Initial tests

.travis.yml

@@ -0,0 +1,8 @@
+version: ~> 1.0
+language: node_js
+os:
+ - linux
+import:
+ - ljharb/travis-ci:node/all.yml
+ - ljharb/travis-ci:node/pretest.yml
+ - ljharb/travis-ci:node/posttest.yml

package.json

@@ -6,7 +6,9 @@
 	"scripts": {
 		"lint": "eslint .",
 		"pretest": "npm run lint",
-		"test": "echo \"Error: no test specified\" && exit 1"
+		"tests-only": "node test",
+		"test": "npm run tests-only",
+		"posttest": "npx aud"
 	},
 	"repository": {
 		"type": "git",
@@ -30,6 +32,7 @@
 	"homepage": "https://github.com/ljharb/side-channel#readme",
 	"devDependencies": {
 		"@ljharb/eslint-config": "^15.0.2",
-		"eslint": "^6.7.2"
+		"eslint": "^6.7.2",
+		"tape": "^4.11.0"
 	}
 }

test/index.js

@@ -0,0 +1,69 @@
+'use strict';
+
+var test = require('tape');
+
+var getSideChannel = require('../');
+
+test('export', function (t) {
+	t.equal(typeof getSideChannel, 'function', 'is a function');
+	t.equal(getSideChannel.length, 0, 'takes no arguments');
+
+	var channel = getSideChannel();
+	t.ok(channel, 'is truthy');
+	t.equal(typeof channel, 'object', 'is an object');
+
+	t.end();
+});
+
+test('assert', function (t) {
+	var channel = getSideChannel();
+	t['throws'](
+		function () { channel.assert({}); },
+		TypeError,
+		'nonexistent value throws'
+	);
+
+	var o = {};
+	channel.set(o, 'data');
+	t.doesNotThrow(function () { channel.assert(o); }, 'existent value noops');
+
+	t.end();
+});
+
+test('has', function (t) {
+	var channel = getSideChannel();
+	var o = [];
+
+	t.equal(channel.has(o), false, 'nonexistent value yields false');
+
+	channel.set(o, 'foo');
+	t.equal(channel.has(o), true, 'existent value yields true');
+
+	t.end();
+});
+
+test('get', function (t) {
+	var channel = getSideChannel();
+	var o = {};
+	t.equal(channel.get(o), undefined, 'nonexistent value yields undefined');
+
+	var data = {};
+	channel.set(o, data);
+	t.equal(channel.get(o), data, '"get" yields data set by "set"');
+
+	t.end();
+});
+
+test('set', function (t) {
+	var channel = getSideChannel();
+	var o = function () {};
+	t.equal(channel.get(o), undefined, 'value not set');
+
+	channel.set(o, 42);
+	t.equal(channel.get(o), 42, 'value was set');
+
+	channel.set(o, Infinity);
+	t.equal(channel.get(o), Infinity, 'value was set again');
+
+	t.end();
+});