add registry type

Author: mattiaerre

.babelrc

@@ -0,0 +1,6 @@
+{
+  "presets": [
+    "latest",
+    "stage-3"
+  ]
+}

.eslintrc

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+{
+  "extends": "airbnb",
+  "rules": {
+    "jsx-a11y/img-has-alt": "off",
+    "comma-dangle": "off",
+    "import/no-extraneous-dependencies": "off"
+  },
+  "env": {
+    "jest": true
+  }
+}

README.md

@@ -1,2 +1,8 @@
 # oc-registry-graphql-express-middleware
+
 oc-registry-graphql-express-middleware
+
+```bash
+yarn
+yarn test
+```

__tests__/__snapshots__/index.test.js.snap

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+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`expect res setHeader and end to match snapshot 1`] = `
+Array [
+  Array [
+    "Content-Type",
+    "application/json; charset=utf-8",
+  ],
+]
+`;
+
+exports[`expect res setHeader and end to match snapshot 2`] = `
+Array [
+  Array [
+    "{\\"data\\":{\\"registry\\":{\\"href\\":\\"http://mock:3000/\\",\\"ocVersion\\":\\"8.1.5\\",\\"type\\":\\"mock-registry\\"}}}",
+  ],
+]
+`;

__tests__/index.test.js

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+const fetch = require('node-fetch');
+const factory = require('../src/index');
+
+const options = {
+  baseUrl: 'http://mock:3000/',
+  graphiql: true
+};
+
+const middleware = factory(options);
+
+test('expect type of middleware to be function', () => {
+  expect(typeof middleware).toBe('function');
+});
+
+test('expect res setHeader and end to match snapshot', async () => {
+  fetch.mockResponse(JSON.stringify({
+    href: options.baseUrl,
+    ocVersion: '8.1.5',
+    type: 'mock-registry'
+  }));
+
+  const req = {
+    method: 'GET',
+    headers: {},
+    url: `?query=
+    {
+      registry {
+        href
+        ocVersion
+        type
+      }
+    }
+    `
+  };
+
+  const res = { setHeader: jest.fn(), end: jest.fn() };
+
+  await middleware(req, res);
+
+  expect(res.setHeader.mock.calls).toMatchSnapshot();
+  expect(res.end.mock.calls).toMatchSnapshot();
+});

index.js

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+module.exports = require('./src');

package.json

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+{
+  "name": "oc-registry-graphql-express-middleware",
+  "version": "1.0.0-alpha.1",
+  "description": "oc-registry-graphql-express-middleware",
+  "main": "index.js",
+  "scripts": {
+    "test": "jest --coverage"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/opencomponents/oc-registry-graphql-express-middleware.git"
+  },
+  "keywords": [
+    "opencomponents",
+    "registry",
+    "graphql",
+    "express",
+    "middleware"
+  ],
+  "author": {
+    "name": "Mattia Richetto",
+    "email": "[email protected]"
+  },
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/opencomponents/oc-registry-graphql-express-middleware/issues"
+  },
+  "homepage": "https://github.com/opencomponents/oc-registry-graphql-express-middleware#readme",
+  "devDependencies": {
+    "babel-core": "^6.24.1",
+    "babel-eslint": "^7.2.3",
+    "babel-polyfill": "^6.23.0",
+    "babel-preset-latest": "^6.24.1",
+    "babel-preset-stage-3": "^6.24.1",
+    "eslint": "^3.19.0",
+    "eslint-config-airbnb": "^14.1.0",
+    "eslint-plugin-import": "^2.2.0",
+    "eslint-plugin-jsx-a11y": "^5.0.1",
+    "isomorphic-fetch": "^2.2.1",
+    "jest": "^20.0.0",
+    "jest-fetch-mock": "^1.1.1"
+  },
+  "dependencies": {
+    "express-graphql": "^0.6.4",
+    "graphql": "^0.9.6",
+    "node-fetch": "^1.6.3"
+  },
+  "jest": {
+    "automock": false,
+    "setupFiles": [
+      "./setupJest.js"
+    ],
+    "testEnvironment": "node"
+  }
+}

setupJest.js

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+require('isomorphic-fetch');
+const fetch = require('jest-fetch-mock');
+
+jest.setMock('node-fetch', fetch);

src/index.js

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+/* eslint-disable arrow-body-style */
+
+const graphqlHTTP = require('express-graphql');
+const { buildSchema } = require('graphql');
+const fetch = require('node-fetch');
+
+const schema = buildSchema(`
+  type Registry {
+    href: String
+    ocVersion: String
+    type: String
+  }
+
+  type Query {
+    registry: Registry
+  }
+`);
+
+const root = (options) => {
+  return {
+    registry: () => {
+      return fetch(options.baseUrl)
+        .then(response => response.json())
+        .then((data) => {
+          return {
+            href: data.href,
+            ocVersion: data.ocVersion,
+            type: data.type
+          };
+        });
+    }
+  };
+};
+
+const factory = (options) => {
+  return graphqlHTTP({
+    schema,
+    rootValue: root(options),
+    graphiql: options.graphiql,
+  });
+};
+
+module.exports = factory;