ci: setup circleci (#25)

.circleci/config.yml

@@ -0,0 +1,150 @@
+version: 2.1
+
+refs:
+  - &only_master
+    filters:
+      branches:
+        only: master
+
+  - &not_master
+    filters:
+      branches:
+        ignore: master
+
+workflows:
+  test:
+    jobs:
+      - unit-tests:
+          <<: *not_master
+          name: node-6
+          version: '6'
+      - unit-tests:
+          <<: *not_master
+          name: node-8
+          version: '8'
+      - unit-tests:
+          <<: *not_master
+          name: node-10
+          version: '10'
+      - unit-tests:
+          <<: *not_master
+          name: node-12
+          version: '12'
+      - unit-tests:
+          <<: *not_master
+          name: node-14
+          version: '14'
+
+  release:
+    jobs:
+      - unit-tests:
+          <<: *only_master
+          name: node-6
+          version: '6'
+      - unit-tests:
+          <<: *only_master
+          name: node-8
+          version: '8'
+      - unit-tests:
+          <<: *only_master
+          name: node-10
+          version: '10'
+      - unit-tests:
+          <<: *only_master
+          name: node-12
+          version: '12'
+      - unit-tests:
+          <<: *only_master
+          name: node-14
+          version: '14'
+
+      - publish-dry-run:
+          <<: *only_master
+          context: common-env
+
+      - publish-approval:
+          type: approval
+          context: common-env
+          requires:
+            - publish-dry-run
+
+      - publish:
+          <<: *only_master
+          context: common-env
+          requires:
+            - node-6
+            - node-8
+            - node-10
+            - node-12
+            - node-14
+            - publish-approval
+
+jobs:
+  unit-tests:
+    parameters:
+      version:
+        type: string
+    docker:
+      - image: circleci/node:<< parameters.version >>
+    steps:
+      - setup
+      - test
+
+  publish-dry-run:
+    docker:
+      - image: circleci/node:12
+    steps:
+      - setup
+      - publish-dry-run
+
+  publish:
+    docker:
+      - image: circleci/node:12
+    steps:
+      - setup
+      - publish
+
+commands:
+  setup:
+    description: 'Checkout and install dependencies'
+    steps:
+      - checkout
+      - run:
+          name: Versions
+          command: node -v && npm -v
+      - run:
+          name: Install Dependencies
+          command: npm i
+
+  test:
+    steps:
+      - run:
+          name: Test
+          command: npm test
+      - run:
+          name: Pack
+          command: npm pack
+      - run:
+          name: Setup Import Test
+          command: echo $PWD && cd .. && mkdir test-import && cp -a project/test-import/ test-import/test-import/ && cd test-import && npm init -y && npm i ../project/is-promise-2.2.2.tgz
+      - run:
+          name: Test Import
+          command: cd ../test-import && node test-import/test.js
+
+  publish-dry-run:
+    steps:
+      - run:
+          name: NPM Auth
+          command: echo "//registry.npmjs.org/:_authToken=${NPM_TOKEN}" > ~/.npmrc
+      - run:
+          name: Release (Dry Run)
+          command: npx rollingversions publish --dry-run
+
+  publish:
+    steps:
+      - run:
+          name: NPM Auth
+          command: echo "//registry.npmjs.org/:_authToken=${NPM_TOKEN}" > ~/.npmrc
+      - run:
+          name: Release
+          command: npx rollingversions publish

.github/FUNDING.yml

@@ -1,6 +1,6 @@
 # These are supported funding model platforms
 
-github: [ForbesLindesay]# Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2]
+github: [ForbesLindesay] # Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2]
 patreon: # Replace with a single Patreon username
 open_collective: # Replace with a single Open Collective username
 ko_fi: # Replace with a single Ko-fi username

package.json

@@ -4,7 +4,7 @@
   "description": "Test whether an object looks like a promises-a+ promise",
   "main": "./index.js",
   "scripts": {
-    "test": "mocha -R spec"
+    "test": "node test"
   },
   "files": [
     "index.js",
@@ -15,9 +15,5 @@
     "url": "https://github.com/then/is-promise.git"
   },
   "author": "ForbesLindesay",
-  "license": "MIT",
-  "devDependencies": {
-    "better-assert": "^1.0.2",
-    "mocha": "~1.7.4"
-  }
+  "license": "MIT"
 }

