So siehts ganz gut aus !

node_modules/pug-lexer/test/index.test.js

@@ -0,0 +1,38 @@
+'use strict';
+
+var fs = require('fs');
+var assert = require('assert');
+var lex = require('../');
+
+var dir = __dirname + '/cases/';
+fs.readdirSync(dir).forEach(function (testCase) {
+  if (/\.pug$/.test(testCase)) {
+    test(testCase, () => {
+      var result = lex(fs.readFileSync(dir + testCase, 'utf8'), {filename: dir + testCase});
+      expect(result).toMatchSnapshot();
+    });
+  }
+});
+
+
+var edir = __dirname + '/errors/';
+fs.readdirSync(edir).forEach(function (testCase) {
+  if (/\.pug$/.test(testCase)) {
+    test(testCase, () => {
+      var actual;
+      try {
+        lex(fs.readFileSync(edir + testCase, 'utf8'), {filename: edir + testCase});
+        throw new Error('Expected ' + testCase + ' to throw an exception.');
+      } catch (ex) {
+        if (!ex || !ex.code || ex.code.indexOf('PUG:') !== 0) throw ex;
+        actual = {
+          msg: ex.msg,
+          code: ex.code,
+          line: ex.line,
+          column: ex.column
+        };
+      }
+      expect(actual).toMatchSnapshot();
+    });
+  }
+});