add test for #1606

test/cli/index.js

@@ -100,6 +100,13 @@ describe('cli', () => {
 					} catch (err) {
 						done(err);
 					}
+				} else if (config.test) {
+					try {
+						config.test();
+						done();
+					} catch (err) {
+						done(err);
+					}
 				} else if (
 					sander.existsSync('_expected') &&
 					sander.statSync('_expected').isDirectory()

test/cli/samples/config-no-output/_config.js

@@ -0,0 +1,12 @@
+var fs = require('fs');
+var assert = require('assert');
+
+module.exports = {
+	description: 'uses -o from CLI',
+	command: 'rollup -c -o output.js',
+	test() {
+		const output = fs.readFileSync('output.js', 'utf-8');
+		assert.equal(output.trim(), 'console.log(42);');
+		fs.unlinkSync('output.js');
+	}
+};

test/cli/samples/config-no-output/main.js

@@ -0,0 +1 @@
+console.log(42);

test/cli/samples/config-no-output/rollup.config.js

@@ -0,0 +1,6 @@
+export default {
+	input: 'main.js',
+	output: {
+		format: 'es'
+	}
+};