test-import/test.js

@@ -0,0 +1,35 @@
+var assert = require('assert');
+var isPromise = require('is-promise');
+
+
+assert(isPromise(null) === false);
+assert(isPromise(undefined) === false);
+assert(isPromise(0) === false);
+assert(isPromise(-42) === false);
+assert(isPromise(42) === false);
+assert(isPromise('') === false);
+assert(isPromise('then') === false);
+assert(isPromise(false) === false);
+assert(isPromise(true) === false);
+assert(isPromise({}) === false);
+assert(isPromise({then: true}) === false);
+assert(isPromise([]) === false);
+assert(isPromise([true]) === false);
+assert(isPromise(() => {}) === false);
+
+// This looks similar enough to a promise
+// that promises/A+ says we should treat
+// it as a promise.
+var promise = {then: function () {}};
+
+assert(isPromise(promise) === true);
+const fn = () => {};
+fn.then = () => {};
+assert(isPromise(fn) === true);
+
+console.log('CommonJS tests passed')
+
+if(parseInt(process.version.split('.')[0].substr(1), 10) >= 14) {
+  const result = require('child_process').spawnSync('node', ['test.mjs'], {cwd: __dirname, stdio: 'inherit'});
+  process.exit(result.status);
+}

test-import/test.mjs

@@ -0,0 +1,30 @@
+import assert from 'assert';
+import isPromise from 'is-promise';
+
+
+assert(isPromise(null) === false);
+assert(isPromise(undefined) === false);
+assert(isPromise(0) === false);
+assert(isPromise(-42) === false);
+assert(isPromise(42) === false);
+assert(isPromise('') === false);
+assert(isPromise('then') === false);
+assert(isPromise(false) === false);
+assert(isPromise(true) === false);
+assert(isPromise({}) === false);
+assert(isPromise({then: true}) === false);
+assert(isPromise([]) === false);
+assert(isPromise([true]) === false);
+assert(isPromise(() => {}) === false);
+
+// This looks similar enough to a promise
+// that promises/A+ says we should treat
+// it as a promise.
+var promise = {then: function () {}};
+
+assert(isPromise(promise) === true);
+const fn = () => {};
+fn.then = () => {};
+assert(isPromise(fn) === true);
+
+console.log('ES Modules tests passed')

test.js

@@ -1,68 +1,30 @@
+var assert = require('assert');
 var isPromise = require('./');
-var assert = require('better-assert');
+
+
+assert(isPromise(null) === false);
+assert(isPromise(undefined) === false);
+assert(isPromise(0) === false);
+assert(isPromise(-42) === false);
+assert(isPromise(42) === false);
+assert(isPromise('') === false);
+assert(isPromise('then') === false);
+assert(isPromise(false) === false);
+assert(isPromise(true) === false);
+assert(isPromise({}) === false);
+assert(isPromise({then: true}) === false);
+assert(isPromise([]) === false);
+assert(isPromise([true]) === false);
+assert(isPromise(() => {}) === false);
 
 // This looks similar enough to a promise
 // that promises/A+ says we should treat
 // it as a promise.
 var promise = {then: function () {}};
 
-describe('calling isPromise', function () {
-  describe('with a promise', function () {
-    it('returns true', function () {
-      assert(isPromise(promise));
-    });
-  });
-  describe('with null', function () {
-    it('returns false', function () {
-      assert(isPromise(null) === false);
-    });
-  });
-  describe('with undefined', function () {
-    it('returns false', function () {
-      assert(isPromise(undefined) === false);
-    });
-  });
-  describe('with a number', function () {
-    it('returns false', function () {
-      assert(!isPromise(0));
-      assert(!isPromise(-42));
-      assert(!isPromise(42));
-    });
-  });
-  describe('with a string', function () {
-    it('returns false', function () {
-      assert(!isPromise(''));
-      assert(!isPromise('then'));
-    });
-  });
-  describe('with a bool', function () {
-    it('returns false', function () {
-      assert(!isPromise(false));
-      assert(!isPromise(true));
-    });
-  });
-  describe('with an object', function () {
-    it('returns false', function () {
-      assert(!isPromise({}));
-      assert(!isPromise({then: true}));
-    });
-  });
-  describe('with an array', function () {
-    it('returns false', function () {
-      assert(!isPromise([]));
-      assert(!isPromise([true]));
-    });
-  });
-  describe('with a func', function () {
-    it('returns false', function () {
-      assert(!isPromise(() => {}));
-    });
-  });
-  describe('with a func with .then method', function () {
-    it('returns true', function () {
-      const fn = () => {};
-      fn.then = () => {};
-      assert(isPromise(fn));
-    });
-  });
-});
+assert(isPromise(promise) === true);
+const fn = () => {};
+fn.then = () => {};
+assert(isPromise(fn) === true);
+
+console.log('tests passed')