add test

tests/golden/inputs/margins-auto.md

@@ -0,0 +1,46 @@
+---
+author: 'Jasper'
+patat:
+    margins:
+        left: auto
+        right: auto
+...
+
+# A header
+
+Some text
+
+## Subheader
+
+with more info
+
+1.  One
+2.  Two
+3.  Three
+
+# Hello
+
+- Some really fancy lists
+- With another list embedded:
+    * Yes
+    * No
+- And a codeblock:
+
+    ```
+    1 + 2
+    ```
+
+And a paragraph
+
+```haskell
+Yeah | Nope
+```
+
+# Vertical centered slide
+
+<!--config:
+margins:
+    top: auto
+-->
+
+Yo

tests/golden/outputs/margins-auto.md.dump

@@ -0,0 +1,58 @@
+                            margins-auto.md                             
+
+                               # A header
+
+                               Some text
+
+                              ## Subheader
+
+                             with more info
+
+                               1.  One
+                               2.  Two
+                               3.  Three
+
+ Jasper                                                           1 / 3 
+
+{slide}
+                            margins-auto.md                             
+
+                                # Hello
+
+                     - Some really fancy lists
+
+                     - With another list embedded:
+
+                         * Yes
+                         * No
+
+                     - And a codeblock:
+
+                                 
+                           1 + 2 
+                                 
+
+
+                            And a paragraph
+
+                                          
+                              Yeah | Nope 
+                                          
+
+ Jasper                                                           2 / 3 
+
+{slide}
+                            margins-auto.md                             
+
+
+
+
+
+
+
+
+                       # Vertical centered slide
+
+                                   Yo
+
+ Jasper                                                           3 / 3