Add support for partials and path segments for Handlebars.

This introduces support for some missing features to the Handlebars lexer:
Partials and path segments. Partials mostly appeared to work before, but the
`>` in `{{> ... }}` would appear as a syntax error, as could other
components of the partial. This change introduces support for:

* Standard partials: `{{> partialName}}`
* Partials with parameters: `{{> partialName varname="value"}}`
* Ddynamic partials: `{{> (partialFunc)}}`
* Ddynamic partials with lookups: `{{> (lookup ../path "partialName")}}`
* Partial blocks: `{{> @partial-block}}`
* Inline partials: `{{#*inline}}..{{/inline}}`

It also introduces support for path segments, which can reference content in
the current context or in a parent context. For instance, `this.name`,
`this/name`, `./name`, `../name`, `this/name`, etc. These are all now tracked
as variables.

1 files changed, 35 insertions, 0 deletions

diff --git a/tests/test_string_asserts.py b/tests/test_string_asserts.py
new file mode 100644
index 00000000..ba7b37fa
--- /dev/null
+++ b/tests/test_string_asserts.py
@@ -0,0 +1,35 @@
+# -*- coding: utf-8 -*-
+"""
+    Pygments string assert utility tests
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+    :copyright: Copyright 2006-2015 by the Pygments team, see AUTHORS.
+    :license: BSD, see LICENSE for details.
+"""
+
+import unittest
+from string_asserts import StringTests
+
+class TestStringTests(StringTests, unittest.TestCase):
+
+    def test_startswith_correct(self):
+        self.assertStartsWith("AAA", "A")
+
+    # @unittest.expectedFailure not supported by nose
+    def test_startswith_incorrect(self):
+        self.assertRaises(AssertionError, self.assertStartsWith, "AAA", "B")
+
+    # @unittest.expectedFailure not supported by nose
+    def test_startswith_short(self):
+        self.assertRaises(AssertionError, self.assertStartsWith, "A", "AA")
+
+    def test_endswith_correct(self):
+        self.assertEndsWith("AAA", "A")
+
+    # @unittest.expectedFailure not supported by nose
+    def test_endswith_incorrect(self):
+        self.assertRaises(AssertionError, self.assertEndsWith, "AAA", "B")
+
+    # @unittest.expectedFailure not supported by nose
+    def test_endswith_short(self):
+        self.assertRaises(AssertionError, self.assertEndsWith, "A", "AA")