From 0e531d1b87fe77878cdf04ba2a31dee2342f43aa Mon Sep 17 00:00:00 2001
From: Christophe Demko <chdemko@gmail.com>
Date: Sat, 23 Apr 2016 14:58:41 +0200
Subject: [PATCH] Dealing with div that have not classes

---
 pandoc_latex_environment.py |  4 +-
 setup.py                    |  2 +-
 tests/test_div.py           | 75 +++++++++++++++++++++++++++++++++++++
 3 files changed, 78 insertions(+), 3 deletions(-)

diff --git a/pandoc_latex_environment.py b/pandoc_latex_environment.py
index e42d797..75e0145 100644
--- a/pandoc_latex_environment.py
+++ b/pandoc_latex_environment.py
@@ -10,7 +10,7 @@
 
 def environment(key, value, format, meta):
     # Is it a div and the right format?
-    if key == 'Div':# and format == 'latex':
+    if key == 'Div' and format == 'latex':
 
         # Get the attributes
         [[id, classes, properties], content] = value
@@ -19,7 +19,7 @@ def environment(key, value, format, meta):
 
         for environment, definedClasses in getDefined(meta).items():
             # Is the classes correct?
-            if currentClasses <= definedClasses:
+            if currentClasses <= definedClasses and bool(currentClasses):
                 value[1] = [RawBlock('tex', '\\begin{' + environment + '}')] + content + [RawBlock('tex', '\\end{' + environment + '}')]
                 break
 
diff --git a/setup.py b/setup.py
index 093182f..c3a4bfb 100644
--- a/setup.py
+++ b/setup.py
@@ -28,7 +28,7 @@
     # Versions should comply with PEP440.  For a discussion on single-sourcing
     # the version across setup.py and the project code, see
     # https://packaging.python.org/en/latest/single_source_version.html
-    version='0.0.2',
+    version='0.0.3',
 
     # The project's description
     description='A pandoc filter for adding LaTeX environement on specific div',
diff --git a/tests/test_div.py b/tests/test_div.py
index 548a088..5e257e0 100644
--- a/tests/test_div.py
+++ b/tests/test_div.py
@@ -105,3 +105,78 @@ def test_div():
 
     assert json.loads(json.dumps(src)) == dest
 
+def test_empty():
+    init()
+
+    meta = {
+        'latex-environment': {
+            'c': {
+                'test': {
+                    'c': [
+                        {
+                            'c': [
+                                {
+                                    'c': 'class1',
+                                    't': 'Str'
+                                }
+                            ],
+                            't': 'MetaInlines'
+                        },
+                        {
+                            'c': [
+                                {
+                                    'c': 'class2',
+                                    't': 'Str'
+                                }
+                            ],
+                            't': 'MetaInlines'
+                        }
+                    ],
+                    't': 'MetaList'
+                }
+            },
+            't': 'MetaMap'
+        }
+    }
+
+    src = json.loads(json.dumps(Div(
+        [
+            '',
+            [],
+            []
+        ],
+        [
+            {
+                'c': [
+                    {
+                        'c': 'content',
+                        't': 'Str'
+                    }
+                ],
+                't': 'Plain'
+            }
+        ]
+    )))
+    dest = json.loads(json.dumps(Div(
+        [
+            '',
+            [],
+            []
+        ],
+        [
+            {
+                'c': [
+                    {
+                        'c': 'content',
+                        't': 'Str'
+                    }
+                ],
+                't': 'Plain'
+            }
+        ]
+    )))
+
+    pandoc_latex_environment.environment(src['t'], src['c'], 'latex', meta)
+
+    assert json.loads(json.dumps(src)) == dest
+