Respect configured extensions for test files

Author: lo1tuma

lib/ava-files.js

@@ -205,7 +205,7 @@ class AvaFiles {
 		const initialPatterns = this.files.concat(excludePatterns);
 
 		// Like in `api.js`, tests must be `.js` files and not start with `_`
-		if (path.extname(filePath) !== '.js' || path.basename(filePath)[0] === '_') {
+		if (!this.extensions.includes(path.extname(filePath).substring(1)) || path.basename(filePath)[0] === '_') {
 			return false;
 		}
 

test/ava-files.js

@@ -25,7 +25,7 @@ test('ignores relativeness in patterns', t => {
 });
 
 test('testMatcher', t => {
-	const avaFiles = new AvaFiles({files: ['**/foo*']});
+	const avaFiles = new AvaFiles({files: ['**/foo*'], extensions: ['js', 'ts']});
 
 	function isTest(file) {
 		t.true(avaFiles.isTest(file), `${file} should be a test`);
@@ -40,6 +40,7 @@ test('testMatcher', t => {
 	isTest('foo/blah.js');
 	isTest('bar/foo.js');
 	isTest('bar/foo-bar/baz/buz.js');
+	isTest('foo-bar.ts');
 	notTest('bar/baz/buz.js');
 	notTest('bar.js');
 	notTest('bar/bar.js');
@@ -49,6 +50,7 @@ test('testMatcher', t => {
 	notTest('node_modules/foo.js');
 	notTest('fixtures/foo.js');
 	notTest('helpers/foo.js');
+	notTest('foo-bar.unknown-ext');
 	t.end();
 });