false}
+    } 
+
+    const ShowTest = () => {
+        const [{test}] = useGlobalState()
+        return (
+            <span data-testid="showTest">
+                {JSON.stringify(test)}
+            </span>
+        )
+    } 
+
+    const ChangeTest = () => {
+        const [, dispatch] = useGlobalState()
+
+        const handleClick = () => {
+            dispatch({
+                type: 'TEST'
+            }) 
+        }
+
+        return (<button data-testid="changeTest" onClick={handleClick}>Change Test</button>)
+    }
+
+    const {container, getByTestId } = render(
+        <Provider {...Props}>
+            <ShowTest/>
+            <ChangeTest/>
+        </Provider>
+    )
+
+    const showTest = getByTestId('showTest')
+    const changeTest = getByTestId('changeTest')
+
+    expect(Provider).toHaveBeenCalled()
+    expect(showTest).toHaveTextContent('false')
+    expect(container).toBeInTheDocument()
+
+    fireEvent.click(changeTest)
+    expect(showTest).toHaveTextContent('true')
+
+})

jest.config.js

@@ -0,0 +1,2 @@
+import '@testing-library/jest-dom/extend-expect'
+import '@testing-library/react/cleanup-after-each';

jest.setup.js

@@ -7,13 +7,28 @@
   "license": "MIT",
   "private": false,
   "peerDependencies": {
-    "react": "^16.8.6"
+    "react": "^16.8.0"
   },
   "files": [
     "lib",
-    "dist",
-    "README.md"
+    "dist"
   ],
+  "jest": {
+    "bail": true,
+    "browser": true,
+    "displayName": "global-state v0.0.1",
+    "testEnvironment": "jest-environment-jsdom",
+    "transform": {
+      "^.+\\.[t|j]sx?$": "babel-jest"
+    },
+    "setupFilesAfterEnv": [
+      "./jest.setup.js"
+    ],
+    "testMatch": [
+      "**/__tests__/**/*.js?(x)"
+    ],
+    "verbose": true
+  },
   "babel": {
     "presets": [
       [
@@ -23,7 +38,8 @@
             "node": true
           }
         }
-      ]
+      ],
+      "@babel/preset-react"
     ],
     "plugins": []
   },
@@ -40,14 +56,17 @@
     "lint": "eslint ./lib --fix",
     "prepare": "rm -rf dist && yarn test && yarn build",
     "release": "yarn -s prepare && git commit -am $npm_package_version && git tag $npm_package_version && git push && git push --tags && npm publish",
-    "test": "jest --config jest.config.js",
+    "test": "jest",
     "test:watch": "jest --watch",
     "fixreadme": "node -e 'var fs=require(\"fs\");fs.writeFileSync(\"README.md\", fs.readFileSync(\"README.md\", \"utf8\").replace(/^-   /gm, \"- \"))'",
     "docs": "documentation readme lib/*.js -q --section API && yarn fixreadme"
   },
   "devDependencies": {
     "@babel/core": "^7.5.5",
     "@babel/preset-env": "7.5.5",
+    "@babel/preset-react": "7.0.0",
+    "@testing-library/jest-dom": "4.0.0",
+    "@testing-library/react": "8.0.7",
     "babel-jest": "24.8.0",
     "documentation": "12.0.3",
     "eslint": "6.1.0",
@@ -57,6 +76,8 @@
     "jest": "24.8.0",
     "microbundle": "0.11.0",
     "npm-run-all": "4.1.5",
+    "react": "16.8.0",
+    "react-dom": "16.8.6",
     "strip-json-comments-cli": "1.0.1"
   }
 }