1 files changed, 54 insertions, 0 deletions
diff --git a/tests/test_ruby.py b/tests/test_ruby.py
new file mode 100644
index 0000000..a272926
--- /dev/null
+++ b/tests/test_ruby.py
@@ -0,0 +1,54 @@
+# -*- coding: utf-8 -*-
+"""
+    Basic RubyLexer Test
+    ~~~~~~~~~~~~~~~~~~~~
+
+    :copyright: Copyright 2006-2020 by the Pygments team, see AUTHORS.
+    :license: BSD, see LICENSE for details.
+"""
+
+import pytest
+
+from pygments.token import Name
+from pygments.lexers.ruby import RubyLexer
+
+
+@pytest.fixture(scope='module')
+def lexer():
+    yield RubyLexer()
+
+
+@pytest.mark.parametrize(
+    'method_name',
+    (
+        # Bare, un-scoped method names
+        'a', 'A', 'z', 'Z', 'は', '\u0080', '\uffff',
+        'aは0_', 'はA__9', '\u0080はa0_', '\uffff__99Z',
+
+        # Method names with trailing characters
+        'aは!', 'はz?', 'はa=',
+
+        # Scoped method names
+        'self.a', 'String.は_', 'example.AZ09_!',
+
+        # Operator overrides
+        '+', '+@', '-', '-@', '!', '!@', '~', '~@',
+        '*', '**', '/', '%', '&', '^', '`',
+        '<=>', '<', '<<', '<=', '>', '>>', '>=',
+        '==', '!=', '===', '=~', '!~',
+        '[]', '[]=',
+    )
+)
+def test_positive_method_names(lexer, method_name):
+    """Validate positive method name parsing."""
+
+    text = 'def ' + method_name
+    assert list(lexer.get_tokens(text))[-2] == (Name.Function, method_name.rpartition('.')[2])
+
+
+@pytest.mark.parametrize('method_name', ('1', '_', '<>', '<<=', '>>=', '&&', '||', '==?', '==!', '===='))
+def test_negative_method_names(lexer, method_name):
+    """Validate negative method name parsing."""
+
+    text = 'def ' + method_name
+    assert list(lexer.get_tokens(text))[-2] != (Name.Function, method_name)