Added lexers test for issue #7548.

IPython/nbconvert/utils/tests/test_lexers.py

@@ -0,0 +1,35
+"""Test lexers module"""
+#-----------------------------------------------------------------------------
+#  Copyright (C) 2014 The IPython Development Team
+#
+#  Distributed under the terms of the BSD License.  The full license is in
+#  the file COPYING, distributed as part of this software.
+#-----------------------------------------------------------------------------
+
+#-----------------------------------------------------------------------------
+# Imports
+#-----------------------------------------------------------------------------
+from pygments.token import Token
+
+from IPython.nbconvert.tests.base import TestsBase
+from .. import lexers
+
+
+#-----------------------------------------------------------------------------
+# Classes and functions
+#-----------------------------------------------------------------------------
+class TestLexers(TestsBase):
+    """Collection of lexers tests"""
+    def setUp(self):
+        self.lexer = lexers.IPythonLexer()
+
+    def testIPythonLexer(self):
+        fragment = '!echo $HOME\n'
+        tokens = [
+            (Token.Operator, '!'),
+            (Token.Name.Builtin, 'echo'),
+            (Token.Text, ' '),
+            (Token.Name.Variable, '$HOME'),
+            (Token.Text, '\n'),
+        ]
+        self.assertEqual(tokens, list(self.lexer.get_tokens(fragment)))