add basic test

Author: simonhaenisch

package.json

@@ -6,7 +6,7 @@
   "types": "dist/index.d.ts",
   "scripts": {
     "build": "tsc",
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "npm run build && node test"
   },
   "author": "Simon Haenisch (https://github.com/simonhaenisch)",
   "repository": "simonhaenisch/rollup-plugin-typescript-paths",

test/foo/bar.js

@@ -0,0 +1 @@
+module.exports = { foo: 'bar' };

test/index.js

@@ -0,0 +1,14 @@
+const { strictEqual } = require('assert');
+const { resolve } = require('path');
+const { resolveTypescriptPaths } = require('../dist');
+
+const plugin = resolveTypescriptPaths({ tsConfigPath: resolve(__dirname, 'tsconfig.json') });
+
+const resolved = plugin.resolveId('@foobar', '');
+
+try {
+	strictEqual(resolved, 'test/foo/bar.js');
+	console.log('PASSED');
+} catch (error) {
+	throw error;
+}

test/tsconfig.json

@@ -0,0 +1,8 @@
+{
+	"compilerOptions": {
+		"baseUrl": "test",
+		"paths": {
+			"@foobar": ["foo/bar"]
+		}
+	}
+}